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Summary of Contents for Comen N Series
- Page 1 N-series/NM-series/NMPro-Series Monitors Service Manual Shenzhen Comen Medical Instruments Co., Ltd.
- Page 2 This service manual is a reference for repair of Comen products. No one is allowed to disclose the content of this manual to third parties without approval.
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Page 3: Table Of Contents
2.2 What is Excluded 2.3 Service Procedure 2.3.1 Fill in the RMA Form 2.3.2 Warranty Duration 2.3.3 Send Comen the RMA Form and Select a Solution 2.3.4 Send the Parts to Comen Chapter 3 Principle Introduction 3.1 Overview 3.1.1 Monitor Introduction 3.1.2 System Composition... - Page 4 Service Manual for N-series/NM-series/NMPro-series Patient Monitors 4.6.8 IBP Failures 4.6.9 CO Failures 4.6.10 Software Upgrade Problems 4.6.11 Technical Alarm Messages Chapter 5 Software upgrade 5.1 Preparation before Upgrade System Software 5.2 System Software Upgrade Chapter 6 Performance Verification, Calibration 6.1 NIBP Test 6.1.1 NIBP Leakage Test 6.1.2 IBP Pressure Calibration 6.2 IBP Test...
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Page 5: Chapter 1 Safety
Do not open the outer housing of this instrument to avoid the possible electric shock hazard. The maintenance and upgrading of this monitor must be conducted by the service personnel trained and authorized by Comen. ● The disposal of packaging materials shall comply with the local laws and regulations or the waste disposal rules and regulations of the hospital. - Page 6 Safety explosion or fire from happening. ● Please carefully install the power lines and the cables for various accessories to prevent the patient from being constricted or suffocated or the cables from getting entangled and keep the patient free from electrical interference.
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Page 7: Contraindication
Safety Note Please install the equipment in a place that is convenient for observation, operation, and ● maintenance. This instrument cannot be used at home. ● ● This instrument can be used for one patient only at the same time. ●... - Page 8 Main menu Waterproof level Refer to random files AC indicator lamp Locked Unlocked Warning: Use only cables supplied by Comen. Other Classified collection of cables may reduce the amount electrical and electronic equipment of defibrillation energy delivered to the patient.
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Page 9: Chapter 2 Warranty And Service
Chapter 2 Warranty and Service 2.1 Warranty Terms Comen provides a 24-month (main unit) or 6-month (repetitive accessories) warranty for all authorized products. The warranty period begins on the date the customer purchases the product. If it turns out that your product is defective and you notify us of it within the warranty period, we will either repair or replace (with a new one or the appropriate accessories) our products. -
Page 10: Fill In The Rma Form
If this link expired, ask COMEN Engineer get the new one Comen should only have an obligation to take over the case with this information. The form can be obtained from our company’s Service Department. Ask the COMEN Service Engineer for this Form to Fill up. -
Page 11: Send The Parts To Comen
The customer is responsible for any freight, insurance, and customs charges for the returned product. ● Comen should not have any obligation to the end-user or customer who returns the goods without the notification by our service department. The sender takes full responsibility for the accounted fee. -
Page 12: Chapter 3 Principle Introduction
Chapter 3 Principle Introduction 3.1 Overview 3.1.1 Monitor Introduction The N-series monitors are used for monitoring vital sign parameters such as electrocardiogram (ECG), respiration (RESP), oxygen saturation (SpO ), non-invasive blood pressure (NIBP), invasive blood pressure (IBP), carbon dioxide (CO ), and body temperature (TEMP). -
Page 13: Module Introduction
Principle Introduction 3.2 Module Introduction 3.2.1 Power Switch Board The power switchboard converts AC power to DC power. The monitor gives priority to AC power, and if AC power is unavailable, it will immediately transition to battery power without impairing its functionality. Chart 3-2 Socket Description... -
Page 14: K1 Main Board (Main Control)
Principle Introduction Socket Description Working voltage 15V，5V Connect the infrared plug-in slot to the main board Table 3-2 3.2.3 3.2.3 K1 Main Board (Main Control) The main board is the heart of the patient monitor. It implements a series of tasks including input& output control, data processing, display processing, system control, communication management, printing management and alarming, etc. -
Page 15: Parameter Board
Chart 3-5 Socket Description Working voltage 12V，5V，3.3V Parameter board power supply, communication interface COMEN NIBP air pump socket COMEN NIBP air valve socket COMEN SPO2/NELLCOR SPO2 power supply, communication socket COMEN SPO2/NELLCOR SPO2 signal wire socket Table 3-4 Chart 3-6... - Page 16 Principle Introduction Socket Description Working voltage IBP_C.O. module power supply, 3.3V communication socket ECG signal socket IBP_C.O. module signal socket SPO2、IBP、C.O.signal socket Table 3-5...
