Mindray VS-900 User manual

VS-900
Vital Signs Monitor
Service Manual

I
Intellectual Property Statement
SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD. (hereinafter called Mindray)
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 Mindray, nor the rights of others. Mindray
does not assume any liability arising out of any infringements of patents or other rights of
third parties.
, , and are the registered trademarks or trademarks
owned by Mindray in China and other countries.
Revision History
This manual has a revision number. This revision number changes whenever the manual is
updated due to software or technical specification change. Contents of this manual are
subject to change without prior notice. The version information of this manual is as follows:
Version number: 6.0
Release time: April 2019
© Copyright 2014-2019Shenzhen Mindray Bio-Medical Electronics Co., Ltd. All
rights reserved.

II
Preface
Manual Purpose
This manual provides detailed information about the assembling, dissembling, 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.
This manual is based on the maximum configuration and therefore some contents may not
apply to your product. If you have any question, please contact our Customer Service
Department.
Observance of the manual is a prerequisite for proper equipment maintenance and prevents
equipment damage and personnel injury.
Intended Audience
This manual is for biomedical engineers, authorized technicians or service representatives
responsible for troubleshooting, repairing and maintaining the equipment.
Passwords
A password may be required to access different modes of the following equipments. The
passwords are listed below:
User settings: 888888 (User adjustable)
Factory maintenance: 332888
Demo mode: 2088
Configuration mode: 315666 (User adjustable)

1
Contents
1 Introduction ................................................................................................................... 1-1
1.1 Information of This Manual......................................................................................................................1-1
1.2 Safety Information.......................................................................................................................................1-1
1.2.1 Dangers..............................................................................................................................................1-2
1.2.2 Warnings............................................................................................................................................1-2
1.2.3 Cautions.............................................................................................................................................1-2
1.2.4 Notes...................................................................................................................................................1-2
1.3 Equipment Symbols ...................................................................................................................................1-3
2 Theory of Operation .............................................................................................................. 2-1
2.1 Overview.........................................................................................................................................................2-1
2.2 Connectors for Peripheral Devices........................................................................................................2-2
2.3 Main Unit ........................................................................................................................................................2-2
2.4 Front Housing Assembly........................................................................................................................... 2-4
2.5 Main Board .....................................................................................................................................................2-4
2.6 Rear Housing Assembly ............................................................................................................................2-5
2.7 External Module...........................................................................................................................................2-7
3 Equipment Installation ......................................................................................................... 3-1
3.1 Unpacking the Equipment.......................................................................................................................3-1
3.2 Preparation for Installation ......................................................................................................................3-1
3.2.1 Preparation for Installation Site ................................................................................................ 3-1
3.2.2 Environmental Requirements....................................................................................................3-1
3.2.3 Electrical Requirements ...............................................................................................................3-2
3.3 Equipment Installation..............................................................................................................................3-2
3.3.1 Preparation for Power on ............................................................................................................3-3
4 Testing and Maintenance...................................................................................................... 4-1
4.1 Introduction...................................................................................................................................................4-1
4.1.1 Test Equipment ............................................................................................................................... 4-1
4.1.2 Test Report ........................................................................................................................................4-1
4.1.3 Preventative Maintenance..........................................................................................................4-1
4.1.4 Recommended Frequency .........................................................................................................4-2
4.2 Visual Inspection..........................................................................................................................................4-2
4.3 Power-on Test................................................................................................................................................4-3
4.4 Module Performance Tests.......................................................................................................................4-3
4.4.1 SpO2test ............................................................................................................................................4-3
4.4.2 NIBP Test ............................................................................................................................................4-5
4.4.3 CO2Test ..............................................................................................................................................4-7
4.4.4 Infrared Ear Thermometer/Exergen TemporalScanner Thermometer Test ..............4-8
4.4.5 SmarTempTM Module Test............................................................................................................4-9

