Mindray H-046-011649-00-BeneVision-N1-Service-ManualFDA-3.0 BeneVision N1 Patient Monitor Service Manual

BeneVision N1

Patient Monitor

Service Manual

opyright 2018-2019 Shenzhen Mindray Bio-Medical Electronics Co., Ltd. All rights reserved.

C

Release time: January 2

ision 3.0

Rev

019

BeneVision N1 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 N1 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 N1 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 [phone], ext: 8116 for Technical Support or [phone]

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

[phone]

[phone]

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 N1 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 N1 Patient Monitor Service Manual V

FOR YOUR NOTES

VI BeneVision N1 Patient Monitor Service Manual

Contents

1 Safety ............................................................................................................................................................................... 1-1

1.1 Safety Information ................................................................................................................................................................................................. 1-1

1.1.1 DANGER .......................................................................................................................................................................................................... 1-1

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 Theory of Operation ........................................................................................................................................................ 2-1

2.1 Overview ................................................................................................................................................................................................................... 2-1

2.1.1 Front View ...................................................................................................................................................................................................... 2-1

2.1.2 Left View ......................................................................................................................................................................................................... 2-2

2.1.3 Right View ...................................................................................................................................................................................................... 2-3

2.1.4 Bottom View ................................................................................................................................................................................................. 2-4

2.2 System Composition ............................................................................................................................................................................................ 2-5

2.2.1 Main Unit System Structure .................................................................................................................................................................... 2-6

2.2.2 Modular Rack and Dock System Composition ................................................................................................................................. 2-8

2.2.3 Extended Parameter Module Composition .................................................................................................................................... 2-10

3 Unpacking and Installation ............................................................................................................................................ 3-1

3.1 Unpacking ................................................................................................................................................................................................................ 3-1

3.2 Preparations for Installation............................................................................................................................................................................... 3-1

3.2.1 Installation Site Requirements ............................................................................................................................................................... 3-1

4 Testing and Maintenance ................................................................................................................................................ 4-1

4.1 Introduction ............................................................................................................................................................................................................. 4-1

4.1.1 Test Equipment ............................................................................................................................................................................................ 4-1

4.1.2 Preventative Maintenance ....................................................................................................................................................................... 4-1

4.1.3 Recommended Frequency ...................................................................................................................................................................... 4-2

4.2 Preventative Maintenance Procedures .......................................................................................................................................................... 4-3

4.2.1 Visual Inspection ......................................................................................................................................................................................... 4-3

4.2.2 NIBP Tests ....................................................................................................................................................................................................... 4-3

4.2.3 Sidestream and Microstream CO

4.3 Power-on Test .......................................................................................................................................................................................................... 4-7

4.4 Module Performance Tests ................................................................................................................................................................................. 4-8

4.4.1 ECG Tests ........................................................................................................................................................................................................ 4-8

4.4.2 Resp Test ......................................................................................................................................................................................................... 4-8

4.4.3 SpO

4.4.4 Temp Test ....................................................................................................................................................................................................... 4-9

4.4.5 NIBP Tests ....................................................................................................................................................................................................... 4-9

4.4.6 IBP Test and Calibration ......................................................................................................................................................................... 4-10

4.4.7

Test ........................................................................................................................................................................................................ 4-9

2

Sidestream and Microstream CO2 Modules Tests and Calibration ......................................................................................... 4-11

Modules Tests ............................................................................................................................ 4-5

2

BeneVision N1 Patient Monitor Service Manual 1

.5 Analog Output Test ............................................................................................................................................................................................. 4-12

4

.6 Electrical safety tests .......................................................................................................................................................................................... 4-12

4

.7 Network Print Test ............................................................................................................................................................................................... 4-13

4

.7.1 Equipment Connection and Setup .................................................................................................................................................... 4-13

4

.7.2 Print Function Test .................................................................................................................................................................................... 4-13

4

.8 Battery Check ........................................................................................................................................................................................................ 4-14

4

.8.1 Functionality Test ...................................................................................................................................................................................... 4-14

4

.8.2 Performance Test ...................................................................................................................................................................................... 4-14

4

5 Troubleshooting .............................................................................................................................................................. 5-1

5.1 Overview .................................................................................................................................................................................................................. 5-1

5.2 Part Replacement .................................................................................................................................................................................................. 5-1

5.3 Software Version Check ...................................................................................................................................................................................... 5-1

5.4 Technical Alarm Check ......................................................................................................................................................................................... 5-2

5.5 Troubleshooting Guide ....................................................................................................................................................................................... 5-2

5.5.1 Power-On/Off Failures............................................................................................................................................................................... 5-2

5.5.2 Display Failures ............................................................................................................................................................................................ 5-3

5.5.3 Alarm Failures............................................................................................................................................................................................... 5-3

5.5.4 Dock or Modular Rack Failures .............................................................................................................................................................. 5-3

5.5.5 Operation Failures ...................................................................................................................................................................................... 5-4

5.5.6 Storage Failures ........................................................................................................................................................................................... 5-4

5.5.7 Power Supply Failures ............................................................................................................................................................................... 5-5

5.5.8 Wi-Fi Failures ................................................................................................................................................................................................. 5-6

5.5.9 Wired Network Failures ............................................................................................................................................................................. 5-6

5.5.10 Software Upgrade Failures ................................................................................................................................................................... 5-7

6 Repair and Disassembly .................................................................................................................................................. 6-1

6.1 Tools ........................................................................................................................................................................................................................... 6-1

6.2 Preparations for Disassembly............................................................................................................................................................................ 6-1

6.3 Disassembling the N1 Main Unit with the CO

Module .......................................................................................................................... 6-2

2

6.3.1 Removing the Battery Door and Battery ............................................................................................................................................ 6-2

6.3.2 Installing the Battery and Battery Door .............................................................................................................................................. 6-3

6.3.3 Removing the Display Assembly .......................................................................................................................................................... 6-4

6.3.4 Removing the Rear Housing ................................................................................................................................................................... 6-5

6.3.5 Removing the Infrared Backboard ....................................................................................................................................................... 6-7

6.3.6 Removing the Main Board ....................................................................................................................................................................... 6-7

6.3.7 Removing the Parameter Board .......................................................................................................................................................... 6-10

6.3.8 Removing the NIBP Gas Circuit and NIBP Valve ............................................................................................................................. 6-12

6.3.9 Removing the NIBP Pump ..................................................................................................................................................................... 6-13

6.3.10 Removing the CO

6.3.11 Removing the CO

Module ................................................................................................................................................................. 6-15

2

Module Assembly............................................................................................................................................. 6-16

2

6.3.12 Removing the Interface Board .......................................................................................................................................................... 6-17

6.4 Disassembling the N1 Main Unit with Two Batteries ............................................................................................................................. 6-18

6.4.1 Removing the Battery Door and Battery .......................................................................................................................................... 6-18

6.4.2 Installing the Battery and Battery Door ............................................................................................................................................ 6-20

6.4.3 Removing the Display Assembly ........................................................................................................................................................ 6-21

2 BeneVision N1 Patient Monitor Service Manual

7.7.2 Parts List ....................................................................................................................................................................................................... 7-11

7.8 Modular Rack ........................................................................................................................................................................................................ 7-12

7.8.1 Exploded View ........................................................................................................................................................................................... 7-12

7.8.2 Parts List ....................................................................................................................................................................................................... 7-13

7.9 Dock ......................................................................................................................................................................................................................... 7-14

7.9.1 Main Unit ..................................................................................................................................................................................................... 7-14

7.9.2 Top Shell Module of Dock ...................................................................................................................................................................... 7-16

7.9.3 Right Shell Module of Dock .................................................................................................................................................................. 7-17

7.9.4 Dock Port Module ..................................................................................................................................................................................... 7-18

7.10 Other Maintenance and Repair Parts ........................................................................................................................................................ 7-19

8 Terminology ..................................................................................................................................................................... 8-1

A Electrical Safety Inspection ............................................................................................................................................ A-1

4 BeneVision N1 Patient Monitor Service Manual

6.4.4 Removing the Rear Housing ................................................................................................................................................................ 6-23

