CBLM 1, NC2

COMPETENCY BASED LEARNING MATERIAL

Sector:

ICT

Qualification Title:

COMPUTER HARDWARE SERVICING NC II

Unit of Competency Maintain computer systems and networks Module Title:

Maintaining computer systems and networks STI Education Services Group Inc. Valencia Campus Jupertess Bldg. ML Quezon St. Valencia City Bukidnon

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Maintaining computer Systems and networks

Date Developed: April 11, 2011

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Issued by: Page 1 of 50

Developed by: Nebuchadnezzar Buggy A. Sayson

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No.

Unit of Competency

Module Title

Code

1

1. Install Computer Systems and Networks

Install Computer Systems and Networks

2

2. Diagnose and Troubleshoot Computer Systems

Diagnose and Troubleshoot Computer Systems

3

3. Configure Computer Systems and Networks

Configure Computer Systems and Networks

4

4. Maintain Computer Systems and Networks

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Maintain Computer Systems and Networks


ELC 724319

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ELC724320

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HOW TO USE THIS COMPETENCY BASED LEARNING MATERIAL Welcome to the module in Maintaining Computer Systems and Networks. This module contains training materials and activities for you to complete. You are required to go through a learning activities in order to complete each learning outcome of the module. In each learning outcome are information Sheets, Self-Checks, Operation Sheets and Job Sheets. Follow these activities on your own. If you have questions, don’t hesitate to ask your facilitator for assistance. The goal of this module is the development of practical skills. To gain these skills, you must learn basic concepts and terminology. For most part, you’ll get this information from the Information Sheets. This module is prepared to help you achieve competency, in Computer Hardware Servicing NCII .

the

required

This will be the source of information for you to acquire knowledge and skills in this particular competency independently and at your own pace, with minimum supervision or help from your instructor. Remember to: Work through all the information and complete the activities in each section. Read information sheets and complete the self-check. Suggested references are included to supplement the materials provided in this module. Most probably your trainer will also be your supervisor or manager. He/she is there to support you and show you the correct way to do things. You will be given plenty of opportunity to ask questions and practice on the job. Make sure you practice your new skills during regular work shift. This way you will improve both your speed and memory and also your confidence. Use the Self-checks, Operation Sheets or Job Sheets at the end of each section to test your own progress. When you feel confident that you have had sufficient practice, ask your Trainer to evaluate you. The results of your assessment will be recorded in your Progress Chart and Achievement Chart.

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MODULE CONTENT UNIT OF COMPETENCY: MAINTAIN COMPUTER SYSTEMS AND NETWORKS MODULE TITLE: MAINTAINING COMPUTER SYSTEMS AND NETWORKS INTRODUCTION:

This module deals with the knowledge, skills, and application towards Maintaining computer Networks. SUMMARY OF LEARNING OUTCOMES: At the end of this module you will be able to : 1. 2. 3. 4.

Plan and prepare for the maintenance of computer systems and networks Maintain computer systems Maintain network systems Inspect and test configured/repaired computer system and networks

ASSESSMENT CRITERIA: 1.1 Maintenance planned and prepared with OHS policies and procedures. 1.2 The materials, tools, equipments and testing devices obtained and checked. 1.3 Computer systems and networks checked, identified and maintained with specifications and requirements to conform with manufacturers 2.1 Appropriate personal protective equipment is used and OHS policies and procedures are followed 2.2 Normal function of systems and networks is checked in accordance with manufacturer’s instructions 2.3 Fault or problem in the computer systems and networks is diagnosed in line with the standard operating procedures. 2.4 Computer systems and networks are configured in line with the standard operating procedures. 2.5 Unplanned events or conditions are responded to in accordance with established procedures 3.1 Final inspections are undertaken to ensure that the configuration done on the systems and networks conforms with the manufacturer’s instruction/manual 3.2 Computer systems and networks are checked to ensure safe operation. 3.3 Report is prepared/completed according to company Requirements.

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Identify, explain, and apply OH & S policies and procedures in maintaining computer systems and networks. Identify and explain the use/function of different types of tools, and testing instruments for maintaining computer systems and networks. Identify and explain different types of cleaning aids, software diagnostics and anti-viruses used in maintaining computer systems and networks. Disassemble and assemble computer system unit. Perform computer system hardware’s preventive maintenance. Perform computer system software’s preventive maintenance. Inspect and record the condition, and other vital information of the computer systems and networks. Document and record the sequence of events in maintaining computer systems and networks.