2
4.4.6 Nurse Call Reply Performance Test ........................................................................................4-10
4.4.7 Bar Code Scanner Test ................................................................................................................4-10
4.5 Electric Safety Tests...................................................................................................................................4-11
4.6 Touchscreen Calibration .........................................................................................................................4-11
4.7 Recorder check ...........................................................................................................................................4-11
4.8 Battery Check..............................................................................................................................................4-11
4.9 Factory Maintenance ...............................................................................................................................4-12
4.9.1 Accessing Factory Maintenance Menu ................................................................................4-12
4.9.2 Drawing Waves..............................................................................................................................4-12
4.9.3 Software Version...........................................................................................................................4-13
4.9.4 Monitor Information ...................................................................................................................4-14
5 Troubleshooting .................................................................................................................... 5-1
5.1 Overview......................................................................................................................................................... 5-1
5.2 Part Replacement ........................................................................................................................................ 5-1
5.3 Checking Equipment Status.................................................................................................................... 5-1
5.4 Checking Software Version...................................................................................................................... 5-1
5.5 Checking Technical Alarms...................................................................................................................... 5-2
5.6 Troubleshooting Guide ............................................................................................................................. 5-2
5.6.1 Power On/Off Failure..................................................................................................................... 5-2
5.6.2 Display Failures ............................................................................................................................... 5-2
5.6.3 Alarm Lamp Failures...................................................................................................................... 5-3
5.6.4 Button and Knob Failures............................................................................................................ 5-3
5.6.5 Sound Failures ................................................................................................................................. 5-4
5.6.6 Battery Failures................................................................................................................................ 5-4
5.6.7 Recorder Failures............................................................................................................................ 5-5
5.6.8 Output Interface Failure .............................................................................................................. 5-5
5.6.9 Data Storage Failure...................................................................................................................... 5-6
5.6.10 Wired Network Related Problems .........................................................................................5-6
5.6.11 Wi-Fi Related Problems.............................................................................................................. 5-7
5.6.12 Module defective......................................................................................................................... 5-7
5.6.13 THJ79JU Infrared Ear Thermometer Module Problems................................................. 5-8
5.6.14 GeniusTM 2 Infrared Ear Thermometer Module Problems............................................. 5-8
Exergen TemporalScanner Thermometer Module Problems ................................................5-9
5.6.15 ............................................................................................................................................................. 5-9
5.6.16 CO2Module Problems..............................................................................................................5-10
5.6.17 Software Upgrade Problems .................................................................................................5-10
5.6.18 Technical Alarm Messages......................................................................................................5-11
6 Disassembly and Repair........................................................................................................ 6-1
6.1 Tools Required .............................................................................................................................................. 6-1
6.2 Preparations for Disassembly ................................................................................................................. 6-1
6.3 Disassembling the Main Unit.................................................................................................................. 6-2
6.3.1 Disassembling the SmarTempTM Module (Optional)......................................................... 6-2

3
6.3.2 Disassembling the Infrared Ear Thermometer Module (Optional)..............................6-2
6.3.3 Removing the Recorder...............................................................................................................6-3
6.3.4 Separating the Front and Rear Half of the Monitor...........................................................6-3
6.3.5 Removing the Parameter Connector Panel Assembly ..................................................... 6-5
6.3.6 Disassembling the Main Bracket Assembly..........................................................................6-6
6.3.7 Removing the Parameter Board (SpO2Optional) and Power Management Board6-8
6.3.8 Removing the Parameter Connector Panel Assembly (With CO2)...............................6-9
6.3.9 Disassembling the CO2Module Assembly..........................................................................6-10
6.3.10 Disassembling Pumps and Valves (NIBP optional)........................................................6-10
6.3.11 Disassembling CO2 main Module .......................................................................................6-11
6.3.12 Disassembling the Main Bracket Assembly（With CO2）.........................................6-12
6.3.13 Disassembling Pumps and Valves (NIBP optional)........................................................6-13
6.3.14 Disassembling AC/DC Power Board and Battery Converter Board.........................6-13
6.4 Disassembling the Front Housing Assembly ..................................................................................6-14
6.4.1 Removing the Touchscreen Control Board (Optional)...................................................6-14
6.4.2 Removing the Wi-Fi Module (Optional)...............................................................................6-15
6.4.3 Removing the Main Control Board........................................................................................6-17
6.4.4 Removing SD Card (Optional) .................................................................................................6-18
6.4.5 Removing the Touchscreen (Optional) ................................................................................6-18
6.4.6 Disassembling the Display........................................................................................................6-19
6.4.7 Removing the Keypad ................................................................................................................6-19
6.4.8 Removing the Encoder...............................................................................................................6-19
6.4.9 Removing the Alarm Lamp.......................................................................................................6-20
6.5 Disassembling the SmarTempTM Module (Optional)....................................................................6-20
6.5.1 Removing the SmarTempTM Module PCBA and SmarTempTM Module Power Board
PCBA ............................................................................................................................................................6-20
6.5.2 Disassembling the Temp On-Position Detection Board PCBA....................................6-21
6.6 Disassembling the Infrared Ear Thermometer Module (Optional) .........................................6-22
6.6.1 Disassembling the Pop-up Unit..............................................................................................6-22
6.6.2 Disassembling the Separator Plate PCBA ...........................................................................6-23
6.6.3 Disassembling the Convidien Infrared Ear Thermometer Module or Exergen
TemporalScanner Themometer Module (Optional) ..................................................................6-24
7 Parts........................................................................................................................................ 7-1
7.1 Introduction...................................................................................................................................................7-1
7.2 Main Unit ........................................................................................................................................................7-1
7.2.1 Exploded View.................................................................................................................................7-1
7.2.2 Parts List.............................................................................................................................................7-2
7.3 Front Housing Subassembly (Touchscreen)......................................................................................7-2
7.3.1 Exploded View.................................................................................................................................7-2
7.3.2 Parts List.............................................................................................................................................7-3
7.4 Front Housing Subassembly (Non-Touchscreen) ............................................................................7-4
7.4.1 Exploded View.................................................................................................................................7-4
7.4.2 Parts List.............................................................................................................................................7-4