6.4.5 Removing the Infrared Backboard..................................................................................................................................................... 6-24

6.4.6 Removing the Main Board .................................................................................................................................................................... 6-25

6.4.7 Removing the Parameter Board ......................................................................................................................................................... 6-27

6.4.8 Removing the NIBP Gas Circuit and Secondary Battery housing ........................................................................................... 6-29

6.4.9 Removing the NIBP Pump and Valve ................................................................................................................................................ 6-30

6.4.10 Removing the Interface Board .......................................................................................................................................................... 6-31

6.5 Removing the N1 Dock ..................................................................................................................................................................................... 6-32

6.5.1 Removing the Bottom Housing .......................................................................................................................................................... 6-32

6.5.2 Removing the Right Shell Assembly ................................................................................................................................................. 6-32

6.5.3 Removing the Rotatable Plate ............................................................................................................................................................ 6-33

6.5.4 Removing the Transition Board .......................................................................................................................................................... 6-33

6.5.5 Removing the Port Module .................................................................................................................................................................. 6-34

6.5.6 Removing the Interface Board and Power Board ......................................................................................................................... 6-35

6.5.7 Removing the LED Indicator ................................................................................................................................................................ 6-36

6.6 Removing the N1 Modular Rack ................................................................................................................................................................... 6-36

6.6.1 Removing the Rear Housing ................................................................................................................................................................ 6-36

6.6.2 Removing the Unlock Rod .................................................................................................................................................................... 6-37

6.6.3 Removing the Infrared Backboard..................................................................................................................................................... 6-37

6.6.4 Removing the Transition Board .......................................................................................................................................................... 6-38

6.6.5 Removing the Contact Screws ............................................................................................................................................................ 6-38

6.7 Removing N1 Transport Dock ........................................................................................................................................................................ 6-39

6.7.1 Removing the Transition Board .......................................................................................................................................................... 6-39

6.7.2 Removing the Power Adapter ............................................................................................................................................................. 6-39

7 Parts ................................................................................................................................................................................. 7-1

7.1 Introduction ............................................................................................................................................................................................................. 7-1

7.2 Main Unit .................................................................................................................................................................................................................. 7-2

7.2.1 Exploded View .............................................................................................................................................................................................. 7-2

7.2.2 Parts List ......................................................................................................................................................................................................... 7-2

7.3 Display assembly ................................................................................................................................................................................................... 7-3

7.3.1 Exploded View .............................................................................................................................................................................................. 7-3

7.3.2 Parts List ......................................................................................................................................................................................................... 7-3

7.4 Rear Housing Assembly ....................................................................................................................................................................................... 7-4

7.4.1 Exploded View .............................................................................................................................................................................................. 7-4

7.4.2 Parts List ......................................................................................................................................................................................................... 7-4

7.5 Main Unit Assembly .............................................................................................................................................................................................. 7-5

7.5.1 Exploded View (for CO2 Module Configuraiton) ............................................................................................................................. 7-5

7.5.2 Parts List ......................................................................................................................................................................................................... 7-5

7.5.3 Exploded View (for 2-battery Configuration) .................................................................................................................................... 7-7

7.5.4 Parts List ......................................................................................................................................................................................................... 7-7

7.6 Parameter Interface Board Assembly ............................................................................................................................................................. 7-9

7.6.1 Exploded View (with the CO

module) ................................................................................................................................................ 7-9

2

7.6.2 Parts List ...................................................................................................................................................................................................... 7-10

7.7 Parameter Assembly .......................................................................................................................................................................................... 7-11

7.7.1 Exploded View ........................................................................................................................................................................................... 7-11

BeneVision N1 Patient Monitor Service Manual 3

1 Safety

1.1 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, 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.

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.

BeneVision N1 Patient Monitor Service Manual 1-1

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 N1 Patient Monitor Operator’s Manual for information about the symbols used on this product and its

packaging.

1-2 BeneVision N1 Patient Monitor Service Manual

2 Theory of Operation

2.1 Overview

This monitor is

physiological parameters, including electrocardiogram (ECG), respiration (RESP), temperature (TEMP), pulse oxygen

saturation (SpO2), pulse rate (PR), non-invasive blood pressure (NIBP), invasive blood pressure (IBP), carbon dioxide

(CO2), and oxygen (O2).

The monitor is to be used in healthcare facilities. It can also be used during patient transport with road, rotary, and

fixed-wing ambulances.

intended for monitoring, displaying, reviewing, storing, alarming, and transferring of patients'

2.1.1 Front View

1. Alarm lamp

When a physiological alarm or technical alarm occurs, this lamp lights and flashes corresponding with the alarm priority:

 High priority alarms: the lamp quickly flashes red.

 Medium priority alarms: the lamp slowly flashes yellow.

 Low priority alarms: the lamp lights in cyan without flashing.

2. Ambient light sensor

When screen brightness is set to auto, the system automatically adjusts screen brightness according to the strength of

ambient light.

3. Display and touchscreen

4. Battery LED

 Yellow: the battery is being charged.

 Green: the battery is fully charged.

 Flashing green: the monitor runs on battery power.

 Flashing yellow: the battery is malfunctioning.

eneVision N1 Patient Monitor Service Manual 2-1

B

 Off: no battery is installed, or the monitor is powered off and no external power is connected.

5. External power supply indicator

 On: when external power supply is connected.

 Off: when external power supply is not connected.

2.1.2 Left View

1. Communication interface: used for communication between the N1 and host monitor (BeneVision N series

monitor)

2. Infrared filter: used for communication between the N1 and Passport m series monitor; used for communication

between the N1 and N series monitor if the communication interface does not work.

3. Contact: used for receiving power supply from the host monitor (Passport m series monitor or BeneVision N series

monitor).

4. Multi-pin connector: connects N1 to the Modular Rack or Dock.

5. External DC power input connector: connects the N1 to the AC adapter.

NOTE

 To ensure good contact, clean the contacts regularly, as dust and dirt may collect on them. When cleaning

the contacts, wipe them with cotton, dampened with alcohol. Using forceps is recommended.

 In the case of water spray, dry the Multi-pin connector of the N1 before connecting the N1 to the Modular

Rack or Dock.

-2 BeneVision N1 Patient Monitor Service Manual

2

2.1.3 Right View

1. Power

switch

2. Sample line connector for sidestream CO2 (available when CO2 is configured)

3. Gas outlet (available when CO2 is configured)

4. ECG cable connector

5. SpO

sensor connector

2

6. NIBP cuff connector

7. Multifunctional connector: outputting analog and defib. synchronization signals

8. Speaker

9. IBP cable connector

10. Temperature probe connector

eneVision N1 Patient Monitor Service Manual 2-3

B

2.1.4 Bottom View

1

. Clip: fastens N1 when N1 is in use with the host monitor, Dock or Modular Rack.

2. Latch: locks N1 when N1 is in use with the host monitor, Dock or Modular Rack. Pressing here releases the N1 so

that the N1 can be removed from the host monitor, Dock or Modular Rack.

3. Battery door: secures the battery.

-4 BeneVision N1 Patient Monitor Service Manual

2

2.2 System Composition

The N1 monitor system consists of the N1 main unit, Dock, Modular Rack, single-slot module, external display, AC

adapter, Transport Dock and the peripherals such as keyboard, mouse, scanner, and printer, as shown in the figure

below:

In the figure:

 N1 main unit: incor

porates multiple functions such as display, control, parameter measurement, printing, and

communication. It is the core of the whole system and supports the following functions:

 Integrate the basic parameter measurement module for measuring the ECG, RESP, SpO

, TEMP, NIBP, IBP,

2

CO2 and other parameters.

 Connect to the Modular Rack, and to the parameter measurement modules such as the three kinds of

CO2 modules through the Modular Rack, so as to display and store module measurement results and

report alarms.

 Be directly inserted into the host monitor as a submodule.

 Output analog (ECG and IBP) and defib. synchronization signals.

