Related Manuals for Comen H3
Summary of Contents for Comen H3
- Page 1 Shenzhen Comen Medical Instruments Co., Ltd Electrocardiograph Service Manual Shenzhen Comen Medical Instruments Co., Ltd...
- Page 2 Shenzhen Comen Medical Instruments Co., Ltd Intellectual Property Statement Factory owns the intellectual property rights to this product and this manual. This manual may refer to information protected by copyrights or patents and does not convey any license under the patent rights of factory.
- Page 3 Shenzhen Comen Medical Instruments Co., Ltd Preface Manual Purpose This manual provides detailed information about the assembling, disassembling, testing and troubleshooting of the equipment to support effective troubleshooting and repair. It is not intended to be a comprehensive, in-depth explanation of the product architecture or technical implementation.
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Page 4: Table Of Contents
2.2 What is excluded..........................10 2.3 Service Procedure........................... 11 2.3.1 Fill in the Service Claim Form (SCF)................. 11 2.3.2 Send COMEN the SCF and Select a Solution..............11 2.3.3 Obtain the RMA Form......................12 2.3.4 Send the Parts to COMEN....................12 2.3.5 Contact Information......................13 Chapter 3 Principle Introduction......................14... - Page 5 Shenzhen Comen Medical Instruments Co., Ltd 5.2 Preparation before Upgrade System Software................25 5.3 System Software Upgrade.......................25 Chapter 6 Performance Verification..................... 26 6.1 Safety Test............................26 6.2 Performance Test..........................26 6.2.1 ECG Performance test......................26 6.2.2 Print speed test........................27 6.2.2.1 Standard request....................... 27 6.2.2.2 Test method......................
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Page 6: Chapter 1 Safety
Shenzhen Comen Medical Instruments Co., Ltd Chapter 1 Safety 1.1 Safety Information The design of the Three-Channel Electrocardiograph H3 complies with international standard IEC 60601-1 Medical Electrical Equipment: General Requirements for Safety and IEC 60601-2-25 General Requirements of the Electrocardiograph. The classification of this equipment is class I and type CF which complies with IEC 60601-1Regulations of the Protection against Electric Shock and it has the function of defibrillation protected. -
Page 7: Danger
Shenzhen Comen Medical Instruments Co., Ltd 1.1.1 Danger There are no dangers that refer to the product in general. Specific “Danger” statements maybe given in the respective sections of this manual. 1.1.2 Warning Warning This monitor is used for monitoring the clinical patients, so only the doctors and nurses who are ... -
Page 8: Cautions
Shenzhen Comen Medical Instruments Co., Ltd period. Before reusing these cables, check whether the function is normal. The equipment connected with the monitor shall form an equipotential body (the protective grounding wire is effectively connected). When the monitor is used in conjunction with the electrosurgical unit, the user (doctor or ... -
Page 9: Equipment Symbols
Shenzhen Comen Medical Instruments Co., Ltd Please install the equipment in a place that is convenient for observation, operation and maintenance. This instruction manual introduces the product according to the most complete configurations. The product you have purchased may not possess some configurations or functions. -
Page 10: Chapter 2 Warranty And Service
Chapter 2 Warranty and Service 2.1 Warranty Terms COMEN provides warranty for the device (main unit) and the accessories. The warranty period begins on the date products are shipped to customer. If a customer promptly notifies us of customer’s warranty claim hereunder, we will either repair, adjust or replace (with new or exchange replacement parts) our products. -
Page 11: Service Procedure
Fill in the SCF with detailed information including: Model Name, Serial Number (SN)and Problem Phenomena. COMEN should not have any obligation to take over the case without this information. The form can be gotten from our company’s Service Department. 2.3.2 Send COMEN the SCF and Select a Solution Once the service department receives the fully filled SCF, our engineer will offer a solution in three working days. -
Page 12: Obtain The Rma Form
After receiving the RMA form from the service department, the customer sends defective parts to COMEN 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. -
Page 13: Contact Information
Shenzhen Comen Medical Instruments Co., Ltd 2.3.5 Contact Information If you have any question about maintenance, technical specifications or malfunctions of devices, do not hesitate to contact us. COMEN International After-Sale Dept. Monday to Friday 09:00-18:00 (UTC +08:00) ... -
Page 14: Chapter 3 Principle Introduction