4
7.5 Rear Housing Assembly ............................................................................................................................ 7-6
7.5.1 Exploded View................................................................................................................................. 7-6
7.5.2 Parts List............................................................................................................................................. 7-6
7.6 Main Bracket Assembly ............................................................................................................................. 7-8
7.6.1 Exploded View................................................................................................................................. 7-8
7.6.2 Parts List............................................................................................................................................. 7-8
7.7 Power Management Board Assembly ................................................................................................. 7-9
7.7.1 Exploded View................................................................................................................................. 7-9
7.7.2 Parts List............................................................................................................................................. 7-9
7.8 Parameter Connector Panel Assembly..............................................................................................7-10
7.8.1 Exploded View...............................................................................................................................7-10
7.8.2 Parts List...........................................................................................................................................7-10
7.9 Predictive Temp Assembly .....................................................................................................................7-11
7.9.1 Exploded View...............................................................................................................................7-11
7.9.2 Parts List...........................................................................................................................................7-11
7.10 THJ79JU Infrared Ear Thermometer Assembly ............................................................................7-13
7.10.1 Exploded View ............................................................................................................................7-13
7.10.2 Parts List ........................................................................................................................................7-13
GeniusTM 2 Tympanic Thermometer or Exergen TemporalScanner Thermometer Assembly
.................................................................................................................................................................................7-15
7.11.........................................................................................................................................................................7-15
Exploded View.......................................................................................................................................7-15
7.11.1 ...........................................................................................................................................................7-15
Parts List...................................................................................................................................................7-15
7.11.2 ...........................................................................................................................................................7-15
7.12 Exergen frame Assembly......................................................................................................................7-16
7.12.1 Exploded View ............................................................................................................................7-16
7.12.2 Parts List ........................................................................................................................................7-17
8 Hardware and Software Upgrade ........................................................................................ 8-1
8.1 Hardware Upgrade...................................................................................................................................... 8-1
8.1.1 Upgrade Package ........................................................................................................................... 8-1
8.1.2 Upgrading Parameter Modules ................................................................................................ 8-2
8.1.3 Upgrading NIBP .............................................................................................................................. 8-3
8.1.4 Upgrading Temp............................................................................................................................. 8-3
8.1.5 Enabling Parameter Functions.................................................................................................. 8-3
8.1.6 Upgrading Wireless Network Function .................................................................................. 8-3
8.1.7 Upgrading Touchscreen .............................................................................................................. 8-4
8.1.8 Upgrading Recorder Function................................................................................................... 8-4
8.1.9 Upgrading Nurse Call Function and DIAP Protocol Port ................................................. 8-5
8.2 Software Upgrade ....................................................................................................................................... 8-5
8.2.1 Installing Mindray Patient Monitor Software Upgrade Tool .......................................... 8-6
8.2.2 Software Upgrade Procedure.................................................................................................... 8-8
8.2.3 Upgrading the Scoring................................................................................................................. 8-9

5
A Electrical Safety Inspection ..................................................................................................A-1
A.1 Power Cord Plug .........................................................................................................................................A-1
A.2 Device Enclosure and Accessories.......................................................................................................A-1
A.3 Device Labeling ..........................................................................................................................................A-2
A.4 Protective Earth Resistance ....................................................................................................................A-2
A.5 Earth Leakage Test .....................................................................................................................................A-3
A.6 Patient Leakage Current ..........................................................................................................................A-5
A.7 Mains on Applied Part Leakage ............................................................................................................A-6

6
FOR YOUR NOTES

1-1
1Introduction
1.1 Information of This Manual
Version Revision History
1.0 New
2.0 Change parts list according to new BOM
3.0 1. Add the related description of infrared ear thermometer module.
2. Add the description of MEWS software upgrade.
4.0 Add the description of CO2and Covidien thermometer.
5.0 1. Add Exergen TemporalScanner Themometer contents
2. Delete NIBP calibration contents
1.2 Safety Information
DANGER
Indicates an imminent hazard that, if not avoided, will result in death or serious
injury.
WARNING
Indicates a potential hazard or unsafe practice that, if not avoided, will result in
death or serious injury.
CAUTION
Indicates a potential hazard or unsafe practice that, if not avoided, could result in
minor personal injury or product/property damage.
NOTE
Provides application tips or other useful information to ensure that you get the
most from your product.

