Edan M3 - Vital Signs Monitor Service Manual

About this Manual P/N: 01.54.109399-11 Release Date: November 2011 © Copyright EDAN INSTRUMENTS, INC. 2008-2011. All rights reserved.

Statement This manual will help you understand the operation and maintenance of the product better. It is reminded that the product shall be used strictly complying with this manual. User’s operation failing to comply with this manual may result in malfunction or accident for which EDAN INSTRUMENTS, INC. (hereinafter called EDAN) can not be held liable. EDAN owns the copyrights of this manual. Without prior written consent of EDAN, any materials contained in this manual shall not be photocopied, reproduced or translated into other languages. Materials protected by the copyright law, including but not limited to confidential information such as technical information and patent information are contained in this manual, the user shall not disclose such information to any irrelevant third party. The user shall understand that nothing in this manual grants him, expressly or implicitly, any right or license to use any of the intellectual properties of EDAN. EDAN holds the rights to modify, update, and ultimately explain this manual.

Responsibility of the Manufacturer EDAN only considers itself responsible for any effect on safety, reliability and performance of the equipment if: Assembly operations, extensions, re-adjustments, modifications or repairs are carried out by persons authorized by EDAN, and The electrical installation of the relevant room complies with national standards, and The instrument is used in accordance with the instructions for use. Upon request, EDAN may provide, with compensation, necessary circuit diagrams, and other information to help qualified technician to maintain and repair some parts, which EDAN may define as user serviceable.

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Terms Used in this Manual This guide is designed to give key concepts on safety precautions. WARNING: A WARNING label advises against certain actions or situations that could result in personal injury or death. CAUTION: A CAUTION label advises against actions or situations that could damage equipment, produce inaccurate data, or invalidate a procedure. NOTE: A NOTE provides useful information regarding a function or a procedure.

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Table of Contents Chapter 1 Warranty and Service................................................................................................. 1 1.1 Standard Service................................................................................................................. 1 1.2 Limitation of Warranty ...................................................................................................... 1 1.3 Service Procedure............................................................................................................... 1 1.4 Contact Information ........................................................................................................... 3 Chapter 2 Installation and Safety................................................................................................ 4 2.1 Environment Requirements................................................................................................ 4 2.2 Electrical Requirements ..................................................................................................... 5 2.3 Safety Requirements .......................................................................................................... 5 2.4 Installing the Monitor......................................................................................................... 6 2.4.1 Install the Monitor on a Flat Surface........................................................................ 6 2.4.2 Mount the Monitor on Wall ..................................................................................... 6 2.4.3 Install the Monitor on Pole Clamp ........................................................................... 6 2.4.4 Install the Monitor on Trolley .................................................................................. 6 Chapter 3 Test and Maintenance................................................................................................. 7 3.1 Routine Test ....................................................................................................................... 7 3.1.1 Visual Inspection...................................................................................................... 7 3.1.2 Power- on Test ......................................................................................................... 7 3.1.3 Key Test ................................................................................................................... 7 3.1.4 Recording Test ......................................................................................................... 7 3.1.5 Alarm Test................................................................................................................ 8 3.2 Performance Test ............................................................................................................... 8 3.2.1 SpO2 Performance Test ............................................................................................ 8 3.2.2 NIBP Performance Test ........................................................................................... 8 3.2.3 NIBP Leakage Test .................................................................................................. 8 3.2.4 NIBP Calibration...................................................................................................... 9 3.2.5 TEMP Performance Test........................................................................................ 10 3.3 Safety Test........................................................................................................................ 10 3.3.1 Safety Test Procedures........................................................................................... 10 3.3.2 Protective Earth Resistance.................................................................................... 11 3.3.3 Enclosure Leakage Current .................................................................................... 11 3.3.4 Patient Leakage current.......................................................................................... 12 3.3.5 Patient Leakage Current- Single Fault Condition (S.F.C) Mains on Applied Part 13 3.4.1 Cleaning the Monitor and Accessories .................................................................. 14 3.4.2 Maintaining the Battery.......................................................................................... 15 Chapter 4 System Configuration ............................................................................................... 16 4.1 Enter Factory Maintain .................................................................................................... 16 4.2 Enter Demo Mode ............................................................................................................ 16 III

4.3 Default Configuration ...................................................................................................... 16 Chapter 5 System Principle........................................................................................................ 17 5.1 Principle ........................................................................................................................... 17 5.1.1 NIBP....................................................................................................................... 18 5.1.2 SpO2 ....................................................................................................................... 18 5.1.3 TEMP ..................................................................................................................... 19 5.2 Principle Block Diagram.................................................................................................. 19 5.2.1 Main Control Board ............................................................................................... 20 5.2.2 Power Module ........................................................................................................ 31 Chapter 6 Troubleshooting ........................................................................................................ 33 6.1 Monitor Booting Failure .................................................................................................. 33 6.2 Display Failure ................................................................................................................. 34 6.3 Operation Failure ............................................................................................................. 34 6.4 Recorder Failure............................................................................................................... 35 6.5 Network Failure ............................................................................................................... 35 6.6 Power Board Failure ........................................................................................................ 36 6.7 Alarm Failure ................................................................................................................... 36 6.8 Parameter Failure ............................................................................................................. 36 Chapter 7 Disassembling the Monitor....................................................................................... 38 7.1 Tools Required ................................................................................................................. 38 7.2 Replacing Fuses ............................................................................................................... 38 7.3 Disassembling the Main Unit........................................................................................... 40 7.3.1 Separating Front Housing and Rear Housing......................................................... 40 7.3.2 Taking out the Main Frame.................................................................................... 42 7.4 Disassembling Rear Panel Assembly............................................................................... 45 7.4.1 Replacing T2 Module............................................................................................. 45 7.4.2 Replacing the TH Module...................................................................................... 47 7.4.3 Replacing X2 Module ............................................................................................ 48 7.4.4 Replacing Power Module....................................................................................... 49 7.4.5 Replacing Network Module ................................................................................... 50 7.4.6 Replacing Speaker.................................................................................................. 51 7.5 Disassembling Front Panel Assembly.............................................................................. 53 7.5.1 Replacing Main Control Board .............................................................................. 53 7.5.2 Replacing Key Control Board................................................................................ 54 7.5.3 Replacing Extending Key Set Board...................................................................... 55 7.5.4 Replacing LCD Screen........................................................................................... 56 7.5.5 Replacing Alarm LED Board................................................................................. 59 7.5.6 Replacing LCD Driver Board ................................................................................ 59 Chapter 8 Renewal Parts............................................................................................................ 60 Appendix I Specifications ........................................................................................................... 61 IV

M3 Vital Signs Monitor Service Manual

Warranty and Service

Chapter 1 Warranty and Service 1.1 Standard Service EDAN provides a one-year-warranty for the warranted products (accessories are included). The warranty period begins on the date the products are shipped to customers. If a customer promptly notifies EDAN of customer’s warranty claim hereunder, EDAN will either repair, adjust or replace (with new or exchange replacement parts) EDAN’s products. EDAN warrants that any service it provides to customers will be performed by trained individuals in a workmanlike manner.

