z Indicates a potential hazard or unsafe practice that, if not avoided, could result in
death or serious injury.
CAUTION
z Indicates a potential hazard or unsafe practice that, if not avoided, could result in
minor personal injury or product/property damage.
NOTE
z Provides application tips or other useful information to ensure better maintenance
operation.
1-1
1.1.1 Warnings
WARNING
z Disassembly and repair of this product should be conducted by Mindray DS
authorized personnel only.
z To avoid explosion hazard, do not use the equipment in the presence of
flammable anesthetics, vapors or liquids.
z Follo w the applicable wa ste contro l re gulations to dispose of the package
material and keep it out of children’s reach.
z The equipment must be connected to a properly installed power outlet with
protective earth contacts only. If the installation does not provide a protective
earth conductor, disconnect the equipment from the power line and opera te it
on battery power, if possible.
1.1.2 Cautions
CAUTION
z Magnetic and electrical fields are capable of interfering with the proper
performance of the equipment. For this reason, make sure that all external
devices operated in the vicinity of the equipment comply with the relevant EMC
requirements. Mobile phones, X-ray equipment or MRI devices are possible
sources of interference as they may emit higher levels of electromagnetic
radiation.
z Before connecting the equipment to the power line, check that the voltage and
frequency ratings of the power line are the same as those indicated on the
equipment’s label or in this manual.
z Protect the equipment from damage caused by drop, impact, strong vibration or
other mechanical force during servicing.
1.1.3 Notes
NOTE
z Refer to Operation Manual for detailed operation and other information.
1-2
1.2 Equipment Symbols
Attention (Consulting this
manual).
Power On/Off
Alternating current (AC)
Battery indicator
Type CF applied part.
Defibrillator-proof
NIBP start/stop button
Patient Information
Up button
Confirm button
Down button
Pulse Rate (PR)
Neonate
Pediatric
Adult
Main menu
Set alarms
Display Tabular Trends/Pleth
Wave
NIBP interval
Record
Alarm Silence
Equipotential grounding
Nurse Call connector
RS-232 connector
Date of manufacture
Serial number
Network connector
1-3
FOR YOUR NOTES
1-4
2 Theory of Operation
2.1 Introduction
The monitor is intended for monitoring the patient’s vital signs including non-invasive blood
pressure (NIBP), pulse oxygen saturation (SpO
paediatric and neonatal patient. It is also designed to monitor the temperature Temp) for
single adult and paediatric patient.
2.2 System Structure
The whole system consists of mechanical parts, hardware and software, as follows:
) and pulse rate (PR) for single adult,
2
System
MechanicalHardwareSoftware
Main unit
Recorder
Battery
chamber
Temp
module
charmber
Barcode
scanner
support
Main board
Power board
Key&display
Parameter
boards
Recorder
board
Barcode
scanner
System
software
Parameter
software
Upgrade
software
Print
software
Gateway
software
2-1
The system’s PCBAs are connected as shown below:
2-2
2.3 Hardware Structure
The monitor’s hardware structure is shown in the figure below.
Key&display
board
LED &
KEY
LCD
Power
supply
NIBP module
Speaker
SpO2 module
Isolation power
board *
Communication/p
ower supply
Recorder
TEMP module
Main board
Fan
Communication/p
ower supply
Ethernet
RS232
NurseCall
Battery
Power board
VS-800
* Mindray SpO2 module does not require the isolation power board.
The core of the system is the main board which provides power supply for all parameter
modules. The parameter modules directly communicate with the main board, and the
measurements and status of all modules are processed by the main board and then displayed
on the key&display board. The main board also controls communication with the speaker, the
recorder and all the external connectors.
AC
2-3
2.3.1 Main Board
The main board provides resources and supports for the overall system. It controls LCD,
LED, keyboard, speaker and recorder. It also enables to communicate with parameter
modules and connectors.
2.3.1.1 Principle Diagram
Watchdog
Ethernet
Nurse Call
Speaker
PHY
RTL8201
CPU
Audio process
circuit
RTCE2PROM
SPI
Serial port 0
RS232 IC
RS232
Serial port 1: NIBP
FlashSDRAM
FPGA
1.5V
Linear power
3.3V
5.0V
12V
LCD
LED
KEY
2.3.1.2 Function Description
The main board communicates with all the parameter modules and the recorder through
FPGA extended serial port.