CONDITIONS: The students/trainees must be provided with the following: •

Writing materials

•

References/ Books Manual

•

Handouts

•

Fully-equipped Router and Switch Hub

•

Computer and other Computer Peripherals

And all related tools ASSESSMENT METHODS: • • • •

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Learning Experiences Learning Outcome 4 PLAN AND PREPARE FOR THE MAINTENANCE OF COMPUTER SYSTEMS AND NETWORKS Learning Activities

Special Instructions

1. Read Information Sheet 4.4-1

Read information sheet. After reading the learner is encourage to follow, do’s and don’ts

1. Read Information Sheet 4.4-2

2. Read information sheet. After reading the learner is encourage to answer the self check.

Technical Terms 1.

2. Answer Self-Check 4.4- Compare answer to answer key 2

3. Read Information Sheet 4.4-2 Tools and materials for network testing

Read information sheet and answer self-check.

4. Answer Self-Check 4.42

Compare answers answer keys

5. Read Information Sheet 4.4-3 Cleaning Aids

Read information sheet Perform Task sheets 4.4-3 Disassemble and assemble

4. Read and Perform PC Disassemble and assemble video 4.4-1

5. Perform Task Sheets 4.4-3 Disassemble & Assemble PC

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Compare performance to checklist


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6. Read Information Sheet 4.4-4 4.4-5Preventive maintenance Inspect and Record the vital information of the computer Job Sheet 4. 4-7 7. Documenting and record report

Plan maintenance schedule Perform Job sheet Job Sheet 4. 47

File-up and Generate Log report Job sheet 4.4-8

Job sheet 4.4-8 8.

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INFORMATION SHEET 4.4-1

Learning Objective: After reading this INFORMATION SHEET, YOU MUST be able to apply safty methods on handling hardware & network maintenace.

Do,s •

Keep the Working Area clean. To ensure smooth working in on a given task.

•

Remove unnessary things/tools that are not related to work specification. To keep organized to during on the task given.

•

Wear anti-static wrest trap in handling CPU Componets. To prevent static electiric sensitive parts or components of the CPU.

•

Wear a thick ruber sole shoe. To prevent Electric shock. Don’ts

•

Don’t open the CPU without unpluging or terminating the electric from the power source. It harmful and may result to electric shock.

•

Don’t remove the procesor from the mainboard if not necessary. It may damage the procesor, if it is needed make sure that it is handle properly and place on proper container.

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

INFORMATION SHEET 4.4-2 Technical Terms

Learning Objective: After reading this INFORMATION SHEET, YOU MUST be able to gain familiarization on the different technical terms used in hardware & network maintenace.

OHS – Occupational Health and Safety  LAN Card – Local area network interface card.  Server – is a part of a network. It is a special computer that users on the network can asses 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  USB – (Universal Serial Port)  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.  Printer - It is a piece of hardware that produces a paper copy (also known as ‘hardcopy’) of the information generated by the computer.  Flash drive – a portable storage device which is plug directly to the USB port.  Network – a group of computers and associated devices that are connected by communications facilities.  OS (Operating system) software that controls the allocation and use of programs and data that a computer uses.  Software – programs and data that a computer uses.  Motherboard – contains the CPU, BIOS, Memory, mass storage interfaces, serial and parallel ports, expansion slot and all the controllers required to control standard peripheral devices such as the display screen, keyboard and disk drive

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 UTP – (Unshielded Twisted Pair) least expensive and most popular network media.  LAN – Local Area Network, the connection of computers within an organization or a building.  MAN – Metropolitan Area Network, the establishment of connection among computers within a country or municipality.  WAN – Wide Area Network, global connection of networked computers. Otherwise known as the internet.  Maintenance - is the testing and cleaning of equipment.  Planning – is both the organizational process of creating and maintaining a plan; and the psychological process of thinking about the activities required to create a desired future on some scale  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.  Router is a device that forwards data packets between computer networks, creating an overlay internetwork. A router is connected to two or more data lines from different networks. When a data packet comes in on one of the lines, the router reads the address information in the packet to determine its ultimate destination. Then, using information in its routing table or routing policy, it directs the packet to the next network on its journey.  Server OS- Server OSes are designed from the ground up to provide platforms for multi-user, frequently business-critical, networked applications. As such, the focus of such operating systems tends to be security, stability and collaboration, rather than user interface.