1.2 Limitation of Warranty Direct, indirect or final damage and delay caused by the following situations for which EDAN is not responsible may void the warranty: ♦ Groupware is dismounted, stretched or redebugged. ♦ Unauthorized modification or misuse. ♦ Damage caused by operating beyond the environmental specifications for the medical product. ♦ Change or remove original serial number label or Manufacturer symbol. ♦ Improper use.

1.3 Service Procedure (1) Fill in the Service Claim Form (SCF). Fill in the SCF with detailed information including: Model Name, Serial Number (SN) and Problem Phenomena. EDAN should not have any obligation to take over the case without this information. The form can be downloaded at: http://www.edan.com.cn or obtained from EDAN’s Service Department. (2) Send EDAN the SCF and Select a Solution. Once the service department receives the fully filled SCF, EDAN’s engineer will offer a solution in three working days. EDAN will follow out the case based on the two conditions below: Within Warranty: There are two options: i) After receiving the Return Material Authorization (RMA) form from EDAN service department, the customer sends EDAN the defective parts and informs about the shipment tracking number. Then we will dispatch new part (s) to your confirmed address with confirmed shipping invoice. -1-



ii) The customer signs the Declaration Form and sends it back by email or fax. This form is legally certificated to make sure the customer or end-user will return the defective parts to EDAN on time. We will, at this option, dispatch the replacement one (s) with confirmed shipping invoice. NOTE: 1 Both Return Material Authorization Form and Declaration Form are offered by EDAN service department once the SCF is confirmed by service engineer. 2 The customer is responsible for freight & insurance charges when the equipment is shipped to EDAN for service, including custom charges. EDAN is responsible for the freight, insurance & custom charges from EDAN to the customer. Out of Warranty: After receiving the RMA form from the service department, the customer sends defective parts to EDAN in advance. We will analyze the problems and discuss with the customer about either repairing or replacing the part (s). Once the maintenance fee is invoiced and paid, we will make sure to dispatch good part (s) to the confirmed address. NOTE: The customer is responsible for any freight & insurance charge for the returned product. (3) Obtain the RMA Form. Before the shipment of the materials, the customer must obtain an RMA form from our service department, in which the RMA number, description of returning parts and shipping instructions are included. The RMA number should be indicated on the outside of the shipping container. NOTE: EDAN should not have any obligation to the end-user or customer who returns the goods without the notification by EDAN’s service department. The sender takes full responsibility for the accounted fee. (4) Send the Parts to EDAN. Follow these recommended instructions: ♦ Please disassemble the parts with anti-static facility, do not touch the parts with naked hand. ♦ Please pack the parts safely before return. ♦ Please put the RMA number on the parcel. ♦ Please describe the returned parts as ‘sample of *****’ and put the total value on the invoice, and note on the invoice as ‘sample, no commercial value’. ♦ Please confirm the invoice with Edan before shipment. ♦ Please send back the parts after EDAN’s confirmation.

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1.4 Contact Information If you have any question about maintenance, technical specifications or malfunctions of devices, do not hesitate to contact us. EDAN INSTRUMENTS, INC. TEL: +86-755-26898321, 26899221 FAX: +86-755-26882223, 26898330 E-mail: [email protected]

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Installation and Safety

Chapter 2 Installation and Safety WARNING Only qualified service engineers can install this equipment. And only service engineers authorized by EDAN can open the shell.

2.1 Environment Requirements The environment where M3 Vital Signs Monitor (hereinafter called monitor) will be used should be reasonably free from vibration, dust, corrosive or explosive gases, extremes of temperature, humidity, and so on. Size

200.8 mm (L)×241 mm (H)×189 mm (D)

Temperature Working

+5 °C ~ +40 °C

Transport and Storage

-20 °C ~ +55 °C

Humidity Working

25% ~ 80% (no condensation)


25% ~ 93% (no condensation)

Altitude Working

860hPa ~ 1060hPa


700hPa ~ 1060hPa

CAUTION 1 If the monitor is installed in a cabinet, allow at least 2 inches (5 cm) clearance around the monitor for proper air circulation; allow adequate accessibility for servicing, and adequate room for visualization and operation. 2 Ensure the monitor is not subjected to any source of strong electromagnetic interference, such as CT, radio transmitters, mobile phones base stations, etc. 3 Do not install the monitor in a flammable atmosphere where concentrations of flammable anesthetics or other materials may occur. 4 Keep the environment clean. Avoid vibration. Keep it far from corrosive medicine, dust area, high-temperature and humid environment.

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2.2 Electrical Requirements Power Supply

Voltage: 100V-240V ~ Frequency: 50Hz/60Hz Pmax: 70VA Battery: 14.8 V/4.4 Ah; 14.8 V/2.2 Ah.

2.3 Safety Requirements The monitor complies with the requirements of the valid version of the system standard IEC/EN 60601-1-1, it is ClassⅠequipment and internally powered equipment. Anti-electroshock degree:

NIBP, SpO2 This symbol indicates that the instrument is IEC/EN60601-1 Type BF equipment. The unit displaying this symbol contains an F-Type isolated (floating) patient applied part providing a high degree of protection against shock, and is suitable for use during defibrillation.

TEMP This symbol indicates that the instrument is IEC/EN60601-1 Type CF equipment. The unit displaying this symbol contains an F-Type isolated (floating) patient applied part providing a high degree of protection against shock, and is not suitable for use during defibrillation. CAUTION 1 SHOCK HAZARD- the power receptacle must be a three-wire grounded outlet. A hospital grade outlet is required. Never adapt the three-prong plug from the monitor to fit a two-slot outlet. If the outlet has only two slots, make sure that it is replaced with a three-slot grounded outlet before attempting to operate the monitor. 2 Do not touch signal input or output connector and the patient simultaneously. 3 Equipment and devices that connect to the monitor should form an equipotential body to ensure effective grounding. 4 Do not switch on the monitor until all cables have been properly connected and verified.

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2.4 Installing the Monitor 2.4.1 Install the Monitor on a Flat Surface Place the monitor on a flat surface. Make sure the surface does not vibrate, and is free of corrosive medicine and dust.