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Page 17: Chapter 4 Troubleshooting Guide
Chapter 4 Troubleshooting Guide 4.1 Introduction The troubles we list in this chapter frequently raise difficulties regarding the patient monitor and the actions we recommend can correct most problems, but not all of them. For more troubleshooting information, contact our service department. -
Page 18: Technical Alarm Check
Troubleshooting Guide Chart 4-1 4.5 Technical Alarm Check Before troubleshooting the patient monitor, check for technical alarm messages. If an alarm message is presented, eliminate the technical alarm first according to the User Manual. 4.6 Troubleshooting Guide 4.6.1 Power On/Off Failures Symptoms Possible Cause Corrective Action... -
Page 19: Display Failures
Troubleshooting Guide In general, the AC indicator light’s on-and-off status can be utilized as a signal to figure out whether the connection line and power source are functioning normally. ● The battery indicator does not light The battery status determines how the battery indicator works. If the battery is functioning normally, enough and works alone, the battery indicator flashes at a frequency of 1 HZ, and the battery symbol on the screen displays a battery power indication;... -
Page 20: Ecg Failures
Troubleshooting Guide 4.6.3 ECG Failures Symptoms Possible Cause Corrective Action Check the ECG channel, Lead Type and Lead Type The settings of ECG is incorrect settings ECG cable is defective or is not Replace the ECG Lead connected well The dry skin of patient leads to Replace the electrode plate, clean the skin and paint Lead detachment certain electrode cream... -
Page 21: Resp Failures
Troubleshooting Guide electrodes somewhere dry. ■ Check whether the ECG Lead is rusty, the plug is poorly connected, or the plug pin is broken due to prolonged unplugging. ■ Check whether the ground wire is connected properly and whether there are any other instruments nearby that could interfere with it. -
Page 22: Spo 2 Failures
Troubleshooting Guide how hard the patient breathes; when the patient breathes weakly, the waveform’s amplitude seems low. ■ The ECG module is defective. Table 4-4 4.6.5 Failures Symptoms Possible Cause Corrective Action The SPO probe is defective Replace the SPO probe The SPO probe and the SPO... -
Page 23: Temp Failures
Troubleshooting Guide Check if the patient type matches the use of the cuff The type of the patient is wrong in the patient type display area The accessories have air Check if the cuff, cuff tube or interface is leaking, Inflate air leakage and replace the accessory that has air leakage. -
Page 24: Ibp Failures
Troubleshooting Guide The TEMP probe is damaged or Change another TEMP probe poorly connected NO TEMP values on the The type of TEMP probe is Select the right type of TEMP probe during monitor display screen incorrect maintenance The TEMP module is defective Replace the Parameter board The type of TEMP probe is Select the right type of TEMP probe during monitor... -
Page 25: Co Failures
Troubleshooting Guide 4.6.9 Failures Symptoms Possible Cause Corrective Action analyzer does not be reset Zeroing must be done before use to zero Large CO Select the standard ones based on local height: O reading errors compensation, pambient, altitude, and equilibrium The settings are incorrect gas, which can be set by referring to the “Barometric Pressure Conversion Table”... -
Page 26: Chapter 5 Software Upgrade
Wait a few minutes, the screen shows “update finished, please remove usb device and reboot”, reboot. Note Make sure you have confirmed with Comen’s Customer Service Department the software package is ● fit for the software upgrade for the monitor you are currently operating on. -
Page 27: Chapter 6 Performance Verification, Calibration
Chapter 6 Performance Verification, Calibration 6.1 NIBP Test 6.1.1 NIBP Leakage Test Tools required: ● NIBP cuff for adult patient ● Appropriate tubing ● Cylinder Follow this procedure to perform the test: Connect the NIBP cuff with the NIBP socket on the monitor. Wrap the cuff around an appropriately sized cylinder. -
