NC3 Service Manual
NC3 Service Manual
NC3 Service Manual
Service Manual
Copyright
Version: A
Statement
Shenzhen Comen Medical Instruments Co., LTD. (“ Comen” or “Comen Company”) possesses the copyright
of the non-published Service Manual, and has the right to handle it as confidential data.This Service Manual
is only used as the reference data for the maintenance. The others have no right to disclose the content of this
Service Manual to any third person.
This manual contains the proprietary information which is protected by copyright law. With copyright
reserved, any person shall not photocopy or duplicate any part of this manual or translate it into any other
language without the prior written permission of Comen Company.
Comen Company shall not assume responsibility for the incidental or consequential damages resulting from
the errors in this manual or from the provision, actual performance and use of this manual. Comen Company
shall not provide the proprietary right vested by patent law to any third party. Comen Company shall not
assume legal responsibility for the legal consequences resulting from violating the patent law and the rights
of any third party.
The content in this manual may be subject to change without further notice.
Return of products
If the products need to be returned to Comen Company, please follow the following steps:
Acquisition of the right to return the goods: Contact the after-sales department of Comen Company, tell it the
number of the instrument made by Comen; this number was printed on the equipment nameplate; if this
instrument number is not legible, the goods returned shall not be accepted. Please specify the instrument
number and production date, and briefly describe the reason for returning the goods.
I
NC3 Vital Signs Monitor Service Manual
Content
Chapter 1 Safety........................................................................................................................................... 1
1.1Safety Information.................................................................................................................................. 1
1.2 Equipment Symbols...............................................................................................................................3
Chapter 2 Warranty and Service...................................................................................................................1
2.1 Warranty Terms...................................................................................................................................... 1
2.2 What is excluded?.................................................................................................................................. 1
2.3 Service Procedure.................................................................................................................................. 2
2.3.1 Fill in the Service Claim Form (SCF)........................................................................................ 2
2.3.2 Send COMEN the SCF and Select a Solution............................................................................3
2.3.3 Obtain the RMA Form................................................................................................................ 3
2.3.4 Send the Parts to COMEN..........................................................................................................4
Chapter 3 Principle Introduction.................................................................................................................. 1
3.1 NC3 System Block Diagram................................................................................................................. 1
3.2 NC3 Hardware Block Diagram............................................................................................................. 2
3.3 Module Introduction.............................................................................................................................. 2
3.3.1 Main Board................................................................................................................................. 2
3.3.2 NIBP Module.............................................................................................................................. 4
3.3.3 AC Power Board:..................................................................................................................... 5
3.3.4Key Board.................................................................................................................................... 6
3.3.5 LED Display............................................................................................................................... 6
3.3.6 Battery Extender......................................................................................................................... 7
3.3.7 Port Board................................................................................................................................... 7
3.3.8 Side Panel(COMEN SpO2 Module)......................................................................................8
3.3.9 Thermometer Wireless Receiver Module...................................................................................8
3.3.10 SPO2 Module............................................................................................................................9
Chapter 4 Troubleshooting........................................................................................................................... 1
4.1Introducion.............................................................................................................................................. 1
4.2 Part Replacement................................................................................................................................... 1
4.3 Monitor Status Check.................................................................................................................... 1
4.4 Software Version Check.........................................................................................................................1
4.5 Fault Prompts Check..............................................................................................................................2
4.6 Troubleshooting Guide.......................................................................................................................... 2
4.6.1 Power On/Off Failures................................................................................................................2
4.6.2 Display Failures.......................................................................................................................... 3
4.6.3 Battery Problem.......................................................................................................................... 3
4.6.4 SPO2 Failures............................................................................................................................. 4
4.6.5 NIBP Failures..............................................................................................................................4
4.6.6 TEMP Module Defective............................................................................................................5
4.6.7 Button failures.............................................................................................................................6
4.6.8 Software Upgrade Failures......................................................................................................... 6
4.6.9 Fault Code Information...............................................................................................................6
Chapter 5 Software Upgrade........................................................................................................................ 6
5.1 Tools....................................................................................................................................................... 2
5.2 Preparation before Upgrade System Software...................................................................................... 2
II
NC3 Vital Signs Monitor Service Manual
III
Chapter 1 Safety
1.1Safety Information
Warning
Caution
To indicate potential danger or unsafe operation. If not avoided, it may lead to mild
personal injury, product malfunction, damages or property loss. It may also give rise to
more severe harm.
