Mindray H-046-011262-00-N19-N22-Service-Manual-FDA-5.0 DIRECT FEED LOOP DISINFECTION TANK AND HEADER INSTALLATION & OPERATION MANUAL
BeneVision N22/BeneVision N19
Patient Monitor
Service Manual
opyright 2018-2019 Shenzhen Mindray Bio-Medical Electronics Co., Ltd. All rights reserved.
C
Release time: January 2019
Revision 5.0
BeneVision N22/BeneVision N19 Patient 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.
Mindray intends to maintain the contents of this manual as confidential information. Disclosure of the information in
this manual in any manner whatsoever without the written permission of Mindray is strictly forbidden. Release,
amendment, reproduction, distribution, rent, adaption and translation of this manual in any manner whatsoever
without the written permission of Mindray is strictly forbidden.
, is the trademark, registered or otherwise, of Mindray in China and other countries. All other trademarks
that appear in this manual are used only for editorial purposes without the intention of improperly using them. They are
the property of their respective owners.
This posting serves as notice under 35 U.S.C.§287(a) for Mindray patents: http://www.mindrayna.com/patents.
WARNING
Federal Law (USA) restricts this device to sale by or on the order of a physician or other practitioner
licensed by U.S. state law to use or order the use of this device.
NOTE
This manual describes all features and options. The equipment may not have all of them. Contact
Mindray Technical Support department for any questions.
II BeneVision N22/BeneVision N19 Patient Monitor Service Manual
Manufacturer’s Responsibility
Contents of this manual are subject to changes without prior notice.
Mindray is responsible for safety, reliability and performance of this product only on the condition that:
All installation operations, expansions, changes, modifications and repairs of this product are conducted by
Mindray authorized personnel;
The electrical installation of the relevant room complies with the applicable national and local requirements;
This product is operated under strict observance of the operator’s manual.
Return Policy
In the event that it becomes necessary to return a unit to Mindray, follow the instructions below.
1. Obtain a return authorization.
Contact the Mindray Service Department and obtain a Mindray Customer Service Authorization Number. The
Mindray Customer Service Authorization Number must appear on the outside of the shipping container. Return
shipments will not be accepted if the Mindray Customer Service Authorization 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 this product is shipped to Mindray for service (including any
relevant customs fees or other freight related charges).
3. Return address
Please send the part(s) or equipment to the address offered by Customer Service Department.
BeneVision N22/BeneVision N19 Patient Monitor Service Manual III
Service
Mindray maintains a network of service representatives and factory-trained distributors. Prior to requesting service,
perform a complete operational check of the instrument to verify proper control settings. If operational problems
continue to exist, contact Mindray service.
In North America contact the Service Department at (800) 288-2121, ext: 8116 for Technical Support or (201) 995-8000
for assistance in determining the nearest field service location.
Please include the instrument model number, the serial number, and a description of the problem with all requests for
service.
Any questions regarding the warranty should be directed to your local sales or service representative.
NOTE
Upon request, Mindray provides circuit diagrams, component part lists, descriptions, calibration
instructions, or other information which assist the user’s appropriately qualified technical
personnel to repair those parts of the equipment which are designated by Mindray DS USA, Inc. as
repairable.
Contact Information
Manufacturer:
Address:
Tel:
Fax:
Website:
Distributor:
Address:
Tel:
Website:
Shenzhen Mindray Bio-Medical Electronics Co., Ltd.
Mindray Building, Keji 12th Road South, High-tech Industrial Park, Nanshan, Shenzhen
518057 P.R. China
+86 755 81888998
+86 755 26582680
www.mindray.com
Mindray DS USA, Inc.
800 MacArthur Boulevard, Mahwah, New Jersey 07430 USA
1.800.288.2121, 1.201.995.8000
www.mindray.com
IV BeneVision N22/BeneVision N19 Patient Monitor Service Manual
Preface
Manual Purpose
This manual provides detailed information about the assembly, disassembly, 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. Use of the manual is necessary for proper
equipment maintenance and will help to eliminate equipment damage and personal injury.
This manual is based on the maximum configuration; therefore, some contents may not apply to your monitor. If you
have any question, please contact our Customer Service Department.
Intended Audience
This manual is for biomedical engineers, authorized technicians or service representatives responsible for
troubleshooting, repairing and maintaining the patient monitors.
Contact your local Mindray Service Organization for information on product courses which address service and support
for this product.
Passwords
A password may be required to access different modes within the monitor. The passwords are listed below:
User maintenance: MIN888 (User adjustable)
Configuration mode: MIN315 (User adjustable)
It is recommended that the user should change the passwords for user maintenance and configuration mode once they
take ownership of the equipment.