 Be powered using the DC and smart battery.

eneVision N1 Patient Monitor Service Manual 2-5

B

 Support Wi-Fi wireless communication.

 Support alarm sound and light output.

 Connect to the Dock to extend display, USB, LAN, host monitor communication, and power supply

interfaces.

 AC adapter: provides an external power supply to the N1 main unit used separately.

 Dock: secured beside the bed and connected to the N1 main unit. It can supply power to the N1 and charge

the N1 battery. It can be connected to a touchscreen, mouse, keyboard, barcode scanner, USB drive, external

host monitor, and wired network.

 Modular Rack: enables N1 to connect to the mainstream CO

, sidestream CO2, microstream CO2 and PiCCO

2

modules.

 Transport Dock: secures N1 in airplanes and ambulances and supplies power to N1.

2.2.1 Main Unit System Structure

The figure below shows the system structure of the N1 main unit. One should be selected from the battery B and CO2

related components.

In the figure:

 Battery B exists only in the N1 main unit (without CO

 The CO

module and its interface exist only in the N1 main unit (with CO2).

2

 The Wi-Fi module is optional.

 There are three kinds of SpO2 boards.

).

2

-6 BeneVision N1 Patient Monitor Service Manual

2

2.2.1.1 Main Board

The main board is the control core of the entire system. Its main functions are as follows:

 display driver and backlight control
 touchscreen driver
 external display VGA drive
 audio driver
 integrating the alarm lamp
 integrating the light sensor
 wired network communication
 wireless network communication (through the Wi-Fi module)
 USB driver
 real-time clock
 data and configuration storage
 DC/DC conversion and power switching
 power management (power-on/off, status monitoring, etc.)
 battery management (in-position detection, charge control, discharge control, status monitoring, etc.)
 integrating the external power LED and battery LED
 analog and defib. synchronization signals transfer
 communication with the Dock
 communication with the Modular Rack
 communication with the host monitor
 communication with the infrared communication board
 communication with the multi-parameter board
 communication with the CO

module

2

2.2.1.2 Multi-parameter Board

This board completes the basic parameter measurement functions, including:

 ECG and Resp parameter measurement
 SpO
 NIBP parameter measurement

parameter measurement (in the backboard mode, supporting Mindray, Masimo, and Nellcor SpO2)

2

 2-channel TEMP parameter measurement
 2-channel IBP parameter measurement
 isolation of parameters except NIBP from the ground
 isolation of ECG from other parameters
 direct output of analog signals (1-channel ECG and 2-channel IBP)
 direct output of defib. synchronization signals
 data interaction with the main board through the serial port

BeneVision N1 Patient Monitor Service Manual 2-7

2.2.1.3 CO

This module completes the CO2 parameter measurement function.

Module

2

2.2.1.4 Parameter Interface Board

This board provides the following functions:

 ECG signal transfer and isolation of ECG signals from other signals

 SpO2 signal transfer

 TEMP signal transfer

 IBP signal transfer

2.2.1.5 Multifunctional Connector Board

This board outputs analog signals and transfers defib. synchronization signals.

2.2.1.6 Switch Keypad Board

This board provides the power switch and power LED.

2.2.1.7 Infrared Backboard

The infrared backboard is used for infrared/contact communication between N1 and the host monitor. It receives power

supply from the host monitor and connects the multi-parameter board to the main board.

2.2.2 Modular Rack and Dock System Composition

8 BeneVision N1 Patient Monitor Service Manual

2-

The above figure shows the connection and system composition relationships between the N1, Modular Rack, and Dock.

The three can be interconnected through the pluggable 54-pin connector. N1 functions as the system core. The Modular

Rack and Dock expand the functions of N1.

When N1 is separately connected to the Modular Rack, the N main unit can communicate with the parameter module.

N1 can implement power supply and measurement parameter interaction with the parameter module through the Rack

adapter board and Rack NIOS board. The parameter module is a one-slot parameter module.

When N1 is in use with the Dock, it can be connected to the Do

board. In this way, the Dock interface board supplies power to N1. N1 connects the USB, external device connector (Mini

DB15), VGA and wired network port to the Dock response interface to implement external interface connection and

extension.

When N1, the Modular Rack, and the Dock form a whole, functions of the above two combinations are implemented at

the same time.

ck interface power board through the Dock adapter

eneVision N1 Patient Monitor Service Manual 2-9

B

2.2.3 Extended Parameter Module Composition

N1 can be connected to the following four external modules through the Modular Rack:

Sidestream CO2

module

Microstream

CO

module

2

The figure below shows parameter module expansion through the Modular Rack:

Rack

NIOS

board

Rack

adapter

board

Seri al por t

54 pins

Three kinds of extension modules

Pluggable connector

CO

2

N1 main unit

In this application, N1 and the external module are inserted into the specified slots of the Modular Rack. The external

module is connected to the Rack adapter board through the Rack NIOS board in the Modular Rack. The battery in the N1

main unit powers the parameter module. The Rack adapter board and N1 main unit are connected through the 54-pin

pluggable connector. The Modular Rack can also be inserted into the Dock so that the Dock can supply power to it.

10 BeneVision N1 Patient Monitor Service Manual

2-

3 Unpacking and Installation

3.1 Unpacking

Open the package and take out the packing list. Check that all the articles included on the packing list are available and

the quantity and specification are correct. Note that:

1. All the optional parts purchased by the customer shall also be checked.

2. Immediately contact the supplier if any item in the package is inconsistent with that listed on the packing list.

3. In case of damage during transportation, keep the packing material and immediately contact the supplier.

4. Keep the packing material until the product acceptance is completed.

3.2 Preparations for Installation

3.2.1 Installation Site Requirements

1. Ensure that the installation site meets all safety, environmental and power requirements.

2. Check that required power sockets are available.

3. Check whether a network connector is available if the monitor needs to connect to the wired network.

WARNING

 When using the N1 Dock, use only the power cord supplied by the manufacturer to connect the AC power

supply. When using the monitor alone, use only the DC adapter supplied by the manufacturer to connect

the external power supply.

eneVision N1 Patient Monitor Service Manual 3-1

B

3.2.1.1 Environmental Requirements

To avoid explosion hazard, do not use the equipment in the presence of flammable anesthetics, vapors or liquids. To

avoid impact on the normal operation, the monitor shall be placed in an environment free from vibration, dust and

corrosive substances.

Environmental specifications are as follows:

Main unit, adapter, and Transport Dock

Item Temperature (°C) Relative Humidity (Non-condensing) Atmospheric Pressure (kPa)

Work ing

environment

Storage and

transport

environment

Microstream CO2 module

Item Temperature (°C) Relative Humidity (Non-condensing) Atmospheric Pressure (kPa)

Work ing

environment

Storage and

transport

environment

0~40 5%~95% 57.0~107.4

–30~70 5%~95% 16.0–107.4 (without the CO

50.0–107.4 (with the CO

0~40 15%~95% 57.3~105.3

–20~60 10%~95% 57.3~105.3

module)

2

module)

2

Sidestream CO2 module

Item Temperature (°C) Relative Humidity (Non-condensing) Atmospheric Pressure (kPa)

Work ing

5~40 15%~95% 57.3~105.3

environment

Storage and

–20~60 10%~95% 57.0~107.4

transport

environment

N1 Dock and N1 Modular Rack

Item Temperature (°C) Relative Humidity (Non-condensing) Atmospheric Pressure (kPa)

Work ing

0~40 15%~95% 57.0~107.4

environment

Storage and

–20~60 10%~95% 16.0~107.4

transport

environment

NOTE

 Unless otherwise specified, the environmental specifications of a parameter module are the same as those

of the main unit.

-2 BeneVision N1 Patient Monitor Service Manual

3

3.2.1.2 Electrical Requirements

The monitor can be powered by an AC power supply through the N1 Dock, or it can be directly connected to an external

power supply using an adapter. The power cord must be connected only to a power socket with protective grounding.