Figure 2-1 M3 monitor on a flat surface

2.4.2 Mount the Monitor on Wall To mount the monitor on a wall, you need to order a Wall Mounting Bracket (02.01.109481). Please refer to that instruction for details of installation.

2.4.3 Install the Monitor on Pole Clamp An Assembling Instruction will be delivered with the 1-piece/4-piece Pole Clamp (02.01.109592 or 02.01.109636). Please refer to that instruction for details of installation.

2.4.4 Install the Monitor on Trolley An Assembling Instruction will be delivered with the Trolley (12.01.109480). Please refer to the instructions for details of installation.

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Test and Maintenance

Chapter 3 Test and Maintenance 3.1 Routine Test An overall check of the monitor, including safety check and functional check, should be performed by qualified personnel every 24 months or after service.

3.1.1 Visual Inspection Before using the monitor: Inspect the monitor and accessories for obvious signs of damage. Check the external cables, power socket and power cable. Do not use the monitor if any damage is detected until the monitor is repaired by the service engineers of EDAN or professional service personnel of the dealer.

3.1.2 Power- on Test Switch on the monitor after it is connected to the power source and check: If the power indicator lights up; If the alarm indicators flicker and if the alarm tone is heard; If some images and characters are missing; If there are bright spots and dark shadows on the LCD screen; If the waveforms, fonts and symbols displayed on the LCD screen are normal. If any failure is detected, refer to section Monitor Booting Failures and Display Failures for details.

3.1.3 Key Test Press the keys on the front panel in turn to check if they work properly. When pressing a key, a corresponding functional display is supposed to be seen onscreen. Refer to M3 Vital Signs Monitor User Manual for details about the key function. You can move the cursor by turning the trim knob clockwise or anticlockwise. Also, you can confirm the operation by pressing the trim knob.

3.1.4 Recording Test Check if the recorder can perform printing without problem. Also, check if all the printed traces are correct and clear on the paper. If any failure is detected, refer to section Recorder Failures for details. NOTE: Please make sure paper is well loaded and the setting is correct before printing.

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3.1.5 Alarm Test Trigger a signal that is higher than the upper limit or lower than the lower limit to activate a physical alarm. Disconnect one of the accessories from the monitor to activate a technical alarm. Check if the audible and visible alarms work properly. If any failure is detected, refer to section Alarm Failures for defective details.

3.2 Performance Test 1 2

WARNING Performance tests must only be carried out by qualified service personnel. If performance of the monitor is in question, conduct an overall performance test according to the instructions offered by the manufacturer.

A functional check should be performed once possible device malfunction emerges or after servicing the device. It is unnecessary to open the device case for functional checks.

3.2.1 SpO2 Performance Test This test checks the performance of the SpO2 measurement. A SpO2 simulator is required for this test. 1.

Connect the monitor and the SpO2 simulator with a SpO2 cable.

2.

Switch on the monitor and the simulator.

3.

Set the SpO2 output in the simulator to 70(%).

4.

Check for the display on the monitor. A difference within the range of ±2% is reasonable.

3.2.2 NIBP Performance Test This test checks the performance of the NIBP measurement. Tools required for this test are: a NIBP simulator, a T-fitting, an extension tube and an artificial limb. 1.

Connect the NIBP simulator to the monitor.

2.

Switch on the monitor and the simulator. Perform calibration prior to using the simulator.

3.

Set the patient type both on the monitor and in the simulator to adult; respectively set the systolic pressure and diastolic pressure (mean pressure) to 255/195(215) mmHg. Start a NIBP measurement.

4.

Check for the display on the monitor. A difference within the range of ±8mmHg is reasonable.

3.2.3 NIBP Leakage Test This test checks leakage of the airway. See Figure 3-1 for details about tools required.

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1.

Connect the cuff securely with the socket for NIBP air hole.

2.

Wrap the cuff around the cylinder with an appropriate size.

3.

Access SYSTEM MENU > MAINTAIN > USER MAINTAIN by inputting the password ABC. Start a leakage test by selecting NIBP MAINTAIN > LEAK TEST.

The system will automatically inflate the pneumatic system to 180 mmHg. After 20 seconds, the system will automatically open the deflating valve, which marks the completion of a pneumatic measurement. If the prompt of Leak Test OK appears, it indicates that the airway is in good situation and no air leaks exist. However if the alarm information of NIBP Cuff Leak appears, it indicates that the airway may have air leaks. In this case, the user should check for loose connection. After confirming secure connections, the user should re-perform the pneumatic test. If the failure prompt still appears, please contact the manufacturer for repair.

Figure 3-1 Diagram for NIBP Leakage Test

3.2.4 NIBP Calibration NIBP calibration must be performed by professional personnel authorized by EDAN. Access SYSTEM MENU > MAINTAIN > USER MAINTAIN by inputting the password ABC. NOTE: NIBP calibration is for checking the measurement accuracy and cannot change the measurement results. Tools required are: a T-fitting, NIBP extension tubes, a cylinder and a manometer. Procedure: 1. Access the NIBP calibration menu according to the above-mentioned instructions. 2.

Connect the equipment as shown below:

Manometer Tube Tube Cylinder

NIBP module / Patient monitor

T-fitting

NIBP extension tube or hose

Figure 3-2 Diagram for NIBP Calibration

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3.

Select NIBP MAINTAIN > CALIBRATE.

4.

Apply fixed static pressure on the monitor with the help of the manometer. Compare the displayed values on the monitor with the manometer values.

5.

A difference within the range of ±3mmHg is reasonable.

3.2.5 TEMP Performance Test This test checks the performance of the TEMP measurement. A resistance box is required. 1. Switch on the monitor and the resistance box. 2. Set the probe type on the monitor to YSI-10K, and respectively connect the probes to channel T1 and T2 connectors. And then connect the probes with the resistance box. 3. Set the resistance value to (6017Ω) 37℃ in the resistance box. 4. A difference within the range of ±0.1℃ is reasonable.

3.3 Safety Test 3.3.1 Safety Test Procedures Use the test procedures outlined here only for verifying safe installation or service of the product. These tests are not a substitute for local safety testing where it is required for an installation or a service event. When performing a safety test, you must use a standard safety analyzer such as Fluke 601Pro Series safety analyzer or equivalent, perform the test according to your local regulations, for example, in Europe according to IEC/EN60601-1, IEC/EN60601-1-1, in USA according to UL60601-1. For the test setup, please refer to the Instructions for Use of the test equipment used. Additional test may be required by your local regulations. You are recommended to document the result of the safety test. NOTE: 1 When testing according to IEC 60601-1, system must be tested and not individual devices. 2

Systems must be handled as devices.

3

A system is a combination of several devices of which at least one is a medical electrical device which is connected to other devices by functional connections or by a transportable multiple socket outlet.