BeneVision N22/BeneVision N19 Patient Monitor Service Manual V
FOR YOUR NOTES
VI BeneVision N22/BeneVision N19 Patient Monitor Service Manual
Contents
1 Safety ................................................................................................................................................................................. 1-1
1.1 Safety Information .......................................................................................................................................................................................... 1-1
1.1.1 DANGER ................................................................................................................................................................................................ 1-2
1.1.2 Warnings .............................................................................................................................................................................................. 1-2
1.1.3 Cautions ............................................................................................................................................................................................... 1-2
1.1.4 Notes ..................................................................................................................................................................................................... 1-2
1.2 Equipment Symbols ....................................................................................................................................................................................... 1-2
2 Operation Theory .............................................................................................................................................................. 2-1
2.1 Overview ............................................................................................................................................................................................................ 2-1
2.2 Product System Architecture ...................................................................................................................................................................... 2-1
2.2.1 Functions of the Main Control Module ..................................................................................................................................... 2-3
2.2.2 AC-DC Module ................................................................................................................................................................................... 2-4
2.2.3 Functions and Socket Definitions of the DCDC Board ........................................................................................................ 2-4
2.2.4 Front Housing Interface Board ..................................................................................................................................................... 2-7
2.2.5 iView Substrate .................................................................................................................................................................................. 2-8
2.3 Power System ................................................................................................................................................................................................... 2-8
2.3.1 Power Diagram of the Main Unit and the Module Rack ..................................................................................................... 2-8
2.3.2 The Secondary Screen of N22/N19 Uses Independent AC Adapter for Power Supply ............................................ 2-9
2.4 Signal Logic Flow ............................................................................................................................................................................................ 2-9
2.4.1 Startup Signal Flow .......................................................................................................................................................................... 2-9
2.4.2 Display Signal Flow ....................................................................................................................................................................... 2-10
2.4.3 Display Brightness Control ......................................................................................................................................................... 2-11
2.4.4 Module Initialization ..................................................................................................................................................................... 2-12
3 Testing and Maintenance .................................................................................................................................................. 3-1
3.1 Introduction ...................................................................................................................................................................................................... 3-1
3.1.1 Test Equipment .................................................................................................................................................................................. 3-1
3.1.2 Preventative Maintenance ............................................................................................................................................................. 3-1
3.1.3 Recommended Frequency ............................................................................................................................................................ 3-2
3.2 Preventative Maintenance Procedures ................................................................................................................................................... 3-3
3.2.1 Visual Inspection ............................................................................................................................................................................... 3-3
3.2.2 NIBP Tests ............................................................................................................................................................................................. 3-4
3.2.3 Sidestream and Microstream CO2 Tests .................................................................................................................................... 3-6
3.2.4 AG Tests ................................................................................................................................................................................................ 3-8
3.3 Power On Test ................................................................................................................................................................................................ 3-11
3.4 Module Performance Tests ....................................................................................................................................................................... 3-11
3.4.1 ECG Tests ........................................................................................................................................................................................... 3-11
3.4.2 Resp Performance Test ................................................................................................................................................................. 3-12
3.4.3 SpO2 Test ........................................................................................................................................................................................... 3-12
3.4.4 NIBP Tests .......................................................................................................................................................................................... 3-12
3.4.5 Temp Test .......................................................................................................................................................................................... 3-13
3.4.6 IBP Tests ............................................................................................................................................................................................. 3-13
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 1
3.4.7 C.O. Test .............................................................................................................................................................................................. 3-15
3.4.8 Sidestream and Microstream CO2 Tests ................................................................................................................................... 3-15
3.4.9 AG Tests ................................................................................................................................................................................................ 3-15
3.4.10 EEG Test ............................................................................................................................................................................................ 3-15
3.4.11 BIS Test .............................................................................................................................................................................................. 3-17
3.4.12 CCO/SvO2 Tests ............................................................................................................................................................................... 3-17
3.4.13 NMT Tests ......................................................................................................................................................................................... 3-18
3.5 Nurse Call Relay Performance Test ......................................................................................................................................................... 3-19
3.6 Analog Output Performance Test ........................................................................................................................................................... 3-19
3.7 Electrical Safety Tests .................................................................................................................................................................................. 3-20
3.8 Recorder Check ............................................................................................................................................................................................. 3-20
3.9 Network Print Test ........................................................................................................................................................................................ 3-21
3.9.1 Device Connection and Setup ................................................................................................................................................... 3-21
