Mindray VS-800 User manual

VS-800
Vital signs monitor
Service Manual

I
Copyright
Statement
SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD. (hereinafter called Mindray)
owns all rights to this unpublished work and intends to maintain this work as confidential.
Mindray may also seek to maintain this work as an unpublished copyright. This publication is
to be used solely for the purposes of reference, operation, maintenance, or repair of Mindray
equipment. No part of this can be disseminated for other purposes.
In the event of inadvertent or deliberate publication, Mindray intends to enforce its rights to
this work under copyright laws as a published work. Those having access to this work may
not copy, use, or disclose the information in this work unless expressly authorized by Mindray
to do so.
All information contained in this publication is believed to be correct. Mindray shall not be
liable for errors contained herein nor for incidental or consequential damages in connection
with the furnishing, performance, or use of this material. This publication may refer to
information and 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.
Content of this manual is subject to changes without prior notice.
Content of this manual is maybe in defect of instructions ,If user has any problem ,Please
consult my company customerservice .
PROPERTY OF SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD.
ALL RIGHTS RESERVED
Responsibility on the manufacturer party
Mindray is responsible for safety, reliability and performance of this equipment only in the
condition that:
• all installation, expansion, change, modification and repair of this equipment are conducted
by Mindray qualified personnel;
• applied electrical appliance is in compliance with relevant National Standards;
• the monitor is operated under strict observance of this manual.

II
Warning
For continued safe use of this equipment, it is necessary that the listed instructions
are followed. However, instructions listed in this manual in no way supersede
established medical practices concerning patient care.
 Do not rely only on audible alarm system to monitor patient. When monitoring
adjusting the volume to very low or completely muting the sound may result
in the disaster to the patient. The most reliable way of monitoring the patient
is at the same time of using monitoring equipment correctly, manual
monitoring should be carried out.
 This vital signs monitor is intended for use only by medical professionals in
health care institutions.
 To avoid electrical shock, you shall not open any cover by yourself. Service
must be carried out by qualified personnel.
 Use of this device may affect ultrasonic imaging system in the presence of the
interfering signal on the screen of ultrasonic imaging system. Keep the
distance between the monitor and the ultrasonic imaging system as far as
possible.
 It is dangerous to expose electrical contact or applicant coupler to normal
saline, other liquid or conductive adhesive. Electrical contact and coupler
such as cable connector, power supply and parameter module socket-inlet
and frame must be kept clean and dry. Once being polluted by liquid, they
must be thoroughly dried. If to further remove the pollution, please contact
your biomedical department or Mindray.
It is important for the hospital or organization that employs this equipment to carry out a
reasonable maintenance schedule. Neglect of this may result in machine breakdown or injury
of human health.

III
Warranty
THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES,
EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF MERCHANT ABILITY OR
FITNESS FOR ANY PARTICULAR PURPOSE.
Exemptions
Mindray's obligation or liability under this warranty does not include any transportation or
other charges or liability for direct, indirect or consequential damages or delay resulting from
the improper use or application of the product or the substitution upon it of parts or
accessories not approved by Mindray or repaired by anyone other than a Mindray authorized
representative.
This warranty shall not extend to any instrument which has been subjected to misuse,
negligence or accident; any instrument from which Mindray's original serial number tag or
product identification markings have been altered or removed, or any product of any other
manufacturer.
Safety, Reliability and Performance
Mindray is not responsible for the effects on safety, reliability and performance of the
VS-800 vital signs Monitor if:
■ Assembly operations, extensions, re-adjusts, modifications or repairs are carried out
by persons other than those authorized by Mindray.
■ The VS-800 is not used in accordance with the instructions for use, or the electrical
installation of the relevant room does not comply with NFPA 70: National Electric
Code or NFPA 99: Standard for Health Care Facilities (Outside the United States, the
relevant room must comply with all electrical installation regulations mandated by the
local and regional bodies of government).

IV
Return Policy
Return Procedure
In the event that it becomes necessary to return a unit to Mindray, the following procedure
should be followed:
1. Obtain return authorization. Contact the Mindray Service Department and obtain a
Customer Service Authorization (Mindray) number. The Mindray number must appear on
the outside of the shipping container. Return shipments will not be accepted if the
Mindray number is not clearly visible. Please provide the model number, serial number,
and a brief description of the reason for return.
2. Freight policy. The customer is responsible for freight charges when equipment is
shipped to Mindray for service (this includes customs charges).
Company Contact
Address: Mindray Building, 12th Keji Road South, Hi-tech
Industrial Park, Nanshan, Shenzhen, P.R.China
Phone: [phone] [phone]
Fax: [phone] [phone]

V
Safety Precautions
1 . Meaning of Signal Words
In this manual, the signal words DANGER, WARNING, and CAUTION are used
regarding safety and other important instructions. The signal words and their meanings are
defined as follows. Please understand their meanings clearly before reading this manual.
Signal word Meaning
DANGER Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
CAUTION Indicates a potentially hazardous situation which, if not avoided,
may result in property damage.
2 . Meaning of Safety Symbols
Symbol Description
Type-BF applied part
"Attention" (Refer to the operation manual.)
3 . Safety Precautions
Please observe the following precautions to ensure the safety of service engineers as well as
operators when using this system.
DANGER: Do not use flammable gasses such as anesthetics, or flammable
liquids such as ethanol, near this product, because there is danger
of explosion.