Shenzhen Comen Medical Instruments Co., Ltd Chapter 3 Principle Introduction 3.1 H3 System Principle Block Diagram USB device AC input Network USB interface interface Equipoten AC Jack tial Jack LCD screen Main board Power board User Touch screen Recorder Patient... -
Page 15: H3 Ecg Board
Shenzhen Comen Medical Instruments Co., Ltd The bottom board is in charge of connections and communications with other internal modules. PIN ID Description Working Voltage To LCD screen(LVDS) 17.2V(TP85),9.8V(TP86),-7V( TP84) CON10 To ECG board 15V,3.3V To power board To screen backlight 8.5V... -
Page 16: H3 Power Supply Board
Shenzhen Comen Medical Instruments Co., Ltd PIN ID Description ECG socket to main board Working voltage 15V, 3.3V Measure ECG data, And data Module Function exchange with the main board through CON10 port 3.2.3 H3 Power supply board The power module transforms the input power into DC and then forwards them to each component of the patient monitor. -
Page 17: H3 Button Board
Shenzhen Comen Medical Instruments Co., Ltd PIN ID AC input socket To main board Description socket Working voltage 100-240V(AC) Supply power to main board Module Function 3.2.4 H3 Button board The button board, located at the right part of the monitor’s front panel, signals are sent to main board CPU by the single chip processor on button board. - Page 18 Shenzhen Comen Medical Instruments Co., Ltd PIN ID PIN ID To main board J3 To Printer Description Description 8.4V（TP56）,5V(TP30) Working voltage Working voltage...
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Page 19: Chapter 4 Troubleshooting
Shenzhen Comen Medical Instruments Co., Ltd Chapter 4 Troubleshooting 4.1 Introduction In this chapter, electrocardiograph problems are listed along with possible causes and recommen- ed corrective actions. Refer to the tables to check the electrocardiograph, identify and eliminate the troubles. The troubles we list here are frequently arisen difficulties and the actions we recommend can correct most problems, but not all of them. -
Page 20: Troubleshooting Guide
Shenzhen Comen Medical Instruments Co., Ltd message, possible cause and corrective action, refer to the electrocardiograph’s User Manual. 4.6 Troubleshooting Guide 4.6.1 Power On/Off Failures Symptoms Possible Cause Corrective Action Check that AC power is properly AC power cable not connected connected. -
Page 21: Battery Problem
Shenzhen Comen Medical Instruments Co., Ltd 1. Check that the socket between the key board and the Motherboard is correctly Cables defective or poorly connected. Integrated display is connected. 2. Check that the LCD cable is correctly blank and the connected. -
Page 22: Ecg Failures
Shenzhen Comen Medical Instruments Co., Ltd Touch screen defective Replace the touchscreen Motherboard defective Replace the Motherboard Calibrate the touchscreen. You can refer Touch screen not calibrated to the user manual. Touch position is invalid Touch screen defective. Replace the touchscreen 4.6.5 ECG failures... -
Page 23: Button Failures
4.6.6 Button Failures Symptoms Possible Cause Corrective Action Touch the screen to confirm if the H3 machine Button board failure is working, then replace the button board main board &key board Replug the port or replace the key board if key... -
Page 24: Software Upgrade Problems
Shenzhen Comen Medical Instruments Co., Ltd 4.6.8 Software Upgrade Problems Symptoms Possible Cause Corrective Action Upgrade software is damaged Get new software from manufacturer Check the software name to make sure Software name is incorrect there is no error, specially the capital... -
Page 25: Chapter 5 Software Upgrade
Restart the monitor and check the software version; NOTE Make sure you have confirmed with COMEN Customer Service Department the software package is fit for the software upgrade for the monitor you are currently operating on. Disconnect the ECG from patient before software upgrade;... -
Page 26: Chapter 6 Performance Verification
Shenzhen Comen Medical Instruments Co., Ltd Chapter 6 Performance Verification 6.1 Safety Test Safety tests should be performed by qualified personnel every 6 to 12 months, and each time after service use a standard safety tester to perform safety tests. The tester must comply with IEC/EN 60601-1 or the local standards and statutes. -
Page 27: Print Speed Test
Shenzhen Comen Medical Instruments Co., Ltd 2) Connect the lead cable and the simulator as shown below: 3) Switch on the electrocardiograph and ECG-1C Simulator. 4) Make sure the simulator is connected with the ground. 5) Set the ECG AC Filter, EMG Filter and DFT Filter off, and default the print speed for 25mm/sec, SENS value for 10mm/mv. - Page 28 Shenzhen Comen Medical Instruments Co., Ltd d）Set the print speed as10mm/s,and set the signal frequency as 10Hz±1%, repeated test. e) Set the print speed as 12.5mm/s,and set the signal frequency as 12.5Hz±1%, repeated test. f) Set the print speed as 50mm/s, turn off the AC filter, and set the signal frequency as 50Hz±1%,...
