9 Information and Communications Technology Learner’s Material Computer Hardware Servicing GOVERNMENT PROPERTY NOT FOR SALE ALLOTTED TO
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Department of Education Republic of the Philippines Technology and Livelihood Education – Grade 9 Learner’s Material First Edition, 2013 ISBN: ___________ Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this book are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them. Published by the Department of Education Secretary: Br. Armin A. Luistro FSC Undersecretary: Dina S. Ocampo, Ph.D. Assistant Secretary: Lorna Dig Dino, Ph.D. Development Team of the Learner’s Material Authors: Owen M. Milambiling, Cesar T. Arriola, Dante B. Bermas, Ronaldo V. Ramilo, Rosalie P. Lujero, Diana Marie B. Dagli, Dr. Virgilio O. Guevarra, and Maria Angelica G. Mates Editors: Dr. Paraluman R. Giron, Ofelia C. Flojo, and Perla H. Cuanzon Reviewers: Romeo B. Gacutan, Simfroso C. Robles II and Marion I. Alinas Illustrator and Layout Artists: Subject Specialist: Owen M. Milambiling Management Team: Dr. Lolita M. Andrada, Jocelyn DR Andaya, Bella O. Mariñas, Dr. Jose D. Tuguinayo, Jr.
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ii
TABLE OF CONTENTS
Module 1: PERSONAL ENTREPRENEURIAL COMPETENCIES Explore your Understanding ………………………………………….… 1 Guide Questions …………………………………………………………. 2 Pre-Assessment …………………………………………………………. 2 Self-Assessment ………………………………………………………… 5 Lesson 1 ……………………………………………………………………. 6 Firm Up ……………………………………………………………………. 8 Deepen …………………………………………………………………... 10 Transfer ………………………………………………………………….. 12 Post-Assessment ………………………………………………………. 14 Feedback ……………………………………………………………….. 16 Module 2: ENVIRONMENT AND MARKET Explore your Understanding ………………………………………….. 18 Lesson 1: Needs and Wants of People ……………………………….. 19 Lesson 2: Generating Ideas for Business …………………………….
20
Lesson 3: Selecting the Right Ideas……………………………………
22
Lesson 4: Environmental Scanning ……………………………………
23
Firm Up ………………………………………………………………….. 24 Deepen ....……………………………………………………………….. 24 Transfer ………………………………………………………………….. 26 Post-Assessment ……………………………………………………….
27
Feedback ………………………………………………………………… 28 Module 3: INSTALL COMPUTER SYSTEMS AND NETWORKS
Introduction ………………………………………………………………… 30 Objectives…………………………………………………………………..
31
Pre- Assessment ……………………………………………
32
Lesson 1: PLAN AND PREPARE FOR INSTALLATION …………….. 1.1 Safety Measures: OHS Policies and Procedures………
33 33
1.2 Understanding Computer System…………………………… 37 1.3 Computer Systems, Devices and Peripheral ………..……. 42 iii
1.4 Network…………………………..……………………………. 57 1.5 Materials, tools, equipment and testing devices………….. 61 Lesson 2: INSTALL EQUIPMENT / DEVICES and SYSTEMS ……….… 65 2. 1 Safety Precautions…………………………..……………… 65 2.2 System Specification..………………………………………. 69 2.3 Installation of Hardware components and other peripherals…… 73 2.4 Installing Operating System …………………………….…… 91 2.5 Windows 7 installation ……………………………………….. 107 2.6 Basic Computer Configuration Set- up …………………….. 119 Lesson 3: CONDUCT TEST ON THE INSTALLED COMPUTER SYSTEM ……. 127 3.1. Testing Installed equipment/devices/system………………….. 127 Summative Test ……………………………………………………………….. 134 Post- Test ………………………………………………………………………. 138 Glossary of Terms.…………………………………………………………….. 139 Acronyms ………………………………………………………………………. 141 References …………………………………………………………………….. 143 Module 4: DIAGNOSE AND TROUBLESHOOT COMPUTER SYSTEM …. 145 Pre- assessment ………………………………………………………………… 147 Lesson 1: PLAN AND PREPARE FOR DIAGNOSIS OF COMPUTER SYSTEM.. 145 1.1 Safety Precautions ………………………………………… 148 1.2 Types of Computer System Error …..…………………….. 151 1.3 Diagnosing Computer Systems
……………………..
153
Lesson 2: DIAGNOSE AND CONFIGURE COMPUTER SYSTEMS AND NETWORKS……………………………………………………………… 158 2.1 Safety Precautions ………………………….………………. 158 2.2 Basic Concepts of Electricity………………………………
159
2.3 Techniques for Testing Computer System…………………. 165 2.4 Tools for Testing Computer System..………………………. 177 2.5 Troubleshooting Computer System Network ……………... 180 2.6 Computer System and Network Configurations ………….. 186 Lesson 3: DIAGNOSE AND CONFIGURE COMPUTER SYSTEMS AND NETWORKS ……………………………………………………………………..
195
3.1 General Safety Tips and Reminders ………………………
196
3.2 Replacing Different Components ………………………….
200 iv
3.3 Upgrading your Computer Components ……………………. 203 3.3 Basic Network Errors ………………………………………….. 211 3.4 Award BOS / CMOS Setup …………………………………… 220 Lesson 4: TEST SYSTEMS AND NETWORKS………………………………………..
230
4.1 Testing Computer System …………………………………….. 230 4.2 Error Beep Codes ………………………………………………. 236 Post Assessment ………………………………………………………………. 245 Summative Test ………………………………………………………….……. 247 Glossary ……………………………………………………………………….. 252 References …………………………………………………………………….. 254
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Technology and Livelihood Education Entrepreneurship Module 1: Personal Entrepreneurial Competencies
Have you ever thought running your own business? Entrepreneurship has brought great success to some, but it's not a career path for all. Do you think you can handle the stress and hard work that go with running a small business enterprise? The key to succeed in a small business enterprise is your entrepreneurial ability to produce the desired results. Before embarking on your first business, it's worth spending some time evaluating your own preparedness for entrepreneurship. Try to examine your own personality and compare it with the Personal Entrepreneurial Competencies (PECs) of a successful entrepreneur. Ask yourself if you are ready to enter into the world of business. If your answer is yes, take this reminder: “Successful entrepreneurs continuously develop and improve their PECs”.
EXPLORE Your Understanding Essential Question -
How does one ensure success in a chosen career?
Content Standard -
The learner demonstrates Competencies (PECs) Performance Standard
understanding
of
Personal
Entrepreneurial
1
-
The learner prepares an activity plan that addresses his/her development areas based on his/her PECs and improves further his/her areas of strength.
Guide Questions: 1. Why is there a need to assess ones personal characteristics, attributes, lifestyles, skills and traits? 2. What are the personal entrepreneurial competencies of a successful entrepreneur? 3. Why is it necessary to compare ones personal characteristics, attributes, lifestyles, skills and traits to the personal entrepreneurial competencies of a successful entrepreneur? 4. How do you relate your PECs to the PECs of a successful entrepreneur? 5. Based on the data that you have gathered from the interview with the successful entrepreneur in your community, how do you develop your PECs? 6. Can you prepare an action plan that addresses your areas of development and strength based on your PECs? 7. How does your action plan help sustain your strong areas and or address your development areas based on your PECs?
Hello there!
Are you ready to assess yourself to become a
successful entrepreneur in the future? As honest as you could, please answer the pre-assessment below.
Pre- Assessment A. Matching Type Directions: Column A lists the characteristics of a successful entrepreneur. Draw a line from the items in Column A that connects the correct definition of terms listed in Column B.
Column A
Column B
2
1. Hardworking 2. Self-confident 3. Profit-Oriented 4. Goal-Oriented 5. Persistent 6. Responds to feedback 7. Willing to listen 8. Committed 9. Reliable and has integrity 10. Risk-taker
a. Ability to set realistic targets. b. Interest in money generation. c. To succeed, one must believe in one’s self. d. Working diligently and industriously. e. Being able to listen to the advice of others. f. Obtaining useful feedback and advice from others. g. Being patient and strives to achieve the goal. h. Ability to take measured or calculated risks. i. Being honest, fair and trustworthy. j. A major priority in the entrepreneur’s life.
Are you done? This time you will do another set of pre- assessment which could give you a better understanding of what this module is all about. Are you ready? So, let’s begin!
B. Multiple Choice. Directions: Read and study the situation that describes the entrepreneurial characteristics or attributes. Answer the question by writing the letter of your choice in your assignment notebook or in the answer sheet provided.
Mrs. Gina Magno opens up her own retail business. She knows that her personal entrepreneurial characteristics are insufficient to ensure a successful operationalization of a business that she has in mind. Your answers to the questions below will help in developing her PECs.
3
1. What PECs must she possess if there are customers who complain about the quality of her product? a. Patience b. Hardworking c. Versatile d. All of the above 2. Which of the following is NOT considered as a characteristic of an entrepreneur? a. Copes with failure b. Dependent c. Persistent d. Opportunity seeker 3. If she wants to ensure a profitable business operation, what characteristic will she maintain? a. Commitment b. Goal oriented c. Futuristic d. Opportunity seeker 4. Mrs. Magno follows the advice of a friend to be flexible especially if she intends to open a retail business. What PECs has been demonstrated by Mrs. Magno? a. Self- confidence b. Reliable and has integrity c. Open to feedback d. Persistent 5. She tells Mary, her best friend that she has a strong will and does not give up to find a solution to a business problem. What PECs has been demonstrated by Mrs. Magno? a. Hard work b. Persistence c. Self-confidence d. Risk- taking
4
This time evaluate your own personal entrepreneurial characteristics to determine whether you too, can become an entrepreneur. If you are ready, you may begin!
C. Self- Assessment Directions: Below is a list of Personal Entrepreneurial Competencies (PECs) of a successful entrepreneur. Put a check mark on the 2nd column that indicates your strong PECs. The check mark on the 3rd column are those PECs that need to be developed. My Personal Entrepreneurial Competencies Personal Entrepreneurial Competencies of an Entrepreneur
Strength
Needs to be Developed
Hardworking Self-confident Builds for the future Profit-oriented Goal-oriented Persistent Copes with failure Responds to feedback Demonstrates initiative Willing to listen Sets own standards Copes with uncertainty Committed Builds on strengths Reliable and has integrity Risk-taker 5
Did you enjoy examining yourself? You can become a successful entrepreneur someday. Please don’t feel bad when you discover that there are still to be developed.
Continue your exploration to find
answers to these underdeveloped PECs.
Lesson1.
Important Entrepreneurial Traits
The following are the fundamental characteristics of an entrepreneur:
1. Hard working: If you are determined to run your own business, you must concentrate on your work either as a producer or a seller. The success of your business depends on how much time and effort you will spend on it. 2. Self- Confidence: You must have a strong faith in your ability despite the problems that you will encounter along the way. 3. Future-Oriented: Once a person enters in a line of business, you must understand that you are in a non-stop contract that an entrepreneur should understand. It may take several years to build up a business to a reasonable standard. The goal for most successful business people is to build a secure job and stable income for themselves based on their own ability. 4. Profit-Oriented: When you enter into the world of business, obviously, you are looking for income because you know that this will be your bread and butter not only for you but also for your family. Therefore, you must see to it the business can generate income. Another plan of action is to expand your own business through the use of your generated income. 5. Goal-Oriented:
An entrepreneur is forward looking.
You have an advanced
preparation for your business. You set a long-term goal for the activities that are needed, an extensive preparation for the production process and procedures that you need to go through to acquire, human and non-human resources. Everything in
6
your business will have to be set clearly, organized, and planned depending on the goal you want to achieve. 6. Persistence: Differences in opinion and judgment. Your opponent can be a part of the rejection on what you intend to do for your endeavor. As an entrepreneur, you must be firm, strong-willed, and stick or follow your own belief. 7. Copes with Failure:
“Learn from your mistakes”.
As an entrepreneur, you must
learn how to deal with the frustrations and failures instead, turn these into productive learning experiences. 8. Responds to Feedback or Open to Feedback:
You must be concerned to know
how well you are doing and keep track of your performance. You must obtain useful feedback and advice from others. 9. Take the Initiative: A successful entrepreneur takes the initiative. You must put yourself in a position where you personally are responsible for the failure or success of your business. 10. Willing to Listen:
Take time to listen to the advice, suggestions, and
recommendations of fellow entrepreneurs. It will help your business grow. 11. Set your Own Standards: This involves developing and using logical, step-by-step plans to reach the goals, or offering evaluation alternatives, monitoring progress, and switching to successful strategies for the goal you want to achieve. To be a successful entrepreneur you must take into consideration that sales and production depend on your own standards. 12. Copes with Uncertainty: Pursue your vision to be a successful entrepreneur, you should know how to handle unusual events that may happen in the business which include problems in managing the workers, problems on the delivery of goods and services, and the problems on demand and production. You must be patient in dealing with these uncertainties. 13. Committed: You should know that in your business, personal needs, attachment to your friends, families and relatives are set aside. You must separate the money for your business from the amount that you need to spend for personal obligations and lifestyles.
7
14. Builds on Strengths:
Successful business people base their work on strengths.
Use your manual skills, knowledge in creating products or services, knowledge in trade and industry, ability to make and use of a wide network of contacts to build your business. 15. Reliable and has Integrity: An entrepreneur must build a good reputation, possess the courage to do the right thing, do what you say, walk your talk, be loyal, and be fair in dealing with the subordinates and costumers. 16. Risk-Taker: Risk sometimes cannot be anticipated. When misfortunes happen, consider these as challenges and work them out and set good alternatives. Risks may result to loss of your business or even bankruptcy.
FIRM UP your Understanding
Activity1:
Aligning one’s PECs
Directions: Choose from the list below the characteristics and traits that best describe your own personal entrepreneurial characteristics. Find ways on how to align them according to the personal entrepreneurial characteristics of an entrepreneur which were discussed earlier. Write your answers in the activity sheet provided. Creative
Resourceful
Persistent
Organized
Independent
Confident
Risk taker
Observant
Competent
Trustworthy
Optimistic
Passionate
Flexible
Sensitive
Committed
Dynamic
Efficient
Hardworking
Decision-maker
Reliable
Knowledgeable
Persevering
Decisive
Strong–minded
Courteous
8
Example: My PECs
Things to do to align with PECs My PECs
My simple definition
of a successful entrepreneur
1. Creative 2. Organized 3. Competent 4. Observant
Try to design a concept map that indicates your traits, characteristics and skills that you need to possess in order to become a successful entrepreneur.
Activity 2.
My PECs that need to be further improved
Directions: At the center of the street are arrows where positive and negative characteristics and traits are written. Pick out the positive PECs that you are already strong at, and write them down on the blank arrows on the left side. PECs written on the arrows at the right side are the negative characteristics that need to be further improved.
9
DEEPEN Your Understanding Lesson 1 Strengthening your Identified PECs Here are your guides on how to strengthen your own PECs. 1. React positively to criticisms and open to feedback. 2. Always demonstrate positive attitude to achieve a desired goal.
3. Always project strong and well-balanced behavior. 4. Always exercise the assertive style in your work environment. 10
5. Avoid being too passive and too aggressive. 6. Don’t let anyone worsen your business life. 7. Prioritize your business goal rather than personal goal in order to become a successful entrepreneur. 8. Acquire specific skills for creating and maintaining a conducive work environment. 9. Be responsible in everything you do in your business. 10. Always observe business ethics in putting up a business.
Hello! I’m here once again reminding you whether you have achieved a certain point that you could honestly tell that you are already successful in strengthening your own PECs. Let’ s see!
Activity 1: My techniques to strengthen PECs Directions: From the given chart below, write at least six techniques on how you would strengthen your own PECs. Write the PECs that you feel that you still need to focus on to strengthen these.
Example: Self-confidence
11
Selfconfidence
TRANSFER Your Learning Preparation of an Action Plan Culminating Activity Directions:
Examine yourself once again. Make a short list of PECs that you need to
strengthen. From this activity, prepare of an action plan that requires further development. You may opt to follow the suggested format below. You may improve or change it as long as it suits your own plan of action.
Sample Action Plan
12
Specific Purpose Statement: ( Your vision of your future) Ex. Developing self-confidence in retail business. Focus
Current
Area
Situation
My PECs I need to
Measures Goal - To
of Success
Actions
Time
Required
Frame
Reward/ Recognition
Achieve
-Selling
-During
-Earns
finished
culminating expected
develop
exercise
100%
my
my own
completion of products
activities
income
undefined
PECs
development
-After
-Outstanding
characteris during
of
-tics need
selling and
for my
my
derived
own from
learning
performance in
PECs through culminating
the
selling and
producing
selling
principles,
promoting
retail
products/
production of any of
theories,
products and
business.
services
products,
chosen
process and services
such as:
-To become proper
career.
of any
and activities in
_________ proficient
manner when -Participate chosen
_________
dealing
in my
_________ chosen
people.
with in skills
career
competition
_________ skill.
sponsored
_________
by the NGO and GO
Post-Assessment
13
Answer the post assessment below to determine whether there is significant increase in your understanding of PECs. The feedback to this post assessment is appended on page 16. Good Luck!
A. Matching Type Directions: Column A lists the characteristics of a successful entrepreneur. Draw a line from the items in Column A that connects the correct definition of terms listed in Column B.
Column A
Column B
1.
Hardworking
2.
Self-confident
3.
Profit-oriented
4.
Goal-oriented
a. b. c. d. e. f.
5.
Persistent
g.
6.
Responds or open to
h. i. j.
feedback 7.
Willing to listen
8.
Committed
9.
Reliable and has integrity
Ability to set realistic targets. Interest in money generation. To succeed, one must believe in one’s self. Working diligently and industriously. Being able to listen to the advice of others. Obtaining useful feedback and advice from others. Being patient and strives to achieve the goal. Ability to take measured or calculated risks. Being honest, fair and trustworthy. A major priority in the entrepreneur’s life.
10. Risk-taker
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B. Multiple Choice. Directions: Read and study the situation that describes entrepreneurial characteristics. Then answer the question by writing the letter of your choice in your assignment notebook or in the provided answer sheet.
Mrs. Gina Magno opens up her own retail business. She knows that her personal entrepreneurial characteristics are insufficient to ensure a successful operationalization of a business she has in mind. Your answers to the questions below will help in developing her PECs. 1. What PECs must she possess if there are customers who complain about the quality of her product? a. Patience b. Hardworking c. Versatile d. All of the above 2. Which of the following is NOT considered as a characteristic of an entrepreneur? a. Copes with failure b. Dependent c. Persistent d. Opportunity seeker 3. If she wants to ensure a profitable business operation, what characteristic will she maintain? a. Commitment b. Goal oriented c. Futuristic or future-oriented d. Opportunity seeker 4. Mrs. Magno follows the advice of a friend to be flexible especially if she intends to open a retail business. What PECs has been demonstrated by Mrs. Magno? a. Self- confidence b. Reliable and has integrity c. Responsive to feedback d. Persistent 15
5. She tells Mary, her best friend that she has a strong will and does not give up to find a solution to a business problem. What PECs has been demonstrated by Mrs. Magno? a. Hard work b. Persistence c. Self-confidence d. Risk- taking
Feedback Pre-assessment/ Post- assessment A.
Matching Type 1.d
6. f
2.c
7. e
3.b
8. j
4.a
9. i
5.g
10. h
B. Multiple Choice 1. a 2. b 3. d 4. c 5. b
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Technology and Livelihood Education Entrepreneurship
Module 2: Environment and Market
One of your greatest dreams in life is to become a successful entrepreneur. As a person, you are capable of developing your character and personality and how to respond to some business challenges and opportunities. You can make things happen by identifying the opportunities around you. You may ask yourself these questions: What do people need? What products and services are available in the market today? Can they be improved? How are they made or delivered? Can things be done better? cheaper? faster? cleaner? Can a product which is used for specific purpose be also used for some other purposes? You slowly find answers to these questions as you decide to do the first step in launching a business enterprise. Be cautious however, that you should develop a habit of identifying opportunities around you. Only then, you will find the activity both exciting and easy.
17
EXPLORE your Understanding Essential Question How does one select an entrepreneurial activity? Content Standard -
The learner demonstrates understanding of environment and market that relates with the career choice.
Performance Standard -
The learner formulates a business idea based on the analysis of the environment and market
Guide Questions: 1. How does one determine the product to be produced or services to be offered and delivered to the target market or customers in a particular community? 2. How does one select an entrepreneurial activity? 3. How can one respond effectively to a business enterprise?
Hello there! Are you ready to assess yourself if you are ready to generate potential business ideas? Let’s try by answering the succeeding pre-assessment.
Pre-assessment 1. The following are examples of peoples’ basic needs, except: a. Recreation b. Clothing c. Shelter d. Food
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2. Which of the following should be considered first by a prospective entrepreneur in choosing the right location for his/her store? a. b. c. d.
Types of merchandise Access of the target customers The attractiveness of the store layout The prevailing prices of goods in the area
3. Thong plans to put a “digi-print” studio in their locality. Which of the following will help him determine a successful plan for setting up of his business? a. b. c. d.
Survey of consumer associations Checking for similar business to avoid competition Getting feedback on the quality of service Conduct a SWOT analysis
4. Ceasar studies the population in his immediate community. He is doing this to – a. b. c. d.
identify his would be “suki”. predict his biggest buyer. select his favorite costumers. determine whom to sell his product or service.
5. When an entrepreneur improves and alter products to make it more appealing to target consumers, he/she is doing an -------- of the product. a. alteration b. invention c. innovation d. improvisation Lesson 1 Needs and Wants of People Everyone has his or her own needs and wants. However, people have different concepts of needs and wants.
Needs in business are important things that every
individual cannot do without in a society. These include: 1. Basic commodities for consumption 2. Clothing and other personal belongings, 3. Shelter, sanitation and health 19
4. Education and relaxation Basic needs are essential to every individual so he/she may be able to live with dignity and pride in the community of people. These needs can obviously help you generate business ideas. Wants are desires, luxury and extravagance that signify wealth and an expensive way of living. Wants or desires are considered above all the basic necessities of life. Some examples are the eagerness or the passion of every individual which are nonbasic needs like; fashion accessories, shoes, clothes, travelling around the world, eating in an exclusive restaurant; watching movies, concerts, plays, having luxurious cars, wearing expensive jewelry, perfume, living in impressive homes, and others. Needs and wants of people are the basic indicators of the kind of business that you may engage into because it can serve as the measure of your success. Some other good points that you might consider in business undertakings are the kind of people, their needs, wants, lifestyle, culture and tradition, and social orientation that they belong. Lesson 2 Generating Ideas for Business Here are some ways by which you may generate possible ideas for business. 1. Examine the existing goods and services. Are you satisfied with the product? What do other people who use the product say about it? How can it be improved? There are many ways of improving a product from the way it is made to the way it is packed and sold? You can also improve the materials used in crafting the product. In addition, you introduce new ways of using the product, making it more useful and adaptable to the customers’ many needs. When you are improving the product or enhancing it, you are doing an innovation. You can also do an invention by introducing an entirely new product to replace the old one. Business ideas may also be generated by examining what goods and services are sold outside by the community. Very often, these products are sold in a form that can still be enhanced or improved. 2. Examine the present and future needs. Look and listen to what the customers, institution, and communities are missing in terms of goods and 20
services. Sometimes, these needs are already obvious and felt at the moment. Other needs are not that obvious because they can only be felt in the future, in the event of certain developments in the community. For example, a town will have its electrification facility in the next six months. Only by that time will the entrepreneur could think of electrically- powered or generated business such as xerox copier, computer service, digital printing, etc. 3. Examine how the needs are being satisfied. Needs for the products and services are referred to as market demand. To satisfy these needs is to supply the products and services that meet the demands of the market. The term market refers to whoever will use or buy the products or service, and these may be people or institutions such as other businesses, establishments, organizations, or government agencies. There is a very good business opportunity when there is absolutely no supply to a pressing market demand. Businesses or industries in the locality also have needs for goods and services. Their needs for raw materials, maintenance, and other services such as selling and distribution are good sources of ideas for business. 4. Examine the available resources around you. Observe what materials or skills are available in abundance in your area. A business can be started out of available raw materials by selling them in raw form and by processing and manufacturing them into finished products. For example, in a copra-producing town, there will be many coconut husks and shells available as “waste” products. These can be collected and made into coco rags/doormat and charcoal bricks and sold profitably outside the community. A group of people in your neighborhood may have some special skills that can be harnessed for business. For example, women in the Mountain Province possess loom weaving skills that have been passed on from one generation to the next generation. Some communities there set up weaving businesses to produce blankets, as well as decorative items and various souvenir items for sale to tourists and lowland communities. Business ideas can come from your own skills. The work and experience you may have in agricultural arts, industrial arts, home economics, and ICT classes will provide you with business opportunities to acquire the needed skills which will earn for you extra income, should you decide to engage in income-generating
21
activities. With your skills, you may also tinker around with various things in your spare time. Many products were invented this way. 5. Read magazines, news articles, and other publications on new products and techniques or advances in technology. You can pick up new business ideas from Newsweek, Reader’s Digest, Business Magazines, Go Negosyo, KAB materials, Small- industry Journal. The Internet serves as a library where you may browse and surf on possible businesses. It will also guide you on how to put the right product in the right place, at the right price, at the right time. Listing of possible businesses to set up in an area may also be available from banks or local non-government organizations.
Lesson 3 Selecting the Right Idea
Once you have embarked on identifying the business opportunities, you will eventually see that there are many possibilities that are available for you. It is very unlikely that you will have enough resources to pursue all of them at once. Which one will you choose? You have to select the most promising one from among hundreds and one ideas. It will be good to do this in stages. In the first stage, you screen your ideas to narrow them down to about five choices. In the next stage, trim down the five choices to two options. In the final stage, choose between the two and decide which business idea worth pursuing. In screening your ideas, examine each one in terms of the following factors: 1. How much capital is needed to put up the business? 2. How big is the demand for the product? Do many people need this product and will continue to need it for a long time? 3. How is the demand met? Who are processing the products to meet the need (competition or demand)? How much of the need is now being met (supply)? 4. Do you have the background and experience needed to run this particular business? 5. Will the business be legal, not going against any existing or foreseeable government regulation? 6. Is the business in line with your interest and expertise?
22
Your answers to these questions will be helpful in screening which ones from among your many ideas are worth examining further and worth pursuing.
Lesson 4 Environmental Scanning There is a need to conduct environmental scanning to identity the needs and wants of people, the niche for your business mission, and to give attention to trends and issues. This may also serve as an evaluation of the type of the entrepreneurial activity appropriate in the community.
Environmental scanning is defined as a process of gathering, analyzing, and dispensing information for tactical or strategic purposes. The environmental scanning process entails obtaining both factual and subjective information on the business environments in which a company is operating.
Environment in the community can be viewed according to its technological, political, economic, and social aspects. For example, in the past, people in the community used personal computers but the transmission of development in terms of technology was interrupted because people were not satisfied with what they have today. They still look for the changes in their life and the corresponding in their environment. As a future entrepreneur, you must be well-versed in this kind of advancement and progression of your environment particularly in technology so as to secure the success of your future business. Always think of something new, something novel, authentic, reinvent the existing ones, and create your new version of goods/products, and services. For instance, your own hair straightening is herbal, while in the other salons it is made of synthetic chemicals. This kind of changes being made will effect the existing principles in business and industries that can be easily adapted to the changes in producing the products/services to meet the needs and wants of people in the community.
23
FIRM UP Your Understanding
In generating and the business Threatsidea, in you yourshould environment first identifytowhat ensure type of that business the is suited to yo products/goods and services you are planning to offer will be patronized within the easy reach by your target markets/consumers. Bear in mind these simple rules for successful SWOT analysis.
Be realistic about the strengths and weaknesses of your business when conducting SWOT analysis. SWOT analysis should distinguish between where your business is today, and where it could be in the future. SWOT should always be specific. Avoid any grey areas. Always apply SWOT in relation to your competition i.e. better than or worse than your competition. Keep your SWOT short and simple. Avoid complexity and over analysis SWOT is subjective.
DEEPEN Your Understanding People keep on searching for new things, new trends, and new issues. For these reasons, an entrepreneur hurriedly responds to these needs and wants of people. As generations come and go, another set of new trends will come or will exist. In order to adapt to the rapid changes in the business environment, the existing industries need to improve their products and services. But how can you generate business ideas with those strong competitors? There are three main sets of decisions that you need to make - what to produce, how to produce, and how to share or sell out the product to the market.
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Activity 1 Mini survey Directions: Conduct a mini survey in your immediate community.
Gather
pertinent data on population across age brackets as suggested in the matrix b e l
Age Bracket
Example: o 5 and below w 6- 10 years . old 11-15 years old O16-20 years pold
Population 35
Needs
Wants
Toys, coloring books, pajama
Wooden toys, glossy coloring books, etc. fashionable pajama
p o s i t e
each age group, indicate their probable needs and wants.