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SELF-CHECK 4.4-2 Fill in the Blank Direction: Choose the correct answer from the choices inside the box. Write your answer in your answer sheet. Printer Motherboard Network Software Flash drive Router

1. The device that forwards data packets between computer networks, creating an overlay internetwork is called __________. 2. A group of computers and associated devices that are connected are called ___________. 3. ___________ is portable storage device which is plug directly to the USB. 4. A _____________ contains the CPU, BIOS, Memory, mass storage interfaces, serial and parallel ports, expansion slot and all the; controllers required to control standard peripheral devices such as the display screen, keyboard and disk drive. 5. It is a piece of hardware that produces a paper copy (also known as ‘hardcopy’) of the information generated by the computer thru a ____________. II. Write and explain the following. Direction: write something base on your understanding, the uses or function of the following. 1. Flash drive 2. software

ANSWER KEY 4.4-2

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1. Router 2. Network 3. Flash drive 4. Motherboard 5. Printer II. 1. Flash drive a portable storage device which is plug directly to the USB port. 2. Software: programs and data that a computer uses and it is the system that links the user and the Computer.

INFORMATION SHEET 4.4-3

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Tools and materials for network testing Learning Objective: After reading this information sheet you must be able to identify the different tools needed for networking testing.

Screw driver

CD Rom

Crimping tool

Allen range

Lan Tester

USB Flash disk

PC repair Tool kit Materials

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Equipment/Facilitie s

Tools & Instruments

Supplies & Materials

Server

Protective eye wear

Floppy disk

Computer peripherals

Wire stripper with cutter

Compact Disk

Desktop computers

Pliers(Assorted)

OHS guidelines

Screw drivers (Assorted)

Phil. Environmental Soldering iron/gun protection standards De-soldering tool Monitors Flashlight Motherboard

Tweezers

Power supply

Mirrors

Network cablings

device

and Antistatic wrist wrap LAN Tester

Hubs

Crimping tool

Switches

Software installer

LAN Cards

Work bench

Printers and

Magnifying glass

Scanners Routers USB Flash Drives

SELF-CHECK 4.4-3

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Categorized the following Direction: Group the tools and equipment according to its category. Write your answer in your answer sheet.

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•

Server

•

Floppy disk

•


•

LAN Cards

•

Printers and

•

Scanners

•

Routers

•

USB Flash Drives

•

Protective eye wear

•

•

Desktop computers

•

OHS guidelines

•

Phil.

Environmental

protection standards •

Monitors

•

Motherboard

•

Power supply

•

Network device and cablings

•

De-soldering tool

•

Flashlight

•

Tweezers

•

Mirrors

•

Antistatic wrist wrap

•

LAN Tester

•

Crimping tool


•

Software installer

•

Pliers(Assort ed)

•

Work bench

•


•

Magnifying glass

•

Compact Disk

•

•

Hubs

•

Switches

Soldering iron/gun

Materials

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Equipment/Facilitie s

Tools & Instruments


ANSWER KEY 4.4-3

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Materials Equipment/Facilities

Tools & Instruments


Server

Protective eye wear

Floppy disk



Compact Disk

Desktop computers

Pliers(Assorted)

OHS guidelines


Phil. Environmental protection standards

Soldering iron/gun De-soldering tool

Monitors

Flashlight

Motherboard

Tweezers

Power supply

Mirrors

Network device and cablings

Antistatic wrist wrap

Hubs

LAN Tester Crimping tool

Switches

Software installer

LAN Cards Printers and Scanners

Work bench Magnifying glass

Routers USB Flash Drives

Information Sheet 4.4-3 Cleaning Aids

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Learning Objectives: After reading this information sheet you must be able to identify cleaning aids. Antivirus or anti-virus software is used to prevent, detect, and remove malware, including but not limited to computer viruses, computer worms, trojan horses, spyware and adware. Computer security, including protection from social engineering techniques, is commonly offered in products and services of antivirus software companies. This page discusses the software used for the prevention and removal of malware threats, rather than computer security implemented by software methods. Eg. norton, kaspersky

Free Anti Virus 1. AVG Free Edition 2. Avast! Home Edition 3. AntiVir Personal

Commercial Anti virus software 1. Kaspersky Anti-Virus 2. NOD32 Antivirus

Utility software categories • •

Anti-virus utilities scan for computer viruses. Backup utilities can make a copy of all information stored on a disk, and restore either the entire disk (e.g. in an event of disk failure) or selected files (e.g. in an event of accidental deletion).