The main board supplies information through FPGA for the key&display board to display; it
detects the keys and implements user interface.
The main board controls the alarm indicator via FPGA and the signal wire is adapted from
key&display board.
The main board controls the speaker to give audible alarm, key tones and Pitch Tone.
The main board provides nurse call connector, network connector and R232 connector.
The real-time clock is implemented by the RTC chip. The RT clock is powered according to
the priority of AC mains, battery, and button cell on the main board. This ensures the normal
working status of the clock in the event that AC mains and batteries are not available.
SDRAM is responsible for storing data temporarily and running programs. Flash serves as
the system memory and trend data memory whereas EEPROM services as the device
configuration memory.
Serial port 2: SpO2
Serial port 3: Temp
Serial port 4: Recorder
2-4
2.3.2 Power Board
The power board converts the input power (AC mains or battery) to different working
voltages for other boards; it also has the function of charging battery.
2.3.2.1 Principle Diagram
AC
input
EMI
filter
controller
PWM
Rectifer &
filter
Flyback
converter
Current
detection
Coupler feedback
& isolation circuit
Rectifier
& filter
OVP&OPP
16.8V
DC/DC
converter
DC/DC
converter
Charging
circuit
DC/DC
converter
Switch
circuit
PCON
OVP&OCP
Battery
OVP&OCP
2.3.2.2 Functions
After the AC input reaches the power board, it flows through the EMI filter circuit and
rectifier and filter circuit. Then it is converted to a DC voltage, which is further converted to
the 16.8V DC voltage by the Flyback converter. The 16.8V DC voltage is the main input of
DC/AC converter and charging circuit; it is used to charge the lithium battery or lead-acid
battery, and also converted to 12V, 5V and 3.3V DC voltage by corresponding circuit
conversion. In case the AC input is unavailable, the battery can supply power for the DC/DC
converters to get 12V, 5V and 3.3V DC voltages, which are under the control of device
poweron/poweroff signal.
The 16.8V DC output is protected against over-voltage and over-power, the 12V and 3.3V
DC outputs are protected against over-voltage, short-circuit and over –current, the 5V DC
output is protected against over-voltage and short-circuit.
Two power boards are developed for the lead-acid battery and lithium battery. Each board
demonstrates the battery types it supports via the main board connector, facilitating the main
unit to process information such as battery capacities. The power board charges the battery
merely under AC input. The monitor runs on AC mains if both AC mains and battery are
available.
12V
output
5V
output
3.3V
output
2-5
2.3.3 Key&displays Board
The key&displays board provides the user’s interface. The LCD module, 7-segment digital
display, LED indication lamp and keys are integrated on the board.
2.3.3.1 Principle Diagram
LCD signal
ADV
3.3V
VSB
FSTN LCD
module
Key
matrix
3.3V
disable
Switch
LED
CPLD
Start-up
circuit
2.3.3.2 Functions
The LCD module has the function of adjusting the contrast and brightness in 10 levels,
displaying menus, trend data and Pleth waveform.
The 7-segment digit displays are used to display systolic pressure, diastolic pressure, mean
pressure/cuff pressure, SpO
The AC indicator is driven by the ADV output from the power board whilst the working
status indicator (built in the Power On/Off key) is driven by 3.3V voltage. The battery
indicator is jointly controlled by the flash control signal, ADV signal and /BC signal.
The keypad consists of the power ON/OFF key and the other 11 functional keys.
, PR, Temp and so forth.
2
LED&KEY
detection
2-6
2.3.4 Parameter Boards
2.3.4.1 SpO2 Module
The principle diagram of SpO2 module is shown below:
/RST
WATCHDOG
WDI
DRIVE DAC
LED DRIVE
CIRCUITRY
CPU
DRAM
FLASH
Isolated Serial
In/Output Port
4KV Isolated
Power
Supply
+3.3V
+5V
-5V
HOST
+12V
SENSOR
GAIN CONTROL
CIRCUITRY
PROGRAMMABLE GAIN
CIRCUITRY
OFFSET DAC
OFFSET
AMPLIFIER
A/D
CONVERTER
The SpO2 sensor collects the red and infrared light signal transmitting through the finger or
toe which is pulsing and process the collected signal to get the measured result. The drive
circuit of the LED and the gain of the amplifying circuit should be controlled according to the
perfusions and transmittances of the tested objects.