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21-25 years old 26-35 years old 35-45 years old 46-55 years old 56-65 years old 66 and above A ctivity 2 Screening business ideas Directions:
After filling out the chart above, try to list down all the probable
business opportunities which you may wish to venture in. Remember to consider the ideas and suggestions discussed in Lesson 3. Use the suggested matrix below to indicate your choice. Write your answers in your notebook. Example: Selling wooden toys
Positive Factors Strengths
Opportunities
Negative Factors Weaknesses
Threats
TRANSFER Of Learning Now that, you have all the information, are you ready to test your ability to generate your own business idea? If your answer is yes, start studying the sample vicinity map of a community with a population of two 26
thousand people. A new housing project will be constructed adjacent to Daang Hari St, close to Old Molino St., its main road. This housing project targets the homeowners who are young couples with two kids.
In this activity, you need to answer the questions that may lead to the generation of a probable business. Your answers to these questions will serve as the bases in formulating your own business ideas. 1.
Who do you think are your target consumers/markets?
2.
Where is the most ideal location to situate your business?
3.
Which
products
or
services
would
appeal
to
your
target
consumers/markets? 4.
Can you say that you have seized the most feasible business opportunity?
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Post-assessment 1. The following are examples of peoples’ basic needs, except: a. Recreation b. Clothing c. Shelter d. Food 2. Which of the following should be considered first by a prospective entrepreneur in choosing the right location for his/her store? a. b. c. d.
Type of merchandise The access of the target customers The attractiveness of the store layout The prevailing prices of goods in the area
3. Thong plans to put a “digi-print” studio in their locality. Which of the following will help him determine his plan for a success setting up of his business? a. b. c. d.
Survey of consumer associations Checking for similar business to avoid competition Getting feedback on the quality of service Conduct a SWOT analysis
4. Ceasar studies the population in his immediate community. He is doing this to – a. b. c. d.
identify his would be “suki”. predict his biggest buyer. select his favorite costumers. determine whom to sell his product or service.
5. When an entrepreneur improves and alter products to make it more appealing to target consumers, he/she is doing an -------- of the product. a. alteration b. invention c. innovation d. improvisation
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Feedback Pre-assessment and Post assessment 1. a 2. b 3. d 4. c 5. b
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Republic of the Philippines DEPARTMENT OF EDUCATION K to 12 Basic Education Curriculum Technology and Livelihood Education
Content Standard
Performance Standard
The learner demonstrates understanding of basic concepts, underlying theories and core competencies in computer systems and networks.
The learner independently provides quality and marketable service in computer hardware servicing in terms of computer systems and networks installation and diagnose and trouble shoot computer systems as prescribed in the TESDA Training Regulation.
MODULE 3: INSTALL COMPUTER SYSTEMS AND NETWORKS Number of Sessions (Time Allotment): 60 Hours (2 Quarters)
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Welcome to the next level of your modular training in Computer Hardware Servicing (CHS) under the Information and Communications Technology (ICT) Course. In this module you will have a great deal of understanding of Installing Computer Systems and Networks. At the end of this module you will be able to apply the knowledge and skills on installing computer hardware, operating system, software components and networks. Those skills are essential for you to pass the National Certification II in Computer Hardware Servicing. In this module, topics will be introduced progressively lesson by lesson for easy understanding. After carefully answering the diagnostic assessment, reading all the lessons, answering all the guide questions, masterfully performing all the activities, showing evidences of learning and finally answering the summative test, then you will have a considerable knowledge and skills in installing computer systems and networks essential to be successful in computer hardware servicing as one of the career option in ICT. Reminder! Just follow the instructions given in this module. Now let us start exploring new things in this module.
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In this module, there will be three (3) major topics that you will encounter: (1) plan and prepare for installation; (2) install hardware and software components and operating systems; and (3) conduct test on the installed computer system. The three major topics contain sub-topics that discuss the details on installing computer systems and networks. This module contains what to KNOW, what to PROCESS, what to REFLECT and UNDERSTAND as well as what to TRANSFER. The competencies for this module are: LO 1. Plan and prepare for installation Observe Occupational Health and Safety policies and procedures in planning for installation activity in accordance with requirements Familiarize with computer hardware, software component and other peripherals in accordance with established procedures on correct operation and safety policies Consult appropriate/ technical personnel to ensure that work is coordinated with others who are involved in the activity Obtain materials necessary to complete the work in accordance with established procedures Check the materials received against job requirements LO 2. Install equipment/devices (hardware, software components and peripherals) and operating systems Follow OHS procedures in installing devices, systems, networking devices, and peripherals Comply with the requirements in installing devices,/systems, networking devices, and peripherals Install computer systems, networking devices and peripherals in accordance with job requirements Perform installation of devices and variety of operating systems in accordance with customer/client’s requirements Obtain approval from appropriate personnel before implementing contingency procedures Respond to unplanned events or conditions in accordance to established procedures Check the quality of the work undertaken in accordance with the established procedures
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LO 3. Conduct test on the installed computer system Follow OHS policies and procedures in conducting tests Check circuits and systems being isolated using specified testing procedures Test devices, systems and/or installation to determine its conformity with the requirements Undertake final inspections on the installed devices, systems to ensure conformity with the requirements Accomplish technical reports on the tests conducted Follow procedures in forwarding documentation to appropriate personnel and/or authority on the test conducted In order to master the above listed competencies, you must be knowledgeable of the topics under what to KNOW, perform activities required under what to PROCESS, accomplish additional meaningful tasks under what to REFLECT and UNDERSTAND and finally show some evidences of your learning by transferring what you have learned in a different context under what to TRANSFER.
You will be challenged to dig deeper into your prior knowledge and previous experiences about computer hardware servicing. SKILLS TEST Direction: Listed below are some of the most important skills that you must gain in order to render quality service when you enter the real world of Computer Hardware Servicing. Read the skills carefully. Write “YES” if you are familiar with the skill and “NO” if not. Feel free to answer each skill. Write your answers in your notebook. Skills in Computer Hardware Servicing I can open a computer case. I can connect the mouse. I can connect the keyboard. I can connect the monitor. I can apply occupational health and safety precautions while working. I can remove the system fan. I can detach the power supply from the system unit. I know how to remove the RAM from the motherboard. I can remove the hard drive from the system unit. I can install the power supply. I know how to install the motherboard. I can install the internal drives in a system unit. I know how to attach RAM in the memory socket. I can install CD / DVD drives.
YES
NO
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I know how to install an operating system I know how to configure a hardware components and its related software I know the procedures in testing the installed computer components
The following topics will enable you to be familiar with planning and preparing for installation, install equipment and devices, and conduct test on the installed computer system. All you need to do is to read carefully all the topics and apply the skills you’ve gained through the distinct activities provided in this module. LESSON 1: PLAN AND PREPARE FOR INSTALLATION This lesson is intended to develop your skills in planning and preparing for installation of computer devices and operating system. At the end of this lesson you are expected to: Observe OHS policies and procedures in planning for installation activity in accordance with requirements Familiarize with computer peripheral/ devices/systems in accordance with established procedures correct operation and safety Consult appropriate/ technical personnel to ensure that work is coordinated with others who are involved in the activity Obtain materials necessary to complete the work in accordance with established procedures Check the materials received against job requirements
OCCUPATIONAL HEALTH AND SAFETY POLICIES AND PROCEDURES Occupational Health and Safety (OHS) Policy – An Information and communication technology (ICT) student should know how to behave when working in the computer laboratory, as well as implement a safe way of accomplishing every task. Safety practices should be learned early and always adheres in working with any electrical and electronic device, including personal computers and its peripherals. This is for your protection as well as to the people working with you,
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and for the devices that you are using. The basis for this process begins with Occupational Health and Safety Policies. Occupational safety and health (OSH) is a planned system of working to prevent illness and injury where you work by recognizing and identifying hazards and risks. Health and safety procedure is the responsibility of all persons in the computer and technology industries. You must identify the hazards where you are working and decide how dangerous they are. Eliminate the hazard or modify the risk that it presents. Occupational Health and Safety standards Each student has a responsibility to their colleagues and their organization to report and act upon any potential workplace hazard. Students need to be aware of the type of hazards that are possibly present in their work environment. Procedure 1. Identify the hazard 2. Clear the area close to the hazard 3. Partition the hazard off or clearly identify the area to protect other people from harm 4. If the hazard is easily and safely cleared, then do so If not… 5. Report the hazard to the appropriate person (such as teacher in charge, principal etc.) to obtain assistance 6. Following clearing of the hazard fill out the correct documentation to assist in identifying improved practice to reduce further incidence of hazards. All hazards must be reported using Accidental Report form. This enables us to track the kinds of hazards we have in our workplace, and take action where necessary to make it safer for all student and clients. Accident reports Forms are used to give specific details with regards to the accidents happened in the laboratory during experiments. Accident reports contain the following details:
Name of the person injured Date and time of the accident Type of injury First aid given Action taken to prevent further accidents
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Accident report sample form Date: Form No:
Accident Report Form Rm. No:
Name:
Type of Injury
Yr/Sec:
Cause of Injury
Remedy
Hazardous substances If the workplace hazard appears to be dangerous to staff and clients and professional assistance is required: A. Call the supervisor or manager and advise them of the problem and the urgency of the matter. B. Depending on the risk it may be called as an evacuation. C. Follow the evacuation procedure. D. The supervisor or manager will call in the fire brigade or specialized personnel who will deal with the spill. Fire exits All fire exits should be kept clear of from obstacles. All students have a responsibility to make sure that chairs, empty boxes or any other type of obstacle are not placed in or near fire exit doorways. All corridors also need to have equipment stored on one side only to ensure that in the event of an emergency there is a clear exit. Fire Safety Procedure Each work area has a designated fire warden, who in the event of a fire will take charge. They are recognized by the wearing of a red hard hat.
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If you find the fire
Assess the danger prior to doing anything. If it is safe to move assist anyone in the vicinity of the fire away from danger. If it is possible close the door to the fire area. Call for assistance. Verbally call FIRE, FIRE, in a loud and clear voice. Break the glass section of the fire alert call point. Call to the switch; ensure you know where the fire is, any other details that may be of assistance to the fire brigade. Details could be size of the fire, cause or type of fire, any people hurt or trapped, has anyone tried to put it out. If safe to do so, attack the fire with the correct extinguisher or fire hose.
If the designated fire officer is not present, someone quickly needs to take responsibility and: 1. 2. 3. 4. 5.
Locate the source of the fire. Locate any people. Remove all people from the building. Once outside do a head count? Notify the authorities.
Personal Safety While Working with PC’s Computer equipment can be dangerous, and you or others can be injured or even killed if you don’t follow proper safety guidelines when working along with PC’s. The following are some precautionary measures to take before working with any computer equipment: Wear shoes with non-conductive rubber soles to help reduce the chance of being shocked or seriously injured in an electrical accident. Do not work on components that are plugged into their power source. Do not remove expansion cards from a computer when it is turned on. Remove jewelries when working inside any computer related equipment. Be sure not to mix electronic components and water.
Applying OH&S Policies 1.
Group yourselves into six members.
2.
Conduct a simulation on: “Applying OHS Policies and Procedures”.
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3.
The performance will be rated according to the following:
Performance Criteria: 5
- Have shown five OHS policies in different areas
4
- Have shown four OHS policies in different areas
3
- Have shown three OH&S policies in different areas
2
- Have shown two OH&S policies in different areas
1
-
Have not shown any OH&S policies
UNDERSTANDING COMPUTER A computer is one of the most brilliant inventions of mankind. Thanks to the computer technology, we were able to achieve storage and processing of huge amounts of data; we could rest our brains by employing computer memory capacities for storing information. Due to computers, we have been able to speed up daily work, carry out critical transactions and achieve accuracy and precision in work. Computers of the earlier years were of the size of a large room and were required to consume huge amounts of electric power. However, with the advancing technology, computers have shrunk to the size of a small watch. Depending on the processing power and size of computers, they have been classified under various types. Let us look at the classification of computers. Different Types of Computers Based on the operational principle of computers, they are categorized as analog, digital and hybrid computers. Analog Computers: These are almost extinct today. These are different from a digital computer because an analog computer can perform several mathematical operations simultaneously. It uses continuous variables for mathematical operations and utilizes mechanical or electrical energy.
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Figure1. Different Types of Computer Digital Computers: They use digital circuits and are designed to operate on two states, namely bits 0 and 1. They are analogous to states ON and OFF. Data on these computers is represented as a series of 0s and 1s. Digital computers are suitable for complex computation and have higher processing speeds. They are programmable. Digital computers are either general purpose computers or special purpose ones. Special purpose computers, as their name suggests, are designed for specific types of data processing while general purpose computers are meant for general use. Hybrid Computers: These computers are a combination of both digital and analog computers. In this type of computers, the digital segments perform process control by conversion of analog signals to digital ones. Classification of Computers The following are the classification of the different types of computers based on their sizes and functionalities: Mainframe Computers: Large organizations use mainframes for highly critical applications such as bulk data processing and ERP. Most of the mainframe computers have the capacities to host multiple operating systems and operate as a number of virtual machines and can substitute for several small servers. Minicomputers: In terms of size and processing capacity, minicomputers lie in between mainframes and microcomputers. Minicomputers are also called mid-range
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systems or workstations. The term began to be popularly used in the 1960s to refer to relatively smaller third generation computers. Servers: They are computers designed to provide services to client machines in a computer network. They have larger storage capacities and powerful processors. Running on them are programs that serve client requests and allocate resources like memory and time to client machines. Usually they are very large in size, as they have large processors and many hard drives. They are designed to be fail-safe and resistant to crash. Supercomputers: The highly calculation-intensive tasks can be effectively performed by means of supercomputers. Quantum physics, mechanics, weather forecasting, molecular theory are best studied by means of supercomputers. Their ability of parallel processing and their well-designed memory hierarchy give the supercomputers, large transaction processing powers.
Figure2. Classification of Computer
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Microcomputers: A computer with a microprocessor and its central processing unit it is known as a microcomputer. They do not occupy space as much as mainframes do. When supplemented with a keyboard and a mouse, microcomputers can be called personal computers. A monitor, a keyboard and other similar input output devices, computer memory in the form of RAM and a power supply unit come packaged in a microcomputer. These computers can fit on desks or tables and prove to be the best choice for single-user tasks. Personal computers come in different forms such as desktops, laptops and personal digital assistants (refer to Figure 3). Let us look at each of these types of computers. Desktops: A desktop is intended to be used on a single location. The spare parts of a desktop computer are readily available at relatively lower costs. Power consumption is not as critical as that in laptops. Desktops are widely popular for daily use in the workplace and households. Laptops: Similar in operation to desktops, laptop computers are miniaturized and optimized for mobile use. Laptops run on a single battery or an external adapter that charges the computer batteries.
Figure3. Types of Personal Computer 40
Netbooks: They fall in the category of laptops, but are inexpensive and relatively smaller in size. They had a smaller feature set and lesser capacities in comparison to regular laptops, at the time they came into the market. Personal Digital Assistants (PDAs): It is a handheld computer and popularly known as a palmtop. It has a touch screen and a memory card for storage of data. PDAs can also be used as portable audio players, web browsers and smart phones. Most of them can access the Internet by means of Bluetooth or Wi-Fi communication. Tablet Computers: Tablets are mobile computers that are very handy to use. They use the touch screen technology. Tablets come with an onscreen keyboard or use a stylus or a digital pen. Apple's iPod redefined the class of tablet computers. Wearable Computers: A record-setting step in the evolution of computers was the creation of wearable computers. These computers can be worn on the body and are often used in the study of behavior modeling and human health. Military and health professionals have incorporated wearable computers into their daily routine, as a part of such studies. When the users' hands and sensory organs are engaged in other activities, wearable computers are of great help in tracking human actions. Wearable computers do not have to be turned on and off and remain in operation without user intervention.
Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 1. These are mobile computers that are very handy to use. 2. They are computers designed to provide services to client machines in a computer network. 3. They are also called mid-range systems or workstations. 4. A computer with a microprocessor and its central processing unit. 5. They fall in the category of laptops, but are inexpensive and relatively smaller in size. 6. A type of computer which is intended be used on a single location. 7. They use digital circuits and are designed to operate on two states, namely bits 0 and 1. 8. Computers that have the capacities to host multiple operating systems and operate as a number of virtual machines and can substitute for several small servers. 9. It is a handheld computer and popularly known as a palmtop. 10. These computers can be worn on the body and are often used in the study of behavior modeling and human health. 41
COMPUTER SYSTEM, DEVICES AND PERIPHERALS As an aspiring computer technician, it is very important to know the system that runs your computer and different devices attached to it. Each device plays an important role, without each other computer system will not work properly. What is an Operating System? The operating system is the most important program that runs on a computer. Every general-purpose computer must have an operating system to run other programs. Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system has even greater responsibilities and powers. It is like a traffic cop -- it makes sure that different program and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems can be classified as follows: o Multi-user: Allows two or more users to run programs at the same time. Some operating systems permit hundreds or even thousands of concurrent users. Linux Unix Windows 2000 o Multiprocessing : Supports running a program on more than one CPU. Linux Unix Windows 2000 o Multitasking : Allows more than one program to run concurrently. Unix Windows 2000 and Windows multi point o Multithreading : Allows different parts of a single program to run concurrently.
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Linux Unix Windows 2000 and Windows 7 o Real time: Responds to input instantly. General-purpose operating systems, such as DOS and UNIX, are not real-time. Operating systems provide a software platform on which other application programs can run. The application programs must be written to run on top of a particular operating system. Your choice of operating system, therefore, determines to a great extent the applications you can run. For PCs, the most popular operating systems are DOS, OS/2, and Windows, but others are available, such as Linux. What are the devices of a computer? The physical, touchable, electronic and mechanical parts of a computer are called the hardware which is composed of different devices attached to the computer. The following list represents a basic set of devices found in most Personal Computers. 1. System Unit- The main part of a microcomputer, sometimes called the chassis. It includes the following parts: Motherboard, Microprocessor, Memory Chips, Buses, Ports, Expansion Slots and Cards.
Figure4. Tower Type System Unit
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2. Motherboard / Mainboard / System Board- The main circuit board of a computer. It contains all the circuits and components that run the computer.
Figure5. Modern Motherboard 3. CPU (Central Processing Unit) - The processor is the main “brain” or “heart” of a computer system. It performs all of the instructions and calculations that are needed and manages the flow of information through a computer.
Figure6. Examples of CPU (Intel Core 2 Duo and AMD Athlon) 4. Primary storage- (internal storage, main memory or memory) is the computer's working storage space that holds data, instructions for processing and processed data (information) waiting to be sent to secondary storage. Physically, primary storage is a collection of RAM chips.
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Two (2) Types of Memory a. ROM – (Read Only Memory) ROM is non-volatile, meaning it holds data even when the power is ON or OFF. b. RAM – (Random Access Memory) RAM is volatile, meaning it holds data only when the power is on. When the power is off, RAM's contents are lost.
Figure 7.Examples of RAM
5. Expansion Bus - A bus is a data pathway between several hardware components inside or outside a computer. It does not only connect the parts of the CPU to each other, but also links the CPU with other important hardware. Figure 8.Expansion Bus 6. Adapters- Printed-circuit boards (also called interface cards) that enable the computer to use a peripheral device for which it does not have the necessary connections or circuit boards. They are often used to permit upgrading to a new different hardware.
Figure 9. Adapter (Network Adapter) 45
7. Power Supply Unit (PSU) - Installed in the back corner of the PC case, next to the motherboard. It converts 120vac (standard house power) into DC voltages that are used by other components in the PC.
Figure10. Power supply 8. Hard Disk Drive (HDD) - Also known as hard drive, is a magnetic storage device that is installed inside the computer. The hard drive is used as permanent storage for data. In a Windows computer, the hard drive is usually configured as the C: drive and contains the operating system and applications. Figure 11.Hard Disc 9. Optical Drive- An optical drive is a storage device that uses lasers to read data on the optical media. There are three types of optical drives: Compact Disc (CD), Digital Versatile Disc (DVD) and Blu-ray Disc (BD).
Figure12. CD ROM 10. Digital Versatile Disc (DVD) - Designed to optically access data stored on a DVD. A laser moves back and forth near the disk surface and accesses data at a very fast rate. Figure 13.DVD ROM What are the input and output devices of a computer? The devices attached to a personal computer can be classified into two- the input and output devices. Input Device is composed of a device that accepts data and instructions from the user or from another computer system. While, output
46
device is any piece of computer hardware that displays results after the computer has processed the input data that has been entered. Two (2) Types of Input Devices 1. Keyboard Entry – Data is inputted to the computer through a keyboard. Keyboard - The first input device developed for the PC. Data is transferred to the PC over a short cable with a circular 6-pin Mini-din connector that plugs into the back of the motherboard.
Figure14. Keyboard 2. Direct Entry – A form of input that does not require data to be keyed by someone sitting at a keyboard. Direct-entry devices create machine-readable data on paper, or magnetic media, or feed it directly into the computer’s CPU. Three Categories of Direct Entry Devices 1. Pointing Devices - An input device used to move the pointer (cursor) on screen. Mouse - The most common 'pointing device' used in PCs. Every mouse has two buttons and most have one or two scroll wheels. Figure15. Mouse
Touch screen- A display screen that is sensitive to the touch of a finger or stylus. Used in myriad applications, including ATM machines, retail pointof-sale terminals, car navigation and industrial controls. The touch screen became wildly popular for smart phones and tablets.
Figure16. Touch Screen Devices 47
Light Pen - A light-sensitive stylus wired to a video terminal used to draw pictures or select menu options. The user brings the pen to the desired point on screen and presses the pen button to make contact.
F i Figure17. Light Pen
Digitizer Tablet - A graphics drawing tablet used for sketching new images or tracing old ones. Also called a "graphics tablet," the user contacts the surface of the device with a wired or wireless pen or puck. Often mistakenly called a mouse, the puck is officially the "tablet cursor."
Figure18. Digitizer Tablet 2. Scanning Devices- A device that can read text or illustrations printed on paper and translates the information into a form the computer can use.
Figure19. Image scanner
Figure20. Bar Code Reader 48
3. Voice- Input Devices - Audio input devices also known as speech or voice recognition systems that allow a user to send audio signals to a computer for processing, recording, or carrying out commands. Audio input devices such as microphones allow users to speak to the computer in order to record a voice message or navigate software.
Figure 21. Microphones Output Devices 1. Computer Display Monitor- It displays information in visual form, using text and graphics. The portion of the monitor that displays the information is called the screen or video display terminal. Types of Monitor a. CRT Monitors - Cathode Ray Tubes (CRT) were the only type of displays for use with desktop PCs. They are relatively big (14" to 16" deep) and heavy (over 15 lbs).
Figure22. Types of Monitor b. LCD Monitors – Liquid Crystal Display (LCD) technology has been used in laptops for some time. It has recently been made commercially available as monitors for desktop PCs.
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c. LED Monitors (Light Emitting Diode) - A display and lighting technology used in almost every electrical and electronic product on the market, from a tiny on/off light to digital readouts, flashlights, traffic lights and perimeter lighting.
2. LCD Projectors- utilize two sheets of polarizing material with a liquid crystal solution between them. An electric current passed through the liquid causes the crystals to align so that light cannot pass through them. Each crystal, therefore, is like a shutter, either allowing light to pass through or blocking the light.
FFigure23. LCD Projector 3. Smart Board - A type of display screen that has a touch sensitive transparent panel covering the screen, which is similar to a touch screen.
Figure24. Smart Board 4. Printer - A device that prints text or illustrations on paper. Types of printer a) Ink-Jet or Bubble-Jet Printer - spays ink at a sheet of paper. Ink-jet printers produce high-quality text and graphics. b) Laser Printer - Uses the same technology as copy machines. Laser printers produce very high quality text and graphics. c) LCD and LED Printer- Similar to a laser printer, but uses liquid crystals or lightemitting diodes rather than a laser to produce an image on the drum. d) Line Printer - Contains a chain of characters or pins that print an entire line at one time. Line printers are very fast, but produce low-quality print.
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Figure 28.Types of Printer
(e) Thermal Printer- An inexpensive printer that works by pushing heated pins against heat-sensitive paper. Thermal printers are widely used in calculators and fax machines. 5. Speakers - Used to play sound. They may be built into the system unit or connected with cables. Speakers allow you to listen to music and hear sound effects from your computer.
Figure 29.Speaker
What is a Storage Device? Aside from the devices attached on a PC, there are also the so called storage devices that perform a special task in computing system. Storage device is any apparatus for recording computer data in a permanent or semi-permanent form.
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Figure 30.Storage Devices
Types of storage devices Floppy diskette- is a random access, removable data storage medium that can be used with personal computers. The term usually refers to the magnetic medium housed in a rigid plastic cartridge measuring 3.5 inches square and about 2millimeters thick. Also called a "3.5-inch diskette," it can store up to 1.44 megabytes (MB) of data. Compact disc (CD) – also called optical disc is a nonmagnetic, polished metal disk used to store digital information. The disc is read by the CD- ROM. Digital Versatile Disc (DVD)- an optical disc technology with a 4.7 gigabyte storage capacity on a single-sided, one-layered disk, which is enough for a 133-minute movie. Jump drive and USB flash drive- is a plug-and-play portable storage device that uses flash memory and is lightweight enough to attach to a key chain. A USB drive can be used in place of a floppy disk, Zip drive disk, or CD. Hard drive- is the main, and usually largest, data storage device in a computer. The operating system, software titles and most other files are stored in the hard disk drive.
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LS-120- is a drive which supports a special floppy diskette which can store up to 120MB of information as well as being backwards compatible and still supporting the standard 1.44MB floppy diskettes. Zip drive-is a small, portable disk drive used primarily for backing up and archiving personal computer files.
Direction: In the puzzle below, look for the 10 hidden computer devices and determine whether it belongs to INPUT, OUTPUT or STORAGE DEVICE. REVEAL THE PARTS OF A COMPUTER SYSTEM C P Z Q I A C N G A R E K L M W K Y R M
G O A U R O U H H S Y S W E Q P Z B N J
M R M I T N H X L L B A M I U T Z Y F G
M K Z P B R L S P W E C I O N H M V H N
Q I W R A D Q P F W A M Q M D E L X T Y
F R G Y R C U U H T E E K E H R H E U H
Y X W P S S T P G R M T K H M M M W B V
L N P T R G Z D P A J S I Y R K O P U J
1. ________________________ 2. ________________________ 3. ________________________ 4. ________________________ 5. ________________________ 6. ________________________ 7. ________________________ 8. ________________________ 9. ________________________ 10. ________________________
W A X E U S G A I O I Y S A W Z U L G D
K A W X Y I D K Z S X S I S O W S Q L U
C O A V L L C O T Q K D O K Q J E Q S G
P A F I G N J Z A F P D R S U U C Y N F
A U V R R H F X F A I E R A H B K O P L
H A R D D I S K D R I V E I O J Y V F U
K K Q B V Q E M O E X W I I V B C N J X
H B V W J S E T U H E T L D K E Y H W O
G M X A B M J Y U B C I D G T A V E N M
C P U O O I K U F G F D F Z M P Y Z K K
N H M R C L O Z T M H V F K J Q S H N D
H U Y B U X U S R O T I N O M Z D D J A
______________________ ______________________ ______________________ ______________________ ______________________ ______________________ ______________________ ______________________ ______________________ ______________________ 53
Matching Type. Match column A with Column B and write your answer on a separate sheet of paper.
A. 1. It serves as the brain of computer. 2. Printed-circuit boards (also called interface cards) that enable the computer to use a peripheral device 3. Also called read/write memory 4. a small, portable disk drive used primarily for backing up files 5. The main circuit board of a computer 6. Also called diskette 7. Acts as a pointing device 8. Device that makes sounds, clips and any audio materials be heard. 9. Component that reads and record data in CDs and DVDs. What is a Network? 10. it is a visual device that displays the information
a. b. c. d. e. f. g. h. i. j. k. l. m.
B. Adapter CD- ROM CPU Floppy disk Microphone Monitor Motherboard Mouse Optical Drive RAM ROM Speaker Zip Drive
To deepen your understanding with regard to the different components / devices of a computer, utilize the Internet and the website www.professormesser.com, view the video regarding parts of the computer. Use the URLs below: 1. http://www.professormesser.com/free-a-plus-training/220-801/an-overview-ofmotherboard-types/
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2. http://www.professormesser.com/free-a-plus-training/220-801/an-overview-ofcpu-socket-types/
3. http://www.professormesser.com/free-a-plus-training/220-801/an-overview-ofcpu-socket-types/
4. http://www.professormesser.com/free-a-plus-training/220-801/an-overview-ofdisplay-device-types/
5. http://www.professormesser.com/free-a-plus-training/220-801/an-overview-ofpc-input-devices/
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After watching the videos, answer the following questions: 1. What are the different types of motherboard shown in the video? 2. What are the different sizes of a motherboard? 3. What are the different types of CPU? 4. Describe the different types of memory cited in the video. 5. What do you think is the most efficient monitor used in our computers nowadays? 6. Give at least 5 input devices featured in the video presentation.