Attention
Warning
This monitor is used for monitoring the clinical patients, so only the doctors and nurses
who are qualified through training can use this monitor.
Do not posit the equipment to make it difficult to operate the power plug which uses to
isolate the equipment circuits electrically from the supply mains.
There is no alarm system for the monitor, only provides fault code for reference. And
also it is not suitable for continuous monitoring, please pay close attention to patient’s
condition avoid any delay of the illness.
Before use, the user shall check whether this instrument and its accessories can work
normally and safely.
Please assure the continuous power supply when monitor patient, the data will be lost
when unexpectedly lose power.
Chapter 1-1
Safety
This instrument can only be connected to a power socket with protective grounding. If
the power socket is not connected to grounding conductor, do not use this socket, but use
the rechargeable batteries for power supply.
Do not open the shell 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 Company.
The disposal of packaging materials shall comply with the local laws and regulations or
the waste disposal rules and regulations of the hospital. The packaging materials must
be placed away from the children.
Do not use this instrument at the place where there are flammable articles such as
anesthetic to prevent explosion or fire from happening.
Please carefully install the power lines and the cables for various accessories to avoid the
patient from being constricted or suffocated or the cables from getting entangled and
keep the patient free from electrical interference.
Do not use mobile phone near the monitor, because the mobile phone will generate a
very strong radiation field and disturb the functions of the monitor.
When the monitor is used with HF surgical equipment, the transducer and the cables
must be avoided conductive connection to the HF equipment to protect against burns to
the patient.
The equipment connected with the monitor shall form an equipotential body (the
protective grounding wire is effectively connected).
When the monitor is shared with the electrosurgery unit, the user (doctor or nurse) shall
ensure the patients safety.
The electromagnetic field will affect the performance of this instrument, so the use of the
other equipment near this instrument must meet corresponding EMC requirements. For
example: Mobile phone, X-ray or MRI equipment may be an interference source,
because they will transmit high-strength electromagnetic radiation.
Continuous and prolonged period of monitoring may increase the risk of undesirable
changes in the skin characteristics, such as extremely sensitive, reddening, blistering, or
even pressure necrosis etc.
Caution
To avoid damage to this instrument and guarantee patient safety, please use the
accessories designated in this instruction manual.
Chapter 1-2
Safety
Please properly install or move this instrument and prevent the instrument from being
damaged due to fall, collision, strong vibration or other external mechanical forces.
Before the instrument is switched on, please confirm whether the power supply used
meets the requirements for power supply voltage and frequency designated in the
nameplate label or in the instruction manual of this instrument.
When this instrument and its accessories are about to exceed the service life, they must
be disposed of according to local relevant laws and regulations or the rules and
regulations of the hospital.
Disposal accessories only can be used for one time in case of performance reduction or
cross infection.
Please take out the battery of the monitor and keep properly if long time no use.
Attention
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.
Please place this instruction manual near the instrument for easy and timely reference.
AC power(AC) Neonate
Chapter 1-3
Safety
Input/output Adult
Refer to instruction
No alarm system manual/ booklet NOTE
On ME EQUIPMENT
Protection against
Manufacture vertically falling water
drops
Conformité Européenne
Separate collection for
Complies with medical
electrical and electronic
device directive
equipment
93/42/EEC
Table 1
Table 2
Chapter 1-4
Chapter 2 Warranty and Service
COMEN provides an 18 months warranty for the warranted products (main unit) and 3 months for the
accessories. The warranty period begins on the date products are shipped to customer. If a customer
promptly notifies COMEN of customer’s warranty claim hereunder, COMEN will either repair, adjust or
replace (with new or exchange replacement parts) COMEN’s products. COMEN warrants that any service it
provides to customers will be performed by trained individuals in a workmanlike manner.