3.10 Battery Check .............................................................................................................................................................................................. 3-21
3.11 Mounting Check ......................................................................................................................................................................................... 3-22
3.11.1 Safety check ................................................................................................................................................................................... 3-22
3.11.2 Overall Test and Check of Installed System ........................................................................................................................ 3-22
4 Troubleshooting ................................................................................................................................................................ 4-1
4.1 Introduction ..................................................................................................................................................................................................... 4-1
4.2 Part Replacement ........................................................................................................................................................................................... 4-1
4.3 Check before Powering on the Monitor ................................................................................................................................................. 4-1
4.4 Software Version Check ................................................................................................................................................................................ 4-1
4.5 Technical Alarm Check .................................................................................................................................................................................. 4-2
4.6 Blank Screen upon Startup ......................................................................................................................................................................... 4-2
4.7 Troubleshooting Guide ................................................................................................................................................................................ 4-3
4.7.1 Power On/Off Failures ..................................................................................................................................................................... 4-3
4.7.2 Display Failures .................................................................................................................................................................................. 4-4
4.7.3 Module Rack Failures ...................................................................................................................................................................... 4-5
4.7.4 Alarm Failures .................................................................................................................................................................................... 4-6
4.7.5 Output Interface Failures ............................................................................................................................................................... 4-7
4.7.6 Power Supply Failures ..................................................................................................................................................................... 4-7
4.7.7 Network Related Problems ........................................................................................................................................................... 4-8
4.7.8 Device Integration Failures ........................................................................................................................................................... 4-9
5 Hardware Configuration Options .................................................................................................................................... 5-1
5.1 Overview ........................................................................................................................................................................................................... 5-1
5.2 Optional Parameter Function Modules .................................................................................................................................................. 5-2
5.3 Optional Functional Assemblies ............................................................................................................................................................... 5-3
5.3.1 Installing an SMR .............................................................................................................................................................................. 5-3
5.3.2 Installing an Secondary Display .................................................................................................................................................. 5-3
5.3.3 Upgrading Split Unit ....................................................................................................................................................................... 5-4
5.3.4 Setting up Wireless Network Functions ................................................................................................................................... 5-4
5.3.5 Upgrading Handle Assembly ....................................................................................................................................................... 5-4
5.3.6 Installing the Main Unit Battery .................................................................................................................................................. 5-4
2 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
5.3.7 Upgrading iView System Functions ........................................................................................................................................... 5-4
6 Disassembly and Repair.................................................................................................................................................... 6-1
6.1 Tools ..................................................................................................................................................................................................................... 6-1
6.2 Preparations for Disassembly ..................................................................................................................................................................... 6-1
6.3 Whole Unit Disassembly ............................................................................................................................................................................... 6-1
6.3.1 Disassembling Display and Main Unit (Main Unit and Display Integrated Installation) ......................................... 6-2
6.3.2 Removing Handle/Encoder (Optional Encoder) .................................................................................................................... 6-3
6.3.3 Removing Handle Cover ................................................................................................................................................................ 6-4
6.3.4 Removing Main Unit Housing/Main Unit Interface Adapter Board (Main Unit and Display Separated
Installation) .................................................................................................................................................................................................... 6-4
6.3.5 Removing Display Interface Adapter Board (Main Unit and Display Separated Installation) ............................... 6-5
6.4 Disassembling Display (Capacitive Touchscreen) ............................................................................................................................... 6-6
6.4.1 Removing Display Rear Housing Assembly (D19)................................................................................................................. 6-6
6.4.2 Removing Display Rear Housing Assembly (D22)................................................................................................................. 6-7
6.4.3 Removing Switch Keypad Board ................................................................................................................................................. 6-7
6.4.4 Removing Display Interface Board/Touchscreen Panel ...................................................................................................... 6-8
6.4.5 Removing USB Board ...................................................................................................................................................................... 6-9
6.4.6 Removing LED Board/Indicator Board ................................................................................................................................... 6-10
6.5 Disassembling Main Unit .......................................................................................................................................................................... 6-10
6.5.1 Removing iView Assembly (iView Assembly Optional).................................................................................................... 6-10
6.5.2 Removing iView Assembly Support Board/USB Interface Board (iView Assembly Optional) ........................... 6-11
6.5.3 Removing Battery .......................................................................................................................................................................... 6-11
6.5.4 Removing ACDC Power Board .................................................................................................................................................. 6-12
6.5.5 Removing DCDC Power Management Board ...................................................................................................................... 6-13
6.5.6 Removing Antenna Module and Antenna Cable ............................................................................................................... 6-13
6.5.7 Removing SSD Hard Disk ............................................................................................................................................................ 6-14
6.5.8 Removing Main Control Board .................................................................................................................................................. 6-14
6.5.9 Removing Battery Backplane .................................................................................................................................................... 6-15
6.6 Disassembling the Module Rack ............................................................................................................................................................ 6-15