Role Playing The class will be divided into 5 groups (depending on the class size), each group will have a minimum of 5 members and maximum of 10. Each member should have a special role pertaining to the devices of a computer and their functions. Each group will be tasked to showcase their talents in front of the class. Each presentation will be rated using the following criteria: PERFORMANCE SCORE CARD
CRITERIA
PERCENTAGE
SCORE
Accuracy (Accurate role and function of a 30% device was accurately shown) Presentation (Organization or sequence 30% of the play, appropriate gestures was used) Clarity (Clearly delivered each topic) 30% Team work (cooperation of each member) 10% Performance Rating
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NETWORK A network consists of two or more computers that are linked in order to share resources (such as printers and CD-ROMs), exchange files, or allow electronic communications. The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams. There are three basic types of networks which includes the following:
Local Area Network (LAN) Wide Area Network (WAN)
Local Area Network A Local Area Network (LAN) is a network that is confined to a relatively small area. It is generally limited to a geographic area such as a writing lab, school, or building. Rarely are LAN computers more than a mile apart. In a typical LAN configuration, one computer is designated as the file server. It stores all of the software that controls the network, as well as the software that can be shared by the computers attached to the network. Computers connected to the file server are called workstations. The workstations can be less powerful than the file server, and they may have additional software on their hard drives. On most LANs, cables are used to connect the network interface cards in each computer. Wide Area Network Wide Area Networks (WANs) connect larger geographic areas, such as Florida, the United States, or the world. Dedicated transoceanic cabling or satellite uplinks may be used to connect this type of network. Networking Devices Consist of, but are not limited to non-local printers, workstations, servers, webcams, data loggers, instruments, dial-in devices, and, in general anything that requires an Ethernet connection. These devices are supported on a best-effort basis limited by the staffing and equipment level available.
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Hub is a small, simple, inexpensive device that joins multiple computers together. Many network hubs available today support the Ethernet standard. Other types including USB hubs also exist, but Ethernet is the type traditionally used in home networking.
Ethernet switch is a device that gathers the signals from devices that are connected to it, and then regenerates a new copy of each signal.
Bridge is a device filters data traffic at a network boundary. Bridges reduce the amount of traffic on a LAN by dividing it into two segments.
Routers are small physical devices that join multiple networks together.
Network gateway is an internetworking system capable of joining together two networks that use different base protocols. A network gateway can be implemented completely in software, completely in hardware, or as a combination of both.
Modem is a contraction of the terms modulator and demodulator. Modems perform a simple function: They translate digital signals from a computer into analog signals that can travel across conventional phone lines. The modem modulates the signal at the sending end and demodulates at the receiving end.
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Network interface is a device that connects a client computer, server, printer or other component to your network. Most often, a network interface consists of a small electronic circuit board that is inserted into a slot inside a computer or printer. Alternatively, some computers, printers, or other services include network interfaces as part of their main circuit boards (motherboards).
Network firewall protects a computer network from unauthorized access. Network firewalls may be hardware devices, software programs, or a combination of the two. Network firewalls guard an internal computer network (home, school, business intranet) against malicious access from the outside. Network firewalls may also be configured to limit access to the outside from internal users.
Direction: Identify what is being described in the following sentences and write your answer on a separate sheet of paper. 1. It protects a computer network from unauthorized access. 2. Type of network that connect larger geographic areas, such as Florida, the United States, or the world. 3. This is an internetworking system capable of joining together two networks that use different base protocols. 4. It is consists of two or more computers that are linked in order to share resources (such as printers and CD-ROMs), exchange files, or allow electronic communications. 5. They translate digital signals from a computer into analog signals that can travel across conventional phone lines. 6. It is a device that connects a client computer, server, printer or other component to your network. 7. A device filters data traffic at a network boundary. 8. It is a device that gathers the signals from devices that are connected to it, and then regenerates a new copy of each signal. 9. It is a small, simple, inexpensive device that joins multiple computers together. 10. Type of network that is confined to a relatively small area.
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Now, that you are done with the introduction of network as well as the networking devices, to enlighten your understanding and knowledge have some more readings about it thru books and other resources. You should consider the following topics for research: 1. Different types of Network Topology 2. Common networking tools After the research, you can also deepen your understanding by watching a video presentation using the URL below: o http://www.professormesser.com/free-a-plus-training/220-801/networkdevices/
o http://www.professormesser.com/free-a-plus-training/220-801/networktopologies-3/
After the video presentation here are your tasks: 1. List down all the network devices and their advantages cited in the video. 2. List down the different network topologies and their differences. 60
MATERIALS, TOOLS, EQUIPMENT and TESTING DEVICES The following tools and equipment are classified according to their functions and uses. Equipment and Accessories LAN Card UPS Server 24 port-hub Modem Fax machine PC Video camera USBExternalCD writer USB scanner USB printers USB Flash Drive
Tools Screwdriver(standard) Screwdriver(Philips) Long nose pliers Mechanical pliers Allen wrench Multitester Crimping tools Soldering iron (30 watts) Wire stripper LAN Tester Anti-static wrist wrap Device drivers/installers
LAN Card – is a network interface card. This is a computer circuit board or card that is installed in a computer so that it can be connected to a network.
Server – is a part of a network. It is a special computer that users on the network can access to carry out a particular job.
Port hub /Port – is a connector on the back of a computer or other device. A port is either a serial port or a parallel port.
Modem - (Modulator-Demodulator) The modem is a device that allows a given computer to share data or otherwise a device which let computers exchange information
Materials Software applications Network OS Software RJ 45 UTP Cat 5 cable Motherboard’s manual and installer Sound device driver installer
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Scanner- it is an input device that read text or illustration printed on paper, translates the information into a form that a computer can use
Flat Screw Driver – is used to drive or fasten negative slotted screws
USB – Universal Serial Bus, a hardware interface for low-speed peripherals such as the keyboard, mouse, joystick, scanner, printer and telephony devices.
Printer - is a piece of hardware that produces a paper copy (also known as ‘hardcopy’) of the information generated by the computer.
RAM – Random Access Memory, is a primary memory. This memory is used inside the computer to hold programs and data while it is running.
BIOS – Basic Input / Output System, chip that controls the most basic functions of the computer and performs a self-test every time you turn it on.
Flash drive– RAM that can retain data without electrical power. It is widely used for BIOS chips and for digital camera and digital music storage
Video Camera - camera using videotape: a camera that records onto videotape
Long nose Pliers – is used for holding, bending and stretching the lead of electronics component or connecting wire.
Soldering Iron – is used to join two or more metal conductors with the support of soldering lead melted around it.
Desoldering Tool – is used to unsolder unwanted parts or component in the circuit with the support of soldering pencil
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Philips Screw Driver- is used to drive or fasten positive slotted screws
LAN Tester- for RJ11,12,45 & BNC w/ Remote Unit This ergonomic tester is designed to test most network cable wiring. You can either conduct an auto or manual test.
UTP – Unshielded Twisted Pair, is a popular type of cable used in computer networking that consists of two shielded wires twisted around each
Using Testing Tools and Equipment A. Direction: Identify the following tools and materials, give their uses.
1.
2.
3.
4.
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B. Identification. Direction: Identify the appropriate term described in each sentence. Use a separate sheet for your answers. ________1. It is a connector at the black of a computer or other device. ________2. A computer circuit board installed in a computer so that it can be connected to a network. ________3.A device that allows a given computer to share a data. ________4. An input device that read text or illustration printed on paper, translated the information into a form that a computer that can use. ________5.The least expensive and most popular network media.
For you to deepen your knowledge and skills and understanding in planning and preparing for installation, you need to determine the location of the devices / systems to be used, obtain materials necessary to complete the work in accordance with established procedures and check the materials received against job requirements . Your task is to have a research, find as well and watch video presentations relating and showing the following: 1. Consult appropriate technical personnel to ensure that work is coordinated with others who are involved in the activity; 2. Proper location / storage of the devices / systems and materials; 3. Correct way of obtaining the necessary materials to complete the work; 4. Fill up job order forms, request form and report sheets; and 5. Appropriate procedures in in checking the materials received. After doing the above tasks, make sure that you have a detailed documentation of it. Write your reflections on your notebooks or other sheet of paper.
After reflecting on the task given to you, it’s your chance now to transfer what you have learned from the activity by having a presentation in front of the class. You will be grouped with 5 members during the presentation. Make use of your creativity in presenting each topic to awaken the interest of your classmates.
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LESSON2. INSTALL EQUIPMENT / DEVICES and SYSTEMS This lesson is designed to give you the proper procedures used in installing devices and operating system of a personal computer, alongside with it is the basic computer configuration set up. At the end of this lesson you should be able to: a) Apply OHS procedures in installing devices, systems, networking devices, and peripherals; b) Comply with the requirements in installing devices,/systems, networking devices, and peripherals; c) Install computer systems, networking devices and peripherals in accordance with job requirements; d) Perform variations in installing devices and systems in accordance with customer/client’s requirements; e) Obtain approval from appropriate personnel before implementing contingency procedures; f) Respond to unplanned events or conditions in accordance to established procedures; and g) Check the quality of the work undertaken in accordance with the established procedures.
SAFETY PRECAUTIONS Personal Protective Equipment - It refers to protective clothing, helmets, goggles, or other gear designed to protect the wearer's body or clothing from injury by electrical hazards, heat, chemicals, and infection, for job-related occupational safety and health purposes. PPE can also be used to protect the working environment from pesticide application, pollution or infection from the worker (for example in a microchipfactory). It is important that students and teachers during their laboratory period should be required to use personal protective equipment. Some of these are:
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Goggles A large spectacles, with shields around the rims, for protecting the eyes from dust, excessive light, wind, etc.
Rubber Sole A special type of shoes used to prevent electrical shock and for waterproofing and insulating purposes.
Apron A garment worn over the front of the body as a protection for one’s cloth.
Face Mask A covering for the face to prevent the inhaling or absorbing dust and other chemicals
Gloves The covering material with a separate sheath for each finger used for hand protection.
Anti-Static and Safety Precautions The little shock you experience while you are walking across a carpeted floor or when you touched a door knob, table, counter or even another person is a result of static electricity. Static electricity is the discharge of electricity between two objects with different electrical potential. Humans can't feel a static shock until it is several thousand volts strong, but it takes less than 30 volts to fry a sensitive computer component, such as a stick of RAM or a processor. That's why computer technicians and home computer builders have to guard their computers against the deadly ravages of static electricity, as well as take steps to avoid injury.
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Safety and Anti-Static Rules
Always use an anti-static wrist strap when working on a computer (except when working on monitors) Always disconnect a computer from the AC power and from any powered peripherals while you are working on it. Always grasp a metal part of the computer chassis with your bare hand before you touch anything inside. Do this even if you are wearing an anti-static wristband. Always handle electronic components by a non-conducting (non-metallic) edge. Don't touch the pins or other connectors. Never plug an ATX power supply into AC power unless it is connected either to a computer's motherboard or to a dummy test load. Always use a UL-approved surge protector or an Uninterruptible Power Supply that incorporates surge and spike protection. Never eat, drink, or smoke while working on a computer.
True or False Direction: Write TRUE if the statement is correct and FALSE otherwise. 1. 2.
3. 4. 5. 6. 7. 8. 9. 10.
Always disconnect a computer from the AC power and from any powered peripherals while you are working on it. Always grasp a metal part of the computer chassis with your bare hand before you touch anything inside. Do this even if you are wearing an anti-static wristband. Always handle electronic components by a non-conducting (non-metallic) edge. Don't touch the pins or other connectors. Always use a UL-approved surge protector or an Uninterruptible Power Supply that incorporates surge and spike protection. Never use an anti-static wrist strap when working on a computer (except when working on monitors) Everyone is allowed to eat, drink, or smoke while working on a computer. Never plug an ATX power supply into AC power unless it is connected either to a computer's motherboard or to a dummy test load. Static electricity is the discharge of electricity between two objects with different electrical potential. Apron is a garment worn over the front of the body as a protection for one’s cloth. PPE can also be used to protect the working environment from pesticide application, pollution or infection from the worker.
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Directions: The class will be divided into five (5) groups. Each group has its own respective leader. The group will perform a task regarding familiarizing the personal protective equipment. After the activity they will be graded using the given Performance Score Card below: PERFORMANCE SCORE CARD
Performance Criteria
Percentage
1. The student clearly identified personal protective equipment.
20%
2. The student utilized actual tools/device in performing the actual procedures.
15%
3. The student applied safety precautions during the task.
25%
4. The task gave students more critical thinking on the personal protective equipment.
30%
5. The student cooperatively performed the task.
10%
Grade
Performance Rating
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SYSTEM’S SPECIFICATION Whenever you purchase software or hardware for your computer, you should first make sure your computer supports the system requirements. These are the necessary specifications your computer must have in order to use the software or hardware. For example, a computer game may require your computer to have Windows XP or later, a 2.0 GHz processor, 512 MB of RAM, a 64 MB graphics card, and 500 MB or hard drive space. If your computer does not meet all of these requirements, the game will not run very well or might not run at all. It is just as important to check system requirements for hardware devices. For example, if you buy a printer, it may require either Windows XP or Mac OS X 10.3 or later. It may also require a USB port and 80 MB of available hard drive space. If your computer does not have any USB ports, you will not be able to physically connect the printer. If your machine does not have Windows XP or Mac OS X 10.3 or later, the printer drivers may be incompatible with your operating system. This means your computer will be unable to recognize the printer. Most hardware and software products have the system requirements printed on the side or bottom of the product packaging. When you are shopping for computer software or hardware, it is a good idea to first find out exactly what your system's specifications are and write them down on a piece of paper. The important information to record includes: 1. Operating System (i.e. Windows XP, SP 2 or Mac OS X 10.3.8) 2. Processor Speed (i.e. Pentium 4, 3.2 GHz or Power PC G5, 2.0 GHz) 3. Memory, a.k.a. RAM (i.e. 512 MB) 4. Graphics Card (i.e. ATI Radeon 9800 w/ 256 MB video memory) 5. Hard Disk Space (i.e. 80 GB available) 6. I/O Ports (i.e. USB, Firewire, Serial, Parallel, SCSI, VGA, DVI ports) By recording these specifications from your computer, you will be able to make sure your computer supports the products you are buying. In terms of installation, systems’ specification is a big consideration in order for a computer to run and work properly for the most efficient way it could be. In broad terms, the performance of a computer depends on four factors: the speed and architecture of its processor or "central processing unit" (CPU), how much random access memory (RAM) it has, its graphics system, and its internal hard drive speed and capacity. Also of importance to most users will be the specification of its Internet connection. Most computer users and in particular those working with a lot of photographs, music files or videos should also think about the most suitable storage devices they will need in order to keep and back-up all of their valuable data. 69
Processor speed and architecture The speed of a computer's processor chip (technically known as its "clock speed") in measured in gigahertz (GHz), with the fastest modern processors currently running at up to 4.7GHz. However, for most computing tasks, including web browsing, sending e-mails, word processing and spreadsheet work any processor running at 1GHz or more remains perfectly sufficient. For applications such as video editing, 3D graphics work and (for the majority of "power users") playing computer games, higher processor speeds is highly required. CPU performance is now determined by far more than raw speed alone. Intel made this very clear when it introduced its system of processor numbers. These provide an indication of a processor's "architecture", "cache" and "front side bus (FSB) speed" in addition to its clock speed. The architecture of a processor is the most important factor to determine its performance, and refers to its basic design and complexity. Some processors are simply more sophisticated than others, with Intel (for example) producing "basic" processors called Celerons and Pentiums, as well as more powerful processors under its "Core" processor family. The later include the Core 2, Core i3, Core i5 and Core i7, with the last of these being the most powerful. In addition to clock speed and architecture, a processor's cache and front side bus (FSB) speed also determine a computer's overall power. Cache is a form of very fast memory integrated into the processor chip, and used to store up instructions (work for the processor) so that it has to slow down as little as possible between tasks. Cache is measured in megabytes (MB), with (for example) low-end Celeron processors having as little as 0.25MB of cache (256KB), and high-end Itaniums having up to 24MB. The simple message is, the more cache the better- though high levels of cache still come at a very significant price. Front side bus (FSB) speed is a measure of how fast a microprocessor communicates with the computer's main circuit board (or "motherboard") into which it is physically connected. Again, the higher the measure the better for overall performance, with FSB speeds currently ranging from 533MHz (still perfectly sufficient for the vast majority of applications) up to 1600 MHz. RAM To a large extent, the more RAM a computer has the faster and more effectively it will operate. Computers with little RAM have to keep moving data to and from their hard disks in order to keep running. This tends to make them not just slow in general, but more annoyingly intermittently sluggish.
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RAM is measured in megabytes (MB) and gigabytes (GB), as detailed on the storage page. Just how much RAM a computer needs depends on the software it is required to run effectively. A computer running Windows XP will usually function quite happily with 1GB of RAM, whereas twice this amount (ie 2GB) is the realistic minimum for computers running Windows 7. Graphics system A computer's graphics system determines how well it can work with visual output. Graphics systems can either be integrated into a computer's motherboard, or plugged into the motherboard as a separate "video card". Graphics systems integrated into the motherboard (also known as "onboard graphics") are now quite powerful, and sufficient for handling the requirements of most software applications aside from games playing, 3D modeling, and some forms of video editing. Any form of modern computer graphics system can now display highresolution color images on a standard-sized display screen (ie any monitor up to about 19" in size). The more sophisticated graphics cards now determines how well a computer can handle the playback of high definition video, as well as the speed and quality at which 3D scenes can be rendered. Another key feature of separate graphics cards is that most of them now allow more than one display screen to be connected to a computer. Others also permit the recording of video. As a basic rule, unless a computer is going to be used to handle 3D graphics or to undertake a significant volume of video editing or recording, today there is little point in opting for anything other than onboard graphics (not least because separate graphics cards consume quite a lot of electricity and create quite a lot of heat and noise). Adding a new graphics card to a computer with onboard graphics is also a very easy upgrade if required in the future. Hard Drive Speed and Capacity Today 40GB is an absolute minimum hard drive size for a new computer running Windows 7, with a far larger capacity being recommended in any situation where more than office software is going to be installed. Where a computer will frequently be used to edit video, a second internal hard disk dedicated only to video storage is highly recommended for stable operation. Indeed, for professional video editing using a program like Premiere Pro CS5, Adobe now recommend that a PC has at least three internal hard disks (one for the operating system and programs, one for video project files, and one for video media). Two key factors determine the speed of traditional, spinning hard disks. The first is the rotational velocity of the physical disk itself. This can currently be 4200, 5400, 7200, 10000 or 15000 rpm (revolutions per minute). The faster the disk spins, 71
the quicker data can be read from or written to it, hence the faster the disk the better (although faster disks consumer more power, make more noise, and generate more heat). Most desktop hard disks run at either 5400 or 7200 rpm, whilst most laptop hard disks run at 4200 or 5400. The second key factor that determines performance of a traditional, internal hard disk is the interface used to connect it to the computer's motherboard. Three types of interface exist: Serial Advance Technology Attachment (SATA), which is the most modern and now pretty much the norm on new PCs; Integrated Device Electronics (IDE) (also known as UDMA), which is a slower and older form of interface, and finally SCSI, which happens to be the oldest but in it most modern variant is still the fastest disk interface standard.
Now, in order for you to better understand the topics under system’s specification, dig deep into your mind and answer the following essential questions: 1. In your point of view, describe system specification? 2. How does it affect the performance of the computer? 3. What is the relevance of understanding system specification in computer hardware servicing? 4. Why do you think that system specification is one of the most important considerations during installation?
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INSTALLATION OF HARDWARE COMPONENTS AND OTHER PERIPHERALS One of the basic skills that you must acquire in computer hardware servicing is to independently assemble and disassemble a personal computer or simply setting up a PC. After familiarizing with all the tools, devices, peripherals and safety precautions I believe that you are now ready to gain another experience in CHS by going through this lesson. Personal Computer Disassembly Before starting computer disassembly, make sure you have the tools you need and they're all close by and handy and be sure to have a container to keep the screws in so you have them when you want to put things back together. Step1. Unplugging - The first thing you do is to unplug every cable that is plugged in to your computer. That includes the cables such as Power, USB, Mouse, Keyboard, Internet, Ethernet, Modem, AM\FM Antenna, Cable TV, etc. Just unplug all the cables for safety purposes. Now that your computer is fully unplugged, move your PC to a clean work space. Step2.Opening the Outer Shell/Case- First, unscrew the four screws at the back of the computer. On most computer cases, there will be large knobs that you can unscrew by hand or by screw driver on the back-right side of the computer. The left side has small screws because on that side you can't access much on the inside.
Figure 32. Screw at the back of computer chasis Once the screws are removed, you can remove the side panels. On most computers, they just slide off. Start with the left side panel (the side that once had the knobs), slide it towards the back of the computer. Now you can remove the left panel. Just like the other side, slide it towards the back of the computer. 73
Side Panel
Figure 33. Removing the side panel NOTICE: If you are working on a carpet, about every five minutes touch something that is grounded (Sink faucet / pipe, wire coming from the ground part of a wall outlet). This is done so you do not shock your motherboard or other parts. Step3. Removing the System Fan - First, unplug the fan from the motherboard. You can find the plug by following the wire from the fan. It should be labeled "SYS_FAN1". Next, you will have to unscrew the fan from the outside. You should now be able to lift the fan out of the PC.
System Fan
Figure 34. Removing the system fan Step4. Removing the CPU Fan- The CPU fan is located right on top of the CPU heat sink, which is a large piece of metal with fins on the top. The CPU fan plugs into the motherboard in an awkward place, that is hard to access. But just follow the wires and you should easily find it. It is labeled "CPU FAN1". To remove the fan from the heat sink, remove the four screws securing it in place.
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CPU Fan
Figure 35. Removing the CPU fan Step5. Power Supply - The first thing to do is unplug every wire coming from the power supply. You must disconnect the motherboard (very large connector/plug), CD/DVD drive(s) power, internal hard drive power and portable hard drive slot power. Once everything is unplugged, unscrew the four screws holding the power supply in place, on the back of the computer. Next, push the power supply from the outside, and then lift it out.
Figure36. Unscrew the power supply Step6. CD/ DVD Drive(s)-First, unplug the ribbon from the back of the drive. Once that is completed, pull on the tab securing the drive in place, then push it out from the inside.
CD / DVD Drive
Figure 37. Location of CD / DVD Drive
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Step7. Hard Drive - First, unplug the connector at the back of the slot, and unplug the other end from the motherboard. Also unplug the SATA cable from the motherboard and the hard drive. The portable hard drive slot is secured the same way the CD/DVD drive is, with a tab. Pull on the tab, then slide the slot out.
Figure 38. Unplugging the Hard Drive connector To remove the hard drive from the side of the slot, unscrew the four screws securing it in place. You must be very careful not to drop the hard drive, since it is very delicate!
Figure 39. Removing the hard drive from the side of the slot Step8. Memory (RAM) - To remove the RAM, push down on both tabs holding the RAM in place, which are located at both ends of the RAM.
Figure 40. Removing the Memory
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Step9. Motherboard - The motherboard has seven screws holding it to the frame, which are indicated by large white circles around them. Remove them and then lift the motherboard out of the frame.
Figure 41. Removing the Motherboard Personal Computer Assembly Now that you have the skills in disassembling a personal computer, Ibelieve that you are ready to take another step of this module which is assembling a personal computer. All you need to do is to follow the step by step procedures provided in this module. Step 1. Prepare your workplace 1. Take Inventory: Before you start, take an inventory of your parts. Do not begin assembling your computer if you don't have everything you need. Begin the step-by-step process once you are ready with everything you need.
Figure 42. Take inventory of the Different Computer Parts 2. Make Space, Make Time: 77
Building a PC takes up space - about a dining room table worth. So make sure you have plenty of working room and a few hours to proceed with minimal interruption. Work on a flat, stable table top surface, or bare floor, where you have room to layout all of the items. 3. Prepare Grounding Protection: Use an inexpensive antistatic wrist strap. Make sure you are wearing your antistatic wrist strap correctly (it does you no good at all if you do not wear it!), and you are ready to proceed. Look at Figure 43 for details.
Figure 43. Wearing the Anti- static Wrist Strap Correctly 4. Have the Drivers Ready: Assuming you have another internet connected PC, download the latest drivers from the vendors' websites for each component you will be installing. Sometimes drivers are updated between the time the component was manufactured and the time you are installing it. It is always best to have the latest. Copy them to a CD for easy access. Step 2. Prepare the Motherboard 1. Great care should be taken when installing the motherboard. First, take the board out of its packaging and put it on top of the antistatic bag it came in (see Figure 45). Remember, you always want to safeguard your components from potentially hazardous static electricity (wear your strap).
Figure 44. Motherboard in an Antistatic Bag 2. Before you secure the motherboard onto the PC case/chassis, inspect it carefully for any visible defects. 78
3. Next, review the motherboard manual, to make sure you are familiar with the motherboard layout and understand which socket is which. Manuals are extremely helpful, usually easy to read, and include illustrations. Below you can find instructions on how to install the processor, the heat sink and the memory modules on the motherboard. You should not place the motherboard in the computer case until you are told to do so. Step 3. Install the CPU 1. Use the unlocking mechanism to open the CPU socket which is usually a lever. 2. Carefully line up the pins and place the chip in its socket; it will fit only when oriented the proper way. An arrow or a missing pin on one corner of the chip will show you how to line things up. 3. Align Triangular CPU and socket key marks as shown in Figure 46. 4. Lower the lever to lock the CPU into place. Figure 45. Install CPU Step 4. Install the CPU Heat Sink 1. Follow the manufacturer's directions to install the heat sink and the fan that will cool the processor. If you bought an OEM CPU and a separate heat sink, you may need to spread a thin layer of the thermal grease that came with the heat sink over the chip to ensure proper transfer of heat (some heat sinks come with this grease already applied).
Figure 46. Install CPU Heat Sink
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3. Attach the clip that holds the heat sink in place keeping in mind that it may require a fair amount of force. Again, follow the instructions that came with the heat sink. They will show you how to fit it correctly. If you are in doubt, you can visit the manufacturer's website for more information. 4. Plug the CPU fan's power connector into the proper connector on the motherboard. Step 5. Install Memory (RAM Modules) In order to install the memory modules, insert them into the proper sockets (Figure 48) and push down firmly but evenly until the clips on both sides of the socket pop into place. If your motherboard supports dualchannel memory, consult the user manual to determine which pairs of RAM sockets you should use. The motherboard and the CPU are the brain and nerve center of your PC, so selecting these components is the most important decision you'll make. Figure 47. Install RAM Memory Step 6. Place the motherboard into the case 1. Some PC cases have a removable motherboard tray. If yours does, remove the screws holding it in place and pull it out of the case (Figure 49).
Figure 48. Remove Motherboard Tray 2. Note the pattern of the holes in your motherboard (Figure 50), and screw brass standoffs into the motherboard tray or into the PC case in the correct locations (ALWAYS check the manual and follow their instructions to the letter).
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Figure 49. Screw Brass Standoffs Into the Motherboard 3. Check the layout of the sockets on the motherboard, and confirm that the ports on your motherboard's back panel match the holes on the case's Input/Output (I/O) shield that is installed in your case. If necessary, remove the old I/O shield by tapping it firmly a few times with the butt-end of a screwdriver, and then replace it with the shield that came with the new motherboard. 4. Carefully position the motherboard on top of the brass standoffs (Figure 51), line up all the holes, and use the screws that accompanied the case to fasten down the motherboard. If you are using a removable tray in your system, slide the tray and motherboard back into the case and then secure the tray.
Figure 50. Case’s I /O Shield
Figure 51. Mount the Motherboard
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Step 7. Connect the Power Supply Making the proper connections is crucial to successfully assembling your PC system. Fortunately, manufacturers provide color-coded power cables and unique connector shapes to make the job easy. 1. First, plug the large ATX power connector (Figure 53) from your power supply into the matching port on your motherboard. Look Figure X for details. 2. Locate the smaller, square processor power connector (Figure 54) (you cannot miss it - it is the one sprouting the yellow and black wires) and attach it to the motherboard. Note: your connector is usually located near the processor. As always, refer to your motherboard's manual for the exact locations. 3. Use your motherboard user manual and find the description about front-panel connectors.
Figure 53. Large ATX Connector
Figure 52. Connect the ATX Power in the Motherboard
Figure 53. Square Processor Power Connector
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NOTE: You are going to be doing work that requires attention to detail and can be quite frustrating if you do not go into it with the right attitude. 4. Attach each of the tiny leads from the power and reset switches (Figure 56), the hard-disk activity lights, the PC speaker, and any front-panel USB and FireWire ports to the corresponding pin on your motherboard. The needle-nose pliers are useful for manipulating small pieces.
Figure 54. Connect the different Leads Step 8. Install Graphics / Video Cards 1. Begin by removing the backplane cover from the AGP or PCI Express X16 slot (the metal piece where the monitor connector will emerge) (Figure 55).
Figure 55. Remove the backplane cover 2. Install the graphics board in that slot, and then secure the card with a screw (Figure 56).