Make sure that:

1. All cables and connectors are not damaged, and pins are not loose.

2. Patient cables and leadwires are properly insulated, and connectors are not loose.

The power input specifications of the adapter and Transport Dock are as follows:

00-240V~(15%, +10%)

Input voltage

Input current

Frequency

1

FSP030-RCAM-G: 1.0 ~ 0.6 A

50 Hz/60 Hz(±3Hz)

The AC po

Input voltage

Input current

Frequency

wer input specifications of the N1 Dock are as follows:

0-240V~(±10%)

10

65A ~0.35A

0.

0 Hz/60 Hz (±3Hz)

5

3.2.1.3 Turning on the Monitor

1. Check the monitor for any mechanical damage. Make sure that all external cables and accessories are properly

connected.

2. For the first use, connect the monitor to the external power supply (AC adapter, Dock, powered-on host monitor, or

Transport Dock) for a while and then turn on the monitor to activate the battery.

3. When using the monitor alone, connect the monitor and the DC adapter. If you run the patient monitor on battery

power, ensure that the battery is sufficiently charged. If the monitor is powered using the N1 Dock, check that the

power LED on the Dock is on.

4. Press the power switch to turn on the monitor.

neVision N1 Patient Monitor Service Manual 3-3

Be

FOR YOUR NOT

ES

-4 BeneVision N1 Patient Monitor Service Manual

3

4 Testing and Maintenance

4.1 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.

4.1.1 Test Equipment

Required Test Equipment is listed in the specific test procedure.

4.1.2 Preventative Maintenance

It is recommended to verify accuracy and calibrate the patient monitor as needed at least once every two years (once a

year for CO

following sections.

 Visual inspection

modules). Preventative maintenance involves the following test items. For detailed procedures, refer to the

2

 NIBP tests and calibration
 CO

BeneVision N1 Patient Monitor Service Manual 4-1

module tests and calibration

2

4.1.3 Recommended Frequency

Check/Maintenance Item Frequency

Visual inspection 1. When the monitor is installed for the first time or is reinstalled.

Power-on test 1. When the monitor is installed for the first time or is reinstalled.

2. Following any repair or parts replacement.

EGG test and

calibration

Resp test

SpO2 test

Performance test 1. When the user suspects that the measurement is incorrect.

Module calibration

2. Following any repair or replacement of the relevant module.

3. At least once every two years.

Note: Perform CO

module tests at least once a year.

2

NIBP tests and

calibration

NIBP accuracy test

NIBP leakage test

Temp test

IBP test and calibration Performance test

Pressure calibration

Sidestream and

microstream CO

2

modules tests and

Leakage test

Performance test

Module calibration

calibration

Analog output test When the user suspects that the analog output does not function

properly.

Electrical safety tests Enclosure leakage

current test

Earth leakage test

1. Following any repair or replacement of the power module.

2. When the monitor is dropped.

3. At least twice a year or as required.

Patient leakage current

Patient auxiliary current

Battery check Functionality test 1. When the monitor is installed for the first time.

2. After the battery is replaced.

Performance test Once a year or when the battery runtime reduces significantly.

4-2 BeneVision N1 Patient Monitor Service Manual

4.2 Preventative Maintenance Procedures

4.2.1 Visual Inspection

Inspect the monitor for obvious damage. The test is passed if the monitor has no obvious damage. Follow these

guidelines when inspecting the monitor:

 Carefully inspect the enclosure, display, buttons, and knob for obvious damage.
 Inspect the power cord and module accessories for obvious damage.
 Inspect all external connections for loose connectors, bent pins or frayed cables.
 Inspect all connectors on the monitor for loose connectors or bent pins.
 Make sure that safety labels and data plates on the monitor are clearly legible.

4.2.2 NIBP Tests

4.2.2.1 NIBP Leakage Test

NOTE

 You should perform the NIBP leakage test before any other NIBP concerned test and calibration.

Tools required:

 NIBP cuff for adult patient
 Air hose
 Cylinder

Follow this procedure to perform the test:

1. Set

2. Connect the NIBP cuff to the NIBP connector on the monitor.

3. Wrap the cuff around the cylinder as shown below.

Patient Category to Adult.

Monitor

Hose

Cylinder

Cuff

NIBP cuff connector

4. Select

After about 20s, the cuff automatically deflates, which indicates that the NIBP leakage test is completed. If no message is

displayed in the NIBP parameter area, it indicates that the system has no leakage. If the message "

displayed, it indicates that the system may have a leakage. In this case, check that all connections are in good condition

and the cuff and air tubing have no leakage. Then perform the test again.

Main Menu→System→Maintenance >>→Module→NIBP→NIBP Leakage Test. The message

Leakage Testing…" is displayed in the NIBP parameter area.

"

NIBP Airway Leak" is

BeneVision N1 Patient Monitor Service Manual 4-3

You can also perform a manual leakage test:

Balloon pump

1. Perform steps 1-4 in section 1.2.2.2 NIBP Accuracy Test.

2. Raise the pressure in the rigid vessel to 250 mmHg using the balloon pump. Then wait for 5 seconds so that the

measured values become stable.

3. Record the current pressure value, and use a timer to count time. Then record the pressure value after 60 seconds.

4. Compare the two pressure values and make sure that the difference is not greater than 6 mmHg.

4.2.2.2 NIBP Accuracy Test

Tools required:

 T-shape connector
 NIBP hose
 Balloon pump
 Rigid vessel with 500±25 ml internal volume
 Standard manometer (calibrated with accuracy greater than or equal to 1 mmHg)

Follow this procedure to perform the test:

1. Connect the monitor and the test tools as shown below.

Monitor

NIBP hose

NIBP cuff connector

2. Before inflation, check whether the reading on the manometer is 0. If not, open the valve of the balloon pump to let

the whole airway open to the atmosphere. Close the valve after the reading becomes 0.

3. Select

4. Check that the reading of the manometer and that of the monitor are both 0 mmHg.

5. Raise the pressure in the rigid vessel to 50 mmHg using the balloon pump. Then wait for 10 seconds so that the

Main Menu→Maintenance → enter the required password → Module → NIBP →NIBP Accuracy Test.

measured values become stable.

Standard manometer

Rigid vessel

6. Check that the difference between the reading of the manometer and that of the monitor is less than or equal to 3

mmHg or less. If the difference is greater than 3 mmHg, contact Mindray service.

7. Raise the pressure in the rigid vessel to 200 mmHg using the balloon pump. Then wait for 10 seconds so that the

measured values become stable. Then repeat step 6.

NOTE

 You can use an NIBP simulator to replace the balloon pump and the standard manometer.
 You can use an appropriate cylinder and a cuff instead of the rigid vessel.

4-4 BeneVision N1 Patient Monitor Service Manual

4.2.3 Sidestream and Microstream CO

Modules Tests

2

4.2.3.1 Leakage Test

1. Connect the module and the monitor.

2. Wait until CO2 warmup is finished and then completely block the gas inlet of the module or water trap (by using

your finger or a pinched sample line). The sidestream and microstream CO

 Sidestream: After 3 seconds, the alarm message "CO

Airway Occluded" is displayed on the screen. Block

2

modules will behave as follows:

2

the gas inlet for another 60 seconds. Select Main Menu →Maintenance → enter the required password →

Module → CO

to check that the current CO2 flow rate is less than 10 ml/min. If the alarm message remains

2

on the screen, it indicates that the module does not leak. If the alarm message CO2 Airway Occluded

disappears, or the flow rate is greater than or equal to 10 ml/min, it indicates that the module leaks.

 Microstream: After 3 seconds, the alarm message "CO

inlet for another 30 seconds. If the alarm message "

Purging" is displayed on the screen. Block the gas

2

CO2 Airway Occluded" is displayed, it indicates that the

module does not leak.

4.2.3.2 Accuracy Test

Tools required:

 For microstream CO

module and sidestream CO2 module without O2 module, a gas cylinder with 5±0.03% CO2,

2

21.0% O2 and balance gas N2 (P/N 0075-00-0033-01) or a steel gas cylinder with:

 CO2 concentration 3% - 7%
 a/c ≤ 0.01 (where a = absolute gas concentration accuracy, c = gas concentration)
 balance gas N2

 For sidestream CO

module with O2 module equipped, a steel gas cylinder (P/N 0075-00-0048-01) with 6% CO2, 4%

2

Desflurane, 45% N2O, and 45% O2,

 T-shape connector
 Air tubing
 Flowmeter

1. Connect the module and the monitor.

2. Wait until the CO

module warmup finishes. Check the airway for leakage and perform a leakage test as well to

2

make sure that the airway has no leakage.