6.6.1 Disasembling the Handle and Hooks ..................................................................................................................................... 6-15
6.6.2 Disassembling the Rear Case of Module Rack..................................................................................................................... 6-16
6.6.3 Disassembling the Module Rack Interface Board .............................................................................................................. 6-16
6.6.4 Disassembling the Infrared Backplane of Module Rack .............................................................................................. 6-17
6.7 Disassembling the M51C Module .......................................................................................................................................................... 6-18
6.7.1 Disassembling the Front Panel Assembly ............................................................................................................................. 6-18
6.7.2 Disassembling the Parameter Board ...................................................................................................................................... 6-18
6.7.3 Disassembling the SpO2 board ................................................................................................................................................ 6-19
6.7.4 Disassembling the Infrared Board ........................................................................................................................................... 6-19
6.7.5 Removing the Pump and Valve................................................................................................................................................. 6-19
7 Parts ................................................................................................................................................................................... 7-1
7.1 Main Unit ........................................................................................................................................................................................................... 7-1
7.1.1 Exploded View .................................................................................................................................................................................... 7-1
7.1.2 Parts List ............................................................................................................................................................................................... 7-1
7.2 D19 Display Assembly (Capacitive Screen) ........................................................................................................................................... 7-3
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 3
7.2.1 Exploded View .................................................................................................................................................................................... 7-3
7.2.2 Parts List ............................................................................................................................................................................................... 7-3
7.3 D22 Display Assembly (Capacitive Screen) ........................................................................................................................................... 7-5
7.3.1 Exploded View .................................................................................................................................................................................... 7-5
7.3.2 Parts List ............................................................................................................................................................................................... 7-5
7.4 Encoder Assembly .......................................................................................................................................................................................... 7-7
7.4.1 Exploded View .................................................................................................................................................................................... 7-7
7.4.2 Parts List ............................................................................................................................................................................................... 7-7
7.5 Module Rack ..................................................................................................................................................................................................... 7-8
7.5.1 Exploded View .................................................................................................................................................................................... 7-8
7.5.2 Parts List ............................................................................................................................................................................................... 7-8
7.6 iVIEW Module ................................................................................................................................................................................................... 7-9
7.6.1 Exploded View .................................................................................................................................................................................... 7-9
7.6.2 Parts List ............................................................................................................................................................................................... 7-9
7.7 Main Unit Separated Installation Auxiliary Accessories ................................................................................................................. 7-10
7.7.1 Exploded View .................................................................................................................................................................................. 7-10
7.7.2 Parts List ............................................................................................................................................................................................. 7-10
7.8 Main Unit Base Assembly .......................................................................................................................................................................... 7-11
7.8.1 Exploded View .................................................................................................................................................................................. 7-11
7.8.2 Parts List ............................................................................................................................................................................................. 7-11
7.9 Battery Cavity Assembly ............................................................................................................................................................................ 7-13
7.9.1 Exploded View .................................................................................................................................................................................. 7-13
7.9.2 Parts List ............................................................................................................................................................................................. 7-13
7.10 M51C Module .............................................................................................................................................................................................. 7-14
7.10.1 Exploded View ............................................................................................................................................................................... 7-14
7.10.2 Parts List .......................................................................................................................................................................................... 7-14
A Electrical Safety Inspection .............................................................................................................................................. A-1
A.1 Power Cord Plug ............................................................................................................................................................................................. A-1
A.2 Device Enclosure and Accessories ........................................................................................................................................................... A-1
A.3 Device Labelling ............................................................................................................................................................................................. A-2
A.4 Scheduled Electrical Safety Inspection .................................................................................................................................................. A-2
A.5 Electrical Safety Inspection after Repair ................................................................................................................................................ A-2
A.6 Electrical Safety Inspection Tes t ................................................................................................................................................................ A-3
4 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
1 Safety
DANGER
1.1 Safety Information
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, could 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.
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 1-1
1.1.1 DANGER
There are no dangers that refer to the product in general. Specific “Danger” statements may be given in the respective
sections of this manual.
1.1.2 Warnings
WARNING
All installation operations, expansions, changes, modifications and repairs of this product should be
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.
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.
Dispose of the package material, observing the applicable waste control regulations and keeping it out
of children’s reach.
1.1.3 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 equipment to the power line, verify the voltage and frequency ratings of the
power line are the same as those indicated on the equipment’s label or in this manual.
Protect the equipment from damage caused by drop, impact, strong vibration or other mechanical force
during servicing.
1.1.4 Notes
NOTE
Refer to Operation Manual for detailed operation and other information.
1.2 Equipment Symbols
See the N series Operator’s Manual (P/N: 046-011259-00) for information about the symbols used on this product and its
packaging.