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Figure 56. Install the Graphics Board Step 9. Install Internal Drives Now it is time to install your drives. This is an easy process, but it requires attention to detail. 1. Make any necessary changes to jumpers on the drives before mounting them in the case. A two-drive system (one or two SATA (Serial ATA- is a standard hardware interface for connecting hard drives and CD/DVD drives to a computer) hard drives, plus one parallel ATA (Advanced Technology Attachment) optical drive, for example) is easy to set up; the SATA drives are jumper less, and the optical drive can be set as master on its own parallel ATA channel. Many cases have removable drive rails or cages to house drives. 2. Use the included screws to attach your drives to the rails or cage, and slide them into the case. For externally accessible drives such as a DVD recorder, you can save time by installing one drive rail and sliding the drive in for a test fitting to make sure that its front is flush with the case (Figure 57). 3. When the drives are installed, connect power and data cables to each one. Parallel ATA drives use wide, flat data cables that can be installed only in the correct way. Floppy drives use a similar but smaller cable; SATA drives use a thin, 1cm-wide data cable. SATA drives use a new type of power connector that many power supplies don't come with. Fortunately, many motherboards ship with adapters for converting a standard four-pin power connector to a SATA power connector (Figure 57).
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Figure 57. Attach your devices
Figure 58. Connect Power Connector Step 10. Install the Add- in Cards 1. For each add-in card, you must choose a free PCI slot. 1. Remove its backplane cover to allow access from the rear of the case. 3. Carefully position the card above the slot, and press down firmly to seat the card (Figure 59). 4. Secure the card with a screw.
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Figure 59. Add- in Cards Many motherboards have additional sound connectors or ports housed on small add-in boards. Some of these plug into slots on the motherboard; others screw into the back of the case in place of slot covers. Usually the additional ports are not essential to your PC's operation. For example, if you install a sound card, you do not need connectors to the motherboard's built-in sound chip. Check your motherboard manual to determine what each of these boards does. Connecting Peripherals of a Personal Computer When attaching hardware and peripherals of the computer, ensure that they are connected to the correct locations or ports. For example, some mouse and keyboard cables use the same type of PS/2 connector. So, you must know first the different ports that can be found in the back panel of the computer. Keep in mind: 1. When attaching cables, never force a connection. 2. Plug in the power cable after you have connected all other cables. Steps in Connecting Peripherals of a PC Step 1.Attach the monitor cable to the video port. Step 2.Secure the cable by tightening the screws on the connector. Step 3.Plug the keyboard cable into the PS/2 keyboard port. Step 4.Plug the mouse cable into the PS/2 mouse port. Step 5.Plug the USB cable into a USB port. Step 6.Plug the network cable into the network port. Step 7.Plug the power cable into the power supply.
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Figure 60. Steps in Connecting Peripherals of a PC After connecting all the cables into their proper places, the picture in the next page should be the appearance of the back panel of your PC.
Figure 61. Appearance of the PC’s Back Panel
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Rearrange the Procedures Direction: Rearrange the following procedures in their proper order. Use numbers to indicate their order of precedence. The first number is done for you. A. Personal Computer Disassembly __7_1. Detaching the Hard Drive ____2. Detaching the power supply ____3. Opening the outer shell / case ____4. Pull Out the Motherboard ____5. Removing the CD / DVD Drives ____6. Removing the CPU fan ____7. Removing the system fan ____8. Unplugging all the cables and wires
B. Personal Computer Assembly __7_1. Connect the Power Supply ____2. Install Graphics / Video Cards ____3. Install Internal Drives ____4. Install Memory (RAM Modules) ____5. Install the Add- in Cards ____6. Install the CPU ____7. Install the CPU Heat Sink ____8. Place the motherboard into the case ____9. Prepare the Motherboard ____10. Prepare your workplace
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Performance Test Direction: Follow and perform the given procedures on Activity A, B and C. Safety
precautions must be observed when working. You will be rated in accordance with the rubrics provided after the activity: A. PC Disassembly
Unplug all the cables and wires
Remove CD/ DVD Drives
Remove Memory Module
Open the outer shell / case
Remove the power supply
Remove the Motherboard
Remove the system fan
Remove the CPU Fan
B. Personal Computer Assembly Prepare your workplace
Prepare the Motherboard
Install the CPU
Install the CPU Heat Sink
Install Graphics / Video Cards
Connect the Power Supply
Place the motherboard into the case
Install Memory (RAM Modules)
Install Internal Drives
Install the Add- in Cards
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C. Connecting PC Peripherals
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•Attach the monitor cable to the video port.
•Secure the cable by tightening the screws on the connector
•Plug the keyboard cable into the PS/2 keyboard port
•Plug the mouse cable into the PS/2 mouse port.
•Plug the USB cable into a USB port.
•Plug the network cable into the network port.
•Plug the power cable into the power supply.
Rubrics for your performance Test Criteria
Percentage
Accuracy
50 %
Adherence to the procedures
20%
Workmanship(applied safety precautions)
20%
Speed
10%
Grade
Performance Rating
90
INSTALLING OPERATINFG SYSTEM Before the installation process undertake, a technician must be aware of the minimum requirements of a computer hardware that is compatible with the operating system to be installed. Following the systems’ requirements means an efficient computer system. The list below shows the windows XP minimum requirements for installation: Pentium 233 Mhz or compatible processor or faster; 300MHZ or faster recommended 64MB of RAM minimum; 128MB or more recommended 4.3GB hard hard disk space or more CD-ROM or DVD-ROM Super VGA (800X600) or higher-resolution monitor Keyboard and mouse Windows XP Installation 1.
Insert the Windows XP CD-ROM and reboot the computer
If you see a message about press any key to boot the CD, do so now. Otherwise, you will see a message about Setup inspecting your system.
Figure 62. Boot from CD 91
2.
MS-DOS portion of Setup begins
In the first stage of setup; you will see a series of blue and gray MS-DOSbased screens. In the first step, you will be asked to press F6 if you need to install any thirdparty or RAID drivers.
Figure 63. Windows Set-up 3. Welcome to Setup
Finally, Setup begins. In this step, you can set up XP, launch the Recovery Console (another, more complicated system recovery tool), or quit. Press ENTER to continue Setup, and it will examine your hard drives and removable disks.
Figure 64. Welcome to Set-up 92
4. Read the license agreement
Next, you'll have to agree to Microsoft's complex licensing agreement. Among the highlights: You don't actually own Windows XP and you can only install it on one PC. Hit F8 to continue.
Figure 65. License and Agreement 5. Choose an installation partition
This crucial step lets you choose where to install XP. On a clean install, you will typically install to the C: drive, but you might have other ideas, especially if you plan to dual-boot with 9x. Setup will show you all of your available disks (in this case, just one) and let you create and delete partitions as needed. So, for example, if you have one disk, but would like to create two partitions, one for XP and one for your data, you can do that here.
Figure 66. Choose an Installation Partition 93
6. Select the file system
If you created a new partition, or wish to change the file system of an existing partition, you can do so in the next step. NTFS (New Technology File System) file system is more secured than FAT (File Allocation System). Regardless of which file system you choose, be sure to select one of the "quick" format options (the top two choices), if you do need to format, since these will work much more quickly than a full format.
Figure 67. Select the File System 7. Optionally format the partition
If you did choose to change or format the file system, this will occur next. First, you'll be asked to verify the format. If you're installing XP on a system with more than one partition, especially one that still holds your data on one of the partitions, be sure you're formatting the correct partition. Hit F to continue, and a yellow progress bar will indicate the status of the format. When this is complete, Setup will again examine your disks, and create a list of files to copy.
Figure 68. Optionally Format the Partition 94
8. Setup folder copy phase and reboot Setup will now copy system files to the system/boot partition(s) you just created. This will allow the PC to boot from the C: drive and continue Setup in GUI mode. When the file copy is complete, Setup will initialize and save your XP configuration. It will then reboot your PC.When the system reboots, you will probably see the "Press any key to boot from CD" message again. If this happens, do not press a key: Setup will now boot from your C: drive. In the event that you cannot prevent the CD-based Setup from reloading, eject the CD and reboot. Setup will ask for the CD when needed.
Figure 69. Setup Folder Copy Phase 9. GUI Setup begins
Once the system reboots, you will be presented with the GUI Setup phase, which is much more attractive than the DOS-mode phase. As you progress through GUI Setup, you can read promotional information on the right side of the screen about XP. Next, your hardware devices are detected. This could take several minutes.
Figure 70. GUI Setup
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10. Regional and language Options
In the first interactive portion of GUI Setup, you can choose to customize the regional and language settings that will be used by XP, as well as the text input language you'd like. Users in the United States will not normally need to change anything here. Click Next to continue.
Figure 71. Regional and Language Options 11. Personalize your software
Now, enter your name and your company. The name you enter is not the same as your user name, incidentally, so you should enter your real name here (i.e. Rosalie Lujero or whatever). Click Next to continue.
Figure 72. Software Personalization 96
12. Enter your product key
Now you must enter the 25-character product key that is located on the orange sticker found on the back of the CD holder that came with Windows XP. You cannot install XP without a valid product key. Later on, you will be asked to activate and optionally register your copy of Windows XP. A product key can be used to install XP on only one PC. Click Next to continue.
Figure 73. Enter Product Key 13. Enter a computer name and administrator password
In the next phase of Setup, you can create a name for your computer (which is used to identify it on a network) and, optionally in Pro Edition only, a password for the system Administrator, the person who controls the PC (this will generally be you, of course).
Figure 74. Enter Computer Name and Administrator Password 97
14. Supply your date and time settings
Next, you can supply the date and time, which are auto-set based on information in your BIOS, and the time zone, which is irritatingly set to PST, which is where Microsoft is. Change these as appropriate. Click Next to continue.
Figure 75. Enter Date and Time Settings 15. Network setup
If you have a networking card or modem, Setup now install the networking components, which include the client for Microsoft networks, File and Print Sharing, the Quality of Service (QoS) Packet Scheduler, and the TCP/IP networking protocol by default.
Figure 76. Network Set-Up 98
16a. Choose networking settings
In this phase, you can choose to keep the default settings (recommended) or enter custom settings. Note that XP doesn't include the legacy NetBEUI protocol out of the box. If you want to use this protocol, you will need to install it later from the XP CD-ROM. Click Next to continue.
Figure 77. Choose Networking Settings Windows XP Professional only: 16b. Enter workgroup or domain information
In Windows XP Professional only, you will be able to select a workgroup or domain name next. Home Edition doesn't work with Windows domains, however, and Setup will automatically supply the workgroup name MSHOME, which you can change later. The default workgroup name in XP Pro is, imaginatively, WORKGROUP. Click Next to continue.
Figure 78. Enter Workgroup or Domain Information 99
17. Set-up completion
From this point on, Setup will continue to completion without any further need for interaction. Setup will now copy files, complete installation, install your Start Menu items, register system components, save settings, remove any temporary files needed by Setup, and then reboot. Again, you will probably see the "Press any key to boot from CD" message on reboot. If this happens, do not press a key, and your new XP install will boot up. You can remove the XP Setup CD now.
Figure 79. Set- Up Completion 18. First boot
You’ll be greeted by the XP splash screen on first boot (this actually appears briefly when you rebooted into GUI Setup as well).The splash screens for XP Pro and Home are subtly different.
Figure 80. First Boot
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19. Change display settings
Users with CRT monitors and some LCDs (such as laptops and flat panel displays) will see a Display Settings dialog appear, which asks whether you'd like XP to automatically set the resolution. This will generally change the resolution from 800 x 600 to 1024 x 768 on a CRT monitor, or to the native resolution of an LCD display. Click OK and let XP change the resolution. Then, accept the settings if the screen display changes and can be read. If you can't see the display, it will time out after 30 seconds and return to the sub-optimal 800 x 600 resolution. Click OK to accept the screen resolution change.
Figure 81. Change Display Settings 20. Welcome to Microsoft Windows
Now, you are presented with XP's "Out of Box Experience," or OOBE, which presents a silly wizard to guide you through the final set up of your PC. Click Next to continue.
Figure 82. Welcome to Microsoft Windows
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21. Network setup
In the opening OOBE phase, you are asked to set up your network/Internet connection, which is required for activation and registration. If you selected the default networking configuration during Setup and know it will work (because you're connected directly to a cable modem, perhaps, or are on a local area network), then select Yes (the default). Otherwise, you can select No and then Skip. We'll assume that your network is up and running and select Yes. Click Next to continue.
Figure 83. Network Set- up 22. Optionally activate and register Windows If you selected Yes in the previous step, you are asked if you'd like to activate Windows XP. This will tie your copy of XP to the current PC semipermanently. Activation requires a connection to the Internet, but you can perform this step later if you want (and don't worry, XP will annoyingly remind you of this fact every time you boot the machine until you do so).
Figure 84. Windows Activation 102
23. Set up users
Now, you can set up the user names of the people who will be using the PC. You will want at least one user (for you), since you shouldn't be logging on as Administrator. Curiously, each user you do create here has administrative privileges, however, and no password. You should set up your users correctly with passwords as soon as possible. This phase lets you create up to five users. You can create more later, or manage users, using the User Accounts tool in Control Panel. Click Finish when done creating users. At this point, OOBE ends and you're reading to go. Click Finish again.
Figure 85. Set-up Users 24. Logon to Windows XP for the first time Click your name, that account will logon and you'll be presented with the XP desktop. After you create passwords, however, you'll be asked to enter a password before you can logon.
Figure 86. Set-up Users
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Multiple Choice: Read each question carefully and choose the letter of the best answer. Write your answer on a separate sheet of paper. 1. Which of the following is not a Windows XP minimum requirement? a. 128MB RAM or higher c. Lower resolution monitor b. CD- ROM or DVD ROM d. 4.3 GB hard disk space or more
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2
3 4 5 6 7 8 9 10
11
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2. If you see a message to press any key to boot the CD and you fail to do so, what do you think will happen? a. The computer will restart b. Set up inspecting your system will appear c. It will be prompted to BIOS setup d. It will return to boot menu 3. What key should you press if you need to install any third- party or RAID drivers? a. F2 c. F2 b. F6 d. F12 4. After reading the license agreement, what function key will press in order to start the installation? a. F6 c. F9 b. F8 d. F12 5. Where do we typically install the operating system? a. Drive C c. External Drive b. DVD d. Floppy Drive 6. What file system is usually used during installation? a. FAT c. NTFS b. FAT32 d. NTFS32 7. Suppose that you will install Windows XP on a system with more than one partition, what important process should be done? a. Change the file system b. Delete the data and files on the different partition c. Examine the partition d. Format the correct partition 8. When the folder copy phase is complete your system will reboot, what are you going to do if see the message “Press any key to boot from CD”? a. Press any key c. Reboot the system b. Do not press a key d. Eject the CD 9. What is the next phase after the set up folder copy phase and reboot? a. GUI set up c. Username setup b. Software d. Software personalization 10. What phase will immediately follow after the first boot phase? a. Welcome to Windows c. Change display setting b. Network Setup d. Set up users
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For you to have a profound knowledge on the overview of what windows XP is, utilize the internet and watch the following video presentations: 1. Overview of Windows XP http://www.professormesser.com/free-a-plus-training/220-802/anoverview-of-windows-xp/
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2. Planning for installation http://www.professormesser.com/free-a-plus-training/220802/planning-a-windows-installation-2/
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3. Windows XP installation http://www.professormesser.com/free-a-plus-training/220802/installing-windows-xp-3/ After watching the videos, have a documentation containing the overview of Windows Xp and salient procedures in Planning for installation and Windows XP installation. Use a short white bond paper and be creative for the documentation.
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Windows XP Installation
43
Equipment:
44
Computer unit with CD or DVD drive
45
AVR / UPS
46
Materials: Windows XP Installer
47 48
Procedure:
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1. 2. 3.
Work in triads or quartet (depending on the no. of computer available) Install the Operating System (OS), Windows XP. Take turns in doing the above task. You will be assessed using the criteria in the score card below. PERFORMANCE SCORE CARD
54
Evaluation:
Percentage
Score
CRITERIA 1. Operating System is installed with no errors.
40%
2. Proper disk partitioning and partition is performed. 3. Proper use of equipment and materials is observed. 4. Observance of Safety Precautions.
40% 10% 10%
Performance Criteria 55 56 57 58 59 60 61 62 63 106
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Windows 7 Installation
As a technician you must be able to know the variations or options in installing an operating system that is compatible with the hardware requirement of a personal computer. Another operating system available in the market now is the Windows 7 version. Now, take a tour through the procedures in installing a Windows 7 operating system. I believe, the procedures will be very easy for you. 1. Turn your computer on then press Del or F2 (depend on your computer’s mainboard) to enter the system BIOS. 2. Go to Boot menu and choose Boot from CD/DVD.
Figure 87. Boot Menu
3. Press F10 to save the configuration and exit BIOS then reset your computer.
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Figure 88. Save configuration settings 107
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4. Insert Windows 7 DVD into your DVD drive then start up your computer, Windows 7 will be loading files.
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Figure 89. Windows 7 loading files and Start up
5. Select your language, time & currency format, keyboard or input method and click Next.
Figure 90. Language, Time and Currency Set- up 6. Click Install now.
Figure 91. Install Now 108
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7. Check I accept the license terms and click Next.
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Figure 92. License Terms Agreement 8. Click Upgrade if
you
already
have
a
previous
Windows
version
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or Custom (advanced) if you don’t have a previous Windows version or want
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to install a fresh copy of Windows 7.
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Figure 93. Windows 7 Options for Installation
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9. (Skip this step if you chose Upgrade and have only one partition) Select
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the drive where you want to install Windows 7 and click Next. If you want to
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make any partitions, click Drive options (advanced), make the partitions and
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then click Next.
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Figure 94. Drive Options 10. It will now start installing Windows 7. The first step, (i.e. Copying Windows files) was already done when you booted the Windows 7 DVD so it will complete instantly.
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Figure 95. Windows 7 Starts Installation
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11. After completing the first step, it will expand (decompress) the files that it has been copied.
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Figure 96. Expanding Windows Files 12. The third and fourth step will also complete instantly like the first step.
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Figure 97. Installing Features and Updates
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13. After that it will automatically restart after 15 seconds and continue the setup. You can also click Restart now to restart without any delays.
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Figure 98. Restart to Continue Installation 14. After restarting for the first time, it will continue the setup. This is the last step so it will take the most time than the previous steps.
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Figure 99.Completing Installation
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15. It will now automatically restart again and continue the setup. You can click Restart now to restart without any delays.
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Figure 100.First Start Up
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16. Type your desired user name in the text-box and click Next. It will automatically fill up the computer name.
Figure 101.Software Personalization
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17. If you want to set a password, type it in the text-boxes and click Next.
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Figure 102.Password Set- up
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18. Type your product key in the text-box and click Next. You can also skip this
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step and simply click Next if you want to type the product key later. Windows
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will run only for 30 days if you do that.
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Figure 103.Type Windows Product Key
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19. Select your desired option for Windows Updates
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Figure 104. Windows Update
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20. Select your time and click Next.
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Figure 105. Time and Date Settings
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21. If you are connected to any network, it will ask you to set the network’s location.
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Figure 106. Windows 7 Set- up Complete
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Figure 107. Preparing Desktop 116
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Hands- on Activity:
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You are tasked to reformat / install an operating system particularly Windows
279
7, however, during the process of installation a problem occurred the machine /
280
computer did not boot from CD. What do you think might be the reason for this
281
unplanned incident? Your task now is to demonstrate the correct procedures to solve
282
and respond to this unplanned event in accordance to the established procedures.
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You will work in quartet or triads (depending on the number of computers) to solve this problem. Your output will be rated according to the following criteria: SKILLS SCORE CARD
285
CRITERIA Accuracy
PERCENTAGE
SCORE
50 %
(Adherence to the correct procedure) Workmanship
30 %
(Adherence to OHS policy, neatness and organization of materials used) Speed
20 % PERFORMANCE RATING
100%
286
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Before implementing any contingency procedures in any unplanned events
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you must have a deeper understanding in obtaining approval from appropriate
290
personnel. Your task now is to do the following:
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1. Watch video presentation on the said topic and have a proper documentation of the procedures in obtaining approval from the appropriate personnel. 2. Interview a person in the field to acquire the knowledge (procedures) and skills on the said competency.
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117
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Windows 7 Installation
301
Equipment:
302
Computer unit with CD or DVD drive
303
AVR / UPS
304
Materials: Windows 7 Installer
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Procedure:
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1. 2. 3.
312
Work in triads or quartet (depending on the no. of computer available) Install the Operating System (OS), Windows 7. Take turns in doing the above task. You will be assessed using the criteria in the score card below. PERFORMANCE SCORE CARD CRITERIA
Percentage
1. Operating System is installed with no errors.
40%
2. Proper disk partitioning and partition is performed. 3. Proper use of equipment and materials is observed. 4. Observance of Safety Precautions.
40%
Score
10% 10%
PERFORMANCE RATING 313 314 315 316 317 318 319 320 118
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BASIC COMPUTER CONFIGURATION SETUP
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Basic Input / Output System (BIOS)
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The Basic Input Output System, usually referred to as BIOS, is software stored on a small memory chip on the motherboard.
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BIOS instruct the computer on how to perform a number of basic functions such as booting and keyboard control. BIOS is also used to identify and configure the hardware in a computer such as the hard drive, optical drive, CPU, memory, etc.
Configuration is the way a system is set up, or the assortment of components that make up the system. Configuration can refer to either hardware or software, or the combination of both.
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Figure 108. BIOS Set- up The BIOS is accessed and configured through the BIOS Setup Utility. The BIOS Setup Utility is, for all reasonable purposes, the BIOS itself. All available options in BIOS are configurable via the BIOS Setup Utility. The BIOS Setup Utility is accessed in various ways depending on your computer or motherboard make and model. 119
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BIOS access and configuration on PC systems is independent of any operating systembecause the BIOS is part of the motherboard hardware. It doesn't matter if a computer is running Windows 7, Windows Vista, Windows XP, Linux, Unix, or no operating system at all - BIOS functions outside of the operating system environment and is no way dependent upon it. BIOS contain a number of hardware configuration options that can be changed through the setup utility. Saving these changes and restarting the computer applies the changes to the BIOS and alters the way BIOS instructs the hardware to function. The following list shows the things you can do in most BIOS systems:
Change the Boot Order Load BIOS Setup Defaults Remove a BIOS Password Create a BIOS Password Change the Date and Time Change Floppy Drive Settings Change Hard Drive Settings Change CD/DVD/BD Drive Settings View Amount of Memory Installed Change the Boot Up NumLock Status
Enable or Disable the Computer Logo Enable or Disable the Quick Power On Self Test (POST) Enable or Disable the CPU Internal Cache Enable or Disable the Caching of BIOS Change CPU Settings Change Memory Settings Change System Voltages
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Device Drivers
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Now that you successfully installed the operating system, you’ll need to configure the devices such as Video Cards, Network Interface Cards, Sound Cards, etc by installing the device drivers of each. In many cases, if Windows recognizes the device, drivers will be installed automatically. In some cases, generic drivers are installed so that the devices will work properly.
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Drivers are small software programs that help the operating system use or “drive” the device. Whenever a device doesn’t work properly, ask if the proper driver has been installed.
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The procedures listed below describe how to obtain and install drivers for hardware devices on a Microsoft Windows 2000-based computer.
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Step 1: Determine the Hardware Manufacturer
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If you do not know the manufacturer of the device for which you want to install the driver, follow these steps to determine the manufacturer:
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1. On the desktop, right-click My Computer, and then click Manage.
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Figure 109. Manage My Computer 2. Under System Tools, click Device Manager. The devices that are installed on the computer are listed in the right pane.
Device Manager
Figure 110. Device Manager
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3. In the right pane, expand the category of the device that you want to configure. For example, expand Display adapters. NOTE: The device may be listed under other devices.
Expanded Device Category
Figure 111. Expanded Device Category
4. Right-click the device for which you want to install the driver, and then click Properties. NOTE: The device may appear as Unknown device or as a generic device.
Figure 112. Device Properties
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5. Click the General tab. Make a note of the manufacturer and model of the device.
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Figure 113. General Tab 6. Click Cancel, and then quit Computer Management. NOTE: If the device is not displayed in Device Manager, or the device is listed as an "Unknown device," contact the computer or device manufacturer to obtain more information about the device.
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Step 2: Obtain the Driver
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To obtain the latest driver, use the following list of possible sources for the driver, in the order in which they are presented.
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Original Computer Manufacturer If the device was installed by your computer manufacturer, contact the manufacturer of your computer to find out how to obtain, download, and install the latest drivers for the device.
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Device Manufacturer
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Contact the manufacturer of the device to inquire about how to obtain, download, and install the latest drivers for the device.
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Chipset Manufacturer
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Contact the chipset manufacturer of the device to find out how to obtain, download, and install the latest drivers for the device. It is best to first contact the manufacturer of the device for the drivers before you contact the chipset manufacturer.
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Installation CD or Floppy Disks
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If you have the original driver CD or floppy disks that were included with the computer or device, and if no other source for the drivers is available, use the original driver that is included with the computer or device.
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Step 3: Install the Driver The driver files that you download from the OEM, device manufacturer, or chipset manufacturer differ depending on how the driver is packaged by the manufacturer. If the file is an executable program, run the program to extract the files. If the file is in .zip format, you can use a third-party utility such as WinZip to extract the files. For more information about how to extract the driver files, see the instructions that are provided by the manufacturer of the driver. The driver may use a setup program. The driver package may contain raw driver files, or it may contain only raw driver files. Some examples include .inf files, and .sys files. To install the driver, use one of the following methods as appropriate to your situation.
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For example, if your display adapter uses a NVIDIA chipset, first contact the manufacturer of the display adapter. If you cannot contact the display adapter manufacturer or if the manufacturer does not have a driver, contact NVIDIA. Some examples of chipset manufacturers (and their Web sites) include: NVIDIA (display adapters) PCTEL, Inc. (modems)
NOTE: Whenever possible, try to first contact the Original Equipment Manufacturer (OEM), device manufacturer, or chipset manufacturer to obtain the latest version of the driver.
Driver with a Setup or Installation Program If the driver uses a setup or installation program, run the program to install the driver. For more information about how to do this, see the documentation or contact the driver manufacturer.
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Device Is Displayed in Device Manager 1. On the desktop, right-click My Computer, and then click Manage. 2. Under System Tools, click Device Manager. The devices that are installed on the computer are listed in the right pane. 3. Expand the category of the device that you want to configure. For example, expand Modems. NOTE: The device may be listed under Other devices. 4. Right-click the device for which you want to install the driver, and then click Properties. NOTE: The device may be displayed as Unknown device, or as a generic device. 5. Click the Driver tab, and then click Update Driver. The Upgrade Device Driver wizard starts. 6. Click Next. 7. Do one of the following: o Click Search for a suitable driver for my device (recommended), and then click Next. -oro Click Display a list of the known devices for this device so that I can choose a specific driver, and then clickNext. Click Have Disk, click Browse, locate the .inf files that you downloaded in Step 2: Obtain the Driver, click an .inf file, and then click Open. 8. Follow the wizard instructions to install the driver. 9. Restart the computer. Device Is Not Displayed in Device Manager Use the Add New Hardware wizard in Control Panel to install drivers for nonPlug and Play devices. You may have to use this method to install certain modems, serial ports, or printer ports. 1. Click Start, point to Settings, and then click Control Panel. 2. Double-click Add/Remove Hardware. 3. Click Next. 4. Click Add/Troubleshoot a device, and then click Next. 5. Do one of the following: o Click Yes, search for new hardware, and then click Next. -oro Click No, I want to select the hardware from a list, and then click Next. 6. Follow the wizard instructions to install the driver. 7. Restart the computer.
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Installing Device Drivers
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Material: Installation CD Direction: Given an installation CD, perform installation of a device driver. Check the quality of your work undertaken in accordance with the established procedures thru the Performance Score Card below. PERFORMANCE SCORE CARD
Performance Criteria
Criteria
1. The system is correctly started.
20%
2. The Installation CD is properly inserted.
20%
3. Handling and safekeeping of installation CD is observed.
20%
4. The instructions how to install device drivers are accurately followed.
20%
5. The device drivers are successfully installed
20%
Grade
PERFORMANCE RATIING 569 570 571 572 573 574 575 576 577 578 579 126
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Lesson3. CONDUCT TEST ON THE INSTALLED COMPUTER SYSTEM In the previous lesson, you were introduced with all the necessary knowledge and skills on installation of computer devices and operating system. Now, after executing the correct procedures I am sure that installation is a very easy task for you. Those skills will be very essential for the next lesson. In the next phase of your learning it will focus in conducting test on the installed computer components. After reading all the required topics and performing the essential skills you must be able to: Follow OHS policies and procedures in conducting tests; Check circuits and systems being isolated using specified testing procedures; Test devices, systems and/or installation to determine its conformity with the requirements; Undertake final inspections on the installed devices, systems to ensure conformity with the requirements; Accomplish technical reports on the tests conducted; and Follow procedures in forwarding documentation to appropriate personnel and/or authority on the test conducted.