4

With devices that are connected to other devices by means of a data cable, this connection must be disconnected prior to performing the electrical safety check, in order to avoid incorrect measurements.

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3.3.2 Protective Earth Resistance

NOTE: The circuit diagram is based on the Fluke 601Pro series safety analyzer. This measures impendence of Protective Earth (PE) terminal to accessible metal part of Device under test (DUT) which is protectively earthed. A current of 25A is passed for 5s to 10s through the protective terminal and each accessible metal part which is protectively earthed. Allowable value: without mains cable, maximum impendence: 100 mOhms (IEC 60601-1 and UL60601-1)

3.3.3 Enclosure Leakage Current

NOTE: The circuit diagram is based on the Fluke 601Pro series safety Analyzer. - 11 -



This measures leakage current of exposed metal parts of Device under test (DUT) and parts of the system within the patient environment; normal and reversed polarity using S2 test performed both in normal condition and single fault conditions. Normal condition (NC): with S1, S3, S5 closed, S2, S4 variable. Single fault condition (SFC): S1, S3 open (one for each time) and S5 closed, S2, S4 variable. Allowable value: Normal condition: 100µA (IEC/EN60601-1) Single fault condition: 500µA (IEC/EN60601-1) Normal condition: 100µA (UL60601-1) Single fault condition: 300µA (UL60601-1)

3.3.4 Patient Leakage current

NOTE: The circuit diagram is based on the Fluke 601Pro series safety Analyzer. This test measure the leakage current flowing between the selected applied part and the mains PE; the test with normal and reverse polarity, in normal condition and single fault condition. Normal condition (NC): with S1, S3, S5 closed, S2, S4 variable. Single fault condition (SFC): S1, S3 open (one for each time) and S5 closed, S2, S4 variable. Allowable value: Normal condition: 10µA (BF applied part), 10µA (CF applied part) - 12 -



(IEC/EN60601-1, UL60601-1) Single fault condition: 500µA (BF applied part), 50µA (CF applied part) (IEC/EN60601-1, UL60601-1) Leakage Current Applied Part

Normal Condition

Single Fault Condition

Earth Leakage Current

<0.5 mA

<1 mA

Enclosure Leakage Current

<0.1 mA

<0.5 mA

CF

AC: <0.01 mA DC: <0.01 mA

AC: <0.05 mA DC: <0.05 mA

BF

AC: <0.1 mA DC: <0.01 mA

AC: <0.5 mA DC: <0.05 mA

Patient Leakage Current

Patient Leakage Current (Mains on Applied Parts)

CF

<0.05 mA

BF

<5 mA

CF

AC: <0.01 mA DC: <0.01 mA

AC: <0.05 mA DC: <0.05 mA

BF

AC: <0.1 mA DC: <0.01 mA

AC: <0.5 mA DC: <0.05 mA

Patient Auxiliary Current

3.3.5 Patient Leakage Current- Single Fault Condition (S.F.C) Mains on Applied Part NOTE: The following test is based on test with the Fluke 601 pro series safety analyzer. This device allows applying a 110% mains voltage between the applied part and the device PE. When testing with other device, you may need to apply the 110% mains voltage manually.

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NOTE: The circuit diagram is based on the Fluke 601Pro series safety Analyzer. This test measure the current flowing between the applied part and the mains PE in response to an isolate mains voltage (110% of the mains voltage) applied to applied part. This test is performed with normal and reverse polarity of the mains voltage using S2, and normal and reverse polarity of the isolate voltage using S4. Single fault condition: S1, S3, S5 closed, S2, S4, S6 variable. Allowable value: Single fault condition (110% mains voltage on applied part): 5000µA (BF applied part), 50µA (CF applied part) (IEC/EN 60601-1 UL 60601-1)

3.4 Maintenance For details about basic cleaning and maintenance methods, refer to relevant sections in M3 Vital Signs Monitor User Manual. For further technical support, contact service engineers of EDAN. Users are responsible for preventive maintenance and periodic inspection for the monitor.

3.4.1 Cleaning the Monitor and Accessories Refer to relevant sections in M3 Vital Signs Monitor User Manual for details.

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3.4.2 Maintaining the Battery Refer to relevant sections in M3 Vital Signs Monitor User Manual for details.

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System Configuration

Chapter 4 System Configuration The end users can not change the system configuration of the monitor. As a service engineer, you need to change the configuration for them after the monitor is installed and checked properly. NOTE: Restart the monitor after changing the settings.

4.1 Enter Factory Maintain Press the MENU button to display SYSTEM MENU, and then select MAINTAIN > FAC KEY. Input the password 9980 in the ENTER MAINTAIN PASSWORD box and press CONFIRM. Factory maintenance is only available for the service engineers of EDAN or representatives authorized by EDAN. SpO2 DEV/ NIBP DEV/ TEMP DEV: to set the SpO2, NIBP and TEMP module. POWER TYPE: to set the type of power source. RECORDER: this item is available if the monitor is outfitted with a recorder. FACE SELECT: to select the displayed parameters. MODULE SELFTEST: to display module information. UPDATE: for X2 module update.

4.2 Enter Demo Mode Press the MENU button to display SYSTEM MENU, then select MAINTAIN > DEMO. Input the demo password 3 0 4 5 in the ENTER MAINTAIN PASSWORD box and press CONFIRM to enter Demo mode.

4.3 Default Configuration Press the MENU button to display SYSTEM MENU, select SYSTEM MENU > DEFAULT to display the default setup menu. NOTE: Select any item in this submenu to cancel the current setup and use the selected default setup. FAC DEF CONFIG: factory default configuration. USER DEF CONFIG: user-defined default configuration. SAVE CURRENT AS USER CONFIG: Save the current setup as the user default configuration. CONFIRM: Confirm your choice, exit this submenu, and return to the previous menu. - 16 -


System Principle

Chapter 5 System Principle This chapter introduces the structure and principle of the monitor, as well as the principles and port definitions of the modules.

5.1 Principle Parameter module is the basic unit to acquire signals for monitoring parameters in the monitor. The monitoring signals are transmitted to the main control board and subsequently processed by it. The measurement data and waveforms will be displayed on the LCD. The power link board can realize power switching and conversion. The whole system structure is shown in the following figure: Medical staff

LCD

Key control board

Recorder

Display driver board

Network interface board

Main control board

Power supply

NIBP

SpO2

TEMP

Patient

Figure 5-1 System structure

As shown in the figure above, the three parameter modules execute real-time monitoring of NIBP, SpO2, and TEMP respectively by using cuff and measuring cables. The results will be sent to main control board for processing and displayed on the LCD. Hereinafter the function details of parameter monitor will be explained.