2-7
2.3.4.2 NIBP Module
The principle diagram of NIBP module is shown below:
CUFF
PRESSURE
SENSOR
FOR
PROTECT
PRESSURE
SIGNAL
AMPLIFIED
CIRCUITS
FOR
PROTECT
OVER
PRESSURE
PROTECT
CIRCUIT
WATCHDO
G
ASYNCHRONOUS
SERIAL
COMMUNICATION
CPU
PRESSURE
SIGNAL
AMPLIFIED
CIRCUITS
MOTOR CONTROL
FEEDBACK SIGNAL
Windpipe
Valve and Air
Pump
PRESSURE
SENSOR
The NIBP is measured based on the pulse vibration principle. Inflate the cuff which is on the
forearm till the cuff pressure blocks the arterial blood, and then deflate the cuff according to a
specified algorithm. While the cuff pressure is decreasing, the arterial blood has pulses,
which are sensed by the pressure transducer in the cuff. Consequently, the pressure transducer
connected with the windpipe of the cuff, generates a pulsation signal, which is then processed
by the NIBP module to get the NIBP value.
NIBP values are based on the oscillometric method of noninvasive blood pressure
measurement and correspond to comparisons with auscultative values (applied to adults and
pediatrics elder than 3 years) and intra-arterial values (applied to neonates and pediatrics
younger than 3 years) within ANSI/AAMI SP10 Standards for accuracy (a mean difference of
± 5 mmHg, and a standard deviation of < 8 mmHg).
PRESSURE
SIGNAL
PUMP AND
VALVES
CONTROLED
CIRCUITS
A/D
CONVERTER
FLASH
DRAM
2-8
2.3.4.3 Temp Module
The principle diagram of Temp module is shown below:
Normally, the sensor used for measuring temperature is a thermistor. The resistance of a
given thermistor is nonlinearly relative to the temperature. Thus, the resistance of a
thermistor can be conversed into temperature. By applying given field current to the
thermistor, its resistance can be easily obtained by measuring the voltage on the thermistor.
2.3.5 Recorder
The recorder receives data from the main board and then sends them to the thermal printhead
for printing. The recorder has a hardkey(starting/stopping recordings) and a green LED on its
front.
2.3.6 Bar Code Scanner
The bar code scanner enables to read the one-dimensional and two-dimensional bar codes,
simplifying patient admit. The bar code scanner communicates with the monitor and gets
power supply to the power source via the serial ports. The scanner’s serial port is defined as
follows:
PIN Definition
2 Barcode_RX
3 Barcode_TX
5 GND
9
VCC(5VDC)
2-9
The monitor’s serial port is defined as follows:
PIN Definition
2 DPM 3_TX
3 DPM 3_RX
5 GND
9
VCC(5VDC)
Basic settings of the bar code scanner are listed in the table below:
Bar code scanner Factory default
Host Parameters
Baud Rate 9600 9600
Data Bits 8 8
Stop Bits 1 1
Calibration bit 0 0
Handshaking None None
User Parameters
Beeper Tone Medium Medium
Beeper Volume Medium High
Trigger Mode Level Auto Aim
Parameter Scanning Disable Enable
Data Format
Prefix Value 7013 <CR><LF> 7013 <CR><LF>
Suffix 1 Value
7013 <CR><LF> 7013 <CR><LF>
Suffix 2 Value
Scan Data Transmission
Format
<PREFIX><DATA><SUFFIX
1><SUFFIX 2>
Data only
You shall program the bar code scanner to perform various functions.
To change parameter settings, scan the following bar codes in sequence.
1. Set Default Parameter
2-10
2. Beeper Volume
3. Trigger Mode
4. Scan Data Transmission Format
5. Disable Parameter Scanning
2-11
FOR YOUR NOTES
2-12
3 Testing and Maintenance
3.1 Introduction
To ensure the monitor always functions normally, qualified service personnel should perform
regular inspection, maintenance and test. This chapter provides a checklist of the testing
procedures for the monitor with recommended test equipment and frequency. The service
personnel should perform the testing and maintenance procedures as required and use
appropriate test equipment.
The testing procedures provided in this chapter are intended to verify that the monitor meets
the performance specifications. If the monitor or a module fails to perform as specified in any
test, repairs or replacement must be done to correct the problem. If the problem persists,
contact our Customer Service Department.