VI
WARNING: Do not connect this system to outlets with the same circuit
breakers and fuses that control current to devices such as
life-support systems. If this system malfunctions and
generates an overcurrent, or when there is an instantaneous
current at power ON, the circuit breakers and fuses of the
building’s supply circuit may be tripped.
CAUTION: 1. Malfunctions due to radio waves
(1) Use of radio-wave-emitting devices in the proximity of this
kind of medical electronic system may interfere with its
operation. Do not bring or use devices which generate radio
waves, such as cellular telephones, transceivers, and radio
controlled toys, in the room where the system is installed.
(2) If a user brings a device which generates radio waves near
the system, they must be instructed to immediately turn OFF
the device. This is necessary to ensure the proper operation
of the system.
2. Do not allow fluids such as water to contact the system or
peripheral devices. Electric shock may result.

Content
I
Content
Chapter 1 Monitor Description..........................................................................................1-1
1.1 Intended Use..............................................................................................................1-1
1.2 Environmental Specifications .....................................................................................1-1
Chapter 2 Principles of Operation....................................................................................2-1
2.1 General ......................................................................................................................2-1
2.2 Hardware Description.................................................................................................2-2
2.3 Software Description................................................................................................2-13
2.4 System parameters..................................................................................................2-17
Chapter 3 Chapter Specifications.....................................................................................3-1
3.1 Type of Monitor ..........................................................................................................3-1
3.2 Specifications of Monitor............................................................................................3-1
Chapter 4 Machine Disassembly/assembly and troubleshooting.....................................4-1
4.1 Disassembly/assembly Figure....................................................................................4-1
4.2 Inter-board Connections...........................................................................................4-12
4.2 Troubleshooting........................................................................................................4-16
Chapter 5 Machine Test and Material List........................................................................5-1
5.1Test Procedure............................................................................................................5-1
5.2 Material List................................................................................................................5-3
5.3 NIBP Calibration Method............................................................................................5-7
Chapter 6 Maintenance and Cleaning ............................................................................6-1
6.1 Inspection...................................................................................................................6-1
6.2 General Cleaning .....................................................................................................6-2
6.3 Cleaning Solution.......................................................................................................6-2
6.4 Disinfection.................................................................................................................6-3
6.5 Contact Information for Maintenance and Technical Support.....................................6-3

Content
II
For your notes

Monitor Description
1-1
Chapter 1 Monitor Description
1.1 Intended Use
This Monitor is intended for monitoring the patient’s vital signs including Non-invasive Blood
Pressure (NIBP), Pulse Oxygen Saturation (SpO2), Pulse Rate (PR) and Temperature (TEMP) for
single adult, pediatric and neonatal patient.
This Monitor is intended for use in the health-care institutions such as Outpatient Clinics,
Emergency Departments, Medical Floors, Clinics and Nursing Departments. It, however, is not
intended for critical patient monitoring, hospital transport or home use.
This Monitor is to be operated by clinical physicians or appropriate medical staffs under the
direction of physicians. The operator of the monitor must be well tranined. Any operation by
unauthorized or non-tranined personnel is forbidden.
1.2 Environmental Specifications
1.2.1 Temperature Requirements
Operating ambient temperature 0 ºC - 40 ºC
10 ºC～＋40 ºC（50ºF -104ºF）(SmarTemp™ TEMP
module)
Storage temperature -20 ºC – 60 ºC
1.2.2 Relative Humidity
Operating relative humidity 15%-95%(non-condensing)
Storage relative humidity 10%-95%(non-condensing)
1.2.3 Altitude Requirements
atmospheric pressure at working conditon
(operating altitude)
70 to 106KPa
-500 to 4600m, -1640 to 15092ft
atmospheric pressure in Storage
(Storage altitude)
22 to 107.4KPa
-500 to 13100m, -1640 to 42979ft