3. Select Main Menu →Maintenance → enter the required password → Module → CO2.

4. Connect the test system as follows:

BeneVision N1 Patient Monitor Service Manual 4-5

Relief
valve

T-shape connector

Gas
cylinder

Tubing

Monitor

Flowmeter

5. Open the relief valve and adjust it until the flowmeter has a stable reading between 10 ml/min and 50 ml/min.

6. Check that the real-time CO

value is within 6.0±0.2% in the CO2 Maintenance menu (for microstream CO2, the

2

value is 45±2 mmHg).

7. Replace the cylinder to the steel gas cylinder with >40% O

module with O

(80%≤O

module equipped) and verify that the real-time O2 value error is within ±2% (when O2≤80%) or ±3%

2

≤100%).

2

4.2.3.3 Calibration

Tools required:

 For microstream CO

21.0% O2 and balance gas N2 (P/N 0075-00-0033-01) or a steel gas cylinder with:

 CO2 concentration 3% - 7%
 a/c ≤ 0.01 (where a = absolute gas concentration accuracy, c = gas concentration)
 balance gas N2

 For sidestream CO

Desflurane, 45% N2O, and 45% O2,

 T-shape connector

module and sidestream CO2 module without O2 module, a gas cylinder with 5±0.03% CO2,

2

module with O2 module equipped, a steel gas cylinder (P/N: 0075-00-0048-01) with 6% CO2, 4%

2

and balance gas N2 (applicable to sidestream CO2

2

 Air tubing
 Flowmeter

1. Make sure that the sidestream or microstream CO2 module has been warmed up or started up.

2. Check the airway for leakage and perform a leakage test as well to make sure that the airway has no leakage.

3. Select Main Menu→Maintenance → enter the required password →Module→CO2.

4. In the Calibrate Maintenance menu, select Zero.

5. After the zero calibration succeeds, connect the monitor and the test tools as follows:

4-6 BeneVision N1 Patient Monitor Service Manual

Flowmeter

Relief valve

T-shape connector

Gas cylinder

6. Open the relief valve and adjust it until the flowmeter has a stable reading between 10 ml/min and 50 ml/min.

7. In the CO2 Maintenance menu, select 6% (the CO2 concentration) for CO2 calibration.

8. After the measured CO

9. Replace the cylinder to the steel gas cylinder with >40% O2 and balance gas N2(applicable to sidestream CO2

module with O2 module equipped) and calibrate O2.

If the calibration succeeds, the message "

calibration fails, the message "

and perform another calibration. If the calibration fails several times, return the module to Mindray for repair.

concentration becomes stable, select Calibrate to calibrate the CO2 module.

2

Calibration Completed!" is displayed in the Calibrate menu. If the

Calibration Failed!" is displayed. In this case, check whether the operations are correct

Tubing

Monitor

4.3 Power-on Test

This test aims to verify that the monitor can power up properly.

When the monitor is powered only by the battery, follow this procedure:

1. Install the battery on the monitor.

2. Press the power switch to turn on the monitor. The battery LED flashes.

When the monitor is powered by using the adapter, follow this procedure:

1. Install the battery on the monitor. Connect the monitor and the adapter. Then connect the adapter and the AC

power supply. In this case, the external power LED and the battery LED are on.

2. Press the power switch to turn on the monitor.

When the monitor is in use with the Dock, follow this procedure:

1. Install the battery on the monitor. Install the monitor on the Dock. Then connect the Dock and the AC power supply.

In this case, the power LED on the Dock and the battery LED on the monitor are on.

2. Press the power switch to turn on the monitor.

The monitor automatically performs a self-test upon startup. During the self-test, you can hear the alarm tone, and the

BeneVision N1 Patient Monitor Service Manual 4-7

alarm lamp glows yellow and red. This indicates that the visible and audible alarm indicators operate properly.

4.4 Module Performance Tests

4.4.1 ECG Tests

4.4.1.1 ECG Performance Test

Tools required: Medsim300B patient simulator or other equivalent simulator

1. Connect the patient simulator with the ECG module using an ECG cable.

2. Set the patient simulator as follows: ECG sinus rhythm, HR = 80 bpm, and amplitude = 1 mV.

3. Verify that the ECG waves are displayed correctly without noise and the displayed HR value is within 80±1 bpm.

4. Disconnect each of the leads in turn and observe the corresponding lead off message displayed on the screen.

5. Set the output of the simulator to deliver a paced signal, and set

pulse marks on the monitor screen.

Paced to Yes on the monitor. Check the pace

4.4.1.2 ECG Verification

Test tool: vernier caliper

1. Select the ECG parameter window or waveform area →Filter→Diagnostic.

2. Select

3. Select

4. Compare the amplitude of the square wave with that of the scale. The difference should be less than 5%.

5. After completing the calibration, select

If necessary, you can print out the square wave and wave scale through the recorder and then measure the difference.

Main Menu →Maintenance → enter the required password → Module.

Calibration. A square wave appears on the screen and the message "ECG Calibrating" is displayed.

Stop Calibration.

4.4.2 Resp Test

Tools required:

 Medsim300B patient simulator or other equivalent simulator

1. Connect the patient simulator and the monitor using a non ESU-proof cable and set lead II as the respiration lead of

the monitor.

2. Configure the simulator as follows: lead II as the respiration lead, base impedance line as 500 Ω; delta impedance as

1 Ω, respiration rate as 20 rpm.

3. Verify that the Resp wave is displayed without any distortion and the displayed Resp value is within 20±1 rpm.

4-8 BeneVision N1 Patient Monitor Service Manual

NOTE

4.4.3 SpO

Test

2

Tools required: None

1. Connect the SpO2 sensor to the SpO2 connector on the monitor. Set Patient Category to Adult and PR Source to

SpO2 on the monitor.

2. Apply the SpO

sensor to the ring finger of a healthy person.

2

3. Check the Pleth wave and PR reading on the screen and make sure that the displayed SpO2 is within 95% and100%.

4. Remove the SpO2 sensor from your finger and check that the SpO2 sensor off alarm is triggered.

The SpO

accuracy has been verified in human experiments by comparing with the arterial blood sample reference

2

measured by a CO-oximeter. Pulse oximeter measurements are statistically distributed and about two-thirds of the

measurements are expected to fall within the specified accuracy range compared to CO-oximeter measurements.

 A simulator cannot be used to assess the accuracy of a pulse oximeter monitor or a SpO

sensor. Instead, it

2

can only verify that whether the monitor is functional. The accuracy of a pulse oximeter monitor or a SpO

sensor needs to be verified by clinical data.

4.4.4 Temp Test

2

Tools required: Resistance box (with accuracy greater than or equal to 0.1 Ω)

1. Connect the two pins of any Temp connector of a module to the two ends of the resistance box using two wires.

2. Set the resistance box to 1354.9 Ω (the corresponding temperature is 37°C).

3. Verify that the displayed value is within 37±0.1°C.

4. Repeat steps 1 to 3 to verify each Temp channel of the monitor.

4.4.5 NIBP Tests

Refer to section 4.2.2 NIBP Tests.

BeneVision N1 Patient Monitor Service Manual 4-9

4.4.6 IBP Test and Calibration

4.4.6.1 Performance Test

Tools required:

 Patient simulator Medsim300B, MPS450, or equivalent equipment
 IBP adapter cable for test (P/N 009-002199-00 for Medsim300B; P/N 009-002198-00 for MPS450)

1. Connect the patient simulator to the IBP connector on the monitor.

2. Set the patient simulator to output 0 mmHg to an IBP channel.

3. Press the Zero key from the IBP Setup menu to perform a zero calibration.

4. Set static pressure to 200 mmHg on the patient simulator.

5. Check that the value displayed on the monitor is within 200±2 mmHg.

6. If the error is beyond ±2 mmHg, calibrate the IBP module. If the IBP module was calibrated with a dedicated

reusable IBP sensor, check the calibration together with this IBP sensor.