CAUTION
z All tests should be performed by qualified service personnel only.
z Care should be taken to change the settings in the [MAINTAIN] menu to avoid loss
of data.
z Service personnel should acquaint themselves with the test tools and make sure
that test tools and cables are applicable.
3-1
3.1.1 Recommended Frequency
Check/Maintenance Item Frequency
Visual test When first installed or after reinstalled.
Power on test 1. When first installed or after reinstalled.
2. Following any maintenance or the replacement of
any main unit parts.
NIBP tests
SpO2 test /
Temp test /
Analog output test /
Bar code scanner test /
Electrical safety tests
Accuracy test
Leakage test
Calibration
Performance test IBP tests
Pressure
calibration
Enclosure leakage
current test
Earth leakage
current test
Patient leakage
current test
Patient auxiliary
current test
1. If the user suspects that the measurement is
incorrect.
2. Following any repairs or replacement of respective
module.
3. At least once every two years.
If the user suspects that analog output or bar code
scanner is abnormal.
1. Following any repair or replacement of the power
module.
2. At least once every two years.
Recorder check / Following any repair or replacement of the recorder.
3.2 Visual test
Inspect the equipment for obvious signs of damage. The test is passed if the equipment has no
obvious signs of damage. Follow these guidelines when inspecting the equipment:
Carefully inspect the case, the display screen and the buttons for physical damage.
Inspect all external connections for loose connectors, bent pins or frayed cables.
Inspect all connectors on the equipment for loose connectors or bent pins.
Make sure that the labels on the equipment are clearly legible.
3-2
3.3 Power-On Test
This test is to verify that the monitor can power up correctly. The test is passed if the monitor
starts up by following this procedure:
1. Insert the lead-acid batteries or lithium battery in the battery compartment and connect
the monitor to the AC mains; the AC mains LED and battery LED light.
2. Press the Power On/Off button to turn on the monitor. The operating status LED which
is built in the Power On/Off button lights up.
3. The system gives a beep indicating the self test related to alarm sounds is passed and all
the LEDs on the front panel light up. At the same time, the technical alarm lamp turns
yellow, and then turns off, indicating that the self test related to alarm lamps is passed.
4. The start-up screen disappears; the monitor enters the main screen and start-up is
finished.
3.3.1 NIBP Tests
NIBP Accuracy test
Tools required:
T-shape connector
Appropriating tubing
Balloon pump
Metal Vessel with volume 500 ± 25 ml
Reference manometer with accuracy 1 mmHg
Follow this procedure to perform the test:
1. Connect the equipment as shown above.
Monitor
NIBP cuff connector
Manometer
Tubing
Balloon pump
Metal vessel
3-3
r
2. Before inflating the metal vessel, the reading of the manometer should be 0. If not,
disconnect the airway and reconnect it until the readings is 0.
3. Press the MENU key; select [MAINTAIN >>]→[NIBP CALIBRATE] to start NIBP
calibration. Compare the manometer values with the displayed values. The difference
should be no greater than ±3mmHg (±0.4kPa).
4. Raise the pressure in the metal vessel to 50 mmHg with the balloon pump. Repeat step3.
5. Raise the pressure in the metal vessel to 200 mmHg with the balloon pump. Repeat
step 3.
Contact our service personnel if the difference between any manometer value and the
displayed value is greater than ±3 mmHg.
NOTE
z You can use an NIBP simulator to replace the balloon pump and the reference
1. Set the temperature of the oil tank to 37℃ and conduct the test after the temperature
stabilizes.
2
2. Set the [TEMP TYPE] to [MONITOR]. Remove the Temp probe from the probe
sheath and then put it into the oil tank.
3. Wait till the Temp value displayed on the monitor stabilizes. Verify that the displayed
value is 37±0.2 .℃
Please contact our service personnel if the Temp test fails.
3-6
3.4 Nurse Call Performance Test
Tools required: Multimeter
1. Connect the nurse call cable to the analog output connector.
2. Trigger a psychological alarm or a technical alarm.
3. Select [NURSE CALL>>] in the [MAINTAIN] menu. In the [NURSE CALL] menu,
select [ALM LEV] and [ALM TYPE]; set [CONTACT TYPE] to [NORMAL OPEN].
4. In the [NURSE CALL >>] menu, set [SIGNAL TYPE] to [PULSE]. Trigger an alarm
and measure the contact output with the multimeter. The output should be square waves
with an interval of 1s,
5. In the [NURSE CALL >>] menu, set [SIGNAL TYPE] to [CONTINUUM]. Trigger
an alarm and measure the contact output with the multimeter. The output should be
continuous high level.