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System Principle

5.1.1 NIBP Blood pressure monitors commonly measure arterial pressure, which is produced by the contraction of the heart and constantly changes over the course of cardiac cycle. Three blood pressure values, expressed in millimeters of mercury above atmospheric pressure, are obtained. The systolic pressure is the maximum cycle pressure; which occurs during ventricular contraction. The diastolic pressure is the minimum cycle pressure, occurring during the ventricle’s filling stage between contractions. The means arterial pressure (MAP) is the mean value of the blood pressure over the cardiac cycle. The monitor measures non-invasive blood pressure using the oscillometry method. The following are detailed measurement procedures. Inflate the cuff encircling the upper arm until the pressure in the cuff blocks the blood flow in the artery of the upper arm. Then deflate the cuff gradually according to the requirement of certain arithmetic. With the decreasing of the pressure in the cuff, the artery blood will palpitate with the pulse, which results in palpitation in the cuff. Through the pressure sensor connected with the inflating pipe of the cuff, a palpitation signal palpitating with the pulse will be generated. After being filtered by a high-pass filter (about 1Hz), this signal becomes pulsating signal and is amplified. Then the amplified signal is converted into digital signal by A/D. After using the singlechip to process this digital signal, we may obtain systolic pressure, diastolic pressure and mean pressure. Be careful to choose appropriate cuffs for neonatal, pediatric and adult patients so as to avoid generating measurement error. NIBP module also has protection circuit to prevent the cuff from being inflated to a very high pressure. The following are the main operating modes of NIBP. a.

Adult/pediatric/neonate: select according to the patient shape, weight and age.

b.

Manual measurement/auto measurement/continuous measurement: Manual measurement is also called single measurement. It means the monitor performs only one measurement each time. Auto measurement means to perform one measurement within selected cycle. Time interval can be set to 1, 2, 3, 4, 5, 10, 15, 30, 60, 90, 120, 240 or 480 minutes. Continuous measurement means after being activated, the monitor will perform quick measurement continuously within 5 minutes. Continuous measurement is effective in monitoring changes in blood pressure.

5.1.2 SpO2 SpO2 is based on the absorption of pulse blood oxygen to red and infrared light by means of finger sensor and SpO2 measuring unit. The light-electronic transducer in finger sensor converts the pulse red and infrared light modulated by pulse blood oxygen into electrical signal, the signal is processed by hardware and software of the unit. The PLETH curve and numeral value of SpO2 will be obtained. By tracing the pulse waveform in the fingertip, using specified arithmetic and consulting the clinical data table, we can obtain the SpO2 value. The SpO2 sensor consists of two LEDs and a photodetector. The two LEDs are respectively red diode and infrared diode, which are lighted on according to certain time sequence. When the capillary vessel of the fingertip congests repeatedly, the light of the LED is absorbed by blood vessels and organs and then projected onto the photodetector. The photodetector can detect the light intensity varying with pulse changes and - 18 -


System Principle

display the changing light intensity in the form of changing electronic signals. The ratio between the DC and AC of the two types of signals for light is the proportion of oxygen in the blood. Then we can calculate correct SpO2 value by using specified arithmetic and also calculate pulse rate according to the SpO2 waveform. The SpO2 module mainly consists of the following four parts: sensor, signal processing, control unit of LED driving sequence, singlechip.

5.1.3 TEMP Two optional modules are available for TEMP measurement. The one is T2 module; the other is TH module. Regarding the T2 module, the temperature of human body is first converted into electronic signals, which are then amplified by amplifier and processed. In this way we can obtain the TEMP value. The circuit includes proportional amplifier constructed by operational amplifiers. The temperature passes the thermal sensor, producing pressure signals, which are amplified and transmitted to A/D converter for further processing. The TH module works on the principle of infrared radiation. It can quickly take a temperature in the ear in a non-contact way. The measurement value will be displayed on the LCD of the thermometer within one second and transmitted to the monitor via communication wire. The monitor consequently displays and stores the measurement value.

5.2 Principle Block Diagram The following figure shows the hardware structure of the whole monitor and the connection relationships between different parts. The boards displayed in the figure are the core parts of the monitor, i.e. main control board and parameter board.

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System Principle

Choose one from T2 TEMP and TH TEMP

J1 Infrared insulate board

J2

Infrared ear thermometer

Figure 5-2 Block diagram of the monitor

NOTE: The nurse call board and the network board are optional configurations; they can not be installed at the same time. If you want to use the nurse call function, you should install the nurse call board; otherwise you should install the network board.

5.2.1 Main Control Board The block diagram of main control board is displayed as follows:

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System Principle

LCD

DB，AB


Figure 5-3 Block diagram of the main control board

The M3 main control board is installed on the display holder with the font shell assembly. Its main functions are: 1.

To supply power for the external parameter modules (including NIBP, SpO2 and TEMP module), and to realize communication between each parameter module via serial interfaces;

2.

To control and realize data store and display of parameter modules;

3.

To control data traffic between each interface board (including alarm LED board, network USB board, LED backlight driver patching board ,key control board);

4.

To supply power for the external recorder and realize data traffic between the recorder;

5.

To realize data traffic between the power module PS900K;

6.

To supply voltage for the 5.6" TFT LCD.

There are different ports on the main control board. The port definitions are illustrated as follows.

- 21 -


5.2.1.1

System Principle

Power Input Port

Pin NO. Power input

5.2.1.2

Definition

1

+5V

2

GND

3

GND

4

+12V

Input Port of Power Control Signal

- 22 -


System Principle

Pin NO. Power control

5.2.1.3

Definition

1

MTXD8_POWER

2

MRXD8_POWER

3

GND

4

DISG_CHARGE_POWER

5

DISG_ACON_POWER

6

DISG_SWITCH_POWER

7

GND

8

NC

9

NC

10

NC

X2 Module Port

X2 module

Pin NO.