7. Set the patient simulator to separately output 120/80 mmHg ART signals and 120/0 mmHg LV signals to the IBP

channel and check that the IBP wave is displayed correctly.

8. Repeat the preceding steps to test all IBP channels.

4.4.6.2 Pressure Calibration

Method 1:

Tools required:

 Patient simulator Medsim300B, MPS450, or equivalent equipment
 IBP adapter cable for test (P/N 009-002199-00 for Medsim300B; P/N 009-002198-00 for MPS450)

1. Connect the patient simulator to the IBP connector on the monitor.

2. Set the patient simulator to 0 pressure for the target IBP channel.

3. Press the Zero key from the IBP Setup menu to perform a zero calibration.

4. Set static pressure to 200 mmHg on the patient simulator.

5. Select Main Menu → Maintenance → enter the required password → Module → IBP. Set the calibration

value to 200 mmHg.

6. Select the

If the calibration succeeds, the message "Calibration Completed!" is displayed. If the calibration fails, a corresponding

message is displayed.

Calibrate button next to the target IBP channel to start calibration.

4-10 BeneVision N1 Patient Monitor Service Manual

T-shape

Pressure sensor

Pressure adapter cable

Method 2:

Tools required:

 Standard manometer
 Balloon pump
 Air tubing
 T-shape connector

1. Connect the 3-way stopcock, the sphygmomanometer and the balloon pump using the T-shape connector, as

shown below.

2. Turn on the 3-way stopcock to the air to zero the transducer. Then open the stopcock to the sphygmomanometer.

3-way stopcock

connector

Sphygmomanometer

3. Select Main Menu→Maintenance Maintenance → enter the required password →Module → IBP. In the

displayed interface, set the target calibration value of the target channel. Value range: 80 to 300 mmHg.

4. Use the balloon pump to inflate until the reading of the sphygmomanometer approximates to the preset

calibration value.

5. Adjust the calibration value in the IBP Maintenance menu until it is equal to the reading of sphygmomanometer.

6. Select the

If the calibration succeeds, the message "

message is displayed.

4.4.7 Sidestream and Microstream CO

Refer to section4.2.3 Sidestream and Microstream CO2 Modules Tests.

Calibrate button next to the target IBP channel to start calibration.

Calibration Completed!" is displayed. If the calibration fails, a corresponding

2

Modules Tests and Calibration

IBP module

BeneVision N1 Patient Monitor Service Manual 4-11

4.5 Analog Output Test

Tools required:

 Patient simulator Medsim300B, MPS450, or equivalent equipment
 Oscilloscope

1. Connect the patient simulator to the monitor using an ECG or IBP cable.

2. Connect the oscilloscope to the Auxiliary Output Connector on the monitor.

3. Verify that the waves displayed on the oscilloscope are identical with those displayed on the monitor.

4.6 Electrical safety tests

WARNING

 Electrical safety tests are a proven means of detecting abnormalities that, if undetected, could prove

dangerous to either the patient or the operator.

 All tests can be performed using commercially available safety analyzer test equipment. Maintenance

personnel shall ensure the adaptability, functional completeness and safety of these pieces of test

equipment, and be familiar with their usage.

 Electrical safety tests shall comply with the following standards: IEC 60601-1 and ANSI/AAMI ES60601-1.

 In case of other stipulations in local laws and regulations, implement electrical safety tests by following

relevant stipulations.

 All devices driven by AC power and connected to medical instruments in patient zones must comply with

the IEC 60601-1 standard. And electrical safety tests on these devices must be implemented in accordance

with the test interval of the patient monitor.

 Use certified safety analyzer (for example, UL, CSA or AMAI) as instructed to perform relevant tests.

NOTE

 Electrical safety check shall be performed after repair or routine maintenance. Ensure that all cover boards,

panels and screws are correctly installed before implementing electrical safety tests.

 Electrical safety tests are used to timely detect potential electrical safety risks that might cause damage to

patients, operators or maintenance personnel. Electrical safety tests must be carried out under normal

environmental conditions (that is, normal temperature, humidity and barometric pressure).

See Appendix A Electrical Safety Inspection for electrical safety tests.

4-12 BeneVision N1 Patient Monitor Service Manual

4.7 Network Print Test

Tools required: hub and network cable

NOTE

 HP LaserJet Pro M202dw laser printer is recommended for this monitor.

4.7.1 Equipment Connection and Setup

1 Connect the monitor and network printer to a HUB using common network cables as follows:

Monitor

Network cable Network cable

HUB

2 Set the IP address:

a. Use the current Dock net setting: Select Main Menu→Maintenance→enter the password →Dock Setup. Set Net

Setting Type to Use current Dock net setting.

b. Select the IP setup tab, and set the IP address of the monitor to one in the same network segment as that of the

network printer (refer to the instructions for use of the printer).

3 Set the printer:

a. Host mode: Select Main Menu→Maintenance→User Maintenance→ enter the password →Dock Setup. Set Work

Mode to Host Mode. Select the printer setup tab. Set the IP address of the printer to one in the same network

segment as that of the monitor. Select Print Test Page to verify that the printer works properly.

b. Dock mode: Select Main Menu→Maintenance→User Maintenance→ enter the password →Dock Setup. Set

Work Mode to Dock Mode. On the User Maintenance interface, select Print→Printer, and set the IP address of

the printer. Select Print Test Page to verify that the printer works properly.

Network

printer

4.7.2 Print Function Test

1 Enter the Demo mode of the monitor.

2 Select Main Menu→Report column →Normal Report→Realtime Report. Click Print. The network printer prints

the real-time report.

BeneVision N1 Patient Monitor Service Manual 4-13

4.8 Battery Check

4.8.1 Functionality Test

1. Remove the battery from the monitor.

2. Check that the monitor works properly when being powered by the external DC power supply or by the AC power

supply through the Dock.

3. Install the battery according to the procedures described in the Operator's Manual.

4. Disconnect the external DC power supply or the AC power supply on the Dock. Check whether the monitor still

works properly.

4.8.2 Performance Test

Refer to the related content in the Battery chapter in BeneVison N1 Patient Monitor Operator's Manual.

4-14 BeneVision N1 Patient Monitor Service Manual

5 Troubleshooting

5.1 Overview

In this chapter, monitor problems are listed along with possible causes and recommended corrective actions. Refer to

the tables to check the monitor and identify and eliminate these problems.

The recommended solutions given in this chapter address most of the equipment problems you encounter, but do not

include any problems that may arise. Contact us if you have a problem that is not covered in this section.

5.2 Part Replacement

Printed circuit boards (PCBs) and other major parts and components in the monitor are replaceable. Once you have

located the faulty PCB, follow the steps in 6 Repair and Disassembly to replace it and check if the failure is eliminated or

if the monitor passes the relevant tests. If the failure is eliminated, it indicates that the original PCB is damaged. In this

case, send the defective PCB to us for repair. If the failure persists, reinstall the original PCB and continue

troubleshooting as directed in this chapter.

To learn about and get the parts you need to replace, refer to 7 Parts.

5.3 Software Version Check

In troubleshooting that involves software version compatibility, you need to know the monitor configuration and

software version information. For detailed information about version compatibility, contact our after-sales service

department. To check the software version, follow this procedure:

1. Select

Main Menu→System >>→Version >>. In the displayed menu, you can check the system software version

and monitor configuration.

BeneVision N1 Patient Monitor Service Manual 5-1

2. Select Main Menu→Maintenance>>→ enter the user maintenance password →Version >>. In the displayed

menu, you can check the version information of the system software and modules.

5.4 Technical Alarm Check

Before troubleshooting the monitor, check whether the monitor displays technical alarm information. If yes, eliminate

the technical alarm first.

For technical alarm information, causes and solutions, refer to the Operator's Manual of the monitor.