1-2
1.2.1 Dangers
There are no dangers that refer to the product in general. Specific“Danger” statements may
be given in the respective sections of this manual.
1.2.2 Warnings
WARNING
All installation operations, expansions, changes, modifications and repairs of this
product are conducted by Mindray authorized personnel.
There is high voltage inside the equipment. Never disassemble the equipment
before it is disconnected from the AC power source or the battery.
When you disassemble/reassemble a parameter module, a patient leakage current
test must be performed before it is used again for monitoring.
The equipment must be connected to a properly installed power outlet with
protective earth contacts only. If the installation does not provide for a protective
earth conductor, disconnect it from the power line and operate it on battery power,
if possible.
Disposal of the packaging material should observe the applicable waste control
regulations and keeping it out of children’s reach.
1.2.3 Cautions
CAUTION
Make sure that no electromagnetic radiation interferes with the performance of the
equipment when preparing to carry out performance tests. Mobile phone, X-ray
equipment or MRI devices are a possible source of interference as they may emit
higher levels of electromagnetic radiation.
Before connecting the receiver to the power line, check that the voltage and
frequency ratings of the power line are the same as those indicated on the unit’s
label or in this manual.
Protect the equipment from damage caused by drop, impact, strong vibration or
other mechanical force during servicing.
1.2.4 Notes
NOTE
Refer to Operator's Manual for detailed operation and other information.

1-3
1.3 Equipment Symbols
NOTE
Not all the symbols listed below are applied to your equipment.
General warning sign Power ON/OFF
Alternating current (AC) Battery indicator
AUDIO PAUSED
NIBP Start/Stop key
Alarm Paused
Record
Admit a new patient Insertion Direction
DEFIBRILLATION –PROOF
TYPE CF APPLIED PART Input/Output
Network connector
Equipotentiality
USB connectors
Manufacturer
Serial number
Electrostatic sensitive
devices.
DATE OF MANUAFACTURE
Protection against fluid
ingress
Gas outlet Gas sample inlet
Refer to instruction
manual/booklet
Interference may occur in the
vicinity of equipment marked
with this symbol
DEFIBRILLATION-PROOF TYPE BF APPLIED PART

1-4
The following definition of the WEEE label applies to EU member states only.
This symbol indicates that this product should not be treated as household
waste. By ensuring that this product is disposed of correctly, you will help
prevent bringing potential negative consequences to the environment and
human health. For more detailed information with regard to returning and
recycling this product, please consult the distributor from whom you purchased
it.
* For system products, this label may be attached to the main unit only.

2-1
2Theory of Operation
2.1 Overview
The Monitor is intended for monitoring physiologic parameters, including SpO2, PR, NIBP
and TEMP, on adult, pediatric, and neonatal patients in healthcare facilities by clinical
physicians or appropriate medical staff under the direction of physicians.
The equipment also:
Provides audible and visual alarm indications in case of patient or equipment problems;
Provides display, review, storage and printing of monitored information;
Incorporates multiple input devices such as buttons, knob, and touchscreen; and,
Enables program upgrade over the network.
Nurse Call
CMS/Gatewa
y
AP
LAN
Wi-Fi
EMR Server
Other device
Reserved port
Monito
r
The above figure shows a system consisting of the vital signs monitor and its peripheral
devices. The vital signs monitor:
Can be used for monitoring the physiological parameters, giving alarms and reviewing
patient data, etc.
Supports recorder.
Supports nurse call function.
Supports Wi-Fi module, wired network, remote view, and communication with the
Central Monitoring System (hereinafter called CMS).
Supports external AC power source and an internal battery.
Supports clinical data acquisition, which has two ways: by SD card and by USB drive.
The system software should support data output function, for SD card is a built-in
device.