1-2 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
2 Operation Theory
2.1 Overview
TheN22/N19 patient monitor provides rich functionality to monitor patient’s vital signs including ECG, Resp, SpO2, Temp,
N IB P, I B P, CO
monitor supports alarm management, data review, recording and printing of patient reports, and calculation.
TheN22/N19 patient monitor is applicable to various departments in a hospital, in particular, to the applications in
intensive care, first aid, operation room and the relevant departments.
The N22/N19patient monitor provides clinical decision-making tools to assist the medical personnel in making diagnosis
and clinical judgment faster and more accurately. Information access to clinical information system can meet the
information requirements of doctors and nurses so as to shorten the time of obtaining information and analyze the
clinical experience. These features could better meet the application requirements of high-end users.
, AG, O2, RM, C.O., CCO, ICG, SvO2/ScvO2, BIS, EEG, NMT, tcGas and rSO2. Based on these parameters, the
2
2.2 Product System Architecture
N22/N19 monitor mainly consists of three parts: main unit, display and module rack. All-in-one installation or split-type
installation could be adopted for the main unit and the display.
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 2-1
ACDC
Power manage Board& interface board
Bay Trail Main
Board
Front Interface Board
For Integrate Type
Battery Interface
Board
WiFi
Module
Battery
LCD
Resistive
Touch
Panel
Speaker
Alarm
&logo LED
Board
Resistive
Touch Panel
Controller
Board
W1
W4
Backlight
LVDS
Remote
Receiver
(Reserved)
Touchpad&
knob&USB
Indicator
LED
Power
Button
W3
WD
W
2
DP USB NET
UART2 STATUS
UART1
W6
W8
SMR
SMR
SMR
W7
The main PCBAs of the system include:
Main unit: DCDC and interface board, ACDC board, and main board and interface board.
Display: display interface board
Module rack: Module rack interface board, and 8-slot module rack communication board.
2-2 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
2.2.1 Functions of the Main Control Module
The main board is supported by the Bay Trail platform and uses Intel’s Bay Trail-I E38xx series processors.
Architecture of the Main Board
As the core control unit of the system, the main board is responsible for such core functions of the system as display,
data processing and data storage.
The main board also provides high-speed interfaces, such as USB connector, DP interface and network connector.
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 2-3
2.2.2 AC-DC Module
The ACDC module converts the input voltage of 100~240V 50/60Hz AC into the output of 16V 10A DC.
2.2.3 Functions and Socket Definitions of the DCDC Board
2.2.3.1 Functions of the DCDC Board
The DCDC board is responsible for the conversion of the data signal of the main board into the external interface and is
responsible for generating the various DC voltages the hardware system requires and for implementing the power
management function. The major functions include:
Generation and management of 12V, 5V, 3.3V, Vbus and 3.3VB power supply required for the system operation;
Extension of connectors such as SMR;
Monitor startup and shutdown;
Battery management;
2.2.3.2 Definitions of the DCDC Board Socket
The DCDC board is the core for connecting other PCBAs inside the main unit, and the main sockets include:
16V DC input power socket used for connecting to the ACDC board
Connector Type B6PH-VS
Pin No. Signal Name Signal Direction Function Definition Remarks
1 16V IN DC input /
2 16V IN DC input /
3 16V IN DC input /
4 GND / Ground /
5 GND / Ground /
6 GND / Ground /
2-4 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
Power connector of the battery interface board
Used for connecting the charging and discharging power of the battery interface board.
Connector Type B4PS-VH
Pin No. Signal Name Signal Direction Function Definition Remarks
1 GND / Ground /
2 BAT BI Battery power /
3 BAT BI Battery power /
4 GND / Ground /
Signal connector of the battery interface board
Used for connecting the battery availability signal and SMB signal of the battery interface board.
Connector Type B3B-PH-K-S
Pin No. Signal Name Signal Direction Function Definition Remarks
1 BAT_BC IN Battery availability signal /
2 SMB_D BI SMBus data signal /
3 SMB_C OUT SMBus clock signal /
Power connector of the main board
Used for connecting the main board to provide 3.3V, 5V and 16V DC power to the main board.
Connector Type 43045-0800
Pin No. Signal Name Signal Direction Function Definition Remarks
1 3.3V OUT DC output /
2 5V OUT DC output /
3 5V OUT DC output /
4 16V OUT DC output /
5 GND / Ground /
6 GND / Ground /
7 GND / Ground /
8 GND / Ground /
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 2-5
Signal connector of the main board
Used for connecting the main board, including SPI, USB, UART, reset, power indicator and management signals.