The warranty does not cover for the situations caused by the following condition:
Malfunction or damage caused by improper use or man-made failure.
Malfunction or damage caused by unstable or out-of-range power input.
Malfunction or damage caused by force majeure such as fire and earthquake.
Malfunction or damage caused by improper operation or repair by unqualified or unauthorized service
people.
Malfunction or damage caused by use of parts or accessories not approved by COMEN.
Malfunction of the instrument or part whose serial number is not legible enough.
Others not caused by instrument or part it.
Chapter 2-1
Warranty and Service
Figure 1
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 COMEN’s Service Department.
Serial Number
Figure 2
Chapter 2-2
Warranty and Service
Once the service department receives the fully filled SCF, COMEN’s engineer will offer a solution in three
working days. COMEN will follow out the case based on the two conditions below:
Within Warranty:
There are two options:
1) After receiving the Return Material Authorization (RMA) form from COMEN service department,
customer sends COMEN 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.
2) 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 COMEN on time.
We will, at this option, dispatch the replacement one(s) with confirmed shipping invoice.
Attention
Both Return Material Authorization Form and Declaration Form are offered by COMEN
service department once the SCF is confirmed by service engineer.
COMEN for service, including custom charges. COMEN is responsible for the freight,
insurance & custom charges from COMEN to the customer.
Out of Warranty:
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.
Attention
The customer is responsible for any freight & insurance charges for the returned product.
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.
Chapter 2-3
Warranty and Service
Attention
COMEN should not have any obligation to the end-user or customer who returns the goods
without the notification by COMEN’s service department. The sender takes full responsibility
for the accounted fee.
Chapter 2-4
Chapter 3 Principle Introduction
System
Display Measurement
Rear-housing
software
Key board
Mast section
Side panel
Circuit lines
Figure 3
Chapter 3-1
Principle Introduction
LED Port
Battery
Po Po
Port
rt rt
Figure 4
The main board is the heart of the monitor,it is in charge of connections and communications with other
internal modules.
The main board is the heart of the patient monitor. It implements a series of tasks including input & output
control, data storage and processing, display processing, system control, communication management, etc.
Chapter 3-2
Principle Introduction
LED display
Serial port
Audio indicator
Speaker
Indicator lamp
Figure 5
Figure 6
Chapter 3-3
Principle Introduction
NIBP module is in charge of inflate, pressure detection, and overpressure protection, etc.
NIBP
interface
Figure 7
Chapter 3-4
Principle Introduction
Figure 8
Pin Description Working Voltage
J3 6pin,NIBP socket 5V、12V
J1 2pin,gas pump socket 12V
J2 4pin,gas valve socket 12V
Table 4
Figure 9
Pin Description Working Voltage
CN1 2pin,to AC socket 100-240V a.c.
CN2 4pin, to AC/DC power board 15V
Table 5
Chapter 3-5
Principle Introduction
3.3.4Key Board
The button board, located at the lower part of the monitor’s front panel, button board including knob that can
be pressed, knob can be also rotated both clockwise and counter-clockwise, signals are sent to main board
CPU by the single chip processor on button board. It also controls display of power indicator, AC indicator
and charge indicator.
Figure 10
Pin Description Working Voltage
P1 20pin,to main board 5V
J2 10pin,connect with LED cable 5V
Table 6
Figure 11
Chapter 3-6
Principle Introduction
Figure 12
Pin Description Working Voltage
3pin,connect with serial port
J1 /
cable
5pin , connect with battery
J2 11.1V
extender cable
3pin , connect with battery
J3 11.1V
cable
Table 8
Figure 13
Pin Description Working Voltage
Chapter 3-7
Principle Introduction
Figure 14
Pin Description Working Voltage
10pin , connect with J17 on
J1 /
main board
12pin , connect with external
J2 /
12pin SpO2 cable
Table 10
Figure 15
Pin Description Working Voltage
4pin , connect with wireless
J1 3.3V
receiver cable
Table 11
Chapter 3-8
Principle Introduction
There are 3 types of SPO2 modules: COMEN SPO2, Masimo SpO2 and Nellcor SpO2 module.