5.5 Troubleshooting Guide

5.5.1 Power-On/Off Failures

Failure Description Possible Cause Troubleshooting

You cannot turn on the

monitor powered only

by the battery.

You cannot turn on the

monitor connected to

the AC adapter (when

the battery is not

available or the battery

is low or faulty).

The battery is not activated. Use the AC adapter or Dock to supply external power to activate

the battery.

The battery is low or the

battery is damaged.

The AC power supply is not

connected.

The AC adapter is faulty. If the monitor can work properly when being connected to the

The main board power supply

is faulty.

The power button PCBA is

faulty.

The main board display circuit

is faulty.

Use the AC adapter or Dock to supply external power to the

monitor. Then turn on the monitor to check the battery level and

battery status. If the battery LED flashes yellow or the system

generates the battery error alarm, the battery is damaged. In this

case, replace the battery.

Verify that the AC power supply is properly connected.

main monitor or the Dock, replace the AC adapter.

If the external power LED is off, replace the main board.

If you can turn on the monitor after connecting it to the

powered-on main monitor, replace the power button PCBA.

If the power LED is on but the display is off, replace the main

board.

5-2 BeneVision N1 Patient Monitor Service Manual

5.5.2 Display Failures

Failure Description Possible Cause Troubleshooting

The monitor displays a

black, white, or flower

screen or displays

horizontal or vertical

lines.

The touchscreen does

not respond.

The touchscreen fails to

respond accurately.

The screen cable is loose. Check whether the screen cable is connected properly. If no,

reconnect it.

The display assembly is faulty. Replace the display assembly.

The main board is faulty. Replace the main board.

The screen cable is loose. Check whether the screen cable is connected properly. If no,

reconnect it.

The display assembly is faulty. Replace the display assembly.

The main board is faulty. Replace the main board.

The touchscreen is faulty. Replace the display assembly.

5.5.3 Alarm Failures

Failure Description Possible Cause Troubleshooting

The alarm lamp is off or

cannot be turned off

while the monitor

sounds audible alarms.

You cannot hear the

alarm.

The main board is faulty. Replace the main board.

The alarm is muted.

1. Check whether the icon is displayed in the alarm status

icon area. If yes, the alarm is muted.

2. Check whether the icon is displayed in the alarm status

icon area. If yes, the alarm is paused or disabled.

The speaker connection

cable is faulty.

The speaker is faulty. Replace the speaker.

The main board is faulty. Replace the main board.

Verify that the cable connecting the speaker to the main board is

properly connected.

5.5.4 Dock or Modular Rack Failures

Failure Description Possible Cause Troubleshooting

The parameter module

cannot be identified.

The monitor provides no

video output, the USB

device or network

cannot be used, or the

The Rack NIOS board is

faulty.

The RACK connector

board is faulty.

The main board is faulty. Replace the main board.

The Dock interface board

is faulty.

The Dock transfer board is

faulty.

Replace the NIOS board.

Verify that the RACK connector board is securely connected to the

NIOS board, or replace the connector board.

Replace the Dock interface board.

Replace the Dock transfer board.

BeneVision N1 Patient Monitor Service Manual 5-3

Failure Description Possible Cause Troubleshooting

monitor cannot be

connected to the main

monitor.

The Dock provides no

power output.

After the monitor is

installed on the Dock,

the external display is

black.

The touchscreen of the

external display cannot

be used.

The main board is faulty. Replace the Dock main board.

The Dock power board is

faulty.

An abnormality occurs

due to hot plug.

The connection sequence

is incorrect.

The USB connection is

abnormal.

Replace the Dock power board.

Reinstall N1.

Connect the display and the Dock first, and then install or start N1.

Reinstall or restart N1.

5.5.5 Operation Failures

Failure Description Possible Cause Troubleshooting

The monitor crashes. The system program is

faulty.

The main board is faulty. Replace the main board.

The monitor is not

identified after being

connected to the main

monitor.

After being connected to

the main monitor, the

monitor is identified but

displays no parameter

waveform.

The time is reset. The battery is faulty. Replace the battery.

The infrared communication

board is faulty.

The main board is faulty. Replace the main board.

The battery charging circuit

is faulty.

The main board is faulty. Replace the main board.

Refresh the system software.

Replace the infrared communication board.

Replace the main board.

5.5.6 Storage Failures

Failure Description Possible Cause Troubleshooting

Historical data and

holographic waveforms

cannot be stored.

N1 reports "Storage Card

Error".

5-4 BeneVision N1 Patient Monitor Service Manual

The data storage device is

faulty.

The main board is faulty. Replace the main board.

The data storage device is

faulty.

Restart N1. If the failure persists, enter the EMMC tab in the

Factory Maintenance menu to format the data storage device

or replace the main board.

Restart N1. If the failure persists, enter the EMMC tab in the

Factory Maintenance menu to format the data storage device

or replace the main board.

5.5.7 Power Supply Failures

Failure Description Possible Cause Troubleshooting

The battery cannot be

fully charged.

The battery cannot be

charged or a battery

charging error is

reported.

The battery cannot

supply power.

The system reports that

the DC power is too high

or too low.

The system reports a

battery communication

error.

The system reports that

the battery is aged.

The system reports a

battery error.

The system reports a

high battery

temperature alarm.

The system reports a

battery off alarm.

The battery is damaged. Replace the battery.

The main board is faulty. Replace the main board.

The battery is damaged. Replace the battery.

The main board is faulty. Replace the main board.

The battery is damaged. Replace the battery.

The battery connection cable

is faulty.

The main board is faulty. Replace the main board.

The power supply is faulty. 1. Turn off the monitor and then restart it.

The battery connection cable

is faulty.

The power supply is faulty. Replace the main board.

The battery is aged. Replace the battery.

The battery is faulty. Replace the battery.

The ambient temperature is

too high.

The battery connection cable

is faulty.

Verify that the battery connection cable is properly connected

and the plug is not damaged.

2. If the failure persists, replace the main board.

Verify that the battery connection cable is properly connected

and the plug is not damaged.

Check whether the ambient temperature is too high. If yes,

reduce the ambient temperature.

Verify that the battery connection cable is properly connected

and the plug is not damaged.

NOTE

 When the power module is faulty, it may cause damage to other components, for example, the monitor

suddenly crashes during startup, due to power supply protection. In this case, troubleshoot the power

module as per the procedure described in the table above.

 Components of the main unit are powered by the power module. When a component malfunctions, verify

the operating voltage is correct.

 If the device has two batteries, replace both batteries if required.

BeneVision N1 Patient Monitor Service Manual 5-5

5.5.8 Wi-Fi Failures

Failure Description Possible Cause Troubleshooting

Wi-Fi connection is

unavailable.

The Wi-Fi connection is

disconnected frequently.

The monitor fails to

connect Wi-Fi.

The Wi-Fi module is faulty. Reinstall or replace the module.

The main board is faulty. Replace the main board.

The Wi-Fi- antenna falls off or

is not securely connected to

the module.

The Wi-Fi module is faulty. Replace the Wi-Fi module.

Wi-Fi signals in the region are

unstable.

The IP address is incorrect. Check whether an IP address conflict exists in the network. If yes,

Wi-Fi signals in the region are

unstable.

The Wi-Fi antenna falls off or

is disconnected from the

Wi-Fi module.

The main board is faulty. Replace the main board.

Disassemble the monitor and secure the Wi-Fi antenna.

Check the Wi-Fi connection of the hospital.

reset the IP address.

Check the Wi-Fi connection of the hospital.

Secure the Wi-Fi antenna.

5.5.9 Wired Network Failures

Failure Description Possible Cause Troubleshooting

The monitor fails to

connect to a wired

network.

The network connection is

disconnected frequently.

The monitor is connected

to a network, but the

Remote View function is

unavailable.

The network cable fails

to be connected

properly.

The IP address is

incorrect.

The network cable is

faulty.

The main board is

faulty.

The network cable fails

to be connected

properly.

The IP address is

incorrect.

The network cable fails

to be connected

properly.

There are too many

monitors to be viewed.