Monitor Description
1-2
1.2.4 Power Requirements
Voltage: AC 100-240 V, 50/60 Hz
Power: 70VA
1.2.5 Rechargeable Battery
 Rechargeable lead-acid battery, 2.3 Ah, 12V
Minimum of 260min:
The monitor runs on power supplied by the new fully-charged battery in the following
conditions:
Ambient temperature: 25ºC
Monitor configuration: SpO2 (Continuous measurement) and NIBP (one auto NIBP
measurement per 15min)
Charge time: Maximum of 8h
 Lithium battery, 4.4Ah, 11.1V
Minimum of 620min
The monitor runs on power supplied by the new fully-charged battery in the following
conditions:
Ambient temperature: 25ºC
Monitor configuration: SpO2 (Continuous measurement) and NIBP (one auto NIBP
measurement per 15min)
Charge time: Maximum of 8h
 Time to shutdown at low battery power: 5 to 15min after the first battery-low alarm (a
new fully-charged battery should be used)

Principles of Operation
2-1
Chapter2 Principles of Operation
2.1 General
The whole system consists of mechanical, hardware and software parts, as follows:
System
Mechanical Hardware Software
System
software
Parameter
software
Upgrade
software
Printer
software
Power board
Main board
Key&display
board
Parameter
board
Host
Recorder
Battery
chamber
TEMP module
chamber
Recorder board
Connection
cables
Figure 1 System structure
As shown in Figure 2-1, the VS-800 Vital Signs Monitor consists of
• 4 mechanical parts: host, recorder, TEMP module chamber and rechargeable battery
chamber;
• 6 hardware parts: main board, key&displays board, parameter boards, recorder board,
connection cables and power board;
• 4 software parts: System software, Parameter software, Upgrade software and printer
software.

Principles of Operation
2-2
2.2 Hardware Description
The hardware structure of the VS-800 is shown as Figure 2-2:
NIBP module
LED &
KEY
RS232
LCD Main board
Key&display
board
SpO2 module
Recorder
Ethernet
Power board
Speaker Battery
AC
Communication/p
ower supply
NurseCall
Power
supply
VS-800
Fan
Isolation power
board *
TEMP module
* Mindray SpO2 module does not require the isolation power board.
Communication/p
ower supply
Figure 2 Structure of hardware
Note1: The TEMP module mentioned in this manual is reserved for future use.
The hardware connections of the VS-800 Vital Sings Monitor are as shown in Figure 2-3:

Principles of Operation
2-3
Figure 3 Connections of VS-800 hardware
As shown in the figure above, the core of the system is the main board, from which the power
is adapted to all parameter modules; the parameter modules directly communicate with the
main board, and the measurement and status of all modules are controlled by the main board.
The functions and operation principles of the VS-800 hardware parts are detailed respectively
in the following sections.

Principles of Operation
2-4
2.2.1 Main Board
2.2.1.1 Principle diagram
CPU
PHY
RTL8201
RTC E2PROM
Audio process
circuit
FlashSDRAM
SPI
Serialport 1: NIBP
Watchdog
RS232
LCD KEY
Serialport 0
Serialport 3: Temp
Serialport 2: SpO2
RS232 IC
Serialport 4: Recorder
Ethernet
Linear power
3.3V
1.5V
5.0V
Speaker
LED
FPGA
Nurse Call
12V
Figure 4 Operation principle of the main board
2.2.1.2 Principle
The main board communicates with all parameter modules and recorder module through serial
ports; the power of the parameter modules is adapted from the main board.
The main board supplies displaying information for the key&displays board detects the keys
and realizes the user’s interface.
The audio process circuit of the main board drives the speaker, thus to realize audible alarms,
key tones and PITCHTON.
The main board controls the alarm indicator through the signal wire is adapted from the
key&displays board.
In addition, the main board provides the nurse call connector, network connector and R232
connector.
The real-time clock is realized by the RTC chip to which the power is supplied fromAC mains
or by the battery when available. When the AC power or battery is unavailable, the built-in
battery of the RTC chip supplies the power, thus guaranteeing the normal working status of the
clock.
SDRAM is responsible for storing data temporarily and running programs; FLASH serves as
the system program memory and trend data memory; E2PROM serves as the device
configuration memory.

Principles of Operation
2-5
2.2.1.3 Units of main board
2.2.1.3.1 FPGA
FPGA is used for:
 Controlling STN-LCD
The PFGA drives the display of the monochromatic STN-LCD module, including the RAM and
displaying sequence; it communicates with the key&displays board CPLD.
The FPGA transmits data displayed by LEDs and receives key information by Means of
communicating with keypad CPLD through synchronous serial port.
 Extending serial ports
The FPGA extends 3 serial ports for the communications with parameter modules.
 Extending I/O port
The FPGA extends the I/O port for controlling the NURSE CALL circuit.
 Generating frequency-adjustable signal
The FPGA generates the frequency-adjustable signal which is used by the audio process
circuit.
2.2.1.3.2 Audio process circuit
Following the common scheme regarding the key&displays board audio process circuit, the
audio process circuit generates envelope signals by using the PWM function of the CPU, and
generates audio frequency signals by using the FPGA.
2.2.1.3.3 ADC circuit
The ADC circuit detects ADV, +12V and battery voltages as well as the battery status voltage
by using the A/D converter. The A/D converter Provides a I2C bus interface. The CPU
simulates the I2C bus signal with two I/O ports.
2.2.1.3.4 Network connector
To guarantee that the earth wire of the network connector can pass the 1500V high-voltage
test, isolated components such as the network transformer must be placed near the RJ45
socket and kept a specific distance from other components.
2.2.1.3.5 RS232 connector
The RS232 connector is made of the UART module of the CPU and the RS232 chip. The
RS232 chip has the ESD protection function (±15KV).