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• • •

• •

•

•

• •

•

• • • • • •

• •

Data compression utilities output a shorter stream or a smaller file when provided with a stream or file. Disk checkers can scan operating hard drive. Disk cleaners can find files that are unnecessary to computer operation, or take up considerable amounts of space. Disk cleaner helps the user to decide what to delete when their hard disk is full. Disk compression utilities can transparently compress/uncompress the contents of a disk, increasing the capacity of the disk. Disk defragmenters can detect computer files whose contents are broken across several locations on the hard disk, and move the fragments to one location to increase efficiency. Disk partitions can divide an individual drive into multiple logical drives, each with its own file system which can be mounted by the operating system and treated as an individual drive. Disk space analyzers for the visualization of disk space usage by getting the size for each folder (including sub folders) & files in folder or drive. showing the distribution of the used space. Disk storage utilities Archive utilities output a stream or a single file when provided with a directory or a set of files. Archive utilities, unlike archive suites, usually do not include compression or encryption capabilities. Some archive utilities may even have a separate un-archive utility for the reverse operation. File managers provide a convenient method of performing routine data management tasks, such as deleting, renaming, cataloging, uncataloging, moving, copying, merging, generating and modifying data sets. Cryptographic utilities encrypt and decrypt streams and files. Hex editors directly modify the text or data of a file. These files could be data or an actual program. Memory testers check for memory failures. Network utilities analyze the computer's network connectivity, configure network settings, check data transfer or log events. Registry cleaners clean and optimize the Windows registry by removing old registry keys that are no longer in use. Screensavers were desired to prevent phosphor burn-in on CRT and plasma computer monitors by blanking the screen or filling it with moving images or patterns when the computer is not in use. Contemporary screensavers are used primarily for entertainment or security. System monitors for monitoring resources and performance in a computer system. System profilers provide detailed information about the software installed and hardware attached to the computer.

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http://en.wikipedia.org/wiki/Utility_software

Information sheet 4.4-4

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Disassemble and assemble computer system unit

In Part of this series, we covered the fundamentals of the components used in today's PCs, discussed some of the important aspects of hardware configuration, and provided some shopping tips. Now, in Part we will delve deeper, using a full tower case to explain how to assemble a standard PC. An Overview Of Steps Involved First, let's take a look at the various steps to putting together a PC. • • • • • • • • • • •

Opening the empty case; Preparing to fit the components; Fitting the motherboard; Fitting the RAM, processor, and cooler; Installing the graphics card and sound card; Fitting the hard disk and floppy drive; Installing the floppy and CD-ROM drives; Connecting the ribbon cables; Powering the drives and motherboard; Connecting the cables for the case front panel; Final check.

The above list is intended to be used as a general guide. In practice, you can vary the actual order of assembly to some degree. We use a tower case in our

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demonstration because it makes for clearer illustrations. The same assembly principles apply for midi and mini cases. The case we use has a slide-out tray for the motherboard and the expansion cards. There are a variety of case designs on the market, and we've discussed this in depth in an earlier article, entitled How To Select The Right Case . Take time to familiarize yourself with the case before installing any components in order to avoid having to remove some of them later!

Empty case with motherboard tray withdrawn. Our tower case is built to ATX specification and includes a 300-watt power supply. Two side panels can be individually removed after undoing the screws. Some other cases have a one-piece outer cover in the shape of an upside down 'U.' No matter how the case is constructed, you can normally gain access to the interior of the PC-to-be from both sides. The price of a case is a good indicator of its modularity and build quality. Cheaper cases often force you to assemble the PC in a specific order, are made of softer and/ or thinner metal, and may contain sharp edges. Expensive cases provide clever design features, a more solid construction, better finish, and are often fitted with more capable power supplies. When you have opened the case by removing the side panels, you will see what accessories the case manufacture has supplied. A power cord and screws should always be included, and you will also often find a set of case feet.