2-2
2.2 Connectors for Peripheral Devices
1. Connector for Temp probe
2. Network connector: It is a standard RJ45 connector used to communicate with external
devices, such as central monitoring system, e-Gateway, or used to export data or
upgrade the system.
3. Multi-function connector: connects to the hospital's nurse call system, or connects
external devices through DIAP protocol.
4. USB connector: connects to barcode scanner or USB disk.
5. AC Power Input
6. Equipotential grounding terminal: When the equipment and other devices are to be
used together, their equipotential grounding terminals should be connected together
to eliminate the potential difference between them.
2.3 Main Unit
The main unit of the vital signs monitor consists of three parts:
Front housing assembly: main board, Wi-Fi module, keypad board assembly (knob),
display, touchscreen, and alarm lamp board.
Rear housing assembly: power module (AC/DC), power management and interface
board (including SpO2isolation power), recorder, speaker, battery, NIBP module, and
SpO2board (including three types of configuration, i.e. Mindray, Masimo, and Nellcor).
External module: SmarTempTM module or Infrared Ear Thermometer module. The two
modules are mutually exclusive.
1
2
3
4
5
6

2-3
The following figure shows the main unit architecture of the vital signs monitor.
NIBP socket
SpO2socket
15V
AC-DC power
module
AC-IN
Power
management
and interface
board
Power
On/Off
keypad
(Indicator)
2600mAh
battery
Speaker
Alarm lamp
board
LCD display
Pump
Main board
Wi-Fi module
External interface
Knob
Touchscree
n control
board
Touch
screen
Front Housing Assembly
Rear Housing Assembly
NIBP module
Predictive
Temp
module
SpO2 board
（Standard
Mindray, OEM
optional）
SpO2isolation power
External Module
SD card
I2C
LVD
S
Backlight
RJ45/USB/Multifunctional
(nurse call, extended ports)
Temp
probe
Recorder

2-4
2.4 Front Housing Assembly
2.5 Main Board
The main board is the control center of the equipment. It provides communication, display,
and data storage functions, including:
Communication with SpO2board, NIBP module, and Temp module through connector;
Communication with power management board, keypad board, and recorder through
connectors;
Providing drive for display and backlight;
Providing 2 USB connectors, a network connector, and a multifunctional connector;
Communication with touchscreen control board through I2C;
Providing drive for SD card; and,
Providing drive for Wi-Fi module.
Alarm
lamp
bd
Wi-Fi
antenna
Touchsc
reen
control
Main
Wi-Fi
module
Ke
y
pa
Screws securing the front and rear
hi

2-5
Keypad
The keypad scans and detects the input of keys and knobs, integrates the power on/off key,
and connects AC and battery indicators.
Alarm Lamp Board
The alarm lamp board is located at the top of front housing. It has two-color indicators, red
and yellow. The alarm lamp board directly connects the main board through a cable. It is
controlled directly by the main board.
Touchscreen and Touchscreen Control Board
The touchscreen control board drives the touchscreen and implements communication with
the vital signs monitor.
Wi-Fi Module
The Wi-Fi enable the equipment to connect to 802.11 g/n wireless network.
2.6 Rear Housing Assembly
Rear housing assembly consists of power module (AC/DC), power management and
interface board (including SpO2isolation power), recorder, speaker, battery, NIBP module,
and SpO2board (including three types of configuration, i.e. Mindray, Masimo, and Nellcor).
Power
management
and interface
board
SpO2
board
NIBP
module
Speaker
AC/DC
power
module
Recorder

2-6
AC/DC Power Module
The AC/DC power board transforms the input AC into DC power, which is the power source
for all voltages in the equipment.
Power Management and Interface Board
The power management and interface board mainly provides the following functions:
Charge and discharge of battery and charge detection;
DC/DC conversion: outputs 12V and 5V DC power;
Control over power on/off key and AC, BAT indicator;
Communication transmission among parameter modules;
Providing isolation power for Mindray/OEM SpO2module; and,
Providing external connectors, and also filter and protection for these connectors.
Recorder
The recorder receives data from the main board and sends them to the thermal printhead
for printing.
NIBP Module
The NIBP module consists of blood pressure measurement board and pump and valve
assembly, providing measurement acquisition of blood pressure data. The main functions of
the NIBP module are:
NIBP measurement; and,
Data exchange with the main board through the serial ports.
SpO2Board
The independently developed Mindray SpO2board provides SpO2measurement as good as
other boards but with smaller size and lower consumption. The power management and
interface board is also compatible with Nellcor NELL-1 SpO2board and Masimo MS-2013
SpO2board.
The SpO2board collects SpO2signals, processes SpO2algorithm and sends measurement
results to the main board. The power management interface board provides isolation power
for it.
CO2Module
TheCO
2monitoring is a continuous, non-invasive technique for determining the
concentration of CO2in the patient’ airway by measuring the absorption of infrared (IR) light
of specific wavelengths. The main functions of the CO2module are:
Provides a CO2waveform, and EtCO2, FiCO2, awRR measurement; and
Data exchange with the main board through the serial ports.