Connector Type 5015714007
Pin No. Signal Name Signal Direction Function Definition Remarks
1 GND / Ground /
2 GND / Ground /
3 USB_DP BI USB D+ /
4 SPI_LVDS_CLKP IN SPI differential clock Reserved
5 USB_DM BI USB D- /
6 SPI_LVDS_CLKP IN SPI differential clock Reserved
7 GND / Ground /
8 GND / Ground /
9 USB_Hub_RST# IN USB Hub reset /
10 SPI_CLK IN SPI clock /
11 FPGA_RST# IN FPGA reset /
12 GND / Ground /
13 NC / No signal connection /
14 SPI_MOSI IN Primary output of SPI /
15 NC / No signal connection /
16 GND / Ground /
17 NC / No signal connection /
18 SPI_MISO OUT Secondary output of SPI /
19 NC / No signal connection /
20 GND / Ground /
21 GND / Ground /
22 SPI_CS# IN SPI chip select /
23 EC_S3# IN S3 power status /
24 SPI_CTL1 IN GPI /
25 EC_S4# IN S4 power Status /
26 SPI_CTL2 OUT GPO /
27 PLTRST#_Report IN CPU reset status /
28 EC_RST#_Report IN EC reset status /
29 AC_BC OUT AC availability /
30 GND / Ground /
31 Battery_Yellow OUT
32 M0_TXD OUT M0 UART sending /
33 Battery_Green OUT
34 M0_RXD IN M0 UART receiving /
35 PWROK OUT Power supply status /
36 NC / No signal connection /
37 PWR_BTN# OUT Main control startup and /
2-6 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
Battery driven by yellow
LED
Battery driven by green
LED
/
/
Connector Type 5015714007
Pin No. Signal Name Signal Direction Function Definition Remarks
shutdown
38 NC / No signal connection /
39 GND / Ground /
40 GND / Ground /
DC power output connector of the main unit
Used by the main unit for providing 12V power supply to the display.
Connector Type 43045-0409
Pin No. Signal Name Signal Direction Function Definition Remarks
1 12V OUT DC output /
2 12V OUT DC output Reserved
3 GND / Ground Reserved
4 GND / Ground /
2.2.4 Front Housing Interface Board
The front housing interface board and its peripheral circuits are mainly used for realizing the control of the alarm LED,
LOGO LED, backlight and audio, as well as the detection and transmission of the touchscreen, encoder and ambient
light.
As the front housing interface boardhas much to control, a microcontroller unit (MCU) is used for the central control. The
MCU is connected to the main control of the system through the DisplayPort AUX channel (DP AUX), and the USB
connection channel is reserved.
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 2-7
��5V
iPC support board
COME Type10
i
P
C
C
o
n
n
RJ45
m
S
A
T
A
SATA0
Conn
GbE
USB0
UART
0
HDMI
TMDS
HDMI to
MIPI-CSI2
CSI2 x4 Lane
16V
Power
Managment
PWR_BTN#
RST#
FAN
FAN
Control
FAN
Contro
l
5VCC
5VSB
Power
Switch
16V_iPC
SUS_S4#
16V Over
Current
Protection
3.3V DC-DC
5V DC-DC
Always on
VDD
5VSB
Power
Switch
SUS_S3#
5VCC
BD_16V
SUS_S3#
16V
SUS_S3#
BD_16V_OC#
BD_16V_EN
iPC_BC#
Connect
to GND
PCIe Port0
PCIe
GbE
MAC
/PHY
(I211-AT)
GbE
Debug
� Reserved�
TPM
Level
Shifter
TMDS
DDC
DDC
I2C
EEPROM
EDID
5VSB
16V
VDD_PG
&
0
0
0
SUS_S3#
VDD_PG
SUS_S3#
PWR_OK
Conn
USB Type A
Connector x
4
USB Hub
(USB2517
)
USB x 4
USB
CB_RST
#(COME)
RST#
BEEP
SPKR
LCD
backlight
Alarm LED
board
USB
12V
12V
12V
LCD
5V
5V
CPU
CPU of
main
control
5V@5
.2A
3.3V
Main board
Display interface board
Slow
start
power
Slow start
power
Power
Supply
DCDC
5V
3.3V
3
.3VLDO
MCU� M0�
12V
_EN
5
V_EN
3
.3V
_EN
DCDC board
4mA(Typ)
AC-
DC
board
Charging and
discharging
management
LED
DCDC
12V
12V
3.3V
VBUS
_EN
Charging
circuit
3.3V
Hot swap
circuit
Hot swap
circuit
Hot swap
circuit
Module rack1
Module rack3
12
V
12V
VBUS:
10V-
16V/140W(MAX)
16
V
iView module
12V
12V
EN
12V
12V
Module rack2
12V
12V
DCDC board
2.2.5 iView Substrate
iView substrate is mainly used to carry the COME module (COM Express module), extending the function of the COME to
standard interfaces as well as communication signals with the main board.