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TESTING INSTALLED EQUIPMENT / DEVICES (COMPONENTS) As computer technician you will need a good understanding of the health and safety regulations from early on in your career, so that you understand the good practices demanded by law. In particular, you need to: report any accidents take reasonable care of your own health and safety when moving heavy components not cause any electrical hazards make sure that workstations meet safety requirements. You need to adhere to health and safety regulations as they will help to protect you and others and will avoid any unnecessary legal action for reckless and unsafe working practices. If you identify any health and safety problems, you should tell your line manager or the health and safety representative immediately.
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The most basic test is to switch the system on to check it starts without errors. ICT professionals are also likely to use tools and utilities to check that all is well with the system after an installation.
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The Use of Diagnostic Tools in testing installed hardware components and other peripherals Diagnostic tools are used to test and diagnose equipment. Diagnostic tools include the following: Digital multimeter is a device that can take many types of measurements. It tests the integrity of circuits and the quality of electricity in computer components. A digital multimeter displays the information on an LCD or LED.
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A loopback adapter, also called a loopback plug, tests the basic functionality of computer ports. The adapter is specific to the port that you want to test.
The toner probe, is a two-part tool. The toner part is connected to a cable at one end using specific adapters, such as an RJ-45, coaxial, or metal clips. The toner generates a tone that travels the length of the cable. The probe part traces the cable. When the probe is in near proximity to the cable to which the toner is attached, the tone can be heard through a speaker in the probe.
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Figure 114. Diagnostic Tools
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Software Tools
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Like hardware tools, there are a variety of software tools that can be used to help technicians pinpoint and troubleshoot problems. Many of these tools are free and several come with the Windows operating system.
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Disk Management Tools
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Software tools help diagnose computer and network problems and determine which computer device is not functioning correctly. A technician must be able to use a range of software tools to diagnose problems, maintain hardware, and protect the data stored on a computer. 128
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You must be able to identify which software to use in different situations. Disk management tools help detect and correct disk errors, prepare a disk for data storage, and remove unwanted files.
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The following are some disk management tools:
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FDISK: A command-line tool that creates and deletes partitions on a hard drive. The FDISK tool is not available in Windows XP, Vista, or 7. It has been replaced with the Disk Management tool. Disk Management Tool: Initializes disks, creates partitions, and formats partitions. Format: Prepares a hard drive to store information. ScanDisk or CHKDSK: Checks the integrity of files and folders on a hard drive by scanning the file system. These tools might also check the disk surface for physical errors. Defrag: Optimizes space on a hard drive to allow faster access to programs and data. Disk Cleanup: Clears space on a hard drive by searching for files that can be safely deleted. System File Checker (SFC): A command-line tool that scans the operating system critical files and replaces files that are corrupted.
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Use the Windows 7 boot disk for troubleshooting and repairing corrupted files. The Windows 7 boot disk repairs Windows system files, restores damaged or lost files, and reinstalls the operating system.
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Test procedures A test procedure is a set of steps to guide you through what needs to be done to thoroughly test the installation. It is designed to help you work more effectively and to make sure you test everything that needs testing. Test procedures are created in-house and could include these steps: 1. Gathering test information. The first step is to run the tests required by the procedure and find out what happens. You should record all the results of your tests in a log so that you know which pass and which fail, thereby requiring further action. 2. Validating the test information. The next step is to check the data you gathered from the tests to make sure it is correct. This is usually done by running the tests again. 3. Responding to test information. This step is important because you need to be able to recognize when a test shows problems or is successful. For example, if ping is used to test a network connection then ‘Request timed out’ shows the test was not successful.
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4. Checking specification. The final step is an important end to testing. You need to check the specification for the installation to make sure that it has been met. For example, if a user requested an upgrade to make their display run at 1920 x 1200, then the ICT professionalshould check that the graphics card and screen can do this.
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1. Turn off the computer, the monitor, and all peripherals. 2. Verify that all power cables are properly connected to the computer, the monitor and peripherals, and their power sources. 3. Verify that the keyboard and mouse interface cables are firmly attached to the proper connectors on the back of the computer. For a PS/2-compatible mouse, the keyboard and mouse interface cable connectors are identical except for their labels. For a serial mouse, the mouse interface cable must be firmly attached to one of the serial port connectors, and its captive screws must be secure enough to ensure a firm connection. 4. Verify that network cables (if present) are properly attached. 5. Verify that any devices attached to the serial and parallel port connectors are properly connected. Each of the serial and parallel port interface cables must be firmly attached to an appropriate connector on the back of the computer as well as to the interface connector on the device. The captive screws that secure these connectors at each end of the interface cable must be secure enough to ensure a firm connection. 6. Verify that the video interface cable is firmly attached to the video connector on the back panel or to a video expansion card, and also to the connector on the back of the monitor. For proper connection of the video monitor, see the documentation for the monitor. 7. Inspect all external monitor controls for any obvious damage or improper settings. For proper settings of the video monitor controls, see the documentation for the monitor. 8. Inspect the keyboard to ensure that no keys are sticking. If one or more keys are sticking, it may be necessary to replace the keyboard. 9. Inspect the exterior of the computer, including all controls and indicators, and all user-accessible data storage devices for any signs of physical damage.
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External Visual Inspection The external visual inspection consists of a quick inspection of the exterior of the computer, the monitor, the keyboard, any peripherals, and cables. While performing the visual inspection, make any necessary corrections. To perform the external visual inspection, perform the following steps:
Does the inspection reveal any problems? Yes. Proceed to the appropriate procedure in "Removing and Replacing Parts." 130
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No. Proceed to "Observing the Boot Routine." Observing the Boot Routine After you have performed an external visual inspection as described in the previous section, you should boot the system and, while the boot routine is running, observe the system for any indications of problems. NOTE: Most of the steps in this procedure require observation of system functions and indications, some of which can occur simultaneously. It may be necessary to reboot the system several times to complete all of these steps. To observe problem indications during the boot routine, perform the following steps:
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1. If the system is off, turn on all peripherals and the computer. 2. Check the power supply fan. Does the fan run normally? o Yes. Proceed to step 3. o No. Troubleshoot the system power supply.
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4. During the boot routine, observe the system for any of the following indications:
3. Watch the
, , and indicators on the upper-right corner of the keyboard. After all three indicators flash momentarily, and following a long pause (approximately 30 seconds), the Num Lock indicator should light up and remain on (unless the Num Lock option is set to Off in the System Setup program). Do these indicators flash on and off within approximately 10 seconds after the boot routine starts? o Yes. Proceed to step 4. o No. Troubleshoot the system power supply. If the troubleshooting procedure indicates that the system power supply is operational, troubleshoot the memory.
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Beep codes — A beep code is a series of beeps that indicates an error condition.
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System error messages — these messages can indicate problems or provide status information.
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o
Diskette-drive and hard-disk drive access indicators — These indicators light up in response to data being transferred to or from the drives. If either of these indicators fails to light up during the boot 131
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routine, troubleshoot the diskette drive or hard-disk drive subsystem, as appropriate. 5. Observe the monitor screen for the Diagnostics menu. Internal Visual Inspection NOTICE: Before you proceed with the internal visual inspection described in this section, ensure that the user has saved all open files and exited all open application programs if possible.
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A simple visual inspection of a computer’s interior hardware can often lead to the source of a problem, such as a loose expansion card, cable connector, or mounting screw. To perform the internal visual inspection, perform the following steps: 1. Turn off the system, including any attached peripherals, and disconnect all the AC power cables from electrical outlets. CAUTION: Before beginning to work inside the computer, disconnect the power supply from the power source and the power supply cables from the power supply.
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2. Remove the computer’s right side cover. CAUTION: The heat sink assembly can get extremely hot during system operations. Be sure that it has had sufficient time to cool before touching it. CAUTION: When handling the heat sink assembly, take care to avoid sharp edges on the heat sink.
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3. Verify that the chips, expansion cards, and SEC cartridge and heat sink assembly or assemblies are fully seated in their sockets or connectors. 4. To ensure that the chips are fully seated in their sockets, press firmly on the top of each chip. 5. Verify that all jumpers are set correctly. 6. Check all cable connectors inside the computer to verify that they are firmly attached to their appropriate connectors. 7. Reinstall the computer cover. 8. Reconnect the computer and any attached peripherals to their power sources, and turn them on.
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Suppose that you are in the workshop carrying out hardware installations, the owner are very impressed with you. There has been a lot of telephone time spent recently explaining to customers how to test installed components of their computer systems. The shop has decided to create their own video that will be uploaded to the website and YouTube. You have been asked to create this video. 1. Create a video to demonstrate how to install the hardware components.
Make sure you include everything you need to do to work safely.
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2. Show how to configure any device installed in the computer.
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3. Create another video on the following:
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a. Undertake final inspection on the assembled computer system for functionality. This will be to test that the newly installed hardware components work without problems; b. Accomplish technical reports on the tests conducted; and c. Follow procedures in forwarding documentation to appropriate personnel or authority
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Test I. Identification
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Direction: Identify the terms being described in the following sentences. 1. These are mobile computers that are very handy to use. 2. They are computers designed to provide services to client machines in a computer network. 3. They are also called mid-range systems or workstations. 4. A computer with a microprocessor and its central processing unit it. 5. They fall in the category of laptops, but are inexpensive and relatively smaller in size. 6. A type of computer which is intended be used on a single location. 7. They use digital circuits and are designed to operate on two states, namely bits 0 and 1. 8. Computers that have the capacities to host multiple operating systems and operate as a number of virtual machines and can substitute for several small servers. 9. It is a handheld computer and popularly known as a palmtop. 10. These computers can be worn on the body and are often used in the study of behavior modeling and human health. 11. It is considered as the most important program that runs on a computer. 12. It is composed of a device that accepts data and instructions from the user or from another computer system. 13. Any piece of computer hardware that displays results after the computer has processed the input data that has been entered. 14. Any apparatus for recording computer data in a permanent or semi-permanent form. 15. It protects a computer network from unauthorized access. 16. Type of network that connect larger geographic areas, such as Florida, the United States, or the world. 17. This is an internetworking system capable of joining together two networks that use different base protocols. 18. It is consists of two or more computers that are linked in order to share resources (such as printers and CD-ROMs), exchange files, or allow electronic communications. 19. It is a small, simple, inexpensive device that joins multiple computers together. 20. A device filters data traffic at a network boundary.
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Test II. True or false
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Direction: Write TRUE if the statement is correct and FALSE otherwise.
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1. Always use an anti-static wrist strap when working on a computer (except when working on monitors)
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2. Always disconnect a computer from the AC power and from any powered peripherals while you are working on it. 3. Always grasp a metal part of the computer chassis with your bare hand before you touch anything inside. Do this even if you are wearing an anti-static wristband. 4. Always handle electronic components by a non-conducting (non-metallic) edge. Don't touch the pins or other connectors. 5. Always use a UL-approved surge protector or an Uninterruptible Power Supply that incorporates surge and spike protection 6. Never eat, drink, or smoke while working on a computer. 7. Whenever you purchase software or hardware for your computer, you should first make sure your computer supports the system requirements. 8. The speed of a computer's processor chip (technically known as its "clock speed") in measured in gigahertz (GHz). 9. A computer's graphics system determines how well it can work with visual output. 10. Today 40GB is an absolute minimum hard drive size for a new computer running Windows 7. 11. When attaching cables, never force a connection. 12. BIOS instruct the computer on how to perform a number of basic functions such as booting and keyboard control. 13. The external visual inspection consists of a quick inspection of the interior of the computer. 14. Disk management tools help detect and correct disk errors. 15. The most basic test is to switch the system on to check it starts without errors.
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Test III. Multiple Choices
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Direction: Read each questions carefully and write the letter of the best answer.
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1. These are small software programs that help the operating system use the device. a. Application b. Driver 2. Which of the following is software shared on a small memory chip on the motherboard? a. Installer c. Driver b. Application d. BIOS 3. It is the way to set up a system or the assortment of components that make up the system. a. Configuration c. Driver b. Set up d. Installation 4. Which of the following is not a Windows XP minimum requirement? a. 128MB RAM or higher b. CD- ROM or DVD ROM c. Lower resolution monitor d. 4.3 GB hard disk space or more
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5. If you see a message to press any key to boot the CD and you fail to do so, what do you think will happen? a. The computer will restart b. Set up inspecting your system will appear c. It will be prompted to BIOS setup d. It will return to boot menu 6. What key should you press if you need to install any third- party or RAID drivers? a. F2 c. F9 b. F6 d. F12 7. Where do we typically install the operating system? a. Drive C b. DVD c. External Drive d. Floppy Drive 8. Suppose that you will install Windows XP on a system with more than one partition, what important process should be done? a. Change the file system b. Delete the data and files on the different partition c. Examine the partition d. Format the correct partition 9. What file system is usually used during installation? a. FAT b. FAT32 c. NTFS d. NTFS32 10. Which of the following is a connector on the back of a computer or other device? a. Modem b. Port hub c. Router d. Network Gateway
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Test IV. Matching Type Direction: Match column A with Column B and write your answer on a separate sheet of paper.
A. 1) It serves as the brain of computer. 2) Printed-circuit boards (also called interface cards) that enable the computer to use a peripheral device 3) Also called read/write memory 4) Small portable disk drive usually used for backing up files 5) Main board of a computer 6) Also called diskette 7) Acts as a pointing device 8) Device that makes sounds, clips and any audio materials be heard. 9) Component that reads and record data in CDs and DVDs. 10) It is a visual device that displays the information 11) Plug- and play portable storage device 12) Prints text and illustrations in paper 13) Converts AC into DC 14) Allows more than one program to run concurrently 15) Handheld computer
a) b) c) d) e) f) g) h) i) j) k) l) m) n) o) p) q) r) s) t)
B. Adapter CD- ROM CPU Flash Drive Floppy disk Microphone Monitor Motherboard Mouse Multitasking Optical Discs PDA Power supply Printer RAM Register ROM Speaker Tablet Zip Drive
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SKILLS TEST Direction: Listed below are some of the most important skills that you must gain in order to render quality service when you enter the real world of Computer Hardware Servicing. Read the skills carefully. Write “YES” if you are familiar with the skill and “NO” if not. Feel free to answer each skill. Write your answers in your notebook. Skills in Computer Hardware Servicing I can open a computer case. I can connect the mouse. I can connect the keyboard. I can connect the monitor. I can apply occupational health and safety precautions while working. I can remove the system fan. I can detach the power supply from the system unit. I know how to remove the RAM from the motherboard. I can remove the hard drive from the system unit. I can install the power supply. I know how to install the motherboard. I can install the internal drives in a system unit. I know how to attach RAM in the memory socket. I can install CD / DVD drives. I know how to install an operating system I know how to configure a hardware components I know the procedures in inspecting operating systems and software components
YES
NO
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adapters - These are printed-circuit boards that enables the computer to use a peripheral device for which it does not have the necessary connections or circuit boards. Analog Computers- It uses continuous variables for mathematical operations and utilizes mechanical or electrical energy. Bridge is a device filters data traffic at a network boundary Digital Computers- They use digital circuits and are designed to operate on two states, namely bits 0 and 1 Digital multimeter is a device that can take many types of measurements. It tests the integrity Drivers- are small software programs that help the operating system use or “drive” the device Ethernet switch is a device that gathers the signals from devices that are connected to it hard disk drive- Is a magnetic storage device that is installed inside the computer. hardware- These are the tangible component of a computer system. hazard- Is a situation in the workplace that has the potential to harm the health and safety of people or to damage plant and equipment. Hub- is a small, simple, inexpensive device that joins multiple computers together Hybrid Computers- a combination of both digital and analog computers Loopback adapter- is also called a loopback plug, tests the basic functionality of computer ports Mainframe Computers- these are computers have the capacities to host multiple operating systems and operate as a number of virtual machines and can substitute for several small servers Microcomputers- A computer with a microprocessor and its central processing unit it is known as a microcomputer Minicomputers- are also called mid-range systems or workstations 139
motherboard- The main circuit board of a computer containing all the essential parts of a PC. Network firewall - protects a computer network from unauthorized access Personal Digital Assistants (PDAs)- is a handheld computer and popularly known as a palmtop smart board - Type of display screen that has a touch sensitive transparent panel covering the screen. static electricity - An accumulation of electric charge on an insulated body. Servers- They are computers designed to provide services to client machines in a computer network
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ATA- Advance Technology Attachment BIOS- Basic Input Output System CD- Compact Disc CHS- Computer Hardware Servicing CRT- Cathode Ray Tube ESD- Electro Static Discharge DVD- Digital Versatile Disc FAT- File Allocation Table GB- Giga Byte HDD- Hard Disk Drive LAN- Local Area Networking LCD- Liquid Crystal Display LED- Light Emitting Diode MB- Mega Byte NTFS- New Technology File System OHS- Occupational Health and Safety OS- Operating System PDA- Personal Digital Assistant PPE- Personal Protective Equipment RAM- Random Access Memory 141
ROM- Read Only Memory SATA- Serial Advance Technology Attachment USB- Universal Serial Bus WAN- Wide Area Network VGA- Video Graphic Array
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Books and Articles and Printed Materials: 1. Barry Press, Marcia Press, PC Upgrade and Repair Bible, a. Desktop Edition., Wiley Publishing Inc., 10475 Crosspoint b. Boulevard, Indianapolis, IN 46256 2. Ron Gilster, PC Repair Bench Book., Wiley Publishing Inc., 10475 a. Crosspoint Boulevard, Indianapolis, IN 46256 3. Barry Press, Marcia Press, PC Upgrade and Repair Bible, Desktop a. Edition., Wiley Publishing Inc., 10475 Crosspoint Boulevard, Indianapolis, b. IN 46256 4. K to 12 Basic Education Curriculum- Technology and Livelihood Education a. Learning Module –Computer Hardware Serviciing- RONALDO V. RAMILO and b. DEOVER M. PASCO 5. Technology and Livelihood Education- Information and Communications Technology Learners Manual – Grade 7 & 8 - Marigen N. Leosala, Bobby P. Caoagdan, Ronaldo V. Ramilo, and Rosalie P. Lujero Electronic Resources: 1. http://www.buzzle.com/articles/computer-memory-types.html Computer Memory Types 2. http://www.athropolis.com/popup/c-comp2.htm Measurements for Memory & Storage 3. http://www.ustudy.in/ce/hard/u1 Fundamentals of PC repair 4. http://danreb.com/sites/default/files/CHS-NC2%20Reviewer%20%20With%20Oral%20Questioning_0.pdf Occupational Health and Safety Precautions 5. http://puzzlemaker.discoveryeducation.com/CrissCrossSetupForm.asp Puzzles for Activities 143
6. http://info.psu.edu.sa/psu/cis/kalmustafa/CISCO/Lecture%20Slides/ITE_PC_ v40_Chapter2.pdf Occupational Safety Precautions 7. http://www.youtube.com/watch?v=6N7bqBsFL0wComputer Hardware Basics 8. http://www.wikihow.com/Install-Computer-HardwareHow to install Computer Hardware 9. http://www.directron.com/howtoupsys.htmlHow to install Computer components 10. http://www.bechtel.com/assets/files/Environmental/ToolboxSafetyTopics/20 10/ProperToolSelection.pdf Tool Selection 11. http://www.iml.uts.edu.au/assessment-futures/designing/assembling.html 12. http://www.instructables.com/id/Disassemble-a-Computer/- Computer Basics 13. www.professormesser.com- PC Hardware, Networking ,Operating Systems and Troubleshooting
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Republic of the Philippines DEPARTMENT OF EDUCATION K to 12 Basic Education Curriculum Technology and Livelihood Education
Content Standard
Performance Standard
The learner demonstrates understanding of the underlying concepts and principles on diagnosing and troubleshooting of computer systems.
The learner independently diagnoses and troubleshoots computer systems as prescribed in the TESDA Training Regulation.
MODULE 4:
DIAGNOSE AND TROUBLESHOOT COMPUTER SYSTEMS (DT) Number of Sessions (Time Allotment): 60 hrs 144
Welcome to the next level of your modular training in Computer Hardware Servicing (CHS) under the Information and Communications Technology (ICT) Course. In this module you will have a great deal of diagnosing and troubleshooting computer system. At the end of this module you will be able to plan and prepare for diagnosis of computer system errors, configure, inspect and test computer system networks and errors. Those skills are essential for you to reach the door of National Certification II in Computer Hardware Servicing. In this module, topics will be introduced progressively lesson by lesson for easy understanding. After carefully answering the diagnostic assessment, reading all the lessons, answering all the guide questions, masterfully performing all the activities, showing evidences of learning and finally answering the summative test, then you will have a considerable knowledge and skills in diagnosing and troubleshooting computer system essential to be successful in computer hardware servicing as one of the career option in ICT. Reminder! Just follow the instructions given in this module. Now let us start exploring new things in this module.
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In this module, there will be four (4) major topics that you will encounter: (1) be plan and prepare diagnosis of computer system errors; (2) diagnose and configure computer systems and networks ; (3) inspect and test the configured computer systems and networks ; and (4) test systems and networks. The four major topics contains sub-topics which all leads to diagnose and troubleshoot computer systems. This module contains what to KNOW, what to PROCESS, what to REFLECT and UNDERSTAND as well as what to TRANSFER. The competencies for this module are: LO 1. Plan and prepare for diagnosis of computer systems errors Follow OHS procedures in planning and preparing diagnosis of computer systems errors Determine the computer systems errors using manual and software diagnosis LO 2. Diagnose and configure computer systems and networks Follow OHS procedures in planning and preparing diagnosis of computer systems and network errors Identify the diagnosed computer systems and network errors based on the job requirements Configure computer systems and networks LO 3. Inspect and test the configured computer systems and networks Follow OHS procedures in inspecting and testing configured computer systems and networks Inspect configured computer systems and networks Replace defective components Reinstall defective computer systems Identify networks errors Repair networks errors based on standard procedures Test the configured computer systems and networks LO 4. Test Systems and Networks Follow OHS procedures in testing systems and networks Test computer systems and networks in accordance with the job requirements Accomplish technical reports on the tests conducted In order to master the above listed competencies, you must be knowledgeable of the topics under what to KNOW, perform activities required under what to PROCESS, accomplish additional meaningful tasks under what to REFLECT and UNDERSTAND and finally show some evidences of your learning by transferring what you have learned in a different context under what to TRANSFER.
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You will be challenged to dig deeper into your prior knowledge and previous experiences about computer hardware servicing.
Instruction: Read each of the statements in the left-hand column of the chart. Place a check on the column that indicates your answers. Knowledge able
Have a little Knowledge
No Knowledg e at All
Plan and prepare work to ensure occupational health and safety (OHS) policies and procedures are followed Obtain materials, tools, equipment and testing devices needed to on form with job requirements Interpret work instructions according to job requirements Obtain computer components/devices/systems and determines its location prior to installation Install equipment/devices/systems in accordance with job requirements Check/Test devices/systems and/or installations to determine the conformity to job requirements. Check computer systems and networks for configuration in accordance with specifications and requirements Diagnose fault or problem in the computer systems and networks in line with standard operating procedures (SOP) Configure the identified systems and networks based on specifications and job requirements Inspect and test configured computer systems and networks in conformity with manufacturer's instructions/manual Correct/Adjust components or parts of computer systems and networks in accordance with job requirements Test computer systems and networks to ensure safe operation Perform scheduled/periodic maintenance in accordance with manufacturer's requirements Make needed repairs/replacements in accordance with established procedures, when necessary Document tasks undertaken in accordance with SOP Clean and clear worksite of all surplus/excess materials in accordance with company SOP
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LESSON 1: PLAN AND PREPARE FOR DIAGNOSIS OF COMPUTER SYSTEMS ERRORS
SAFETY PRECAUTIONS Personal Protective Equipment Proper preparation is the key to a successful work. Before you begin, make sure that you have the tools you will need, and secure a clear well-lit workplace. Gather all the components you’ll be using and unpack them at the same time. Always keep in mind that personal protection is one of the traits of a good computer technician. Types of personal protective devices 1. Anti-static devices 2. Power surge protectors 3. Personal equipment Anti-static devices Devices designed to protect the computer from static electricity.
Anti – static wrist strap
Anti- static mat
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Anti- static bag
Anti-static spray Power surge protectors Devices designed to protect the computer from sudden power surges from intermittent power sources. Examples: 1. AVR (Automatic Voltage Regulators)
2. UPS (Uninterrupted Power Supply)
Personal Equipment Small paint brush
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Screw drivers
Pliers and tweezers
Compressed air
Handheld vacuum
Directions: Perform the activity below.
Choose a partner Do a simulation exercise o One will act out the role of a computer teacher. o The other will be the student Situation: Computer teacher will show/demonstrate to the students the Personal Protective Devices, what they are and how they are used. The Student keeps on asking about the Personal Protective Devices/Equipment and how they can be maintained in good condition of PC.
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Answer the following questions in your own answer/test notebook 1. For somebody who always works (do troubleshooting) with computers, what personal protective devices do you usually use? How often do you use them? 2. Computers should be protected from static electricity to prevent component malfunction. What anti-static devices can you utilize to avoid such malfunction?
TYPES OF COMPUTER SYSTEM ERROR There are several errors in a computer from the point you open it up to the point you reach the stand by window (reaching standby windows means boot process has no error). Here's a list of computer error. 1. No Video Output - When you open your PC, nothing shows up in your monitor and the LED indicator of your monitor is flashing in yellow color. 2. No Video Output - Same as number one but now the LED indicator of your monitor is in steady orange color. 3. Doesn't Boot - When you open your PC it will show the processor brand and/or the motherboard brand but doesn't continue. Usually this error will result to system restart over and over again. 4. Never Ending Loading of Operating system - The computer opens up then boots but when the operating system loads it doesn't continue and it will take a lifetime if you're going to wait for it to load. 5 Lots of pop up windows showing on standby mode - This also happens even if you try disconnecting your computer set from the internet. This is what we called aftershock virus which will continue to run even if internet is disconnected. 6. Lots of hardware installation windows appear - This happens even if you try installing the hardware. When you restart your set it will happen again. 7. Safe mode doesn't work - When you try going to safe mode all you will see is a list of files in Command prompt style. 151
8. Keyboard and mouse system restart - This will happen only in standby mode, when you move your mouse or type something, your system will automatically restart and the worst part is it will delete a file at random. 9. Sound on/off error - Upon loading the operating system, you will hear a loading sound and then the sound stops, when you try running an audio file, no sound will be heard. 10. Application causes system to restart - Just like the mouse problem, when you open a program that will take the whole screen like for example a game and/or a program applications, when you close it, it will cause your system to restart. Aside from the common computer errors, computers also can have different Operating System (OS) errors. OS errors can be classified into various categories, such as: 1. System errors – These are moderately dangerous types of errors among those that can pop up on your PC. System errors are caused by malfunctioning hardware components, corrupted operating system modules, etc. 2. Runtime errors – Runtime errors are caused by corrupted or malfunctioning system files or software executables. Most runtime errors cause the application that caused it to shut down. However, more serious runtime errors may cause the system to become unstable or unresponsive, leaving you with no choice but to reach for the Reset button. 3. Stop errors – Stop errors are caused by corrupted hardware, especially malfunctioning RAM modules and bad sectors on hard disks. Stop errors can be difficult to resolve at times. 4. Device Manager Errors – These are usually caused by corrupted driver files or malfunctioning hardware components. In case of the former cause, the problem is usually solved simply by reinstalling or updating the drivers. However, the latter cause can often be solved only by replacing hardware components. 5. POST code errors – POST code errors are caused by malfunctioning hardware components, and are characterized by short beep sounds from the tiny internal speaker of your motherboard. POST code errors occur when you press the power button to turn on your PC.. 6. Application errors – These can be caused at any point of time. As the name suggests, these are caused by applications while those are running. These are usually caused by glitches in the program code itself. These are usually resolved by updating the program to its latest version. 7. Browser Status Codes – These are caused by problems faced by browsers when trying to access a website. These can be caused by misplaced web pages in the server of the website itself, or due to connection problems. For 152
instance, a 404 error would indicate that the browser is trying to access a webpage that does not exist in the specified location.
DIAGNOSING COMPUTER SYSTEMS PC Diagnosing Probably the most frustrating problem computer users run into are startup problems, where your computer won’t boot. Equally annoying are error messages you constantly run into during your computer’s startup process. In this module you will be given a few tips on how you can avoid some of the most common problems that happen right after your computer is turned on. Here you will learn the basic troubleshooting.
Trial and error: When you find a faulty component in your computer, check it with the other computers so that you can make sure whether the fault is in the component or not. Check cables: In case of any device failure, check all the cables of your computer such as data cables, power cable, internal circuitry cables and make sure that all these are plugged in and working fine. Hardware settings: Check the hardware settings in the CMOS and in the device manager of the system and make all the device drivers up to date and all the cards are plugged in properly. Notice changes: When you notice a software or hardware error in your computer, determine what was changed before the problem occurred. Event viewer: In the event viewer, you will find the error or warning messages associated with any faulty hardware or software. Make notes: Troubleshooting is a big learning option and we can learn a lot when we face any kind of troubleshooting in our computer. Make notes including the error messages and their solutions, so that you have a record on how a certain problem occurred and how did you solve it.