Please contact our service personnel if the nurse call test fails.
3.5 Bar Code Scanner Test
Tools required: None
1. Aim the bar code scanner at the target bar code. Adjust the field of view to capture the
bar code.
2. Hold the trigger until the bar code scanner gives a beep, indicating the bar code is
successfully decoded. Meanwhile, the indication lamp turns to green and scanned
characters are displayed on the monitor.
Please contact our service personnel if the bar code scanner fails to work normally.
3-7
3.6 Electrical Safety Tests
WARNING
z Electrical safety tests are a proven means of verifying the electrical safety of the
monitor. They are intended for determining potential electrical hazards. Failure to
find out these hazar ds timely may cause p e r so n nel injury.
z Commercialy available test equipment such as safety analyzer can be used for
electrical safety tests. Be sure that the test equipment can be safely and reliably
used with the monitor before use. The service personnel should acquaint
themselves with the use of the test eqipment.
z Electrical safety tests should meet the requiremnets of the latest editions of EN
60601-1 and UL60601.
z These electrical safety tests do not supercede local requiremnets.
z All devices using the AC mains and connected to medical equipment within patient
environments must meet the requiremnets of the IEC 60601-1 medical electrical
systems standard and should be put under electrical safety tests at the frequency
recommended fo r the monitor.
Electrical safety tests are intended to timely check the potential electrical hazards to the
patient, operator or service personnel arising from the equipment. Electrical safety test should
be performed under normal ambient conditions of temperature, humidity and atmospheric
pressure.
The electrical safety test plan described hereunder takes 601 safety analyzer as an example.
Different safety analyzers may be used in different areas. Be sure to choose applicable test
plan.
3-8
Connection of the equipments is shown below:
Tools required:
Safety analyzer
Isolation transformer
3.6.1 Enclosure Leakage Current Test
1. Connect the 601 safety analyzer to an AC power supply (264V, 60 Hz).
2. Connect SUM terminal of the applied part connection apparatus to RA input terminal of
601 safety analyzer, another terminal to the applied part of EUT.
3. Connect the EUT to the 601 analyzer’s auxiliary output connector by using a power
cord.
4. Attach on end of the red lead to the red input terminal of the analyzer, and the other end
to tinsel over the enclosure of the EUT.
5. Power on the 601 safety analyzer and then press the “5-Enclosure leakage” button on the
analyzer’s panel to enter the enclosure leakage test screen.
6. Under normal condition, the enclosure leakage current should be no greater than 100µA.
Under single fault condition, it should be no greater than 300µA.
3-9
3.6.2 Earth Leakage Current Test
1. Connect the 601 safety analyzer to an AC power supply (264V, 60 Hz).
2. Connect the SUM terminal of the applied part connection apparatus to RA input
terminal of 601 safety analyzer, another terminal to the applied part of EUT.
3. Connect the EUT to the 601 analyzer’s auxiliary output connector by using a power
cord.
4. Power on the 601 safety analyzer and then press the “4-Earth leakage” button on the
analyzer’s panel to enter the earth leakage test screen.
5. Under normal condition, the earth leakage current should be no greater than 300µA.
Under single fault condition, it should be no greater than 1000 µA.
3.6.3 Patient Leakage Current Test
1. Connect the 60 safety analyzer to an AC source (264V, 60Hz).
2. Connect the SUM terminal of the applied part connection apparatus to RA input
terminal of 601 safety analyzer, another terminal to the applied part of EUT.
3. Connect the EUT to the 601 analyzer’s auxiliary output connector by using a power
cord.
4. Power on the 601 safety analyzer and then press the “6-Patient leakage” on the 601
analyzer’s panel.
5. Repeatedly press the “APPLIED PART” button to measure AC and DC leakage
alternatively. DC leakage reading is followed by “DC”.
6. Under normal status, the patient leakage current should be no greater than 10 µA. Under
single fault condition, it should be no greater than 50µA.
3.6.4 Patient Auxiliary Leakage Current Test
1. Connect the 601 safety analyzer to an AC source (264V, 60Hz).
2. Connect the equipment under test (EUT) to the analyzer’s auxiliary output connector by
using a power cord.