Page 28: Ibp Test
Performance Verification, Calibration Connect the monitor, manometer, balloon pump and metal vessel (in place of the cuff) as shown below. Standard Monitor manometer Tubing Metal vessel Balloon pump Chart 6-2 Before inflation, the reading of the manometer should be zero. If not, open the balloon pump to let the whole airway open to the atmosphere. -
Page 29: Temp Test
Performance Verification, Calibration lights of ST status indicator go out at the same time), the verification instrument displays “HELLO”, press S+SU key of the verification instrument to make the project indicator “7” light up, input 0.5 mV, input 30 bpm, adjust the output signal of the verification instrument, if the output HR value is 15 bpm in adult mode, the display result of the monitor should be within the following range: 14-16 bpm;... - Page 30 Performance Verification, Calibration connect the output of the respiratory rhythm to the inlet of the CO module through a gas cylinder. Connect the test system as follows: Tubing Open to the air Air valve Display screen Gas cylinder Chart 6-3 Open the relief valve of the standard gas cylinder and use the monitor knob to enter the CO menu to select the measurement function;...
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Page 31: Chapter 7 Maintenance And Disassembly
(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. Caution High voltage -- Voltages dangerous to life are present in the instrument when it is connected to the mains power supply. -
Page 32: Remove Plug-In Box
Maintenance and Disassembly during assembly. 7.3 Remove plug-in box Warning ● Prior to removing any internal parts or components of the instrument, the battery needs to be taken out of the monitor in order.. ● The battery can be disassembled alone. ●... -
Page 33: Remove The Rear Housing
Maintenance and Disassembly Chart 7-2 Chart 7-3 7.5 Remove the rear housing Remove the 4 PM3 x 6 mm screws from the rear housing using a power wrench or screwdriver as shown below:... - Page 34 Maintenance and Disassembly Chart 7-4 Remove a PWM3× 8 mm screws from the plastic bottom and front housing using a power wrench or screwdriver as shown below: Chart 7-5 Remove the five screws around the rear housing and the bottom, as shown below: Chart 7-6...
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Page 35: Remove Infrared Transmitting Board
Maintenance and Disassembly 7.6 Remove infrared transmitting board Refer to section 7.5 Remove the rear housing; Disconnect the connection cables from the infrared transmitting board. Remove the five screws on the plug-in box, take out the plug-in box, remove the four screws on the infrared transmitting board, as shown below: Chart 7-7 7.7 Remove the main board... -
Page 36: Remove The Ac Power Board
Maintenance and Disassembly Chart 7-8 Chart 7-9 7.8 Remove the AC power board Refer to section 7.5 Remove the rear housing; Remove the four screws on the AC power board, remove the AC power board, as shown below:... -
Page 37: Remove The Parameter Board
Maintenance and Disassembly Chart 7-11 7.9 Remove the parameter board Remove the four screws to remove the parameter board, as shown below:... -
Page 38: Chapter 8 Components
Chapter 8 Components 8.1 Introduction This chapter provides patient monitor exploded views and parts descriptions for the purpose of illustrating the assembly relationship to make it easier for maintenance staff to remove and replace parts This listing only includes the exploded view of the largest configuration, and the components breakdown lists the number of maximally assembled parts. -
Page 39: N12Mexploded View
Components Speaker assembly Power module Battery cover Main control assembly Table 8-1 8.2.2 N12M exploded view Chart 8-2 Material No. Material name Handle Handle mounting bracket Rear housing Side panel assembly Base plate Printer assembly module Speaker assembly Battery module Battery cover assembly... - Page 40 Components Main control assembly Plug-in box assembly Table 8-2...
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