Common PC Problems and solutions You are working away at your computer when suddenly, up comes an error message – or worse, your computer comes to a screeching halt. Here are the common computer problems and solutions that can help you.
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Steps 1. Check the POST. POST stands for Power On Self-Test. This is generally the first or second thing that appears on a computer after turning on the power. This appears before the operating system begins to load. The POST will display any problems found with hardware that makes the computer unable to boot, POST may also display problems with hardware that allow the computer to boot, but not operate at its full capacity during operation. 2. Notice the load time of the OS (operating system). A longer than usual load time may indicate errors in the hard drive. 3. Notice any graphics problems once the OS has loaded. Reduced graphics may indicate driver failures or hardware failures with graphic cards. 4. Perform an auditory test. An auditory test is an unorthodox, but still effective way of judging how a computer is working. With the computer on and running, play any decent length audio file (usually above 30 sec). If the audio is choppy or slow, it usually means that the processor is working at an elevated level, or there is not enough RAM to run all programs loading. Changing the startup sound is a great way to apply this test. Another issue associated with choppy sounds is PIO (Programmed Input/Output) Mode. This affects how the hard drive reads and writes data from a drive. Switching to Direct Memory Access (DMA) allows for faster reads and writes, and can sometimes repair choppy audio. 5. Check any newly installed hardware. Many operating systems, especially Windows, can conflict with new drivers. The driver may be badly written, or it may conflict with another process. Windows will usually notify you about devices that are causing a problem, or have a problem. To check this use the Device Manager, this can be accessed by entering the Control Panel, clicking the System icon, clicking the Hardware tab, and clicking on Device Manager. Use this to check and arrange the properties of hardware. 6. Check any newly installed software. Software may require more resources than the system can provide. Chances are that if a problem begins after software starts, the software is causing it. If the problem appears directly upon startup, it may be caused by software that starts automatically on boot. 7. Check RAM and CPU consumption. A common problem is a choppy or sluggish system. If a system is choppy it is good practice to see if a program is consuming more resources than the computer can provide. An easy way to check this is to use the Task Manager, right click on the taskbar select Task Manager, and click the Processes tab. The CPU column contains a number that indicates the
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percentage of CPU the process is consuming. The Memory Usage column indicates how much memory a process is consuming. 8. Listen to the computer, if the hard drive is scratching or making loud noises, shut off the computer and have a professional diagnose the hard drive. Listen to the CPU fan, this comes on a high speed when the CPU is working hard, and can tell you when the computer is working beyond its capacity. 9. Run a virus and malware scan. Performance problems can be caused by malware on the computer. Running a virus scan can unearth any problems. Use a commonly updated virus scanner (such as Norton Antivirus or Avast! Antivirus) 10. Check for the problem in safe mode. To enter safe mode, tap F8 repeatedly during POST (this works on most systems). If the problem persists in safe mode, it is a fair bet that the operating system itself is to blame. Common Trouble shooting for Computer Units 1. Double check the power connections. 2. Voltage Regulator and power supply could cause power failure in the computer unit. 3. Check the power cords and cable connectors in your computer unit. 4. Unseated card. Loose cards could cause malfunction. 5. Check the boot sequence configuration in the advance BIOS (Basic Input /Output Unit) setup.
Diagnosing Network Connection Things to look for if a PC is connected to the internet or network: First check the cable connecting to the network card into the network hub. Check the back of the computer to see if the network card light is on Check the network cable ( use cable tester) Check the network HUB Network (use multi-tester) HUB
Network cable
Network card
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Identify the following: 1. Moderately dangerous types of errors among those that can pop up on your PC. 2. Caused by malfunctioning hardware components, and are characterized by short beep sounds from the tiny internal speaker of your motherboard. 3. Caused at any point of time. As the name suggests, these are caused by applications while those are running. 4. Usually caused by corrupted driver files or malfunctioning hardware components. 5. Caused by corrupted or malfunctioning system files or software executables. 6. Caused by corrupted hardware, especially malfunctioning RAM modules and bad sectors on hard disks. 7. Caused by problems faced by browsers when trying to access a website.
Task: Develop a Sample Diagnostic Plan List down all possible components to be checked based on the symptoms. Symptoms: Dead Computer Monitor
Good
Defective
Remedy
AC outlet AVR AVR fuse Monitor Power Cable Monitor Switch Power Supply
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Diagnosing a Computer Power Supply Create a diagnostic plan for troubleshooting a power supply with the use of the following tools, materials and equipment. You will be assessed using the following criteria CRITERIA
Passed
Failed
1. Sequence of steps in diagnosing is followed. 2. Safety precaution is observed. 3. Appropriate tools are used in diagnosing. 4. Diagnostic plan for troubleshooting is created. PERFORMANCE RATING
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LESSON 2. DIAGNOSE AND CONFIGURE COMPUTER SYSTEMS AND NETWORKS
SAFETY PRECAUTIONS Occupational Health and Safety (OHS) refers to the legislation, policies, procedures and activities that aim to protect the health, safety and welfare of all people at the workplace. Every worker has a right to healthy and safe work and to a work environment that enables them to live a socially and economically productive life. Safety practices should be learned early and always adhered when working with any electrical device including personal computers and peripherals. Personal safety while working with PC’s The following statements are some safety precautions to take before working with any computer devices:
Before doing anything, listen to your teacher’s instruction to prevent accidents or any unwanted events that may occur on your workplace. Do not work on computer when you are wet because you might get electrocuted. Do not remove internal devices of the computer when it is turned on. Avoid playing or running while inside the room. Always wear personal protective equipments (PPE) like coverall, shoes with rubber sole, anti-static wrist strap, etc. Ask for assistance from your teacher when it comes on dealing with computer devices. Applying safety measure when handling tools and equipment are necessary to avoid certain damages.
The student is further expected to maintain good health, to be neat in personal appearance and to practice safe working procedures at all time with appropriate equipment.
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Basic Concepts of Electricity
This lesson will introduce us to the fundamental knowledge of electricity. It will enable student to be equip with the basic knowledge in electricity.
Basic Electrical Terms Electricity
is define as the flow of electron or electric current. It is an invisible form of energy that can be transform into other form of energy like heat light and mechanical.
Electron
is the negatively charge component of an atom. It has the ability to flow.
Proton
is the positively charge component of an atom. It had the ability to attract electron.
Matter
is anything that occupy space and has mass. It can be a solid, liquid or gas in state.
Atom
Basic component of matter. It composes of a nucleus which is the central part, the protons and electrons.
Current
Same as electricity or flow of electron. The amount of current flowing in a circuit can be measured in ampere (I).
Voltage
the amount of pulling force that makes the electron flow. Also known as potential difference or EMF(electromotive force). The amount of voltage can be measured in volt (V).
Resistance
define as the opposition to the flow of current. The amount of resistance can be measure in ohms (Ω).
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Conductors and Insulators
Conductors are materials that easily allow the flow of current, or it has a low resistance to current flow. Examples; aluminum, gold, silver, copper, iron
Insulators are materials that do not easily allow the flow of current, or it has a high resistance to current flow. Examples; rubber, plastic, paper
Types of Current 1. Direct Current In direct current (DC), the flow of electric charge is only in one direction. This is the type of electricity is produced by batteries, static, and lightning. A voltage is created, and maybe stored, until it is consumed. When the current flows directly, in one direction. In the circuit, the current flows at a specific, constant voltage (this is oversimplified somewhat but good enough for our needs.) When you use a flashlight, pocket radio, portable CD player or virtually any other type of portable or batterypowered device, you are using direct current. Most DC circuits are relatively low in voltage; for example, your car's battery is approximately 12V, and that's about as high a DC voltage as most people ever use.
Figure 1. Direct Current An ideal 12 V DC current. The voltage is considered positive because its potential is measured relative to ground or the zero-potential default state of the earth. Direct currents flow in one direction only, and are constant in time. Their appearance is that of a straight line which does not vary. They are produced from power sources such as batteries, power supplies and DC generators. Photovoltaic devices such as solar cells also generate DC power. 2. AC Alternating Current
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In alternating current (AC, also ac) the movement of electric charge periodically reverses direction. This type of electricity is produced or generated by AC generators commonly from a hydro electric plant. It is the commercial power that we use in homes and offices. Delivered through a power transmission lines. AC current can be reduced through the use of power transformer to suite for its application. It can also be converted to DC for a specific purpose. In the Philippines AC is rated as 220V AC at 60 Hz. Alternating currents change direction, flowing first one way and then the other. They are sinusoidal waves, so that they change in time. They are produced from sources such as power supplies and AC generators. In North America, AC is 120 volts and 60 hertz or cycles per second. This means it changes direction 60 times per second. In Europe, it is generally 50 hertz with 220 to 240 volts.
Figure2. Alternating Current Why does standard electricity come only in the form of alternating current? There are a number of reasons, but one of the most important is that a characteristic of AC is that it is relatively easy to change voltages from one level to another using a transformer, while transformers do not work for DC. This capability allows the companies that generate and distribute electricity to do it in a more efficient manner, by transmitting it at high voltage for long lengths, which reduces energy loss due to the resistance in the transmission wires. Another reason is that it may be easier to mechanically generate alternating current electricity than direct current. PC’s use only direct current, which means that the alternating current provided by your utility must be converted to direct current before use. This is the primary function of your power supply.
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AC POWER
PC’s PSU
DC POWER
MOTHERBOARD DRIVES COOLING FANS
Figure 3. Simplified block diagram of a PC power supply
Electric Circuit Electric circuit - is the pathways for electricity to flow. Components of Circuit
Load - commonly represented by a bulb or any electrical component that consumes electricity.
Supply - Commonly represented by a cell or a battery
Switch - an electrical device that opens or closed a circuit.
Load
Supply Switch
Figure4. A simple circuit
Types of Circuit 1. Open Circuit - a type of circuit that has an open path for current to flow. It means that current cannot flow in open circuit.
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Load
-
+ Supply
Switch
Figure5. An open circuit The switch is said to be “OPEN” the current can’t flow into the circuit and the bulb is “OFF” 2. Closed Circuit - a type of circuit that has a closed path for current to flow. It means that current can flow in a closed circuit.
Load
-
+
Supply
Switch Figure 6. A closed circuit
The switch is said to be “CLOSED” the current can’t flow into the circuit and the bulb is “ON”
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I. Identification: Direction: Identify the following statement. _________1.
Define as the flow of electron or electric current. It is an invisible form of energy that can be transform into other form of energy like heat light and mechanical.
_________2.
The negatively charge component of an atom. It has the ability to flow.
_________3.
Define as the opposition to the flow of current. The amount of resistance can be measure in ohms (Ω).
_________4.
The positively charge component of an atom. It has the ability to attract electron.
_________5.
Anything that occupy space and has mass. It can be a solid, liquid or gas in state.
_________6.
Basic component of matter. It composes of a nucleus which is the central part, the protons and electrons.
_________7.
Same as electricity or flow of electron. The amount of current flowing in a circuit can be measured in ampere (I).
_________8.
The amount of pulling force that makes the electron flow. Also known as potential difference or EMF (electromotive force). The amount of voltage can be measured in volt (V).
_________9.
Materials that easily allow the flow of current, or it has a low resistance to current flow.
_________10. Materials that do not easily allow the flow of current, or it has a high resistance to current flow. _________11. A computer power supply converts AC to ___________________. _________12. Define as the pathways for electricity to flow.
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_________13. A component of a circuit that is commonly represented by a bulb or any electrical component that consumes electricity. _________14. A component of a circuit that is commonly represented by a cell or a battery. _________15. An electrical device that opens or closed a circuit. _________16. A type of circuit that has a closed path for current to flow. It means that current can flow in this circuit. _________17. A type of circuit that has an open path for current to flow. It means that current cannot flow in this circuit. _________18. A circuit connection has only one path of current flow. In this circuit connection the current remain constant. _________19. A circuit connection that has 2 or more path of current. In this circuit the voltage remains constant. _________20. An invisible form of energy.
Techniques for diagnosing computer systems Computer Diagnosis Sometimes when the problem with a system is not totally apparent and the problem may be intermittent, using a basic common diagnostic procedure may help determine what is wrong. This procedure has a number of steps that, if followed each time, can be of help. Rules in Diagnosing Computer System 1. Know the facts Educate oneself on all aspects and operation of computer parts. Continuous learning on computer technology. 2. Use your common sense 3. Focus on Field Replaceable Units
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Identify the different types of FRU that can be used for replacement or sub assembly. 4. Proper assembly and disassembly 5. Factors Causing Computer Failures and Defects People ware Untrained personnel would probably damage programs in PC. Firmware Programs or software burnt in chips may be corrupted. Software Corrupted operating systems would cause the system to fail. Hardware
Defective hardware components would lead to computer malfunction. Hardware conflicts and viruses can hinder your computers performance.
ESD (Electro Static Discharge) Electro static discharge can easily damage sensitive components in your computer. Electricity Incoming supply from AC outlet must be regulated; power surges can damage computer units. Problem Isolation Problem isolation is a detective work in which you need to determine what is out of the ordinary by making detailed observation of what is not working normally and record any information as you proceed. The information you will be able to gather will help diagnose your computer. You need to observe wisely. Look for any abnormalities in the unit, any change in smell or foreign smell, listen to all the sounds, and error codes. Component Isolation This section will aid in determining components in your system which are failing. First, most systems have 3 major components; monitor, system unit, and printers. Some have multiple external devices. To troubleshoot, you need to isolate major components which are failing to operate. Diagnostics Procedure for ATX Power Supply Failure 1. Determine whether or not the power comes on.
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2. Check the switch operation with a Digital Volt Meter on the continuity or resistance setting. 3. Check the pins if the corresponding voltage are properly regulated to the motherboard. 4. Replace the power supply unit if defective. ATX Version 1.2 - 20 wire motherboard connector
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
3.3V
3.3V
Gnd
5V
Gnd
5V
Gnd
P_OK
5VSB
12V
Oran
Oran
Blk
Red
Blk
Red
Blk
Gray
Purp
Yell
Oran
Blue
Blk
Green
Blk
Blk
Blk
White
Red
Red
3.3V
-12V
Gnd
P_ON
Gnd
Gnd
Gnd
-5V
5V
5V
Pin 11
Pin 12
Pin 13
Pin 14
Pin 15
Pin 16
Pin 17
Pin 18
Pin 19
Pin 20
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Flowchart for ATX Power Supply Repair Warning! You must unplug your ATX power supply from the wall before working inside the case.
ATX Diagnostic chart
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Things to Consider There are many devices, parts, cords, and connections on a computer, which means that there are many possible problems that could arise. In addition, your computer uses a variety of software, which can also cause problems. However, no matter what the problem is, you can use the following tips to help you find a solution:
Always check the cables: Many computer problems are related to an issue in the cables and connections. The easiest first step you can take to troubleshoot most problems is to check all related cables and connections. Isolate the problem: If possible, try to isolate the problem. For example, if you can't get the cursor to move on the screen, try to determine if the issue is with the mouse. If you have an extra mouse, you can alternate devices to see if the one plugged in is the issue, or use the arrow keys on the keyboard to help determine if the mouse is the source of the problem. When trying to isolate the problem, only make one change at a time.
Figure 7. An error message
Take notes about error messages: If your computer gives you error messages, be sure to write down as much information as possible. If the basic troubleshooting steps don't work, you may need the information. Remember the steps you've taken, or write them down: Once you start troubleshooting, you will want to remember what you have done, so you don't repeat yourself. If you can't remember it, then write it down. If you end up asking someone for help, it will be much easier if they know exactly which steps you've taken.
Simple Solutions to Common Problems Most of the time, problems can be fixed by using simple troubleshooting techniques, such as closing and re-opening the program. It's important to try these simple solutions before resorting to more extreme measures. If the problem still isn't fixed, you can then try other troubleshooting techniques, such as reinstalling the software.
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Program Runs Slowly or Isn't Working Right
If a program is running slowly or otherwise isn't working right, the first thing you should try is closing the program and re-opening it. You can also shut down your computer, wait a few seconds, and boot it up again. Some minor problems will work themselves out when you do this. Check with the company for any known problems or updates to the software.
Figure 8. Checking for updates Program is Completely Unresponsive
If a program has become completely unresponsive, you can press (and hold) Control+Alt+Delete on your keyboard to open the Task Manager. You can then select the program that isn't working and click End Task. If you are using a Mac, you can press Option+Command+Esc to open a similar dialog box.
Figure 8. The Task Manager
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Problems Starting or Shutting Down the Computer Power Button Will Not Start Computer
Figure 9. Resetting a surge protector
If your computer does not start, begin by checking the power cord to confirm that it is plugged securely into the back of the computer case and the power outlet. If it is plugged into an outlet, make sure it is a working outlet. Often, this will require you to plug a lamp or other electrical device into the outlet to make sure it is receiving power. If the computer is plugged into a surge protector, verify that it is turned on. You may have to reset the surge protector by turning it off and then back on. You can also plug a lamp or other device into the surge protector to verify that it is on. If you are using a laptop, the battery may not be charged. Plug the AC adapter into the wall and then try to turn on the laptop. If it still doesn't start up, you may need to wait a few minutes and then try again.
"Non-System Disk or Disk Error" Message If you get this message when you boot up your computer, it usually means there is a CD, DVD, USB flash drive, or floppy disk in your computer, which is interfering with your computer's booting process. Remove the disk from the drive and restart the computer.
Figure 10. The Non-System Disk or Disk Error Message
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Windows Shutting Down Message Will Not Disappear Sometimes Windows will freeze during the shutdown process. If this happens, the Windows is Shutting Down message screen will stay active on your screen. To finish shutting down the computer, press and hold the power button for about 10 seconds, or until the computer turns off.
Figure 11. The Windows shutdown screen Computer Begins Randomly Rebooting or Crashing
Check for overheating. Make sure the vents in the case are not blocked. Confirm that there is good air flow around the computer. Update your antivirus software and scan for viruses.
Figure 12. Virus Scanning
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Problems with the Monitor and Speakers No Picture on the Monitor
Confirm the computer is turned on. Check the brightness control, located on your monitor or your keyboard, and make sure it is not set too low. Check the connections for the monitor and surge protector, and make sure the surge protector is turned on.
Figure 13. Cable plugged into monitor Monitor Goes Blank Periodically
You may have the screensaver enabled. If the screen saver is enabled, just move your mouse back and forth and your original screen will appear. You can change the screensaver settings by going to your Control Panel (or your System Preferences if you're using a Mac).
Figure 14. Opening the Control Panel 173
No Sound
Figure 15. Adjusting the sound volume on a Mac
Check the volume control on your computer. In Windows, the sound icon will usually be on the taskbar, and you can also access the sound options in the Control Panel. On Macs, the sound options are found at the top of the screen or in System Preferences. Most media programs (such as iTunes or Windows Media Player) have a volume control, which will need to be turned up. Make sure the speakers are turned on, if using external speakers. Make sure external speakers are connected to the correct audio port or a USB port. If your computer has color-coded ports, the audio output will usually be green. Connect headphones to the correct audio port and determine if sound is audible from the headphones.
Searching the web for a solution If you still haven't found a solution to your problem, you may need to ask someone else for help. Try searching the web for the problem that you're having, as other people may have had similar problems. Also, if you have a friend or family member who knows a lot about computers, they may be able to help you. Keep in mind that most computer problems have simple solutions, although it may take some time to find them. For very difficult problems, a more drastic solution may be required, such as reformatting your hard drive, reinstalling programs, or reinstalling your operating system. If you're not a computer expert, it's possible that you could make the situation worse, so it's best to consult a professional if you think a drastic solution is needed.
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Task. Examining the Motherboard in Detail 1. Look at the back of your computer. Without opening the case, list the ports that you believe come directly from the motherboard. 2. Remove the cover of the case. List the different expansion cards in the expansion slots. Was your guess correct about which ports come from the motherboard? 3. To expose the motherboard so you can identify its parts, remove all the expansion cards. 4. Draw a diagram of the motherboard and label these parts: Processor (Include the prominent label on the processor housing.) a) RAM (each DIMM slot) b) CMOS battery c) Expansion slots (Identify the slots as PCI, PCIe x1, PCIe x4, PCIe x16, and AGP.) Each port coming directly from the motherboard Power supply connections, SATA or IDE drive connectors and floppy drive connector 5. Draw a rectangle on the diagram to represent each bank of jumpers on the board. 6. What is the brand and model of the motherboard? 7. Locate the manufacturer’s Web site. If you can find the motherboard manual on the site, download it. 8. You can complete the following activity only if you have the documentation for the motherboard:
What do you do if a program on a PC is completely unresponsive? What about a program on a Mac? What should you do if you've tried everything and the problem still isn't fixed?
Diagnosing Power Supply Failure 175
Directions: Divide the class into five (5) groups. Choose a leader for each group. The group will prepares a chart and perform the tasks required by the Diagnostics Procedure of ATX Power Supply Failure. After the activity they will be graded through the given Performance Score Card below: PERFORMANCE SCORE CARD
Performance Criteria
Passed
Failed
1. The students clearly identified the problem and applied the possible solution correctly. 2. The students utilized actual tools/device in performing the actual usage of each tools and OHS was observed. 3. The students applied safety precautions during the Activity. 4. The activity gave students more critical thinking on the personal protective equipment. 5. The students cooperatively performed the activity.
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Tools for Testing Computer System Tools and equipment play vital roles in troubleshooting. They help the user determine the errors found in their computer hardware and network. Tools used to test hardware problems: 1. Screw drivers - are used for installing and removing screws in the computer unit.
Figure 16. Screw Drivers 2. Pliers and tweezers - are used for picking small parts in the computer unit.
Figure17. Pliers and Tweezers 3. Soldering iron- is primarily used for connecting terminals in the power supply and circuit board with the use of a soldering lead.
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Figure18. Soldering iron 4. Anti-static wrist strap, mat and spray- are used for eliminating electrostatic discharge in the work area.
Figure19. Anti- static wrist strap, mat and spray 5. Lens cleaner – a device used for cleaning optical media, such as DVD-ROMS and CD-writers.
Figure20. Lens Cleaner 6. Thermal paste-is a paste used for heat dissipation of the processor.
Figure21. Thermal Paste 178
Network Troubleshooting Tools 1. LAN Tester – is a device used for testing the network connection.
Figure22. LAN Tester 2. Crimping tool- is a device used to crimp the RJ45 connector to the UTP cable.
Figure23. Crimping Tool
Direction: Answer the following question. Write your answers on your notebook. Enumerate the six tools used for troubleshooting.
2. Enumerate the two network troubleshooting tools.
1. 2. 3. 4. 5. 6.
a.
.
b.
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Troubleshooting computer system network Causes of Network Trouble If a computer is unable to connect to a network or see other computers on a network, it may be necessary to troubleshoot the network. A network may not work because of any of the reasons below. 1. 2. 3. 4. 5.
Network card not properly connected. Bad network card drivers or software settings. Firewall preventing computers from seeing each other. Connection related issues. Bad network hardware.
Solution Because of the large variety of network configurations, operating systems, setup, etc... Not all of the below information may apply to your network or operating system. If your computer is connected to a company or large network, or you are not the administrator of the network, it is recommended that if you are unable to resolve your issues after following the below recommendations that you contact the network administrator or company representative. Verify connections / LEDs Verify that the network cable is properly connected to the back of the computer. In addition, when checking the connection of the network cable, ensure that the LEDs on the network are properly illuminated. For example, a network card with a solid green LED or light usually indicates that the card is either connected or receiving a signal. If, however, the card does not have any lights or has orange or red lights, it is possible that either the card is bad, the card is not connected properly, or that the card is not receiving a signal from the network. If you are on a small or local network and have the capability of checking a hub or switch, verify that the cables are properly connected and that the hub or switch has power.
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Adapter resources Ensure that if this is a new network card being installed into the computer that the card's resources are properly set and not conflicting with any hardware in the computer. Adapter functionality Verify that the network card is capable of detecting or seeing itself by using the ping command. Windows / MS-DOS users ping the computer from a MS-DOS prompt. Unix / Linux variant users ping the computer from the shell. To ping the card or the local host, type either ping 127.0.0.1 or ping local host This should show a listing of replies from the network card. If you receive an error or if the transmission failed, it is likely that either the network card is not physically installed into the computer correctly, or that the card is bad. Protocol Verify that the correct protocols are installed on the computer. Most networks today will utilize TCP/IP, but may also utilize or require IPX/SPX and NetBEUI. When the TCP/IP protocol is installed, unless a DNS server or other computer assigns the IPX address, the user must specify an IP address as well as a Subnet Mask. To do this, follow the instructions below. 1. Click Start / Settings / Control Panel 2. Double-click the Network icon 3. Within the configuration tab double-click the TCP/IP protocol icon. Note: Do not click on the PPP or Dial-Up adapter, click on the network card adapter. 4. In the TCP/IP properties click the IP address tab 5. Select the option to specify an IP address 6. Enter the IP address and Subnet Mask address, an example of such an address could be: IP Address: 102.55.92.1 Subnet Mask: 255.255.255.192 7. When specifying these values, the computers on the network must all have the same Subnet Mask and have a different IP Address. For example, when using the above values on one computer you would want to use an IP address of 102.55.92.2 on another computer and then specify the same Subnet Mask. Firewall If your computer network utilizes a firewall, ensure that all ports required are open. If possible, close the firewall software program or disconnect the computer from the firewall to ensure it is not causing the problem. 181
Additional time In some cases it may take a computer some additional time to detect or see the network. If after booting the computer you are unable to see the network, give the computer 2-3 minutes to detect the network. Windows users may also want to try pressing the F5 (refresh) key when in Network Neighborhood to refresh the network connections and possibly detect the network Additional troubleshooting If after following or verifying the above recommendations you are still unable to connect or see the network, attempt one or more of the below recommendations. If you have installed or are using TCP/IP as your protocol you can ping another computer's IP address to verify if the computer is able to send and receive data. To do this, Windows or MS-DOS users must be at a prompt and Linux / Unix variant users must open or be at a shell. Once at the prompt assuming, that the address of the computer you wish to ping is 102.55.92.2, you would type: ping 102.55.92.2 If you receive a response back from this address (and it is a different computer), this demonstrates that the computer is communicating over the network. If you are still unable to connect or see the network, it is possible that other issues may be present. Another method of determining network issues is to use the tracert command if you are a MS-DOS or Windows user or the trace route command if you are a Linux / Unix variant user. To use this command you must be at the command prompt or shell. Or trace route 102.55.92.2 This should begin listing the hops between the computer and network devices. When the connection fails, determine what device is causing the issue by reviewing the trace route listing.
Networking with DHCP Task: Setting up a local area network with a Dynamic Host Control Protocol (DHCP) server is easy! The DHCP server provides all the information your computer needs to get up and running on the network. Once connected, you will check network connectivity with the router and at least one other peer on the network.
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Procedure Getting connected 1. Before connecting your PC to the network, be sure the Windows XP operating system is running on your computer. You will use Windows XP sp2 throughout this activity. 2. Next, open a terminal window on your computer by clicking on Applications>Accessories->Terminal. 3. In the terminal window, type ipconfig and press Enter. a. How many network devices are listed in the output? Record their names in your worksheet. b. Is there an IPv4 address listed for any of the network devices? If so, record your IP address (es) in your worksheet. 4. Connect your computer to a network switch using a patch cable. Did you get a light on the switch? Record the port number you connected to in your worksheet. 5. Draw a diagram of the entire local area network in the space below, including the router, any switches or hubs, and all connected PCs. 6. Run ifconfig again. Do you see an IP address? If so, record it in your worksheet. 7. In the terminal window, type dhclient eth1 and press Enter. Describe what happens. Checking your connection 1. Check connectivity with the router with the ping command. Type ping -c4 10.0.1.1 and press Enter. Record the times listed in the last column of the output. What was the average round trip time (rtt) from your computer to the router and back? 2. Ask another group for their IP address. Check connectivity with that group's computer with ping. Run ping as shown above, substituting the new IP address for the one listed in the previous item. Record the times listed in the last column below. What was the average round trip time (rtt)? 3. When you have completed the activity, shut down your computer and return to your seat.
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Title: Networking with Static IPs Purpose: While setting up a network with a Dynamic Host Control Protocol (DHCP) server is very convenient, it is sometimes preferable to use static IP addresses. In this activity, you will join the network using an IP address and netmask provided by your instructor. Once connected, you will check network connectivity with at least one other peer on the network. Procedure Getting connected 1. Before connecting your PC to the network, be sure the windows Operating system is running on your computer. 2. When the boot process is completed, connect your computer to the network switch using a patch cable. Did you get a light? What port number did you connect to on the switch? 3. Draw a diagram of the entire network in the space below. 4. To configure your network settings, click System->Administration->Network. 5. In the Network settings window, make sure the Connections tab is selected. 6. Click on Wired connection, and then click the Properties button. 7. In the Interface properties window, change the Configuration setting to Static IP address. 8. Enter the IP address provided by your instructor in the IP address field. 9. Enter 10.0.1.0 in the Gateway address field. 10. Finally, enter 255.255.255.0 in the Subnet mask field. Click OK to close the Interface properties window. 11. Click OK to close the Network settings window.