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Empty tray with six motherboard spacers. Our case has a slide-out tray, which provides a very elegant way to install the motherboard and all of its components. Cheaper cases will have a mounting plate fixed permanently to the case. If you have this type, you should first lay the case on its side. Next, screw in the spacer mounts for fixing the motherboard. The photo shows six spacers already fitted to the mounting plate. There are usually more holes drilled in the mounting plate than you actually need. There are standard locations for these holes on the mounting plate, which correspond to the holes on the motherboard. How many of these are actually used depends on the board manufacturer. Cases are normally designed to accept any motherboard. Compare the available holes with the ones on your motherboard to determine where to fit the threaded spacers.

Spaced well away from the metal - the motherboard on the mounting plate.

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Preparing To Fit The Components

Overview of all components (from left to right and top to bottom): network adapter card; floppy disk drive; CD-ROM drive; sound card; hard disk; ribbon cable; graphics card; RAM; CPU cooler; and, motherboard. Let's take another look at the photo. The inclusion of a component from a particular manufacturer does not imply a recommendation on our part. We use them to illustrate the installation procedure of similar components. The choice of components is entirely up to you. You can always find reviews of the latest products on the Tom's Hardware site, together with articles on the latest developments and product recommendations.

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Lift the lever on the CPU socket.

When the processor is in its socket, push the lever back down. First, insert the CPU in its socket. To do this, raise the small lever at the side of the socket. If you examine the CPU from underneath, you will notice that there is a pin missing at one corner. Match this corner with the corner on the socket where there is a hole missing. The processor is keyed in this way to make sure it is inserted correctly. Please bear in mind that you should not force the CPU when inserting it! All pins should slide smoothly into the socket. If you are sure that you have positioned the CPU correctly (using the missing pin as reference), yet are unable to insert the CPU, it is likely that one of its pins is bent. If this has happened, straighten the pin using tweezers or a screwdriver. Once you have installed the processor, lock the lever back down.

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Applying thermal paste to the processor. You must apply thermal paste or a thermal pad to the top of the CPU. This will help to transfer heat from the processor to the cooler. Failure to apply a thermally conductive medium to the processor can cause it to fail! Unless you use thermal paste, any slight misalignment of the contact surface of the cooler, or even the presence of tiny specks of dust, will prevent heat from being efficiently transferred away from the processor. Thermal paste also fills the microscopic valleys in the contact surface of the CPU (known as the die). Some cooler manufacturers supply thermal paste with their products. If yours did not, it is available from most good computer or electronics stores and costs around two to three dollars. A cooler made of copper is recommended, since this material is a very efficient heat conductor. You should know your processor's socket type when buying a cooler. You have a choice of two types of cooler - one suitable for both Socket A/462 and Socket 370, or one just for Socket 423 (Pentium 4).

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Make sure that the cooler is in the correct position. Here is the cooler about to be connected with the socket.

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Clips fix the cooler to the socket. This applies to Socket A/462 (AMD) and Socket 370 (Pentium III and C3).

Plenty of air flow. Here is the power connection for the cooler's fan. You may have wondered why the connector lead for the fan has three wires. Two of these carry the power; the third is used for monitoring the speed of the fan. Therefore, the BIOS is always aware of the speed at which the fan is running. Minor Differences With The Pentium 4 System Socket 370 (Intel Pentium III or Via C3), Socket A/462, and Socket 7 all use the same method of mounting the cooler. However, Socket 478-based Pentium 4 systems are slightly different. Intel specifies that motherboard manufacturers should provide a plastic guide rail to ensure that the cooler is always mounted flat to the surface of the processor. Also, the cooler is not locked down with clips but with a snap-in system, as shown in the following pictures.

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Pentium 4 motherboards have a socket with 478 pins and a guide for the CPU cooler.

Attaching a Pentium 4 cooler The RAM must be suitable for the motherboard. There are currently three types of RAM available: SDRAM, DDR SDRAM and RDRAM. The motherboard's chipset determines which type of RAM may be used. You will find the specification on the motherboard's box or in the motherboard manual.