The COME module uses Type10 module (mechanical size: 55 mm x 84 mm) as defined in the specifications, and the
connection with the main board could be realized with one 220pin socket.
2.3 Power System
2.3.1 Power Diagram of the Main Unit and the Module Rack
The power management MCU is the core of the power management. In the system, 3.3V STB output could be realized
with any power input (AC or battery), which means that the power management MCU works properly. The display
interface board and module rack of the front housing could directly use the system's 12V power supply.
2-8 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
N22/N19 System
Primary
display
(split type)
Secondary
display
Main unit
AC adapter of
the secondary
display
AC power 1
AC power 2
Only signals, no power supply
User
Battery
Primary display
(all-in-one)
2.3.2 The Secondary Screen of N22/N19 Uses Independent AC Adapter for Power Supply
The connection is as shown below:
The battery is in the main unit, and the secondary screen is connected to the adapter. The primary and secondary
display controls are independent of each other, allowing the secondary display to be turned on or off without affecting
the complete system.
2.4 Signal Logic Flow
2.4.1 Startup Signal Flow
Major power-on process:
Startup signal -> DCDC board power-on 12V, 3.3V, and 5V
The main board operates based on the power-on sequence of the PC
The main control enters BIOS, initializes peripherals of the main control, reads EDID and sets the display to ON
The front housing enters the initialization state through the 12V power conversion
The SMR enters the initialization state through the 12V power conversion
Handshake would be implemented by the system after 40s, and the connection is established between the front
housing, SMR, and the main control
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 2-9
N22/N19 System
Front housing assembly (primary display)
Front Interface board
Main unit
DP
System
main
control
MCU and
firmware
of the
front
interface
board
DP
Reciver
USB
I2
C
USB
HUB
USB
Touchscreen
control board
Encoder
UART
Audio
circuit
Speaker
Alarm light
LOGO LED
Screen
backlight
Reserved
USB
External
Flash
Front housing assembly (
secondary display)
DP
USB
Ambient light
detection
Note: If the display is connected to the AC power supply, power failure of the main unit will not cause display power
failure.. Therefore, to completely disconnect the power supply from the system, disconnect the AC power cord of the
main unit, and hold the power switch for 15 seconds. Disconnect the AC power cord of the display..
2.4.2 Display Signal Flow
The display function is implemented through the output of the main control, and it is realized through sending the
signals to the front housing interface board through the DP interface. The front housing interface board converts the DP
signals to LVDS signals through the DP conversion chip to drive the display.
2-10 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
2.4.3 Display Brightness Control
N22/N19 System
Secondary display
Front interface board (all-in-one or split type)
Main board
Brightness
control
module
Backlight
Current
or voltage
USB&DP
DC-DC board
UART
Power
management
firmware
AC / Power
switching
test
System
software
Firmware of
the front
interface
board
Front interface board (all-in-one or split type)
Firmware of
the front
interface
board
USB&DP
Ambient light
detection
Brightness
control
module
Backlight
Current
or voltage
Ambient light
detection
The physical architecture is as shown below:
As shown in the figure above, the dashed line indicates the fast hardware channel reserved for the AC battery switching
event.
During operation, the system software adjusts the display brightness of the primary screen or secondary screen by
directly sending command to the primary screen or secondary screen, and the CPU within the primary screen or
secondary screen adjusts the backlight accordingly.
When using AC power supply, the main unit automatically identifies the power switch if the power switches to the
battery in case of sudden AC power off. The main unit sends command to the primary screen, and the brightness of the
primary screen is set down automatically.
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 2-11
2.4.4 Module Initialization
I nsert MPM into SMR
The modul e rack upl oads t he modul e
availability status
The system identifies the status and sends
the handshake command
Query for 1 minute continuously until
su ccess is achiev ed .
Check status self test
Status self test succeeded
Parameter configuration
Configurati on s ucceede d
The dev ice oper at es proper ly
Modul e fa ilure
Modul e fa ilure
Modul e fa ilure
Parameter module power-on sequence:
Power-on description using MPM, N1, or T1 as an example:
2-12 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
3 Testing and Maintenance
3.1 Introduction
To ensure the patient monitor always functions properly, qualified service personnel should perform regular
inspection, maintenance and test. This chapter provides a checklist of the testing procedures for the patient 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 patient monitor meets the
performance specifications. If the patient 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
All tests should be performed by qualified service personnel only.
Care should be taken when changing the settings in Maintenance and Configuration menus to avoid loss of
data.
Service personnel should possess a working knowledge of the test tools and make sure that test equipment
and cables are applicable.