Checking your connection 1. Open a terminal window on your computer, if one is not already open, by clicking Applications->Accessories->Terminal. 2. Type ipconfig and press Enter. Are your network setting correct? If not, repeat the steps 4–11 in the previous section
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3. Ask another group for their IP address. Check connectivity with that group's computer with ping. For example, ping -c4 10.0.1.200. Record the times listed in the last column below. What was the average round trip time? 4. Ask a second group for their IP address. Check connectivity to that group's computer with ping. Record the times listed in the last column below. What was the average round trip time? Evaluation: CRITERIA Passed
Failed
1. Sequence of steps in diagnosing is followed. 2. Safety precaution are observed. 3. Appropriate tools are used in diagnosing. 4. Diagnostic plan for troubleshooting is created. Remarks
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Computer System and Network Configurations Computer Networks Networks are collections of computers, software, and hardware that are all connected to help their users work together. A network connects computers by means of cabling systems, specialized software, and devices that manage data traffic. A network enables users to share files and resources, such as printers, as well as send messages electronically (e-mail) to each other. The most common networks are Local Area Networks or LANs for short. A LAN connects computers within a single geographical location, such as one office building, office suite, or home. By contrast, Wide Area Networks (WANs) span different cities or even countries, using phone lines or satellite links. Network System Configuration All networks go through roughly the same steps in terms of design, rollout, configuration, and management. Designing Your Network Plan on the design phase to take anywhere from one to three working days, depending on how much help you have ad how big your network is. Here are the key tasks:
Settle on a peer-to-peer network or a client/server network. Pick you network system software. Pick a network language. Figure out what hardware you need. Decide on what degree of information security you need. Choose software and hardware solutions to handle day-to-day management chores.
Rolling Out Your Network Rolling out your network requires the following steps:
Run and test network cables. 186
Install the server or servers if you’re setting up a client/server network. (If you are setting up a peer-to-peer network, you typically don’t have to worry about any dedicated servers.) Set up the workstation hardware. Plug in and cable the Network Interface Cards (NICs – these connect the network to the LAN). Install the hub or hubs (if you are using twisted-pair cable). Install printers. Load up the server software (the NOS, or Network Operating System) if your network is a client/server type. Install the workstation software. Install modem hardware for remote dial-up (if you want the users to be able to dial into the network). Install the programs you want to run (application software).
Configuring Your Network Network configuration means customizing the network for your own use.
Creating network accounts for your users (names, passwords, and groups). Creating areas on shared disk drives for users to share data files. Creating areas on shared disk drives for users to share programs (unless everyone runs programs from their own computer). Setting up print queues (the software that lets users share networked printers). Installing network support on user workstations, so they can "talk" to your network.
Managing Your Network The work you do right after your LAN is up and running and configured can save you huge amounts of time in the coming months.
Mapping your network for easier management and troubleshooting. Setting up appropriate security measures to protect against accidental and intentional harm. Tuning up your LAN so that you get the best possible speed from it. Creating company standards for adding hardware and software, so you don’t have nagging compatibility problems later. Putting backup systems in place so that you have copies of data and programs if your hardware fails. Installing some monitoring and diagnostic software so that you can check on your network’s health and get an early warning of impleading problems. Figuring out how you plan to handle troubleshooting – educating your LAN administrator, setting up a support contract with a software vendor, and so on. 187
Smooth Setup One key advantage of a peer-to-peer network is that it’s easy to setup. With the simplest sort of peer-to-peer network, you just use the built-in networking that comes with your operating system (Windows 98, Windows XP, Windows 7, Windows 8 and so on) and you have very little software to set up – even less if you have computers that have the operating system preinstalled, as most computers do these days. For Windows XP and Windows 7, the basic steps to setting up a peer-to-peer network are as follows: (Review for Cabling) UTP Cable A UTP cable (category 5) is one of the most popular LAN cables. This cable consists of 4 twisted pairs of metal wires (that means there are 8 wires in the cable). Adding RJ45 connectors at both ends of the UTP cable it becomes a LAN cable they usually use.
Preparation You need a UTP Cable, Crimping Tool, RJ45, and Cutter
Figure24. Materials for Cabling
Making Cable Follow the steps below.
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1. Remove the outmost vinyl shield for 12mm at one end of the cable (we call this side A-side). 2. Arrange the metal wires in parallel (refer the each section's wire arrangement table). Don't remove the shield of each metal line. 3. Insert the metal wires into RJ45 connector on keeping the metal wire arrangement. 4. Set the RJ45 connector (with the cable) on the pliers, and squeeze it tightly. 5. Make the other side of the cable (we call this side B-side) in the same way. 6. After you made it, you don't need to take care of the direction of the cable. (Any cable in this page is directionless --- that means you can set either end of the cable to either device.) How to see the wire arrangement Take the UTP cable with your left hand and a RJ45 connector with your right hand. Hold the RJ45 connector in the way you can see the contact metal face of the RJ45 connector.
The tables below are for the case where the UTP cable consists of green/green-white, orange/orange-white, blue/blue-white, brown/brown-white twisted pairs. 10 Base T / 100 Base T Straight 10BaseT and 100BaseT are most common mode of LAN. You can use UTP category-5 cable for both modes. (You can use UTP category-3 cable for 10BaseT, in which there are only 3 wires inside the cable.) A straight cable is used to connect a computer to a hub. You can use it to connect 2 hubs in the case one of the hubs has an uplink port (and you use normal port on the other hub).
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Pin ID side A
side B
1
orange-white orange-white
2
orange
3
green-white green-white
4
blue
blue
5
blue-white
blue-white
6
green
green
7
brown-white brown-white
8
brown
orange
brown
10 Base T / 100 Base T Cross A cross cable for 10BaseT and 100BaseT is used to connect 2 computers directly (with ONLY the UTP cable). It is also used when you connect 2 hubs with a normal port on both hubs. (In other words, the cross cable is used relatively in a rare case.) Pin ID side A
side B
1
orange-white green-white
2
orange
3
green-white orange-white
4
blue
blue
5
blue-white
blue-white
6
green
orange
7
brown-white brown-white
8
brown
green
brown
To create a peer network, you must have the following components:
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• A network interface or Local Area Network (LAN) adapter for each computer. The same manufacturer and model of network card is preferred. • Cabling that is supported by the network cards. • Windows XP or 7 drivers for the network cards. • A common network protocol. • A unique computer name for each computer.
Task. Creating Peer to Peer Network To create a peer network, follow these steps for each computer connected to the network: 1. Shut down the computer and install the network card and appropriate cabling for each computer. NOTE: For information about how to configure your network adapters and physically connect your computers, consult the documentation included with your network adapters or contact the manufacturer(s) of your network adapters. 2. Start Windows and install the network drivers. Windows may detect your network card and install the drivers when you start the computer. If the network card drivers are not included with Windows, follow the manufacturer's instructions about how to install the network drivers. 3. Choose a client and a common protocol for each computer. To do this, follow these steps: a. Click Start, point to Settings, click Control Panel, and then double-click Network. b. Click Add, click Client, and then click Add. c. In the Manufacturers box, click the appropriate manufacturer, click the appropriate client in the Network Clients box, and then click OK. d. Click Add, click Protocol, and then click Add.
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e. In the Manufacturers box, click the appropriate manufacturer, click the appropriate protocol in the Network Protocol box, and then click OK. 4. Configure a peer server. Each computer that is configured for File and Printer Sharing can act as a server. To configure a computer for File and Printer Sharing, use the following steps: a. Click Start, point to Settings, click Control Panel, and then double-click Network. b. Click File and Print Sharing, click one or both options to share files and printers, click OK, and then click OK again. c. Click Yes when you are prompted to restart your computer. 1. Give each computer a unique computer name. To do this, use the following steps: a. Click Start, point to Settings, click Control Panel, and then double-click Network. b. On the Identification tab, type a unique name in the Computer name box. c. Click OK, and then click Yes when you are prompted to restart your computer. NOTE: The computer name must be unique for each computer on the network and : should be no more than 15 characters in length. In small networks, the workgroup name should be the same for each computer so that all computers are visible in the same workgroup when browsing. You should not use spaces or the following characters in computer and workgroup names
Task. Setting Windows Network Connection Equipment, Tools and Materials Required: -
UTP cables 4 Computer units 1 hub
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Given the following materials, set-up a network connection on four computers. CRITERIA
Safety Precautions are observed.
All the UTP are properly connected to the computer and hub. Computers are properly connected and seen in the network. Proper boot-up and shutdown of the computer is observed.
1
2
3
4
5
Total:
Task 2. Using the Internet for Research In this project, you will learn how useful the Internet can be for a PC support technician. 1. Using your own or a lab computer pretend that the motherboard manual is not available and you need to replace a faulty processor. Identify the manufacturer and model of the mother board by looking for the manufacturer name and model number stamped on the board. Research the Web site for that manufacturer. Print the list of processors the board can support. 2 .Research the Web site for your motherboard and print the instructions for flashing BIOS. 3.Research the Abit Web site (www.abit.com.tw) and print a photograph of a motherboard that has a riser slot. Also print the photograph of the riser card that fits this slot. What is the function of the riser card?
More Security for Remote Desktop Task. Analyze the situations below and answer the questions that follows. When Jacob travels on company business, he finds it’s a great help to be able to access his office computer from anywhere on the road using Remote Desktop. However, he wants to make sure his office computer as well as the entire corporate network is as safe as possible. One way you can help Jacob add more security is to 193
change the port that Remote Desktop uses. Knowledgeable hackers know that Remote Desktop uses port 3389, but if you change this port to a secret port, hackers are less likely to find the open port. Search the Microsoft Knowledge Base articles (support.microsoft.com) for a way to change the port that Remote Desktop uses. Practice implementing this change by doing the following: 1. Set up Remote Desktop on a computer to be the host computer. Use another computer (the client computer) to create a Remote Desktop session to the host computer. Verify the session works by transferring files in both directions. 2. Next, change the port that Remote Desktop uses on the host computer to a secret port. Print a screen shot showing how you made the change. Use the client computer to create a Remote Desktop session to the host computer using the secret port. Print a screen shot showing how you made the connection using the secret port. Verify the session works by transferring files in both directions. 3. What secret port did you use?
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Lesson 3. INSPECT AND TEST THE CONFIGURED COMPUTER SYSTEMS AND NETWORKS
General Safety Tips and Reminders Observe good housekeeping in the area of the machines during and after maintenance. Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine.
Dress for the Job Keep your tool case away from walk areas so that other people will not trip over it. Do not wear loose clothing that can be trapped in the moving parts of a machine. Ensure that your sleeves are fastened or rolled up above your elbows. If your hair is long, use hair net or hair cap. Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip, approximately three (3) inches from the end. Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners. Remember: Metal objects are good conductors
After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn out or defective. Finally, reinstall all covers correctly before returning the unit to the customers. Electrical safety Electric current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect the attached power cords, telecommunications systems, networks and modems before you open
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the server/workstation covers, unless instructed otherwise in the installation and configuration procedure. Precautions Disconnect all power before: Performing a mechanical inspection Working near power supplies Removing or installing main units Before starting work on the machine, unplug the power cord. Never assume that power has been disconnected from a circuit. First, check that it has been powered-off. Always look carefully for possible hazards in your work Moist floors Non-grounded power extension cables Power surges. If an electrical accident occurs: Switch off power Send another person to get medical aid Safety Inspection Guide 1. These steps will help you identify potentially unsafe conditions on electrical products: Check exterior covers for damage (loose, broken, or sharp edges) Power-off computer. Disconnect the power cord. The power cord should be the appropriate type. Insulation on the power cord must not be frayed or worn out. Remove the cover. Check for any obvious alteration. Use good judgment as to the safety of any alterations. Check for worn out, frayed or pinched cables. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with. Accident Reporting Policy and Procedure There must be a process put in place to report accidents, incidents or near misses for immediate action and to help track causes. The organization needs to identify what needs to be reported, to whom it is to be reported, and how to report it, then put this process into a written procedure. For example: Any accident, incident, or "near miss," no matter how slight the injury or damage, must be reported to the department supervisor immediately for appropriate action.
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The supervisor is responsible for taking appropriate follow-up action, including getting medical attention for the injured, completing an investigation report and recommending or implementing appropriate corrective actions. The primary purpose of the accident investigation is to identify the cause(s) of the accident, incident or "near miss" and take action to prevent a similar occurrence in the future. In some instances, an employee's or volunteer's failure to follow recognized safety procedures requires disciplinary action to protect co-workers. Remember: One person's actions can jeopardize the safety of others in the workplace. Accident Reporting Policy Sample Approved by Chairman: Date: 1. Purpose [complies with legislation, ensure the necessary action to prevent any recurrence and to enable the organization to maintain proper records. 2. Scope [accident, incident, near-miss; employee, volunteer, anyone on site or involved in organization-sponsored activities] 3. Definitions [of terms] 4. Accident Reporting [timeline, to whom, how (phone, e-mail, fax) •\ OSHA, NIOSH?] 5. Absence resulting from an accident [who to report to, Return-to work] 6. Accident Investigation [who investigates, what to do with resulting recommendations] 7. Forms [Names, where to find them] 8. Reportable Diseases [communicable diseases listed where?] Accident Investigation Procedures The senior staff member available at the accident scene or the first member notified should complete the appropriate investigation reporting form (accident, incident, near miss). The completed form should be given to the organization's safety committee, which will forward a copy of the report to the safety coordinator for review. When an employee or volunteer is injured: 1. 2. 3. 4.
Get the person professional medical attention. Protect others. Minimize property damage. Stabilize the situation. 197
5. Conduct an investigation. General guidelines for investigating accidents:
Go to the scene of the accident while the facts are fresh. Inspect and record any changed physical characteristics or conditions of the accident site Preserve any physical evidence, such as potentially defective equipment. Take photos to help preserve the scene (i.e., puddles on the floor, overturned storage shelves and spilled contents). Talk to the injured person, if possible. Talk to any eyewitnesses. Ask simple open-ended questions, one question at a time, and attempt to have events related chronologically to ensure thorough coverage. Distinguish a person's actual knowledge from hearsay. Ask when, where, who, how, and what was said or done. Avoid opinions, judgments or conclusions and be as objective as possible. Avoid commenting on the information gathered except to confirm your understanding or to clarify. Stress getting the facts. Do not comment on liability or fault during the investigation. Listen for clues in the conversation around you. Unsolicited comments often have merit. Review and finalize any notes immediately upon completion of your inspection and any interview or other communication with those involved. Fill out the appropriate accident, incident or near-miss form, giving an accurate account of the facts. Send the form to the safety coordinator and safety committee for their review.
Accident reports Forms are used to give specific details with regards to the accidents happened in the laboratory during experiments. Accident reports contain the following details:
Name of the person injured Date and time of the accident Type of injury First aid given Action taken to prevent further accidents
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Task. Accomplish the sample Accident report sample form Date: Form No:
Accident Report Form Rm. No:
Name:
Type of Injury
Yr/Sec:
Cause of Injury
Remedy
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Replacing different Components Computer Parts Replacement When replacing computer parts and peripherals, you need to consider the following factors: 1. Compatibility of the component or part 2. Consider the component specification 3. Components form factor Compatibility of the Component When replacing computer parts you should check if it is compatible with your unit. Double check on your computer manual if the component you are replacing is compatible or not with the unit because this may lead to system crash. Component Specification This focuses on the specification of the component. Check if the voltage rating, current rating, memory size and frequency matches your computer unit. Form factor The components’ manufacturer should be considered. Check if the unit you are trying to repair or upgrade is generic or branded units. Branded units have their own set of components compatible only to their units, while genetic types can be used only to generic type of units. List of Components Commonly Replaced in a Computer System Note: Please refer to the Video for Proper Replacement of the components or parts of the computer. Memory-is technically any form of electronic storage; it is used most often to identify fast, temporary forms of storage. It is commonly called RAM (Random Access Memory).
Figure25. Memory 200
Video Cards-also referred to as a graphics accelerator, is an item of personal computer hardware whose function is to generate and output images to a display.
Figure26. Video Card
Network Interface Card – is also known as LAN card. A PC interface to network cabling. It is a piece of computer hardware designed to allow computers to communicate over a computer network
Figure27. LAN Card
Hard disk drive – is a fixed computer storage medium
Figure27. LAN Card
Motherboard – is also known as the mainboard. It contains circuits that perform various functions.
Figure28. Motherboard Processor – is also known as CPU or the Central Processing unit Figure28. CPU
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CMOS Battery-Refers to a small memory on PC motherboards that is used to store BIOS settings.
Figure29. CMOS Battery
CD/DVD Drive- A DVD is an optical disc storage media format, invented and developed by Philips, Sony, Toshiba and Panasonic in 1995
Figure30. CD/DVD
Sound card - is an internal computer expansion card that facilitates the input and output of audio signals
Figure31. Sound Card
Directions: Write your answer on your notebook 1. Give the functions of each component. 1. 2. 3. 4. 5.
Memory Video card NIC Motherboard HDD
2. Factors to consider when replacing a component. 1._____________________ 2._____________________ 3._____________________
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Upgrading Your Computer Components To upgrade means to change some parts with faster and better performing ones. These parts may even cost less and more powerful. Commonly Upgraded Computer Parts 1. Monitors- replace old CRT monitors to new LCD or LED monitors.
2. Optical drives- old CD-ROMs drives are commonly replaced with DVD-ROM and DVD writers.
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Hard Drives- small capacity hard drives are replaced with faster and high capacity hard drives.
Keyboards and mouse- keyboards and mouse are commonly replaced with optical mouse and wireless keyboards.
RAM (Random Access Memory)- upgrading the computer’s memory speeds up the performance of the computer
or RAM
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Video cards- upgrade computer’s graphics card to improve the computer performance in terms of graphics and games.
Processors- replacing the processors increase the data processing speed.
Modem- installing a modem enables your computer to connect to the internet.
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How to Speed up the Computer 1. Defragmenter utility: Automatically analyzes the empty disk space on the hard disk and defrag all scattered files.
Figure31. Defragmenter Utility 2. Shutdown Unnecessary programs: Close all unwanted programs at the Windows start up and this will automatically increase the windows loading time and speed of the computer will also be increased. 3. Increased memory: Increasing the memory in the system will result to exceptional speed of your computer.
Figure32. Increasing the memory
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4. Disk Cleanup: You can delete unwanted programs and files from your computer and this will be helpful in increasing the speed.
Figure33. Disk Cleanup 5. Empty Recycle Bin: Delete all the files and folders from the recycle bin and you will get the space of C drive for reusability.
Figure34. Emptying the recycle bin Memory Upgrade To make your computer faster, you can upgrade its memory. Here are the steps in upgrading your computer’s memory 1. Remove the memory modules from the slot.
Figure34. Removing memory module from the slot
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2. In Fig 35 the notches we have marked as A are used for the ejector clip on the DIMM slot. The notches we have marked as B are used to align the memory module with the DIMM slot key C as shown in Figure 36.
Figure 35. Notch A
In Figure 36 you can see the ejector clips (D), using your finger, push these into the down position as shown in Figure 36 this allows the memory to be inserted. Figure 36. DIMM Slot
3. Now you are ready to install the module, ensuring the notches line up with the keys gently but firmly push the memory into the slot until it is seated fully(see Fig 37 the ejector clips should rise to the vertical position as shown in Fig 38). Figure 37. Ejector clips 4. Now your memory is installed. Be sure you have not loosened any cables while working and also ensure that the memory module is fully seated and the ejector clips are in the vertical position. Figure 38. Ejector clips in vertical position
Video card Upgrade Installing the video card Next, take the video card (hold it by the edges) and line it up with the slot paying careful attention to the alignment notch. When it is aligned correctly, press gently but firmly until the card is seated fully and evenly into the slot (see fig 39).
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Figure39. Video card seated fully and evenly on a slot
When you are happy that the card is firmly in place, insert the fixing screw (fig 40) and check to make sure you have not loosened anything during installation. Replace the case cover and reconnect the mains power.
Figure40. Inserting fixing screw When you reboot your machine Windows (or other OS) should find the card automatically, it may then ask you to insert the disk/CD that came with your video card, insert the CD and follow the on-screen instructions to install the video card driver. Hard Drive Upgrade The first thing to do (after removing the case covers) is to locate the drive bay where the hard drive will go (see fig 41 below).
Figure41. Locate the drive bay
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The next step is to attach the IDE and power cables. In figure 42 below you can see a standard IDE Cable, note there are three (3) connections (notice the difference in distance between the connectors). Connection A plugs into the motherboard and then the slave and master connections are used for IDE devices such as hard drives, if you are only installing one drive or the new drive is to be the master then use the master connector, if the drive is to be the slave then use the slave connector. The IDE cable will be marked down one side with a red or black strip, this denotes Pin 1, match this with the Pin 1 indicator on the back of the hard drive. The power cable you will find in your case is attached to your power supply; you can see an example below in figure 43.
Figure42. Standard IDE Cable
Figure43. Power Cable
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Basic Network Errors If your network connection is not configured properly or suffers a technical failure, you will often see some error message generated and displayed on your screen. These messages give helpful clues to the nature of the issue. Use this list of the common network-related error messages to help troubleshoot and fix networking problems.
Network Problem error Messages Network problem error message 1 Read the message in the box. Box running software 14.8 and above:
Box running software 14.7 and below:
No network adapter. (N01)
A network adapter was not detected. (N01)
Please make sure that your network adapter is securely plugged into a USB port on the back of the box.
Please make sure that your network adapter is securely plugged into a USB port on the back of the box.
Possible solution for error message 1 Quick Steps
1. If you have a TiVo Wireless G or N Adapter: Remove the adapter from the TiVo box for 15 – 60 seconds and reconnect. Then force a connection to the TiVo service. 2. Try another USB port (when applicable). 3. If these steps have not resolved your issue, see Detailed Steps below for additional assistance.
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Network problem error message 2 Read the message in the box. Box running software 14.8 and above: Box running software 14.7 and below: Problem with router. (N03) It might be temporarily out of IP addresses. Wait a few minutes, and then try connecting again. If the DHCP server is part of your home network, try increasing the number of IP addresses it can assign.
The DHCP server was unable to supply an IP address.(N03) It might be temporarily out of IP addresses. Wait a few minutes, and then try connecting again. If the DHCP server is part of your home network, try increasing the number of IP addresses it can assign.
Quick Steps
Possible solution for error message 2 1. Power cycle your network, then force a connection to the TiVo service. 2. Renew the DHCP lease on your router. NOTE: Please contact your router manufacturer if you are unsure how to do this. 3. If these steps have not resolved your issue, see Detailed Steps below for additional assistance.
Network problem error message 3 Read the message in the box: Box running software 14.8 and above: Box running software 14.7 and below: Problem with network settings. (N05) Change your network settings to use a different (and unused) IP address.
The specified IP address () is already in use by another device on the network. (N05) Change your network settings to use a different (and unused) IP address.
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Quick Steps
Possible solution for error message 3 1. If the box is using a static IP address, then it will need to be changed. See How to configure network settings on your TiVo box for instructions. 2. Power cycle your network devices, then force a connection to the TiVo service. 3. Renew the DHCP lease on your router. NOTE: Please contact your router manufacturer if you are unsure how to do this.
Network problem error message 4 Read the message in the box: Box running software 14.8 and above: Wireless Network Not Found. (N06)
Box running software 14.7 and below: Could not connect to the wireless network (). (N06)
Quick Steps
Possible solution for error message 4 1. Verify your TiVo box has the latest software version to support the encryption used by your router. 2. Make sure your wireless network is operational and you have sufficient signal strength where the box is located. See How to configure network settings on your TiVo box for instructions. 3. Verify you entered the correct the correct name of your network and/or the correct encryption key or password. 4. Check for possible interference sources nearby, such as microwave ovens, cordless phones, etc. 5. Power cycle your network devices, then force a connection to the TiVo service. 6. Move your wireless adapter to improve signal strength. 7. Contact your router manufacturer to determine whether you need to update your router firmware. 8. If these steps have not resolved your issue, see Detailed Steps below for additional assistance.
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Network problem error message 8 Read the message in the box: Box running software 14.8 and above: Box running software 14.7 and below: Adapter not set up. (N08) Select Change network settings to begin setting up your network adapter.
Your network adapter has not been set up for use with the box. (N08) Select Change network settings to begin setting up your network adapter.
Quick Steps
Possible solution for error message 8 1. TiVo Wireless N adapter: Verify that your adapter has been set up properly. Please see TiVo Wireless N Adapter Setup for instructions. 2. Verify you entered the correct name of your network and/or the correct encryption key or password. 3. Verify your wireless adapter is compatible with your TiVo box. 4. Try another USB port (when applicable). 5. If these steps have not resolved your issue, see Detailed Steps below for additional assistance.
Common Network Errors and Solutions Network Errors
Network problem is not accessible Message: "....is not accessible. You may not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions. The semaphore timeout period has expired."
Possible Solutions
1. 2.
3. 4. 5. 6. 7. 8. 9.
10.
11.
Make sure no any firewall running. Make sure you have created the same workgroup, and the same username for logging on a remote computer. Check user's rights. You may want to enable guest account on windows. if you are using simple file sharing, you may try to disable it and re-share the drive manually. If it is mixed OS network, enable NetBIOS over TCP/IP. Make sure the Computer Browser service is started if all computers are w2k/xp. Stop Computer Browser service on wwin9x, ME and NT if this is a mixed OS network. Cache credential by using net use \\computername\share /user:username command (it is better to have the username logon shared computer). If you have tried enabling netbios over tcp/ip but doesn't work, you may try to load netbeui (loading netbeui may slow your network). Make sure the server service is running. 214
12.
Still need help, contact consultant at http://hidev.com/contactus.asp for the tech support.
Network problem not available. The server is not configured for transactions"
1. Type command "net share" on the shared computer. If there is not a share named "IPC$" in the share list, use the command "net share ipc$" to create it.
An extended error has occurred" or "Access Denied" Symptoms: When mapping a network drive using net use or using the net view command to view a different computer in the domain, you may receive: "An extended error has occurred" or "Access Denied" error messages.
1. This issue may occur if the workstation doesn't synchronize the time with the server. After verifying that basic network connectivity exists, you can force time synchronization on the client computer manually. To do this, run net time /domain /set command. 2. Make sure you have granted enough licenses for clients accessing.
“Computer name is not accessible. No permission to access the resources"
1. Are you sure the logon user has permission to the shared folder? 2. Have you tried to logon using the same user name and password of the accessed computer? 3. The last and risky one, if you enable guest account in computer, can you access now?
"Multiple connections to the server or shared resource are not allowed"
1. Try using net use /d from a command to clear all your mapped connections before joining the domain. You can also disconnect the mapped drive in Windows Explorer by right-click the mapped drive and select disconnection.
Symptom: when attempting to join a domain, you may receive "Multiple connections to the server or shared resource are not allowed. Please disconnect all previous connections to the server or shared resource and try again."
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"Network path not found" in a domain network 1 SYMPTOMS: When trying to join a domain by using he NetBIOS domain name, you are successful but not the FQDN and you may receive one of the following error messages:
1. This issue may occur if the TCP/IP NetBIOS Helper Service is not running on the client computer. To start the TCP/IP NetBIOS Helper Service, go to MMS>Services, double-click TCP/IP NetBIOS Helper Service.
1) The following error occurred attempting to join domain "example.com": The network location cannot be reached. For information about network troubleshooting, see Windows Help. 2) Network path not found. "Network path not found" in a domain network 2
1. You can find some computer browser errors on the DNS server. Disable one of two NICs will work. More resolutions can be found in browser Issue page.
"Network path not found" in a workgroup network - error 53
1. Make sure that File and Printer Sharing is enabled on the shared computer. Make sure that shared machine has something shared. 2. Make sure that you have created the same workgroup and logon the same username Make sure that you have enabled NetBIOS over TCP/IP if this is a mixed OS network.
"Not accessible. You may not have permission to use this network resource"
1. Enable NetBIOS over TCP/IP on one or more computers in the workgroup. To do that, go to properties of Local Area Connection>properties of Internet Protocol (TCP/IP)>General> Advanced>WINS, check Ena ble NetBIOS over TCP/IP (If you have a DHCPassigned IP address, select Use NetBIOS setting from the DHCP server ).
Symptom: Your peerto-peer network, may receive the following
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error when you doubleclick My Network Places/Computers Near Me: is not accessible. You may not have permission to use this network resource.
2. Make sure the Computer Browser service is started.
"Not enough server storage is available to process this command." error.
1. The registry value IRPstackSize may be not explicitly present. To increase the value of the parameter, go to the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentContro lSet\Services\ LanmanServer\Parameters. If the key is not present, choose Add Value in the Registry Editor. The Value Name should be IRPStackSize and the Data Type is REG_DWORD. 2. Remove any unnecessary entries from this value in the registry, HKEY_LOCAL_MACHINE\System\CurrentControlS et\Services\LanmanServer\Parameters\NullSession Pipes. 3. Disable Norton antivirus to see if that will fix the problem.
SYMPTOMS: When accessing shares on a server from a client, you may receive "Not enough server storage is available to process this command." error. You may receive this message and Event ID: 2011 after you install Norton Antivirus for Windows.