The SPO2 board implements SPO2 signals collect amplified simulating, relative digital/analog converting
and signal processing.
The pulse extent of optical signal changes during monitoring. SpO2 parameter, pulse rate signal and pleth
waveform will be acquired after calculation. These data will be transmitted to the main board with special
communication protocol.
Figure 16
No. Description Working Voltage
2*5pin,SpO2 module socket 3.3V
2*4pin,SpO2 input socket /
Table 12
Figure 17
Chapter 3-9
Principle Introduction
Figure 18
No. Description Working Voltage
2*5pin,SpO2 module socket 3.3V
2*4pin,SpO2 input socket /
Table 14
Chapter 3-10
Chapter 4 Troubleshooting
4.1Introducion
In this chapter, patient monitor problems are listed along with possible causes and recommended corrective
actions. Refer to the tables to check the patient monitor, 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. For more information on troubleshooting, contact our International After-sale Dept.
Printed circuit boards (PCBs), major parts and components in the patient monitor are replaceable. Once you
isolate a PCB you suspect defective, follow the instructions in 7Repair and Disassembly to replace the PCB
with a known good one and check that the trouble disappears or the patient monitor passes all performance
tests. If the trouble remains, exchange the replacement PCB with the original suspicious PCB and continue
troubleshooting as directed in this chapter. Defective PCB can be sent to us for repair.
Some troubleshooting tasks may require you to identify the hardware version and status of your patient
monitor.
Some troubleshooting tasks may require you to identify the configuration and software version of your
patient monitor
Check the configuration and software version:long press the key enter into maintainance mode
after power on seft test(sound toot),then you can check the modules version on the screen as below:
Chapter 4-1
Troubleshooting
Software
version
NIBP module
version
Temp module
version
Figure 19
Before troubleshooting the patient monitor, check for fault prompts. If a fault message is presented,
eliminate the fault first. For detailed information on the fault prompts, possible cause and corrective action,
refer to the patient monitor’s User Manual.
Chapter 4-2
Troubleshooting
management
Check out the cuff ,the cuff pipe ,or the
The type of the patient is wrong
interface socket
Check out the cuff ,the cuff pipe ,or the
Inflate air The accessories has an air leakage
interface socket
repeat(NO NIBP
Inflatable with numerical display, but the
values )
The NIBP pump has an air leakage value is not stable, it can be seen that the
numerical decline phenomenon
The NIBP module is defective Replace the NIBP module
Check out the type of the patient in the patient
The type of the patient is wrong
management
1.The cuff is tied up so tight or too loose
The NIBP values
The NIBP accessories have leakage 2.The cuff has leakage or is defective
is incorrect
3. The NIBP pipe has leakage
The NIBP module is defective Replace the NIBP module
The main board is defective Replace the main board
Chapter 4-5
Troubleshooting
Chapter 5-6
Performance Verification
The system software is able to be upgraded using serial communication with a PC.
5.1 Tools
Figure 19
b.select“Serial-COM1”,right click “properties”:
Chapter 5-2
Performance Verification
Figure 20
c. Enter into the “properties” window, and select ‘Serial’, and then set the baud rate according to the figure
below:
Figure 21
Click “OK” and return to the window of step a, click “connect” to finish the setting.
4. Unzip the package file that got from COMEN, the program file is suffixed by “.bin”. And remember the
files location that will be used when upgrading the software, do not change the folder name or the file
Chapter 5-3
Performance Verification
name(s) in the folder unless you are informed by COMEN to have the necessary change.