3.1.1 Test Equipment
Required Test Equipment is listed in the specific test procedure.
3.1.2 Preventative Maintenance
The following sections provide a list of recommended preventative maintenance procedures. It is recommended to
verify accuracy and calibrate the patient monitor as needed at least once every two years (and once a year for CO
AG modules). See the following sections for detailed test procedures and contents.
and
2
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 3-1
3.1.3 Recommended Frequency
Check/Maintenance Item Frequency
Preventative Maintenance Tests
Visual inspection When first installed or reinstalled.
NIBP tests
Sidestream and
Microstream CO
tests
2
AG tests
Performance Tests
ECG tests
Resp test
SpO2 test
NIBP test
Temp test
IBP tests
C.O. test
Sidestream and
Microstream CO
tests
2
Pressure check
Leakage test
Leakage test
Performance test
Calibration
Performance test
Calibration
Performance test
Calibration
Pressure check
Leakage test
Performance test
Pressure calibration
Leakage test
Performance test
Calibration
Leakage test
1. If the user suspects that the measurement is incorrect.
2. Following any repair or replacement of relevant module.
3. For NIBP module, at least once every two years; for CO2 and AG
modules, once a year.
4. AG leakage test should be performed before AG measurement.
1. If the user suspects that the measurement is incorrect.
2. Following any repair or replacement of relevant module.
3. At least once every two years. For CO
AG and NMT modules, at
2,
least once a year.
4. AG leakage test should be performed before AG measurement.
AG tests
Performance test
Calibration
EEG test
BIS test
Interconnecting function
CCO/SvO2 tests
Output calibration
Performance test
NMT tests
Sensor check
Nurse call relay performance test
Analog output performance test
If the user suspects that the nurse call or analog output does not
function properly.
3-2 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
Electrical Safety Tests
Earth impedance
Electrical safety tests
Earth leakage test
Patient leakage current
Patient auxiliary current
Other Tests
Power on test
Recorder check Following any repair or replacement of the recorder.
1. Following any repair or replacement of the power module.
2. When the patient monitor is dropped.
3. At least every two years or as required.
1. When first installed or reinstalled.
2. Following any maintenance or the replacement of any main unit
parts.
Network print test
Device integration check
Function test
Battery check
Performance test
Mounting check
Note: Performance test is not required for the rSO
and the ScvO
needs to be calibrated prior to use.
2
1. When first installed.
2. Whenever the printer is serviced or replaced.
1. When first installed.
2. Following any repair or replacement of the external device.
1. When first installed.
2. Whenever a battery is replaced.
Once every two months or when the battery run time is reduced
significantly.
1. When first installed.
2. At least every two years or as required.
, and ScvO2 modules, because the rSO2, modules perform self tests,
2
3.2 Preventative Maintenance Procedures
3.2.1 Visual Inspection
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, display screen, buttons, knobs, and handle for obvious signs of damage.
Inspect the SMR and parameter modules for obvious signs of damage.
Inspect the power cord, bracket and module accessories for obvious signs of 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 safety labels and data plates on the equipment are clearly legible.
BeneVision N22/BeneVision N19 Patient Monitor Service Manual 3-3
3.2.2 NIBP Tests
3.2.2.1 Leakage Test
Tools required:
NIBP cuff for adult patient
NIBP hose
Cylinder
Follow this procedure to perform the test:
1. Set Patient Category to Adult.
2. Connect the NIBP cuff to the NIBP connector on the patient monitor.
3. Wrap the cuff around the rigid cylinder as shown below.
Monit
Hose
NIBP connector
4. Select Main Menu → Maintenance → enter the required password → Module → NIBP → NIBP Leakage
Test. The message NIBP Leakage Test is displayed in the NIBP parameter area.
5. The cuff automatically deflates after 20s, which means NIBP leakage test is completed.
6. If no message is displayed in the NIBP parameter area, it indicates that the system has no leak. If the message
NIBP Airway Leak is displayed, it indicates that the system may have a leak. In this case, verify the connections
and make sure that the NIBP cuff, hose, and connectors are not leaking. Then, perform the test again.
You can also perform a manual leakage test:
1. Perform steps 1-4 in the 1.2.2.2 NIBP Accuracy Test section.
2. Raise the pressure in the rigid vessel to 250 mmHg with the squeeze bulb. Then, wait for 5 seconds until the
measured values become stable.
3. Record the current pressure value and meanwhile count time with a timer. Then, record the pressure value after
counting to 60 seconds.
Cylinder
Cuff
4. Compare the two values and make sure the difference is not greater than 6 mmHg.
3-4 BeneVision N22/BeneVision N19 Patient Monitor Service Manual
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