3. Connect the sensors of the applied part to the applied part connection apparatus, whose
RA-P terminal is connected to 601 safety analyzer’s RA terminal and SUM terminal to
601 safety analyzer’s LA terminal. RA terminal is switched on.
3-10
4. Power on the 601 safety analyzer and then press the “8-Patient Auxiliary Current Test”
button on the analyzer’s panel to enter the patient auxiliary current test screen.
5. Repeatedly press the “APPLIED PART” button to measure AC and DC leakage
alternatively. DC leakage reading is followed by “DC”.
6. Under normal status, the patient auxiliary leakage current should be no greater than 10
µA. Under single fault condition, it should be no greater than 50µA.
Please contact our service personnel if the electrical safety test fails.
3.7 Recorder Check
1. Print SpO
clear.
2. Set the recorder to some problems such as out of paper, paper jam and etc, the monitor
should give corresponding prompt messages. After the problem is removed, the recorder
should be able to work correctly.
3. Set the recorder to print trend data. Check that the recorder can give printouts
accordingly.
Please contact our service personnel if the recorder test fails.
Pleth waveforms. The recorder should print correctly and printout should be
2
3.8 Program upgrade
You can upgrade the monitor by downloading the upgrade software through network. At the
same tine, you can view the upgrade status log. The upgrade software can directly run on a
portable PC or desktop PC. Through the network or by connecting the monitor to a PC via a
network cable, you can upgrade the following programs:
Bootstrap program
System program
Bar code recognition configuration
Multiligual library
General configurations (including passwords, company logo)
System functional configuration
FPGA program
Parameter module programs: SpO2 module (Mindray DS), NIBP module and Temp
module.
Please refer to help and instructions for program upgrade for details.
3-11
CAUTION
z Disconnect the monitor from the patient and make sure the important date are
saved before upgrade.
z Do not shut down or power off the equipment when upgrading the bootstrap
program. Otherwsie, it may cause the equipemnt to break down.
z Programs upgrade should be performed by qualified service personnel only.
NOTE
z After upgrading the boot program, re-upgrade the system program and other
programs to ensure compatibility.
z Make sure the version of the upgrade package is your desired one. If yo u want to
obtain the latest upgrade package, contact our Customer Service Department.
3-12
4 Troubleshooting
4.1 Introduction
In this chapter, monitor problems are listed along with possible causes and recommended
corrective actions. Refer to the tables to check the monitor, identify and eliminate the
troubles.
The troubles we list here are frequently arisen difficulties and the actions were recommended
can correct most problems, but not all of them. For more information on troubleshooting,
please contact our Customer Service Department.
4.2 Part Replacement
Printed circuit boards (PCBs), major parts and components in the monitor are replaceable.
Once you isolate a PCB you suspect defective, follow the instruction in 5 Repair and Disassembly to replace the PCB with a known good one and check that the trouble disappear
or the 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.
To obtain information on replacement parts or order them, please refer to 6 Parts.
4.3 Monitor Status Check
Some troubleshooting tasks may require you to identify the hardware version and status of
your monitor.
1. To view system software version and FPGA version, select [MENU] →
[MAINTAIN>>] → [VERSION].
2. To view the monitor’s total runtime, select [MENU] → [MAINTAIN>>] →
[VERSION]→[TOTAL RUN TIME>>].
Battery damaged Replace battery and recharge the replacement
battery. If the replacement battery can be
recharged, the original one fails.
Cable defective or
poorly connected
Power board failure Replace the power board
1. Power supply
protection
2. Power board failure
1. Check whether the cable between battery
interface board and the power module is
properly connected
2. Check whether the connecting cables and
connectors are damaged
1. Turn off the monitor then restart it.
2. If the problem remains, disconnect the AC
mains for 5 s and reconnect it, then restart the
monitor.
3. If the problem still remains, replace power
board.
NOTE
z When the power module has a failure, it may cause problems to other components,
e.g. the monitor suddenly shuts downs during the start-up, as the power module
may have a power supply protection. In this case, troubleshoot the power module
as per the procedure described in the table above.
z Parameter module, recorder and bar code scanner are powered by the power
module. In the event that a componet malfunctions, check if the operating voltage
is correct. Refer to 2 Theory of Operation for the operating voltage and
measurement point of each component.
4-6
4.5.9 Network related problems
Symptoms Possible Cause Corrective Actions
The monitor cannot be
connected to the CMS.