Definition

1

RS232MRXD0_NIBP&CO2

2

GND

3

RS232MTXD0_NIBP&CO2

4

GND

5

TRTS2_NIBP&CO2

6

VCC_5V

7

VCC_12V - 23 -


5.2.1.4

System Principle

T2 Module Port

Pin NO. T2 Module

5.2.1.5

Definition

1

VCC_5 V

2

GND

3

MTXD7_T2

4

MRXD7_T2

TH Module Port

- 24 -


System Principle

Pin NO. TH Module

5.2.1.6

Definition

1

VCC_5 V

2

GND

3

MTXD7_T2

4

MRXD7_T2

Network Interface Board Port

Pin NO. Network module

Definition

1

RX+

2

RX-

3

TX-

4

TX+

- 25 -


5.2.1.7

System Principle

USB and Nurse Call Ports

Pin NO. USB and Nurse call

Definition

1

GND

2

DSIG_DN0_USB

3

DSIG_DP0_USB

4

VCC_5V

5

GND

6

EXGPIO4_NURSECALL

7

GND

8

VCC_12 V

9

NC

10

NC

- 26 -


5.2.1.8

System Principle

Recorder Port

Pin NO. Recorder

Definition

1

DSIG_NSTB_PRINTER

2

DSIG_PD0_PRINTER

3

DSIG_PD1_PRINTER

4

DSIG_PD2_PRINTER

5

DSIG_PD3_PRINTER

6

DSIG_PD4_PRINTER

7

DSIG_PD5_PRINTER

8

DSIG_PD6_PRINTER

9

DSIG_PD7_PRINTER

10

DSIG_NACK_PRINTER

11

DSIG_BUSY_PRINTER

12

DSIG_PE_PRINTER

13

DSIG_NEER_PRINTER

14

GND

15

GND

16

VCC_12V

17

VCC_12V

18

VCC_12V

19

VCC_5V

20

GND - 27 -


5.2.1.9

System Principle

Key Control Board Port

Pin NO. Key Control Board

Definition

1

DSIG_CHARGE_POWER

2

DSIG_ACON_POWER

3

DSIG_SWITCH_POWER

4

GND

5

MTXD2_KEYBOARD

6

MRXD2_KEYBOARD

7

GND

8

VCC_5V

- 28 -


System Principle

5.2.1.10 FPC Port of LCD

Pin NO. FPC port of LCD

Definition

1

VCC_12V

2

VCC_12V

3

GND

4

GND

5

VCC_5V

6

VCC_5V - 29 -


System Principle


Definition

7

DSIG_PWM_LCD

8

VBB_3V3

9

VBB_3V3

10

GND

11

GND

12

LCD_VD19

13

LCD_VD20

14

GND

15

LCD_VD21

16

LCD_VD22

17

GND

18

LCD_VD23

19

LCD_VD10

20

GND

21

LCD_VD11

22

LCD_VD12

23

GND

24

LCD_VD13

25

LCD_VD14

26

GND

27

LCD_VD15

28

LCD_VD3

29

GND

30

LCD_VD4

31

LCD_VD5

32

GND

33

LCD_VD6

34

LCD_VD7

35

GND

36

LCD_HSYNC

37

LCD_VSYNC

38

GND

39

LCD_VCLK

- 30 -


System Principle


Definition

40

GND

41

LCD_ENAB

42

GND

43

LCD_PWR

44

GND

45

GND

46

LCD_VD0

47

LCD_VD1

48

LCD_VD2

49

DSIG_LIGHTON_5.6LCD

50

GND

5.2.2 Power Module The power module can provide DC power supply to the main control board and recorder. Principle Block Diagram Battery

Fan

Power module

Power control board

Figure 5-4 Block diagram of power board

Principle Introduction This module converts +220 V AC mains power supply or battery power into +5 V and +12 V DC supplies to power other boards. If AC mains and battery coexist, the former take the priority to power the system and charge the latter at the same time.

- 31 -


System Principle

AC/DC Converts high-voltage AC supply into low-voltage DC supply to power subsequent circuits and charge the battery. Battery Control Circuit If AC supply and battery coexist, this circuit controls the output from AC/DC part to charge the battery. If AC supply is disconnected, this circuit controls the battery to power the subsequent circuits. +5 V DC Convert the DC supply from the previous circuit into stable +5 V DC supply to power other boards. +12 V DC Convert the DC supply from the previous circuit into stable +12 V DC supply to power other boards. Power Switch Circuit Control the working status of +5 V DC and +12 V DC in order to control ON/OFF action of the monitor. Voltage Detection Circuit Detects the output voltage of every part in detection circuit, converts analogue signals to digital signals and then send them to main control board for processing.

- 32 -


Troubleshooting

Chapter 6 Troubleshooting In transportation, storage and use of monitor, various factors such as unstable network voltage, changing environmental temperature, falling-down or impact, component aging may all result in monitor failures and therefore affect normal application of the device. In failure conditions, professional personnel with the experience of repairing electronic medical devices should perform component-level upkeep for the failure classification listed in the table below. Component-level upkeep means based on analyzing, replacing or trial-operating the component, we can pinpoint the failure on a certain component of the device, such as power board, main control board, TFT assembly, measuring cable or parameter module, etc. Repair of only some components means component-level repair. The repair operation must be conducted by a service engineer with abundant experience and with the assistance of special equipment and in specific environment and conditions.

6.1 Monitor Booting Failure Phenomenon

Possible Cause

Solution

After switching on, LCD ① Fuse damage (If it has fuse ① Replace fuse has no display; the power on) ② Replace power board indicator is off. ② Power board damage ③ Anchor the short-circuited ③ Component short-circuits. component. No display after power-on Main control board failure or Refer to section 6.2 Display or black screen during display failure. Failure. operation, however, power indicator lights. Operation or Main control measurement function is corresponding disabled. damage. Abrupt switching off.

board or Examine the main control component board and the corresponding components.

① Moment intensive ① Check power supply and interference of network. grounding system. ② Poor performance of power ② board. ③ ③ Poor performance of main control board. ④ ④ Bad connection of power supply or main control board.

- 33 -

Replace power board. Replace board.

main

Replace or connectors.

control repair


Troubleshooting

6.2 Display Failure Phenomenon

Possible Cause

Solution

Characters are displayed Data communication error Replace the main control normally, however between main control board and board or parameter module waveforms are displayed parameter module. based on the error prompt. intermittently. When powering on the ① Malfunction in the circuit of ① Replace the display device, power supply is in the display driver board. driver board. normal operation, however, ② The wire for connecting ② Repair or replace there is no display or the display screen is damaged. connecting wire. screen goes black during ③ Damage of main control board. ③ Replace main control normal operation. board. ④ Damage of power board. ④ Replace power board. LCD displays character.

improper

LCD screen has failure.

Replace the LCD screen.

6.3 Operation Failure Phenomenon

Possible Cause

Solution

Buttons or the rotary Malfunction in the key set on the Replace the key set or key control knob is disabled. key control board. board. Sound of speaker is ① Malfunction in the audio ① Replace the key control board. raucous or there is no subassembly of the key ② Replace the speaker or sound. control board. connecting wire. ② Malfunction in the speaker or connecting wire.

- 34 -


Troubleshooting

6.4 Recorder Failure Phenomenon

Possible Cause

Solution

No paper in the drawer

Load paper and close the drawer.