5. Turn off the monitor before software upgrade.
After the preparation work is done,please follow the procedure blow to upgrade the software:
1)Pressing the keys and simultaneously, when the monitor is power on, quickly press any key
in 2s on PC to enter into the burning window(if the operation fails, please do it again):
Figure 22
2)Select”1” in the keyboard of PC to enter into download waiting window as below:
Figure 23
3)Highlight “Transfer”,and select “Send Ymodem”:
Chapter 5-4
Performance Verification
Figure 24
4)Select the upgrade software:
Figure 25
5)Select the upgrade programming, click ‘add’, and the ‘OK(o)’below, start burning the program
automatically, as shown below:
Chapter 5-5
Performance Verification
Figure 26
6)When the process displays “100%”,the system upgrades successfully:
Figure 27
7)After the system update successfully, click the ‘2’ on PC keyboard, and restart the monitor.
Chapter 5-6
Performance Verification
Attention
Make sure you have confirmed with COMEN Customer Service Dept. the software package is
fit for the software upgrade for the monitor.
Make sure the battery capacity is enough or plug on AC power while doing the software
upgrade process, it takes around 2-30 minutes during the whole upgrade.
Do not unplug the serial cables during the software upgrade process.
Chapter 5-7
Chapter 6 Performance Verification
Tools required:
NIBP cuff for adult patient
Appropriate tubing
Cylinder
Follow this procedure to perform the test:
Figure 28
4. Enter the maintenance mode according the steps of “maintenance mode”, press” ” and switch into
detection interface of NIBP module, PR parameter area prompts “150”.
5. Press” ”, start leakage test. The real-time pressure is shown in mean pressure area. Press “ ” to
stop the test if necessary.
6. After test is completed, the monitor will automatically deflate.
If is shown in fault code area that means the test is OK, if is shown, it indicates that the NIBP airway
may have leakages. Check the tubing and connections for leakages, and perform a leakage test again.
Chapter 6-1
Performance Verification
Tools required:
T-piece connector
Appropriating tubing
Balloon pump
Metal Vessel(500±5%ml)
Reference manometer(calibrated with higher than 0.75mmHg)
1. Following this procedure to perform the test:
Figure 30
2. Before inflation, the reading of the manometer should be 0. If not, disconnect the airway and reconnect
it until the readings is 0.
3. Enter “miantenance mode”, press” ” and switch to detection interface of NIBP module, “250” is
4. Press” ”, start test. The real-time pressure is shown in mean pressure area.Press “ ” to stop
Chapter 6-2
Performance Verification
1. Connect SpO2 sensor to the SpO2 connector of the monitor, and set patient type to [Adult] ;
3. Check the PLETH wave and PR reading on the screen and make sure that the displayedSpO2 is within
95%-100%.
4. Remove the SpO2 sensor from your finger and make sure that warning message of SpO2 Sensor Off is
triggered.
Tool Required:
Ambient temperature: 25℃±0.5℃,and let the ear thermometer sit more than 30 minutes.
Preparation: connect between the thermodetector and platinum sensor, and put the probe of sensor into the
sink;
Calibration button
Figure 32
Step 1. Calibration at 25℃
Chapter 6-3
Performance Verification
the battery simultaneously,when the ear thermometer displays “ ”,release the calibration button;
3)Put a lens filter on the probe of thermometer, press the measurement button streak into calibration mode of
25℃;
4 ) Put the probe into the thermotank standing for 20 minutes until the display is steady(display value
changed in the range of ±1 is regarded as steady);
5)After the display value is steady, press the measurement button again, finish the calibration.
Step 2. Calibration at 37℃:
1)Adjust the temperature of sink, and thermodetector steady displays 37℃±0.01℃;
2)Set thermometer to enter into calibration mode of 25℃——keep press the calibration button and install
the battery simultaneously,when the ear thermometer displays “ ”,release the calibration button; And
then press the ejector button (figure 33), after display “ ”, release the ejector;
3 ) Put a lens filter on the probe of thermometer, insert into black body, press the measurement button
twice(the interval is 1s), when the ear thermometer displays 37.0℃, finish the calibration.
Note: the process from you putting the probe in black body to finishing the calibration should be done in
4±1s, or you need to repeat from step 2 to do the calibration at 37℃.