Frequent dropouts and
network
disconnections
No connection to LAN 1. Confirm whether the cables and
connectors are in good condition and whether
the network is correctly connected.
2. Check whether the hub or switch facilities
is correctly configured
Improper LAN cable
connection
Incorrect IP address
configuration
Check LAN cable connection. LAN cable
shall not be longer than 50 m.
Check for IP address conflict. Reconfigure IP
address.
4.5.10 Software Upgrade Problems
Symptoms Possible Cause Corrective Actions
Bootstrap upgrade
fails
Program upgrade fails
Power failure or
unintended power off
during bootstrap upgrade
Incorrect network
connection
Wrong upgrade package
has been downloaded
Incorrect IP address
configuration
Return the main board to the factory for
repair
1. Check that network connector on the
monitor is used.
2. Make sure that the hub or the switcher runs
normally. Check whether net cables are of
the right type and have been connected
correctly.
Upgrade package shall be .mup files. Select
desired package according to the program
you want to upgrade.
Configure a fixed IP address in range C as
specified for the monitor. We recommend not
to upgrade a program when the monitor is
connected to a network with multiples PCs.
4-7
4.5.11 Bar Code Scanner Failures
Symptoms Possible Cause Corrective Actions
Bar code scanner does
not work
Bar code scanner
cannot decode the
target bar codes
Scanned characters
incorrectly displayed
on the monitor
Bar code scanner not
powered on
Incorrect interface cables
used
Loose Interface cables Make sure that interface cables are fixed
Bar code scanner not
programmed based on
bar code categories
Unreadable bar code Make sure the bar code is flawless and check
Scanner and bar code at
improper distance and
angle
The monitor’s bar code
recognition
configuration does not
meet the format of the
target bar code.
Scanner serial port
output incorrectly set
Select [MAINTAIN >>] → [USER MAINTAIN >>] → enter required user
password; set [BARCODE POWER] to
[ON] in the pop-up menu to switch on the
bar code scanner.
Replace interface cables
Make sure to program the bar code scanner
so that it can decode the bar codes of
specified types.
if bar codes of the same type can be decoded.
Aim the scanner at the bar code and adjust
the distance between the scanner and the bar
code.
Download correct bar code recognition
configuration for the monitor.
Configure the scanner’s serial port output
according to the host serial port settings.
4.5.12 NIBP Measurement Failures
Symptoms Possible Cause Corrective Actions
Unable to start NIBP
measurement
inflation/deflation
failure
Cables detective Check whether cables between NIBP module
and the main board are in good condition.
Main board failure Replace the main board.
Pump or valve damaged Replace NIBP module. Cuff
Air tubing occluded Replace the air tubing.
4-8
4.5.13 SpO2 Measurement Failure
Symptoms Possible Cause Corrective Actions
Unable to measure
SpO2
SpO2 sensor failure Replace the SpO2 sensor.
Cables defective Check whether the cable between SpO2
module and the main board is in good
condition.
SpO2 module failure Replace SpO2 module.
Main board failure Replace the main board.
4.5.14 Temp Measurement Failures
Symptoms Possible Cause Corrective Actions
Unable to measure
patient temperature.
Temp probe damaged Replace the Temp probe.
Cables detective Check whether the cable between Temp
module and the main board is in good
condition.
Main board failure Replace the main board
4-9
FOR YOUR NOTES
4-10
5 Repair and Disassembly
5.1 Tools
During disassembly and replacement, the following tools may be required:
Before disassembling the monitor, stop monitoring the patients, turn off the monitor and
disconnect all the accessories and peripheral devices.
Caution
z Before disassembling the monitor, be sure to eliminate the static charges first.
When disassembling the parts labeled with static-sensitive symbols, make sure you
are wearing electrostatic discharge protection such as antistatic wristband or
gloves to avoid damaging the equipment.
z Properly connect the cables or wires when reassembling the monitor to avoid short
circuit.
z When assembling the monitor, be sure to select proper screws. If an unfit screw is
tightened by force, the monitor may be damaged and the screw or the part may fall
off during use to cause unpredictable damage or human injury.
z Be sure to follow the correct sequence to disassemle the monitor. Otherwise, the
monitor may be damaged permanently.
z Be sure to disconnect all the cables before disassembling any parts. Be sure not to
damage any cables or connectors.
z Place the screws and parts removed from the monitor properly, avoiding avoid
falling off, tarnishing or losing the parts.