"No logon server available" Symptoms: you can ping the server by ip and name but can't map the shared drive by using net use \\ip or \\servern ame. If you try, you may receive the "No logon server available".
Still need help, contact consultant at http://hide v.com/contactus.asp for the tech support.
This sounds like cache credential issue. 1. Make sure the computers in the same network, the same workgroup/domain and have created the same username. 2. Use net use \\servername\sharename password /user: username to cache the credential.
1. Disable ICF if you don't need it. 2. Open port # (UDP and TCP) from 135 through 139 and/or 445. to do this, go to the properties of the connection>Advanced>ICF>Settings>Services. For Microsoft file sharing SMB: add (UDP and TCP) 217
"System error 6118 has occurred. The list of servers for this workgroup is not currently available." Symptoms: When using the net view \\computername comm and, you receive the following error message: System error 6118 has occurred. The list of servers for this workgroup is not currently available.
"The password incorrect. Try again"
is
"There are no entries on the list" Symptom: when using net view \\remotecomputer command, you may receive "There are no entries on the list". And you may have a problem to access the remote computer.
"Unable to access Computers near Me" or "Workgroup is not accessible" errors
ports from 135 through 139. For direct-hosted SMB traffic without network basic input/output system (NetBIOS) uses port (TCP and UDP) 445. Note: the external and internal port numbers should be identical.
1. You need to setup every user that needs access to the shared folder on every computer they have to connect to. Then give the proper user proper permission to the shared folder. 2. Logon the same user and password. 3. As always, you can try to enable a guest account on the accessed machine.
1. If there are no file or print shares on the computer, the net view command displays a "There are no entries in the list" message. So, make sure there are file or print shares on the computer. Or to use net share command to check sharing status. 2. Make sure no firewall running because the firewall may block sharing.
1. NetBIOS over TCP/IP. To do that, go to the properties of TCP/IP>Advanced>WINS. If you are using a static Internet Protocol (IP) address, click 2. Enable NetBIOS over TCP/IP. If you have a DHCPassigned IP address, click Use NetBIOS setting from the DHCP server. No Master Browser or too many browsers may cause this issue. Check Browser issue.
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"Unable to Browse Network" Symptom: When you attempt to browse your network by opening Entire Network in My Network Places/Network Neighborhood, you may receive the following error message: Unable to Browse Network.
1. 2. 3. 4.
Have you loaded the NIC or is it working? Have you loaded common protocol, TCP/IP? Does the Computer browser work? Have you enable file and printer sharing in the accessed computer? 5. Is the workstation service running?
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Award BIOS / CMOS Setup This is the BIOS setup for Award BIOS v6.00PG. If you have a different version of the Award BIOS there would be a lot of similarities. If your BIOS are AMI or Phoenix then the common BIOS features would have some similarities. Whatever BIOS you have, this setup guide should give you an idea about how to setup BIOS. Please note that setting up BIOS incorrectly could cause system malfunction, therefore it is recommended that you also follow the BIOS guide provided on your motherboard manual. If you decide to make changes to certain options it is safer to make a note of what you have changed. Then restart the system to see how it performs. If the system behaves abnormally or becomes unstable you can revert back to your previous settings. Soft menu III Soft menu III is where you can setup up the CPU without setting jumpers on the motherboard. You can setup the CPU simply by selecting the speed i.e. Pentium III 750 from the list. This ensures that the CPU bus, multiplier, voltage etc, is correctly set for that particular CPU. However you can manually setup each feature if required. Once you have finished with the setup press ESC to return the previous menu.
Figure44. BIOS CMOS Setup Utility
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Standard CMOS Features Here you can setup the basic BIOS features such as date, time, type of floppy etc. Use the arrow keys to move around and press enter to select the required option. You can specify what IDE devices you have such as Hard drive, CD-ROM, ZIP drive etc. The easiest way to setup the IDE devices is by leaving it set to auto. This allows the BIOS to detect the devices automatically so you don't have to do it manually. At the bottom, it also displays the total memory in your system.
Figure45. Standard CMOS Feature Advanced BIOS Features As you can see from figure 3, there are numerous advance settings which you can select if required. For most cases leaving the default setting should be adequate. As you can see the first boot device is set to floppy. This ensures that the floppy disk is read first when the system boots, and therefore can boot from windows boot disk. The second boot device is the Hard disk and third is set to LS120. If you want to boot from a bootable CD then you can set the third boot device to CD/DVD-ROM.
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Figure46. Advance Bios Feature Advanced Chipset Features Here you can setup the contents of the chipset buffers. It is closely related to the hardware and is therefore recommended that you leave the default setting unless you know what you are doing. Having an incorrect setting can make your system unstable. If you know that your SDRAM can handle CAS 2, then making changes can speed up the memory timing. If you have 128MB SDRAM then the maximum amount of memory the AGP card can use is 128MB.
Figure47. Advance Bios Chipset
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Integrated Peripherals This menu allows you to change the various I/O devices such as IDE controllers, serial ports, parallel port, keyboard etc. You can make changes as necessary.
Figure48. Integrated Peripherals Power Management Setup The power management allows you to setup various power saving features, when the PC is in standby or suspend mode.
Figure49. Power Management setup
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PnP/PCI Configurations This menu allows you to configure your PCI slots. You can assign IRQ's for various PCI slots. It is recommended that you leave the default settings as it can get a bit complicated messing around with IRQ's
Figure50. Pnp /PCI Configurations PC Health Status This menu displays the current CPU temperature, the fan speeds, voltages etc. You can set the warning temperature which will trigger an alarm if the CPU exceeds the specified temperature.
Figure51. PC Health Status 224
Load Fail-Safe Defaults If you made changes to the BIOS and your system becomes unstable as a result, you can change it back to default. However if you made many changes and don't know which one is causing the problem, your best bet is to choose the option "Load Fail Safe Mode Defaults" from the BIOS menu. This uses a minimal performance setting, but the system would run in a stable way. From the dialog box Choose "Y" followed by enter to load Fail-Safe Defaults.
Figure52. Load fail-safe defaults
Load Optimized Defaults Like the Fail-Safe mode above, this option loads the BIOS default settings, but runs the system at optimal performance. From the dialog box Choose "Y" followed by enter to load Optimized Defaults.
Figure53. Load optimized Set Password To password protect your BIOS you can specify a password. Make sure you don't forget the password or you cannot access the BIOS. The only way you can access the BIOS is by resetting it using the reset jumper on the motherboard.
Figure54. Load optimized
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Save and Exit Setup To save any changes you made to the BIOS you must choose this option. From the dialog box choose "Y".
Figure55. Save to CMOS and EXIT Exit without Saving If you don't want to save changes made to the BIOS, choose "N" from the dialog box.
Figure56. Quit Without Saving
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Task 1. The BIOS settings in the CMOS memory have become corrupted or damaged Task: Check the CMOS battery and replace if needed. Procedure: 1. Power on your desktop pc and wait for the POST 2. Read the Power on self-test report and do the necessary procedure to solve the problem. 3. Boot up your pc into BIOS setup. 4. Look for incorrect or changing time settings. A noticeable symptom is an invalid time showing within the operating system. This symptom is confirmed if time sets after the computer system is restarted. Under these circumstances, the CMOS battery should be replaced. Procedure: On how to replace the CMOS Battery. 1. Locate your CMOS battery 2. Obtain battery information 3. Removing the battery 4. Insert the new battery 5. Enter CMOS values You will be assessed using the following criteria Evaluation CRITERIA Passed
Failed
1. Sequence of steps in CMOS diagnosing procedure is followed. 2. Sequence of steps for replacing CMOS battery is followed carefully. 3. Safety precaution is observed.
Remarks
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Practicing TCP/IP Networking Skills While connected to the Internet or another TCP/IP network, answer these questions: 1. What is your current IP address? 2. Release and renew your IP address. Now what is your IP address? 3. Are you using dynamic or static IP addressing? How do you know? 4. What is your adapter address for this connection? 5. What is your default gateway IP address? 6. What response do you get when you ping the default gateway?
Task 2. Investigating Verizon FiOS Verizon (www.verizon.com) is currently offering an alternative to DSL and cable modem for broadband Internet access. FiOS is a fiber-optic Internet service that uses fiber-optic cable all the way to your house for both your residential telephone service and Internet access. Search the Web for answers to these questions about FiOS: 1. Give a brief description of FiOS and how it is used for Internet access. 2. What downstream and upstream speeds can FiOS support? 3. When using FiOS, does your telephone voice communication share the fiber-optic cable with Internet data? 4. What does Verizon say about FiOS cabling used for television? 5.Is FiOS available in your area?
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Hardware Upgrade Tool, Materials, and Equipment Tools Philip Screw Deriver Anti-static wrist strap Anti-static mat Equipment Network Card Network Card Upgrade Given the tools and materials, upgrade your computer by installing a network card.
You will be assessed using the following criteria Evaluation CRITERIA Passed
Failed
1. Safety precautions are observed. 2. Appropriate tools are used in upgrading
3. Necessary improvement and adjustment are done in terms up upgrading. Remarks
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LESSON 4: TEST SYSTEMS AND NETWORKS
Testing Computer System Is your PC healthy? Don't be too sure. Think back to when you heard a kerklunk sound coming from the hard drive. Or maybe you remember the last time your Internet connection was down. The best way to find out what's wrong is to take a proactive approach: Check under your PC's hood with the following mostly free diagnostic tools, and see if anything is amiss--before disaster strikes. Three Major Components of Computer System:
Hardware Software Firmware
Test Your Hardware Checking your computer hardware and its peripherals 1. Computer Monitor and its peripherals Monitor and interface cables Video card Monitor power cable
Interface cables
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Video cards
Monitor power cable
2. Keyboard and Mouse
Keyboard connector Mouse Connector
Keyboard connecter
Mouse connector
3. I/O port and devices
Connection between the I/O port and the peripheral device A faulty cable between the I/O port and the peripheral device A faulty peripheral device Incorrect settings in the System Setup program Incorrect settings in the system's configuration files Faulty I/O port logic on the system board
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I/O circuit board
Parallell ports
4. Power supply
Power cord Fuse
Fuse
Power plug
Power supply
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Testing Your Software Check the different software installed in the computer. 1. Operating system
Run live updates for your operating systems to get the latest patches and protection for your OS. Run registry scanners to check the OS registry configuration
2. Application Software
Check for live updates
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3. Anti-virus software
Run anti-virus program Check for virus signature updates Check for spyware updates
Test Your Firmware Firmware- is a combination of hardware and software integrated on a chip. To test the firmware Check for the correct configuration can accomplish this by configuring the BIOS in the computer
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Sample Accomplishment Report Form
Task to be accomplished Hardware component testing
Status Working properly
Software testing
Not working properly
Status Working properly
Not working properly
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Error Beep codes When a PC is first switched on or reset it performs a special diagnostic test called a POST (Power-On Self Test), to check all components in the PC, the POST program sends out a signal to each device initializing each device's built-in self test procedure. The POST test is a two stage process: 1. First, it will check all the basic components including among other things the system clock, the processor, RAM, the keyboard controller and the Video 2. After the video has been tested the BIOS will then indicate any errors encountered by displaying either a numeric code or a text message on the screen. When a device fails the first part of the POST, the BIOS will send a series of beeps from the PC's speaker (internal) to inform the PC user that there is a problem these beeps are coded allowing the user to diagnose the troublesome component. When the POST has been completed successfully, the PC will make a short beep to let the user know everything is as it should be. Three (3) major brands of BIOS chip 1. AWARD BIOS 2. Phoenix BIOS 3. AMI BIOS
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Each type of BIOS chip has it own error code AMI BIOS ERROR BEEP CODES Indicator
Error message
Solution
Check memory 1 Beep
Memory refresh failure Memory parity error Check memory
2 Beeps
Memory read/write error Check memory
3 Beeps
Motherboard timer not functioning Processor error Gate A20/keyboard controller failure
Replace motherboard
5Beeps
Processor exception interrupt
Replace motherboard
6 Beeps
Display memory read/write failure
4Beeps
Replace processor
Replace processor
ROM checksum error
Replace video card
CMOS shutdown read/write error
Replace BIOS chip/Motherboard
Bad cache memory
Replace BIOS chip/Motherboard
7 Beeps
8 Beeps
9 Beeps 10 Beeps
Replace cache memory
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Phoenix BIOS ERROR BEEP CODES Phoenix BIOS beep codes are a series of beeps separated by a pause, for example: beep --- beep beep --- beep --- beep beep would be 1-2-1-2
Indicator
1-1-4-1
Error message
Cache error
Solution
Check cache memory Check BIOS ROM
1-2-2-3
BIOS ROM Checksum
DRAM test rate
Check DRAM
Keyboard controller test
Check keyboard controller
RAM failure
Check memory
1-3-1-1
1-3-1-3
Check memory
1-3-4-1 RAM failure data bits of low memory bus
1-3-4-3
RAM failure data bits of high memory bus
1-4-1-1
ROM copyright notice
2-1-2-3
Test for unexpected interrupt
Check memory
Check ROM
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AWARD BIOS ERROR BEEP CODES Indicator
One long beep and two short beeps
Two short beeps
Error message
Solution
Video error
Replace video card
Non-fatal error
Reset RAM, Check other components.
Directions: Answer the following questions and place your answers on your answer sheet.
1. What does the acronym POST stand for? 2. What are the Three Major Brand of BIOS chips 3. Identify the following error codes:
1-2-2-3 1-3-4-1 2-1-2-3 1-1-4-1 1-3-1-1
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Directions: Test I. Identify the tools presented below and write your answer in separate paper.
1.
2.
3.
4.
5.
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Directions: Test II. List down at list Five (5) common problem and solution. Use a separate sheet of paper if needed.
Task 1.Understanding Hardware Documentation Obtain the manual for the motherboard for your PC. (If you cannot find the manual, trydownloading it from the motherboard manufacturer’s Web site.) Answer these questions: 1.What processors does the board support? 2.What type of RAM does the board support? 3.What is the maximum RAM the board can hold? 4.If the board has a PCIe slot, what version of PCIe does the board use? 5.What chipset does the board use?
Task 2. Teaching Yourself About Windows Meeting Space Using the Windows Help and Support window, Search for information on Windows Meeting Space. Describe the tool. When would you want to use it? What can you do with Windows Meeting Space? Set up and test the tool with a friend on a network connection.
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Task 1. Testing a Computer Unit Equipment, Tools, and Materials: Tools Multi-tester Screw driver Equipment Computer unit Monitor Keyboard and mouse Power cables
Materials Bond paper Ruler and Pencil Hardware Testing and Documentation Directions: Test the following computer peripherals and equipment with the use of the tools provider. Document your testing with the use of an accomplishment form.
Assigned Task Hardware component testing
Condition Working properly
Not working properly
Computer monitor Power supply
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Keyboard
Mouse
You will be assessed using the following criteria
CRITERIA
Rating
1. Sequence of steps in testing is followed.
20%
2. Safety precautions are observed.
20%
3. Appropriate tools are used in testing.
30%
4. An accomplishment report is created.
30%
Total 100%
Task 2.Identify Error codes Equipment, Tools, and Materials: Tools Screw drivers Anti-static wrist strap Equipment Computer unit Memory Error Codes
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Given the tools and equipment, identify the memory error code by removing the module in the computer unit You will be assessed using the following criteria Evaluation: CRITERIA
Rating
1. Observance of safety precautions.
30%
2. Appropriate tools are used in testing.
30%
3. Identifying the error code.
40% 100%
Total
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POST ASSESSMENT Do the Activity on More Security for Remote Desktop When Enzo travels on company business, he finds it’s a great help to be able to access his office computer from anywhere on the road using Remote Desktop. However, he wants to make sure his office computer as well as the entire corporate network is as safe as possible. One way you can help Enzo add more security is to change the port that Remote Desktop uses. Knowledgeable hackers know that Remote Desktop uses port 3389, but if you change this port to a secret port, hackers are less likely to find the open port. Search the Microsoft Knowledge Base articles (support.microsoft.com) for a way to change the port that Remote Desktop uses. Practice implementing this change by doing the following: 1. Set up Remote Desktop on a computer to be the host computer. Use another computer (the client computer) to create a Remote Desktop session to the host computer. Verify the session works by transferring files in both directions. 2. Next, change the port that Remote Desktop uses on the host computer to a secret port. Print a screen shot showing how you made the change. Use the client computer to create a Remote Desktop session to the host computer using the secret port. Print a screen shot showing how you made the connection using the secret port. Verify the session works by transferring files in both directions. 3. What secret port did you use?
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Instruction: Read each of the questions in the left-hand column of the chart. Place a check on the column that indicate your answers I Can Plan and prepare work to ensure occupational health and safety (OHS) policies and procedures are followed Obtain materials, tools, equipment and testing devices needed to on form with job requirements Interpret work instructions according to job requirements Obtain computer components/devices/systems and determines its location prior to installation Install equipment/devices/systems in accordance with job requirements Check/Test devices/systems and/or installations to determine the conformity to job requirements. Check computer systems and networks for configuration in accordance with specifications and requirements Diagnose fault or problem in the computer systems and networks in line with standard operating procedures (SOP)
YES
NO
Configure the identified systems and networks based on specifications and job requirements Inspect and test configured computer systems and networks in conformity with manufacturer's instructions/manual Correct/Adjust components or parts of computer systems and networks in accordance with job requirements Test computer systems and networks to ensure safe operation Perform scheduled/periodic maintenance in accordance with manufacturer's requirements Make needed repairs/replacements in accordance with established procedures, when necessary Document tasks undertaken in accordance with SOP Clean and clear worksite of all surplus/excess materials in accordance with company SOP
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Summative Test I. Identify what computer error is illustrated on the following situations. __________1. The LED indicator of your monitor is in steady orange color. _________ 2. When you open your PC, nothing shows up in your monitor and the LED indicator of your monitor is flashing in yellow color. __________3. When you open your PC it will show the processor brand and/or the motherboard brand but doesn't continue. Usually this error will result to system restart over and over again. __________4.This also happens even if you try disconnecting your computer set from the internet. This is what we called aftershock virus which will continue to run even if internet is disconnected. __________5. The computer opens up then boots but when the operating system loads it doesn't continue and it will take a lifetime if you're going to wait for it to load. __________6. This happens even if you try installing the hardware. When you restart your set it will happen again. __________7. When you try going to safe mode all you will see is a list of files in Command prompt style. __________8. Upon loading he operating system, you will hear a loading sound and then the sound stops, when you try running an audio file, no sound will be heard __________9.This will happen only in standby mode, when you move your mouse or type something, your system will automatically restart and the worst part is it will delete a file at random. __________10. Just like the mouse problem, when you open a program that will take the whole screen like for example a game and/or a program applications, when you close it, it will cause your system to restart.
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II. Choose the letter of the best answer: 1) These are moderately dangerous types of errors among those that can pop up on your PC. System errors are caused by malfunctioning hardware components, corrupted operating system modules, etc. a. System error C. Stop errors b. Runtime errors D. Device managers errors 2) These are caused by corrupted or malfunctioning system files or software executables. Most runtime errors cause the application that caused it to shut down. However, more serious runtime errors may cause the system to become unstable or unresponsive, leaving you with no choice but to reach for the Reset button. a. System error C. Stop errors b. Runtime errors D. Device managers errors 3) These are caused by corrupted hardware, especially malfunctioning RAM modules and bad sectors on hard disks. Stop errors can be difficult to resolve at times. a. System error C. Stop errors b. A Runtime errors D. Device managers errors 4) These are usually caused by corrupted driver files or malfunctioning hardware components. In case of the former cause, the problem is usually solved simply by reinstalling or updating the drivers. However, the latter cause can often be solved only by replacing hardware components. a. System error C. Stop errors b. B. Runtime errors D. Device managers errors 5) These are caused by malfunctioning hardware components, and are characterized by short beep sounds from the tiny internal speaker of your motherboard. POST code errors occur when you press the power button to turn on your PC.. a. System error C. Application errors b. B. Runtime errors D. Post Code errors 6) These can be caused at any point of time. As the name suggests, these are caused by applications while those are running. These are usually caused by glitches in the program code itself. These are usually resolved by updating the program to its latest version. a. System error C. Application errors b. Browser status errors D. Post Code errors 7) These are caused by problems faced by browsers when trying to access a website. These can be caused by misplaced web pages in the server of the 248
website itself, or due to connection problems. For instance, a 404 error would indicate that the browser is trying to access a webpage that does not exist in the specified location. a. System error C. Application errors b. Browser status errors D. Post Code errors 8) is define as the flow of electron or electric current. It is an invisible form of energy that can be transform into other form of energy like heat light and mechanical. a. electricity C. Proton b. atom D. Post Code errors 9) the amount of pulling force that makes the electron flow. Also known as potential difference or EMF(electromotive force). a. electricity C. Current b. resistance D. Voltage 10) a type of circuit that has an open path for current to flow. It means that current cannot flow in open circuit. a. Open circuit C. Current circuit b. resistance D. close circuit III. Match Column A with Column B Column A 1. Used for installing and removing screws in the computer unit. 2. Used for picking small parts in the computer unit. 3. Used for eliminating electrostatic discharge in the work area. 4. Primarily used for connecting terminals in the power supply and circuit board with the use of a soldering lead. 5. It is a paste used for heat dissipation of the processor. 6. A device used for cleaning optical media, such as DVD-ROMS and CD-writers. 7. A device used to crimp the RJ45 connector to the UTP cable 8. A device used for testing the network connection
Column B A. Screw drivers B. Pliers and tweezers C. Soldering iron D. Lens cleaner
E. Anti-static wrist strap, mat and spray F. Thermal paste
G. LAN Tester H. Crimping tool I. Systems Tool Box
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IV. Arrange the following steps in verifying the correct protocols are installed on the computer. _____Within the configuration tab double-click the TCP/IP protocol icon. Note: Do not click on the PPP or Dial-Up adapter, click on the network card adapter. _____Select the option to specify an IP address _____Click Start / Settings / Control Panel _____Double-click the Network icon _____In the TCP/IP properties click the IP address tab _____When specifying these values, the computers on the network must all have the same Subnet Mask and have a different IP Address. For example, when using the above values on one computer you would want to use an IP address of 102.55.92.2 on another computer and then specify the same Subnet Mask. _____Enter the IP address and Subnet Mask address, an example of such an address could be: IP Address: 102.55.92.1, Subnet Mask: 255.255.255.192 V. List down at list Five (5) common computer problems and solutions. Common Computer Problems 1. 2. 3. 4. 5.
Solutions
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KEY TO CORRECTIONS Test I 1. No Video Output 2. No Video Output 3. Doesn't Boot 4. Lots of pop up windows showing on standby mode 5. Never Ending Loading of Operating system 6. Lots of hardware installation windows appear 7. Safe mode doesn't work 8. Sound on/off error 9. Keyboard and mouse system restart 10. Application causes system to restart Test II 1. A 2. B 3. C 4. D 5. D 6. C 7. B 8. A 9. C 10. A Test III 1. 2. 3. 4. 5. 6. 7. 8.
A B E C F D H G
Test IV 3, 5, 1, 2, 4, 7, 6 Test V Answers may vary
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GLOSSARY OF TERMS Computer System - The complete computer made up of the CPU, memory and related electronics (main cabinet), all the peripheral devices connected to it and its operating system. Computer systems fall into two broad divisions: clients and servers. Client machines fall into three categories from low to high end: laptop, desktop and workstation. Servers range from small to large: low-end servers, midrange servers and mainframes. Configuration - The makeup of a system. To "configure" is to choose options in order to create a custom system. "Configurability" is a system's ability to be changed or customized. Connector - Any plug and socket that links two devices together. Although taken for granted and rarely in the limelight, connectors are a huge industry, and the quality of these components is more critical than most people would imagine. When not designed or constructed properly, they often become the weakest element in an electronic system. Display Adapter - A plug-in card in a desktop computer that converts the images created in the computer to the electronic signals required by the monitor. It determines the maximum resolution, refresh rate and number of colors that can be displayed, which the monitor must also be able to support. On many PC motherboards, the display adapter circuits are built into the chipset, and an AGP or PCI card is not required. ESD (Electro Static Discharge)- A small amount of static electricity that can destroy small parts of your computer. Expansion Board - A printed circuit board that plugs into an expansion slot and extends the computer's capability to control a peripheral device. All the boards (cards) that plug into a computer's bus are expansion boards, such as display adapters, disk controllers, network adapters and sound cards. Expansion Bus - An input/output bus typically comprised of a series of slots on the motherboard. Expansion boards (cards) are plugged into the bus. ISA and PCI are the common expansion buses in a PC. Graphical User Interface - A graphics-based user interface that incorporates movable windows, icons and a mouse. The ability to resize application windows and change style and size of fonts are the significant advantages of a GUI vs. a character-based interface. GUIs have become the standard way users interact with a computer, and the major GUIs are the Windows and Mac interfaces along with Motif for Unix and the GNOME and KDE interfaces for Linux. Motherboard - Also called the "system board," it is the main printed circuit board in an electronic device, which contains sockets that accept additional boards. In a desktop computer, the motherboard contains the CPU, chipset, PCI bus slots, AGP slot, memory sockets and controller circuits for the keyboard, mouse, disks and printer. It may also have built-in controllers for modem, sound, display and network, 252
obviating the need to plug in a card. A laptop motherboard typically has all peripheral controllers built in. Operating System - The master control program that runs the computer. The first program loaded when the computer is turned on, its main part, the "kernel," resides in memory at all times. The operating system sets the standards for all application programs that run in the computer. The applications "talk to" the operating system for all user interface and file management operations. Also called an "executive" or "supervisor," an operating system performs the following functions. Peripheral -Any hardware device connected to a computer, such as a monitor, keyboard, printer, disk, tape, graphics tablet, scanner, joy stick, paddle or mouse Server - A computer system in a network that is shared by multiple users. Servers come in all sizes from x86-based PCs to IBM mainframes. A server may have a keyboard, monitor and mouse directly attached, or one keyboard, monitor and mouse may connect to any number of servers via a KVM switch. Servers may be also be accessed only through a network connection as well. Sound Card - Also called a "sound board" or "audio adapter," it is a computer expansion board that records and plays back sound, providing inputs from a microphone or other sound source and outputs to speakers or an external amplifier. The de facto standard for sound card compatibility in PCs is Creative Labs' Sound Blaster. User Interface - All graphics based today, the user interface includes the windows, menus and method of interaction between you and the computer. Prior to the Mac, Windows and Motif (Unix) interfaces, all interaction was based on commands entered by the user. Operating systems may support optional interfaces and allow a new shell, or skin, to be used instead. Virus - Software used to infect a computer. After the virus code is written, it is buried within an existing program. Once that program is executed, the virus code is activated and attaches copies of itself to other programs in the system. Infected programs copy the virus to other programs.
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REFERENCES Books and Articles and Printed Materials: Barry Press, Marcia Press, PC Upgrade and Repair Bible, Desktop Edition., Wiley Publishing Inc., 10475 Crosspoint Boulevard, Indianapolis, IN 46256 Ron Gilster, PC Repair Bench Book., Wiley Publishing Inc., 10475 Crosspoint Boulevard, Indianapolis, IN 46256 Barry Press, Marcia Press, PC Upgrade and Repair Bible, Desktop Edition., Wiley Publishing Inc., 10475 Crosspoint Boulevard, Indianapolis, IN 46256 Ronaldo V. Ramilo and Deover M. Pasco , K to 12 Basic Education Curriculum- Technology and Livelihood Education Learning Module – Computer Hardware Servicing Jethro Campos , et.al , Competency – Based Learning Materials for Strengthening Technical Vocational Education Program Electronic Resources: http://www.buzzle.com/articles/computer-memory-types.html Computer Memory Types http://www.athropolis.com/popup/c-comp2.htm Measurements for Memory & Storage http://www.ustudy.in/ce/hard/u1 Fundamentals of PC repair http://danreb.com/sites/default/files/CHS-NC2%20Reviewer%20%20With%20Oral%20Questioning_0.pdf Occupational Health and Safety Precautions http://puzzlemaker.discoveryeducation.com/CrissCrossSetupForm.asp Puzzles for Activities http://info.psu.edu.sa/psu/cis/kalmustafa/CISCO/Lecture%20Slides/ITE_PC_v 40_Chapter2.pdf Occupational Safety Precautions http://www.youtube.com/watch?v=tfKe8PPI2zs&feature=related Conversion of Decimal N umber to Binary http://www.youtube.com/watch?v=s7M6_VeDhJE&feature=related http://www.youtube.com/watch?v=6N7bqBsFL0w-
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Computer Hardware Basics http://www.wikihow.com/Install-Computer-HardwareHow to install Computer Hardware http://www.directron.com/howtoupsys.htmlHow to install Computer components en.wikipedia.org http://www.bechtel.com/assets/files/Environmental/ToolboxSafetyTopics/20 10/ProperToolSelection.pdf Tool Selection http://www.iml.uts.edu.au/assessment-futures/designing/assembling.html http://www.instructables.com/id/Disassemble-a-Computer/- Computer Basics
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