Note: Please keep the ear thermometer close to the monitor for stable signal when wireless connects.
Wireless connection process:
a.The ear thermometer and NC3 monitor are power off. Long press ejector button and press measurement
button at the same time as shown below:
Chapter 6-4
Performance Verification
Figure 33
b. The ear thermometer displays “0C”、“0F”、“0C”、“0F”、“0C”、“SE” in turn as shown below. When displays
“SE”, release the ejector button and streak into the pairing waiting interface as shown in figure35:
Figure 34
Figure 35
c. Press the NC3 power key in 10s, then start the auto pairing between ear thermometer and NC3, the pairing
time is 10s. After pairing successfully, NC3 and ear thermometer display as like the shown in figure 36, if
pairing fails, ear thermometer displays “OFF” and turns off in 1s.
Chapter 6-5
Performance Verification
Figure 36
d. After pairing, ear thermometer streaks into measurement mode. The ear thermometer wirelessly transmits
the temperature value to NC3 monitor; and NC3 monitor displays the value at the bottom of the screen.
Figure 37
e. After pairing, there is no need to pairing again when the NC3monitor and the ear thermometer restart.
Chapter 6-6
Performance Verification
1)Adjust the sink temperature and make the thermodetctor steady displays 37℃±0.01℃;
2 ) Put on the lens filter and insert into black body, press the measurement button, and then record the
measurement value. after 1min, and measure again, do the measurement 3 times like the same, the
measurement error should be in ±0.02℃;
3)Check the measurement value if it is synchronous displayed on the NC3 screen.
4) Finish the test
Chapter 7-7
Disassembling the Monitor
The following section describes the disassembly and reassembly procedures for the monitor and its
components
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. Do not perform any disassembly procedures (other than server removal) with power
applied to the instrument. Failure to adhere to this warning could cause serious injury death.
Before disassembling the monitor, please removing the battery, refer to the chapter 7.6.
Tools required
Torx screwdrivers
Needle Nose Pliers
ESD mat and wrist strap
Cleaning agent
Tweezer
7.1 Disassembling
The monitor contains the modules as below: front-housing elements, main bracket elements, rear-housing
elements, ear thermometer and base elements, serial port support and side panel elements:
Chapter 7-2
Disassembling the Monitor
Front-housing elements contain LED display, buttons, lens, plastic parts, and button silicone parts, etc.:
Chapter 7-3
Disassembling the Monitor
Attention
Do not touch the LCM display and the faceshell with hands.
Try to disassemble the LCM display elements in dustfree room.
Tear the plastic film on the display before using the LCM display.
Chapter 7-4
Disassembling the Monitor
The main bracket elements contain: main board PCBA, AC/DC power board PCBA, NIBP board PCBA
and fixed supporting:
Side panel elements contain: side panel board PCBA, SpO2 board and tube socket of NIBP:
Chapter 7-5
Disassembling the Monitor
Serial supporting elements contain: serial board PCBA, grounding serial fixed supporting, earthing rod, etc.
Chapter 7-6
Disassembling the Monitor
Rear housing elements contain: battery, battery transfer board, ear thermometer wireless receiver, speaker,
AC power socket, plastic parts, etc.
Chapter 7-7
Disassembling the Monitor
Chapter 7-8
Disassembling the Monitor
The elements contain: front housing elements, rear housing elements, probe elements, display elements,
base support elements, etc.
8 Calibration button /
9 Spring needle /
10 Induction Check the lens filter status
11 Rear housing Plastic parts
12 Snap spring /
13 Plastic snap Lens filter disassemble device
14 Metal probe cap Sensor protective device
15 Aluminium radiation Sensor protective device
16 Probe fixed support Sensor protective device
17 Lens filter Accessory
18 Probe plastic parts Sensor protective device
19 Battery piece /
20 7th battery(AAA) 2,3V
21 Battery cover Plastic parts
22 Positive battery piece Positive
23 Negative battery piece Negative
24 Fixed base backboard Plastic parts
25 Fixed base Fixed base
Chapter 7-10