Press Record but no paper The drawer is open. is out.

Close the drawer. Open the drawer and check if the paper is well loaded. Reload paper and close the drawer.

Paper is jammed.

Recording control board Replace failure. board. Recorder failure.

connection

the

recording

control

Check all the connections.

Gear box/ gear failure.

Replace the gear box or the gear.

Main control board failure.

Replace the main control board.

The detector of recording Clean the detector of recording paper is contaminated. paper. The alarm indicating “out of Detector of recording paper Replace the detector of recording paper” is onscreen, but there failure. paper. is paper in the drawer. The drawer is not fastened Fasten up the drawer. up. Inexact loading of the Load the recording paper exactly. Trace on the recording recording paper. paper is blurred or tilts; or it The two screw nuts on the is blank on the paper. print head are not adjusted Adjust the screw nuts. to balance. Print head failure.

Replace the print head.

6.5 Network Failure Phenomenon ① The monitor can not be linked to the ② network. ③

Possible Cause

Solution

Network linking wire is ① Check and repair network linking damaged wire or the HUB. Network bed NO. conflicts

② Change bed NO.

Main control board failure

③ Replace main control board

- 35 -


Troubleshooting

6.6 Power Board Failure Phenomenon

Possible Cause

Solution

Fuse is burned upon power-on.

Short circuit occurs in power supply or other parts.

Check after power on the monitor.

Fuse is burned although all loads are disconnected.

Power board failure.

Replace power board.

Fuse is burned after connecting a part.

Short circuit occurs in this part.

Replace this part.

6.7 Alarm Failure Phenomenon No audible activated.

alarm

Possible Cause is

① Audio alarm temporarily disabled. ② Speaker connecting failure.

and wire

Solution is its has

① Switch on the audible alarm. ② Replace the speaker or the wire.

The alarm indicator stays off.

Alarm indicator has failure.

Replace the alarm indicator; if there is no alarm indicator for replacing, change the key control board.

No audible alarm or visual alarm is activated.

Program failure

Update the software.

6.8 Parameter Failure Phenomenon

Possible Cause

Solution

NIBP function of X2 ① The connection of X2 ① Check the connection module communication module and main control between boards. stops. board has failure. ② Replace X2 module. ② NIBP function of X2 module ③ Replace main control board. has failure. ③ Main control failure.

board

- 36 -

has


Troubleshooting

NIBP cuff can not be Airway is folded or has leakage. inflated.

Adjust or repair the airway.

Blood pressure can not Cuff becomes loose or patient is Keep the patient quiet, bind the be measured moving. cuff correctly and safely. occasionally. Great error in NIBP ① Cuff size does not fit the ① Use the cuff of appropriate measurement. patient. size. ② X2 module performance.

has

bad ② Replace NIBP module.

SpO2 function of X2 ① Bad connection between X2 ① Check the connection module communication module and main control between boards. stops. board. ② Replace X2 module. ② Malfunction in X2 module. ③ Replace main control board. ③ Malfunction in the main control board. No SpO2 waveform

Sensor or damaged.

X2

module

is Replace the sensor.

SpO2 waveform has ① Patient is moving. ① Keep the patient quiet. strong interference. ② Environment light is very ② Weaken the light intensity in intensive. the environment. SpO2 value is inaccurate Coloring agent has been injected Remove the coloring agent before into patient body. measurement. No TEMP value (for ① Malfunction in TEMP sensor. ① Replace the TEMP sensor. T2 module) ② Malfunction in the connection ② Check the connection. of TEMP sensor. ③ Replace the T2 module. ③ Malfunction in T2 module. No TEMP value (for ① Malfunction TH module) thermometer.

in

the ① Replace the thermometer.

② Check the communication ② Malfunction in the infrared wires. ear TEMP communication ③ Replace the infrared wires. insulated board. ③ Malfunction in the infrared insulated board.

- 37 -


Disassembling the Monitor

Chapter 7 Disassembling the Monitor WARNING 1

Only qualified service personnel can open the monitor case.

2

Switch off the monitor and remove the AC power cable before disassembling the monitor.

3

After any repair of the monitor, perform safety tests before using the monitor again.

7.1 Tools Required A cross-head screwdriver

A flat-head screwdriver

An M3 nut driver

A pair of pliers

7.2 Replacing Fuses To replace the blown fuse in the following procedure: 1) Switch off the monitor and unplug the power cable. 2) Carefully place the monitor upside down on a flat surface covered with cloth or other protecting pad. 3) Place a flat-head screw driver in the gap of the fuse. Apply a certain amount of pressure on the screw driver to sink the fuse for about 1 mm. Unscrew the fuse anticlockwise.

- 38 -



4) Remove the old fuse. Take out a new fuse supplied by EDAN or of the same specification: Size: Ф5mm×20mm; Model: T1.6AL 250V. 5) Place the new fuse in the fuse socket. Press and screw it clockwise back in position.

- 39 -



7.3 Disassembling the Main Unit 7.3.1 Separating Front Housing and Rear Housing 1.

Remove the four screws in rear panel with screwdriver to separate the front housing and rear housing.

M3×25 cross recessed pan head screws

- 40 -


2.


Take apart the front housing and rear housing at the joint, and disconnect the linking wires in order to separate the two parts.

① ② ③ ④ ⑤

①

Wires linking M3A main control board and T2 TEMP module

②

Wires linking X5 board and the recorder

③

Wires of M3 USB and nurse call ports

④

Sonatina (B) sensor ground line

⑤

Cable between speaker and main control board

- 41 -



① ② ③ ④ ⑤

①

Socket for wire linking PS900K and M3 main board power source

②

Socket for the controlling wire of PS900K

③

M3 NIBP wire socket

④

NIBP airway tube socket

⑤

M3 SpO2 sensor wire socket

7.3.2 Taking out the Main Frame 1.

To separate the rear cover, firstly, you should overturn the monitor and remove the fuses as described in section 7.2 Replacing Fuses. Then remove the three screws for securing the main frame and rear housing.

- 42 -



M3×6 cross recessed countersunk head screws

Fuses

2.

Remove the four screws in the main frame and one screw for grounding. Then carefully take out the main frame.


- 43 -




- 44 -



7.4 Disassembling Rear Panel Assembly 7.4.1 Replacing T2 Module To replace T2 module, you should remove it according to the following procedure: 1. Separate the front and rear assemblies according to section 7.3.1 Separating Front Housing and Rear Housing. 2. Remove the two screws securing the T2 module on the rear panel. 3. Remove the wire linking the T2 module and main control board; pull the wire out from the hole in the rear panel. 4. Slide out the block on the T2 module bracket, and then uninstall the bracket from the monitor. Avoid damaging the block when uninstalling.