Installing RAM. A notch at the bottom of the memory module ensures that the RAM is fitted correctly. The notch is located in different places on SDRAM, DDR SDRAM and RDRAM. DIMM memory modules have a notch underneath that lines up with a key on the memory slots. Although it is not possible to insert the modules the wrong way, you should line up the RAM with its slot before installing it. Then, carefully press the module into the slot. Caution is recommended, as too much pressure may damage

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certain tracks on the motherboard. It is best to push one side down first, and then the other. The notch will snap into its key as soon as one side is seated correctly. To make sure it is seated correctly, you can always take the memory module out again. Releasing the clips will pop the module out of its socket. Then, you can just lift it out.

Passed the first hurdle. Motherboard with processor, cooler and memory.

In place - sound card (left) and graphics card (center) in white PCI slots. There is room for a network card, if required. Nowadays, graphics cards are usually fitted in the AGP slots provided specifically for this purpose. These are brown in color, in contrast to the PCI slots, and are generally located in the center of the motherboard. PCI graphics cards are rarely used. Now, select a PCI slot for each of your other plug-in cards, including the sound card. Before fitting an expansion card, remove the appropriate slot insert from the back panel of the case (or of the motherboard tray). As a rule, you need to undo a screw to do this, although sometimes convenient plastic clips are used. The insert may also form part of the back panel. Choosing a location for a PCI card will not usually be a problem on a simple system. In our experience, however, selecting an appropriate PCI slot can sometimes be problematic with some brands of motherboard. For example, IRQs

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can be reserved twice or even three times over. Resource conflicts can make it difficult for the operating system and motherboard to work together properly. This can often be solved by moving the offending PCI card to another slot or by manually reassigning IRQs. The other reason is more practical. If you see a large heat sink on a plug-in card, perhaps even with a fan on top, the chip underneath will be producing a lot of heat that has to be removed. There is only one reason we did not fit the sound card next to the graphics card: we wanted to keep some space between the cards in order to prevent heat buildup. We assume that you have already configured your hard disk the way you want it single, master, or slave. The photo below shows the hard disk already fitted. As you can see, we can look right through the case here. If we had slid the motherboard tray back into position, it would have been impossible to screw the hard disk in from the left.

At the moment, we still have good access to the hard disk (bottom) and the floppy drive (top). You can see the screws for the drive on the side. Use two screws per side on each drive. We would like to touch briefly on the topic of drive cooling, as it is quite important with the current 7,200 rpm drives. Hard disks running at 7,200 rpm can quickly reach temperatures in excess of 50°C. You should, therefore, always leave some space above them to prevent heat buildup. The power supply fan is normally powerful enough to provide adequate air circulation inside the case. Installing a CD-ROM drive is similar to installing a hard disk. First, check that the jumper configuration is correct.

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CD Drive In Drive Cage. You only get to see the metal below the decorative plastic front panel when installing your system; the case metal is actually hidden by plastic panels. The entire front section, or at least the part where the drives will be installed, is manufactured from a single, large piece of metal, in which the drive holes are then punched. For some years now, the CE norm for cases has specified this kind of metal panel, as only metal can reduce electromagnetic emissions - the processor usually being the worst offender in this area. In practice, there are two options. If the metal knockouts are pre-stamped, you have to either take them out using metal cutters, or knock them out using force. If you have a high quality computer case, you can remove and replace these metal panels whenever you like. Check carefully to see if there is an easy way to remove these panels that will reduce the chances of your accidentally damaging one or more of them. When we have opened up the hole, we can feed the CD-ROM drive in and screw it into place. You will need the fine-threaded type screws. Always use four screws. Be careful not to over-tighten the screws, as excess pressure can put a strain on the case that could lead to twisting. The faster a drive's rotational speed, the more serious the effect. Tighten the screws only enough to ensure that the drive is secure. Heat is a consideration with CD-ROM drives, as it is with disk drives. Your PC should now look similar to the one in our photograph. All key components, such as the motherboard, processor, RAM, graphics card, sound card, hard disk, CD-ROM and floppy, have been installed. Now it is time to connect the cables.

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PC still without the cables As you will be aware after reading Part 1, there are two main cable types: the 34pin cable for the floppy drive and the 40-pin IDE cable (with 80 wires) for the hard disk and CD-ROM. Cables are always color-coded to show pin 1. Most drives also provide some kind of identification for pin 1. If you find that this is not the case, just remember that pin 1 is the one next to the power plug.