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Page 29: Chapter 7 Disassembly Procedure
Only qualified service personnel (biomedical engineers or technicians) should open the monitor housing, remove and replace components or make adjustments. If your medical facility does not have qualified service personnel, contact COMEN or your local COMEN representative. Caution High-Voltage – Voltages dangerous to life are present in the instrument when it is connected to the mains power supply. -
Page 30: Separating The Front And Rear Housing
Shenzhen Comen Medical Instruments Co., Ltd 7.3 Separating the Front and Rear Housing Removing the Battery as described in Chapter 7.2; Picking out the rubber cap in the screw holes; Unscrew the 4 PM 3.0*6.0mm screws;... -
Page 31: Removing The Ecg Board
Shenzhen Comen Medical Instruments Co., Ltd 7.4 Removing the ECG board Removing the Battery as described in Chapter 7.2; Separating the front and rear housing as described in Chapter 7.3; Removing the connecting cable with main board; Unscrew the 1 PWB 3.0*5.0mm screw, 1PWM 3.0*6.0mm screw, 1 PM 3.0*5.0mm screw. - Page 32 Shenzhen Comen Medical Instruments Co., Ltd 6. Removing touch screen cable, LCD screen cable, power board connecting cable, LCD light cable; 7. Unscrew the 6 PWM 3.0*6.0mm screws; 8. Separating the main board and the key board.
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Page 33: Removing The Power Supply Board
Shenzhen Comen Medical Instruments Co., Ltd 7.6 Removing the Power supply board 1. Removing the Battery as described in Chapter 7.2; 2. Separating the front and rear housing as described in Chapter 7.3; 3. Removing the ECG board as described in Chapter 7.4;... -
Page 34: Removing The Lcd Screen & Touch Screen
Shenzhen Comen Medical Instruments Co., Ltd 7.7 Removing the LCD Screen & Touch screen Caution: Do not touch the LCD & touchscreen panel Disassemble the LCD in an environment as dust-free as possible Touchscreen panel is fragile, be careful in installation or disassembly 1. - Page 35 Shenzhen Comen Medical Instruments Co., Ltd 9. Removing the LCD screen; 10. Removing the touch screen.
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Page 36: Removing The Recorder
Shenzhen Comen Medical Instruments Co., Ltd 7.8 Removing the Recorder 1. Removing the Battery as described in Chapter 7.2; 2. Separating the front and rear housing as described in Chapter 7.3; 3. Removing the ECG board as described in Chapter 7.4;... - Page 37 Shenzhen Comen Medical Instruments Co., Ltd 8. Separating the printer engine and the printer support; 9. Taking out the printer door pushrod and two spindles;...
- Page 38 Shenzhen Comen Medical Instruments Co., Ltd 10. Removing the printer paper using finger slide slightly;...
- Page 39 Shenzhen Comen Medical Instruments Co., Ltd 11. Removing the folding paper pressure lever.