Screws

- 45 -



Block

Wire linking T2 module and main control board

Block

5. Remove the four screws on the T2 module; and then separate the module from the monitor.

Screws

To replace the T2 module: Install a new T2 module in a reverse procedure.

- 46 -



7.4.2 Replacing the TH Module To replace the TH module, you should remove it according to the following procedure: 1. Separate the front and rear assemblies according to section 7.3.1 Separating Front Housing and Rear Housing. 2. Remove the two screws securing the module on the rear panel. 3. Remove the wire linking the module and main control board; pull the wire out from the hole in the rear panel. 4. Slide out the block on the module bracket, and then uninstall the bracket from the monitor. Avoid damaging the block when uninstalling.

Screws

Block

Infrared ear TEMP communication wire

5. Remove the five screws on the module; and then separate the module from the monitor.

- 47 -



Screws

To replace the TH module: Install a new module in a reverse procedure.

7.4.3 Replacing X2 Module To replace X2 module, you should remove it according to the following procedure: 1. Separate front panel and rear panel assemblies according to section 7.3.1 Separating Front Housing and Rear Housing. 2. Remove the four screws securing the X2 module on the rear panel. 3. Remove the wires, and then take out the X2 module.

- 48 -



Screws

To replace the X2 module: Install a new X2 module in a reverse procedure.

7.4.4 Replacing Power Module To replace power module, you should remove it according to the following procedure: 1. Separate front panel and rear panel assemblies, and take out the main frame as described in section 7.3 Disassembling the Main Unit. 2. Remove the four screws securing the power module on the main frame as the following figure shows:

- 49 -



Screws

To replace the power module: Install a new power module in a reverse procedure.

7.4.5 Replacing Network Module To replace network board in the following procedure: 1. Separate front panel and rear panel assemblies, and take out the main frame as described in section 7.3 Disassembling the Main Unit. 2. Remove the three screws securing the network module and the interface cable, and then take out the network module. - 50 -



Cross recessed pan head screws

To replace the network module: Install a new network module in a reverse procedure.

7.4.6 Replacing Speaker To replace the speaker in the following procedure: 1. Separate front panel and rear panel assemblies, and take out the main frame as described in section 7.3 Disassembling the Main Unit. 2. The speaker is fixed on the rear panel. Remove the two screws securing the speaker, and then take out the speaker.

- 51 -



Speaker

To replace the speaker: Install a new speaker in a reverse procedure.

- 52 -



7.5 Disassembling Front Panel Assembly 7.5.1 Replacing Main Control Board To replace main control board, you should remove it according to the following procedure: 1. Separate front panel and rear panel assemblies according to section 7.3.1 Separating Front Housing and Rear Housing. 2. Remove the flat cable for LCD screen: release the snap-fit on the flat cable, and then remove the flat cable from the FPC interface. Snap-fit

3. After taking off the flat cable for LCD screen, remove the six screws for securing the module, and then remove the main control board.

- 53 -



M3×6 cross recessed screws

To replace the main control board: Install a new main control board in a reverse procedure.

7.5.2 Replacing Key Control Board To replace the key control board, you should remove it according to the following procedure: 1. Separate front panel and rear panel assemblies according to section 7.3.1 Separating Front Housing and Rear Housing. 2. Remove the six screws securing the key control board and the front assembly; take out the key control board.

- 54 -



6-φ3X8 recessed screws

cross tapping

To replace the main control board: Install a new key control board in a reverse procedure.

7.5.3 Replacing Extending Key Set Board To replace extending key set board, you should remove it according to the following procedure: 1. Separate front panel and rear panel assemblies according to section 7.3.1 Separating Front Housing and Rear Housing. 2. Remove the three screws securing the extending key set board and the front assembly; take out the extending key set board.

- 55 -



3-φ3X8 cross recessed tapping screws

To replace the main control board: Install a new extending key set board in a reverse procedure.

7.5.4 Replacing LCD Screen To replace LCD screen, you should remove it according to the following procedure: 1. Separate front panel and rear panel assemblies according to section 7.3.1 Separating Front Housing and Rear Housing. 2. Take out the main control board according to section 7.5.1 Replacing Main Control Board. 3. Remove the four screws securing the display holder and the front housing.

- 56 -



4-φ3X8 cross recessed pan head tapping screws

4. Remove the four screws and take out the LCD holder.

4-φ3X6 cross recessed screws

5. Separate the LCD upward from the display holder.

- 57 -



6. Release the snap-fit of the flat cable, and separate the driver board and the LCD.

Snap-fit

To replace the LCD screen: Install a new LCD screen in a reverse procedure.

- 58 -



7.5.5 Replacing Alarm LED Board To replace the alarm LED board, you should remove it according to the following procedure: 1. Separate the holder and the front shell according to section 7.5.4 Replacing LCD Screen. 2. Remove the two screws and take out the alarm LED board. Cross recessed pan head screws

To replace the alarm LED board: Install a new alarm LED board in a reverse procedure.

7.5.6 Replacing LCD Driver Board To replace the LCD driver board, refer to section 7.5.4 Replacing LCD Screen.

- 59 -


Renewal Parts

Chapter 8 Renewal Parts WARNING Only connect the replaceable parts supplied by EDAN to the monitor

Parts

Part Number

Lithium-ion button cell

21.21.064169

M3 main control board PCBA (debugged)

02.03.451187-10

PS900K Power Board

02.03.112196

PS900K DC conversion board

02.03.112198

PS900K power control board

12.03.112200-11

Proportional valve of NIBP module

11.58.029016

Deflating valve

11.58.40301-13

Pump

11.58.40302

X2 NIBP and SpO2 module assembly

02.01.118001

Speaker

01.14.038010

M3 key control board PCBA (debugged)

12.03.220040-10

M3 extending key set board PCBA

02.02.100343

M3 AT056TN52 display driver board PCBA (debugged)

12.03.109553-10

M3 Alarm LED board PCBA (without firmware)

12.02.451199-10

M3 network interface board PCBA (without firmware)

12.02.451201-10

5.6’’ TFT LCD

01.16.045044-11

FPC wire for M3 LCD driver

01.03.036268-10

Recorder assembly

22.04.240405

T2 TEMP module assembly

02.01.110112

M3 infrared ear temperature holder assembly

22.01.210442

Lithium-ion battery (14.8V, 2200mAh)

21.21.064168

Lithium-ion battery (14.8V, 4400mAh)

21.21.064167

- 60 -


Specifications

Appendix I Specifications Please refer to M3 Vital Signs Monitor User Manual for more information.

- 61 -

Edan M3 - Vital Signs Monitor Service Manual

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