Ribbon cable. The markings show the direction in which the power flows. Bottom: 80-pin for hard disk. Top: 34-pin for floppy.

Four-pole for 5 and 12 volts. Disk drive power connector on the right next to the ribbon cable. Power supplies are fitted with at least five plugs for delivering power to the drives. If you need more than this, consider buying one or more splitter cables. A splitter cable provides two connectors from a single one. The corners of the plugs and sockets are keyed to ensure correct polarity. Floppy drives have smaller plugs, which are easily recognized among the cables coming from the power supply. Finally, there is the large ATX plug that plugs into the power socket on the motherboard. ATX12 or P6 should be connected where required. The latter provides extra power for power-hungry processors,

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Front panel connections: HDD LED (hard disk light), power (on/ off) switch and RESET switch in the top row. Below: mini speaker. All motherboards group the pins that provide front panel functions at the bottom right of the board. You should find these described in the handbook that came with your motherboard. The abbreviations printed on the board itself are not particularly helpful for beginners, who may find the following short explanation of the abbreviations useful. • • • •

•

SP, SPK, or SPEAK: the loudspeaker output. It has four pins. RS, RE, RST or RESET: connect the two-pin Reset cable here. PWR, PW, PW SW, PS or Power SW: power switch, the PC's on/ off switch. The plug is two-pin. PW LED, PWR LED or Power LED: the light-emitting diode on the front panel of the case illuminates when the computer is switched on. It is a two-pin cable. HD, HDD LED: these two pins connect to the cable for the hard disk activity LED.

Don't worry about polarity. The Reset and On/ Off switch will work no matter how they are connected, but the LEDs will not light up if they are connected in reverse polarity. If you can hear disk activity but the LED does not light, simply reverse the plug. Final Check Congratulations - you've done it! You have fitted and connected all components. Before you boot your new computer for the first time, recheck everything. It is very easy to overlook something obvious. Consider the following: • •

Motherboard jumper configuration: are the settings for the processor correct? Drive jumper settings: master/ slave correct?

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• • • • •

Are the processor, RAM modules and plug-in cards firmly seated in their sockets? Did you plug all the cables in? Do they all fit snugly? Have you tightened all the screws on the plug-in cards or fitted the clips? Are the drives secure? Have you connected the power cables to all drives?

Once you have checked all of the above, you can start your PC and install your operating system.

http://www.tomshardware.com/reviews/buildingpc,518.html

Note follow the Hyperlink it will show you facts and more information

Click PC Disassemble and assemble Click PC Disassemble and assemble Click XP Instillation tutorials Click Windows 7 Installation Guide Information sheet 4.4-4b Manufacturer Manual Basic Troubleshooting Guide Volume 1.1 pg 15-16

AMI Beep Code

1 long, 8 short Display/Retrace test failed. 1 long, 3 short Conventional/Extended memory failure. 11 short Cache Memory error. 10 short CMOS shutdown Read/Write error. 9 short ROM BIOS checksum failure. 8 short Display memory Read/Write test failure 7 short Virtual mode exception error. 6 short Keyboard controller Gate A20 error.

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5 short Process failure. 4 short System timer failure. 3 short Base 64k RAM failure. 2 short Parity circuit failure. 1 short DRAMS refresh failure.

Beep Code Description AWARD Beep Code 1 Long, 2 Short A video error has occurred and the Bios cannot initialize the video screen to display any additional information. Any other beep(s) RAM Problem.

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Job Sheet 4. 4-4

Title :

PC Disassemble and Assemble

Performance Objective: Given the necessary supply/ materials and equipment, Dissemble and Assemble computer, install operating system and perform trouble shooting Supply/materials : Screwdriver Antistatic Wrist trap Equipment

: Computer Set

Step /Procedure: 1. Unplug from power source. 2. Remove all peripheral attachment. 3. Open the CPU. 4. Remove the power supply 5. Remove hard disk and CD Rom from the CPU case. 6. Remove Video card, Lan card and modem from the Mainboard/ Motherboard 7. Remove the Mainboard/Motherboard from the CPU Case. 8. Return the parts to its original place.

Assessment Method : Actual assessment.

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Performance Criteria 4.4-4 Trainee’s Name ________________________________

Date : ________________

Criteria

YES N O

1. Is the (OH&S) Occupational Health and Safety observed at all time? 2. Is the trainee disassemble computer system unit? 3. Is the trainee Assemble computer system unit? 4. Is the computer parts and peripherals are place properly installed? 5. Is trainee perform the operations at a given time?