Principles of Operation
2-6
2.2.1.3.6 NURSE CALL connector
2.2.1.3.7 The NURSE CALL connector controls the NURSE CALL signal by using an I/O
port extended by the FPGA.
2.2.2 Power Board
2.2.2.1 General
The power board converts the power input (from AC mains or battery) to different working
voltages for other boards; it also has the function of charging the battery.
2.2.2.2 Principle diagram
According to the design requirements, the power board can be divided into three parts:AC/DC
isolation converter, DC/DC converter and charging circuit, as shown in Figure 2-5.
EMI filter Rectifer & filter
PWM
controller Current detection
Start-up
circuit
Rectifer
&filter
16.8
V
Coupler feeckback
& isolation circuit
AC
input
Charging
circuit Battery
DC/DC
converter
12V
output
DC/DC
converter 3.3V output
Switchcircuit
Flyback converter OVP&OCP
OVP&OCP
OVP&OPP
LDO
circuit 5V output
Figure 5 Operation principle of the power board
2.2.2.3 Principle
After theAC input reaches the power board through the connection 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 the DC/DC 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 voltages by
corresponding DC/DC converters and LDO circuit. In case the AC input is unavailable, the
battery can supplies power for the DC/DC converters to get the 12V, 5V and 3.3V DC voltages.
Meanwhile, the 12V, 5V and 3.3V DC outputs are under the control of the switch signal.

Principles of Operation
2-7
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.
2.2.3 Key&displays board
2.2.3.1 General
The key&displays board provides the user’s interface. The main board supplies the power for
the key&displays board. The LCD module, 7-segment digit display, LED indicators and keys
are integrated on this board.
Principle diagram
STN LCD
module
Key
matrix
Start-up signal
Start-up
circuit
LED
CPLD LED&KEY
OFF/STANDBY
detection
Switch
VSB
3.3V
ADV
3.3V disable
Figure 6 Operation principle of the key&displays board
2.2.3.2 Units
2.2.3.2.1 LCD module
This module has the function of adjusting the contrast and brightness in 10 levels,
Self-provided drive.
The FPGA controls the LCD. It transmits data signals and control signals to the LCD drive to
realize the display on the LCD.
The main board supplies the 3.3V power for the logic part of the LCD module, and the power
board supplies the 3.3V power for the backlight assembly.
This module displays menus, trend data and plethysmograms.

Principles of Operation
2-8
2.2.3.2.2 LED
There are Six groups of 7-segment digit display on the key&displays board. They are used for
displaying the systolic pressure, diastolic pressure, mean pressure/cuff pressure, SpO2, PR
and Temp; every group is of 3 digits.
The signal is transmitted from the main board FPGA to the CPLD, and is displayed by the
7-segment digit displays driven by the CPLD scanning.
The AC indicator is driven by the ADV voltage output from the power board.
The working status indicator (ON/STADNDBY indicator) is driven by the 3.3V voltage.
The battery indicator is controlled by the flash control signal, ADV signal and /BC signal
together. When the system is powered by the battery only, the CPLD outputs the flash control
signal and the battery indicator flashes; when the system is power by AC mains, the ADV
voltage drives the battery indicator to ON. The /BC signal is transmitted from the power board
to the cathode of the battery indicator. When there is no battery in the monitor, the resistance
of the /BC becomes high, so the battery indicator will never become ON.
The bichrome LED alarm indicator is driven by the 3.3V voltage and controlled by the flash
control signal output from the CPLD.
For other LED indicators, the anodes are connected to 3.3V voltages and are controlled by the
CPLD I/O port.
The displaying and controling is signal of the indicators above is delivered from the main board
FPGA to the CPLD.
2.2.3.2.3 Keys
There are totally 12 keys.
ON/STANDBY key: In the OFF status, press this key to power on the monitor; in the working
status, press this key for less than 1s to enter the standby status. Press this key for more than
2s to power off the monitor.
The other 11 keys form a 3×4 matrix. The CPLD scans the key matrix, and performs the key
debouncing after detecting any key input signal. If the input signal is valid, the CPLD saves the
current key input code and transmits it to the main board.