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Page 40: Chapter 8 Maintenance
Shenzhen Comen Medical Instruments Co., Ltd Chapter 8 Maintenance 8.1 Maintenance Checks Before use of the ECG, or every 6-12 months or after each maintenance or upgrade, a comprehensive check, including functional safety check, of the device should be carried out by qualified technical maintenance personnel having received training. - Page 41 Shenzhen Comen Medical Instruments Co., Ltd Test and Maintenance Items Frequency Carry out safety check according to IEC At least once every two years. After drop of monitor, 60601-2 replacement of power supply or as needed. ECG synchronism between monitor and At least once every two years or as needed.
- Page 42 Shenzhen Comen Medical Instruments Co., Ltd 8.3 Appendix System Alarm Messages 8.3.1 System Prompt Messages ALARM MESSAGE ALARM LEVEL CAUSE Lead off None Leads fall off form patient’s body Low Battery None Low battery Sampling / printing None The data is being sampled or...
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Page 43: Chapter 9 Explosion Figure
Shenzhen Comen Medical Instruments Co., Ltd Chapter 9 Explosion Figure 9.1 H3 Explosion Figure H.REV. DESCRIPTI DESIGN CHECK APPROVAL 043-001238-00 H3 Battery compartment cover Hand writing Battery... - Page 44 Shenzhen Comen Medical Instruments Co., Ltd 043-001240-00 Hand writing pen cover 043-001231-00 H3 bottom cover H3 spindle unit H3 wifi board H3 printer unit H3 main board H3 ECG board AC power H3 function button board H3 LCD screen unit...
- Page 45 Shenzhen Comen Medical Instruments Co., Ltd...
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Questions and answers
I have comen h3 ECG machine. I have problem in recording ECG. It doesn't show ECG baseline and can't record any potential. I have changed ECG module to initial position. Unfortunately it didn't fix problem. I need help to fix it
To fix the ECG recording issue on your Comen H3 ECG machine where the baseline is not shown or no potential is recorded, follow these steps:
1. Check ECG Cable and Electrodes
- Ensure the ECG cable is properly connected to the machine.
- Verify that electrodes are correctly placed on the patient and have good skin contact.
- Replace any damaged cables or electrodes.
2. Inspect Lead-Off Detection
- The ECG board processes signals and includes lead-off detection.
- If lead-off is detected, ensure all leads are securely attached and making good contact.
3. Verify Power Supply
- Ensure the power module is functioning correctly and the machine is receiving the required voltage (15V, 3.3V).
- If running on battery, check if the battery is charged or switch to AC power.
4. Check Signal Processing Components
- The ECG board includes signal amplification, A/D conversion, and control circuits.
- If there is no signal, there may be an issue with amplification or conversion. Restart the device and check if the issue persists.
5. Perform a System Restart
- Turn off the machine, wait a few seconds, and restart it to reset the control circuits.
6. Refer to Troubleshooting Guide
- If the issue continues, refer to the troubleshooting section of the manual for additional possible causes and corrective actions.
If none of these steps resolve the issue, contact Comen’s after-sales service with the device’s serial number for further assistance.
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@Mr. Anderson It doesn't work any suggestions you have counted
It doesn't work any suggestions you have counted above. Is there other way to solve?
For a Comen H3 that is not working, follow these troubleshooting steps:
1. Recorder Failures:
- If paper is reversed: Re-install the paper roll.
- If the record door does not close properly: Check the door and indicator light.
- If the wrong paper type is used: Install the correct paper.
- If there is no printout:
- Check the cable between recorder and keyboard.
- Ensure cable and connector are not damaged.
- Check if the power module outputs 5VDC and 12VDC correctly.
- If power supply failure: Contact service department.
- If paper roll is not properly installed: Re-install the paper roll.
- If print quality is poor:
- Clean the thermal printhead.
- Replace the printhead if necessary.
2. Software Upgrade Problems:
- If the upgrade software is damaged: Get new software.
- If the software name is incorrect: Check for naming errors, especially capital letters.
- If incorrect software is used: Use the correct software for the ECG machine.
- If the USB stick is defective: Replace the USB stick.
- If the software is damaged or has the wrong name: Check the name or change the software.
- If “no system tips” appear: Test the USB stick and software on another ECG, then check the USB socket.
- If the mainboard is defective: Replace the mainboard.
3. Technical Alarm Messages:
- Refer to the user manual for specific alarm messages.
These steps address common hardware and software issues.
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