Comments/ Suggestions:

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Information Sheet 4.4-5

Preventive Maintenance Learning Objectives: After reading this information sheet, you must be able to use preventive maintenance in computer system. Planning and preparing systematic maintenance procedure will save time, money and frustration. It is a good idea and opportunity to learn the proper care and maintenance of your computer. PC maintenance is an important topic for anyone who owns a PC. Looking after your PC properly ensures you of trouble-free use. Regular PC maintenance also keeps the machine’s performance optimal This procedure also keeps the file safe if there is an accidental crash on Operating System A. Plan Maintenance Procedures for Computer System and Networking. 1. Design a systematic maintenance plan for hardware. • • • • • •

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Monitoring, evaluating and updating plan. Place your computer in a well ventilated area. Schedule use of computers for its longer life. Move computers only when it is turned off and unplugged. Treat your computer properly. Maintain your hard disk




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Sample Monthly Maintenance Plan Monthly

January

February

March

April

Conduct hardware maintenanc e Hardware Cleaning Replace computer damage parts

Sample Weekly Maintenance Plan

1

Week

2

3

4

5

6

Install or secure passwords

Update Antivirus Clean-up temp file / Recycle Ben

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Job Sheet 4.4-6

Title :

Software Maintenance

Performance Objective: Given the necessary equipment, maintain software. Equipment

: Computer Set

Step /Procedure: • • •

Install or secure passwords Delete temporary files Update antivirus and spy ware

Assessment Method : Actual assessment.

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Date: ________________

Criteria

YES N O

1. Did I install or secure passwords? 2. Where temporary files deleted? 3. Where antivirus and spy ware updated?


Trainer’s Name: ______________________________ Date : _____________________

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Inspect and Record Learning Objectives: After reading this information sheet, you are able to

Inspect and record the condition, and other vital information of the computer systems and networks. Inspect the computer, record the vital information to keep track of the record and condition of the computer. E.g. 1 Get the Following Information

Work Station Name:____ Brand

Serial

Remarks/condition

a.

Parts Name

b.

Monitor

AOC

AOC12345

ok

c.

Keyboard

CR King

Key12365

ok

d.

Mouse

Genius

Ge23484

ok

e. Main board/motherboard

Asus

ASU7549

ok

f.

Hard disk

Seagate 40Gb

SGN1216212N

ok

g.

Ram

Kingston 512

Kngs236736N

ok

h.

Processor

Intel 2.6GHz

I5

0k

i.

NEC/ Network Card

Intel pro

100/1000

ok

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Job Sheet 4.7-7

Title :

Inspect and Record

Performance Objective: Record the vital information of the computer Equipment

: Computer Set

Step /Procedure: • • •

Record the serial Number of the computer parts and components. Inspect and record the condition. Mark or label the date inspected.

Assessment Method: Actual assessment.

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Trainer’s Name: ______________________________ Date: _____________________ Sample Record Form Work Station Name:____ j.

Parts Name

k.

Monitor

l.

Keyboard

m.

Mouse

Brand

Serial

Remarks/condition

n. Main board/motherboard o.

Hard disk

p.

Ram

q.

Processor

r.

NEC/ Network Card

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Date: ________________

Criteria

YES N O

1. Did I record the serial Number of the computer parts and components? 2. Did I Inspect and record the condition? 3. Did I Mark or label the date Inspected?


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Document and Record the Events Learning Objectives: After reading this information sheet, you are to record the events and create documentation. Create a log summary report on the maintenance of computer system and Network. Fill up the following job sheet and check list. Record the events occurrence of the following •

Hardware failure

•

Network failure

•

Software failure

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Job Sheet 4. 8-1

Title :

Document and Record the Events

Performance Objective: Generate report on the incidents on the computer system and Network Equipment

: Computer Set

Step /Procedure: record the following incidents •

Hardware failure

•

Network failure

•

Software failure

Assessment Method: Written log Report.

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Job Sheet 4.4-8 Trainee’s Name ________________________________

Incident

Date

time

Date: ________________

Reasons

Recommendation:_________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ _________________________________________________________________________

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CBLM 1, NC2

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