5-1
5.3 Disassembly
5.3.1 Separating the Front and Rear Half of the Monitor
1. If the monitor is configured with Temp module,
Unscrew the two M3×6 crosshead screws with a screwdriver as shown in the figure
below.
Disconnect the wires from the PCBA as shown in the figure below.
Unscrew the four M3×20 crosshead screws with a screwdriver(102) as shown in
the figure below.
5-2
2. If the device is not equipped with a Temp module,
Unscrew the four M3×20 crosshead screws directly with a screwdriver(102) as
shown in the figure below.
NOTE
z When separating the front and the rear part, use screwdriver(102) instead of
screwdriver (107) to unscrew the four M3×20 crosshead screws.
3. Release the clips on the front and rear housings; cut the cable tie of the LCD signal wire
with a wire cutter; disconnect the cables and air tubing connecting the front and the rear
housings; and then separate the front and the rear housings.
Clip
5-3
NOTE
z Exercise care when separating the front and the rear housings. Be sure not to
damage the cables and connectors.
5.3.2 Disassembling the Front Housing Assembly
1. Unscrew the six M3×6 crosshead screws with a screwdriver and remove the button
board.
2. Unscrew the four M3×8 crosshead screws with a screwdriver; disconnect the flexible
cables on the button board; and then remove the LCD.
5-4
3. Unscrew the three M3×6 crosshead screws with a screwdriver and take out the SpO
rack.
4. Unscrew the M3×6 screw with a screwdriver and take out the SpO
module.
2
Mindray DS SpO2
module
Masimo SpO
moduleNellcor SpO2 module
2
2
5. Unscrew the plastic nut and take out the SpO
signal cable.
2
5-5
5.3.3 Removing the Main Rack Assembly
1. Unscrew the two M3×6 crosshead screws with a screwdriver and take out the recorder
by unclenching the clips.
2. Remove the cables from the recorder and unscrew the M3×6 crosshead screw with a
screw driver.
3. Unscrew the five M3×6 crosshead screws with a screwdriver and take out the main rack
assembly.
5-6
4. Provided that the device is configured with a Temp module, unscrew the three PT3×8
tapping screws with a screwdriver and then remove the Temp module.
5.3.4 Disassembling NIBP Module
1. Cut the cable tie with a wire cutter
2. Unscrew the three M3×6 crosshead screws with a screwdriver and take out the NIBP
rack.
5-7
3. Unscrew the four M3×6 crosshead screws with a screwdriver and take out the NIBP
module.
5.3.5 Removing the Main Board
Disconnect all the cables connecting the main board and then take out the main board by
unscrewing the four M3×6 crosshead screws with a screwdriver.
5.3.6 Removing the Power Board
Pull out the cables that connect the power board and remove the power board by unscrewing
the three M3×6 crosshead screws with a screwdriver.
5-8
5.3.7 Removing the Battery Assembly
1. If the monitor is equipped with the lead-acid battery assembly, unscrew the four M3×8
crosshead screws with a screwdriver.
2. If the monitor is equipped with the lithium battery assembly, unscrew the three M3×6
crosshead screws with a screwdriver.
5.3.8 Removing the Fan and Speaker
Cut the cable ties on the fan, speaker and the main rack; remove the fan cushion; unscrew the
three M3×15 crosshead screws with a screwdriver and remove the fan. The speaker can be
removed from the main rack directly.
5-9
5.3.9 Removing the Power Socket
1. Remove the nut securing the grounding post with a spanner and take out the grounding
terminal of the power socket.
2. Unscrew the two M3×8 crosshead screws with a screwdriver and remove the power
socket.
5.3.10 Removing the Temp Module
1. Remove the Temp probe assembly first.
5-10
2. Unscrew the two M3×6 cross head screws with a screwdriver and take out the cover
plate.
3. Unscrew the four M3×6 crosshead screws with a screwdriver and remove the Temp
module main board.
5-11
5.3.11 Removing the SpO2 Module
1. Mindray DS SpO
2. For Masimo SpO
module needs not be removed.
2
module, remove the isolation power board by unscrewing the three
2
M3 nuts with sharp nose pliers; unscrew the three M3×6 crosshead screws with a
screwdriver; and then remove the SpO
board.
2
3. For Nellcor SpO
remove the isolation power board and the SpO
module, unscrew the M3×18 crosshead screw with a screwdriver; then