The network setting is

incorrect.

Make sure that the network cable is properly connected and is not

close to the power cord of high power equipment, and the length of

the network cable is less than or equal to 50 m.

Check whether an IP address conflict exists in the network. If yes,

reset the IP address.

Replace the network cable.

Replace the main board.

Make sure that the network cable is properly connected and is not

close to the power cord of high power equipment, and the length of

the network cable is less than or equal to 50 m.

Check whether an IP address conflict exists in the network. If yes,

reset the IP address.

Make sure that the network cable is properly connected and is not

close to the power cord of high power equipment, and the length of

the network cable is less than or equal to 50 m.

Confirm the maximum number of simultaneously connected

monitors according to the Operator's Manual.

Check whether an IP address conflict exists in the network. If yes,

reset the network.

5-6 BeneVision N1 Patient Monitor Service Manual

5.5.10 Software Upgrade Failures

Failure Description Possible Cause Troubleshooting

The program cannot be

upgraded.

The connection is

faulty.

The program upgrade

package is incorrect.

The IP address of the

PC is incorrect.

The main board is

faulty.

1. Check that the network cable is connected to the network

interface on the monitor.

2. Ensure the normal operation of the network hub or switch, and

verify the hub cable or crossover cable is properly connected.

Ensure that the upgrade package is a .pkg file corresponding to the

program to be upgraded.

Configure a fixed IP address in range C as specified for the monitor.

You are not advised to upgrade a program t to when the monitor is

connected to a network with multiple PCs.

Replace the main board.

BeneVision N1 Patient Monitor Service Manual 5-7

FOR YOUR NOTES

5-8 BeneVision N1 Patient Monitor Service Manual

6 Repair and Disassembly

6.1 Tools

During disassembly and part replacement, the following tools may be required:

 Small Phillips screwdriver (used to remove and install M2 screws; the head model is PH0)
 Phillips screwdriver (used to remove and install M3 screws; when the N1 main unit face plate needs to be removed,

the rod length of the screwdriver must be greater than or equal to 115 mm)

 Tweezers
 Terminal screw dismounting tool (the 898-000417-00 N1 terminal assembly fixture is recommended)
 Needle nose pliers
 Hexagon spanner (used to remove M6 hex socket screws)

6.2 Preparations for Disassembly

Before disassembling the monitor, stop monitoring the patient, turn off the monitor, and disconnect all the accessories

and peripheral devices.

WARNING

 Before disassembly, be sure to eliminate static electricity. When removing some parts with the electrostatic

sensitive marks, wear protective devices such as antistatic wristband or gloves to avoid damaging the parts.

 Properly connect and route the cables and wires when reassembling the monitor to avoid short circuits.
 Use specified screws to reassemble the monitor. If unfit screws are tightened by force, the monitor may be

damaged and the screws or part may fall off during use, causing unpredictable equipment damage or

human injury.

 Follow the correct sequence to disassemble the monitor.
 Place the removed parts by category to facilitate reassembly. Do not drop, contaminate or lose them.
 To reassemble the monitor, first install the assemblies, and then the main unit. Carefully route the cables.
 Make sure that the waterproof materials are properly applied during reassembly.

BeneVision N1 Patient Monitor Service Manual 6-1

6.3 Disassembling the N1 Main Unit with the CO

6.3.1 Removing the Battery Door and Battery

1. Remove the screw cover and loosen the screw.

2. Hold the screw with your hand and open the battery door.

3. Pull out the battery connection cable and remove the battery.

NOTE



When disassembling the main unit, be sure to pull out the battery connection cable herein and remove the

battery to avoid electricity in subsequent disassembly steps.

Module

2



When reinstalling the battery, place the battery connection cable into the left B1 socket as shown below.

The battery connection cable is routed as follows. When inserting the connection cable into the socket,

align the connector to avoid damage to connector pins.

6-2 BeneVision N1 Patient Monitor Service Manual

6.3.2 Installing the Battery and Battery Door

1. Connect the battery to the B1 socket on the main unit through the battery connection cable.

2. Insert the battery into the battery housing with the cable facing up.

3. Route the battery connection cable. Do not squeeze the cable.

Connect battery to B2 socket

3. Secure the battery door using a M3 screw.

4. Use a screw cover to cover the screw hole.

Battery door

Route the cable.

This side up

M3 screw

Screw cover

BeneVision N1 Patient Monitor Service Manual 6-3

6.3.3 Removing the Display Assembly

1. Use the small Phillips screwdriver to remove the two screen pins fixing the display assembly.

2. Use one hand to support the display assembly, and use the screwdriver to press the hole in the battery housing and

push out the display assembly, as shown below.

NOTE



Use one hand to support the display assembly as shown below. Otherwise, the FPC plug wire of the display

assembly will be damaged.

3. Use your hand to hold the display assembly after it is pushed out.

4. Use one hand to hold the display assembly as shown below, and the other to loosen the FPC plug wire on the

display assembly, and remove the display assembly.

6-4 BeneVision N1 Patient Monitor Service Manual

NOTE



If the light pipe of theindicator is released after the display assembly is removed, install the light pipe at

the position shown in the figure below.

NOTE



When assembling the display assembly, press the two corners shown in the figure below, and press the

display assembly into the rear housing.

6.3.4 Removing the Rear Housing

1. Use the terminal screw dismounting tool to remove the two terminal screws fixing the rear housing.

2. Remove the four M3×5 screws fixing the rear housing.

BeneVision N1 Patient Monitor Service Manual 6-5

NOTE



To ensure flat assembly of the face plate, when fixing the four screws on the rear housing, do as follows:

lay the N1 main unit flatwise, and turn the four screws by 2-3 circles for preliminary fixing; place the N1

main unit vertically, and use one hand to press the main unit and the other to tighten the screws.

NOTE



After assembly, check that the silicon cover shown in the figure below is assembled properly.

3. Use your hand to press the battery housing to separate the main frame, and then remove the rear housing.

6-6 BeneVision N1 Patient Monitor Service Manual

6.3.5 Removing the Infrared Backboard

1. Loosen the two M3×5 screws fixing the infrared backboard.

2. Remove the infrared backboard.

3. Tilt the N1 main unit as shown below, and remove the two terminal nuts shown in the figure below.

6.3.6 Removing the Main Board

1. Remove the four M3×5 screws fixing the main board.

BeneVision N1 Patient Monitor Service Manual 6-7

2. Remove the DC-in connection cable.

NOTE



Check that the waterproof jacket and connection cable are installed properly when reassembling the DC-in

connection cable.

3. Loosen the Wi-Fi antenna (when the N1 main unit is configured with the Wi-Fi function).

6-8 BeneVision N1 Patient Monitor Service Manual

NOTE



To prevent the board from crushing the Wi-Fi antenna, route the Wi-Fi antenna according to the direction

shown in the figure when reassembling the Wi-Fi antenna.

4. Loosen the connection cable of the CO

module.

2

5. Loosen the connection cable of the power switch on the main unit.

BeneVision N1 Patient Monitor Service Manual 6-9

6. Loosen the connection cable of the speaker.

7. Loosen the connection cable of the analog output (when the N1 main unit is configured with analog output), and

remove the main board.

6.3.7 Removing the Parameter Board

1. Loosen the four M3×5 screws fixing the main board.

2. Remove the block fixing the parameter board.

6-10 BeneVision N1 Patient Monitor Service Manual

3. Use one hand to loosen the latch and the other to take the parameter board.

4. Loosen the NIBP pump connection cable and NIBP valve connection cable.

5. Loosen the NIBP air tubing on the parameter board, and remove the parameter board.

BeneVision N1 Patient Monitor Service Manual 6-11

6.3.8 Removing the NIBP Gas Circuit and NIBP Valve

1. Loosen the connection between the NIBP gas circuit and interface board.

2. Loosen the connection between the NIBP gas circuit and integrated pump pipe.

3. Loosen the two M3×5 screws fixing the valve frame.

4. Remove the NIBP valve.

NOTE



When installing the NIBP valve, place the cables upwards with the quick release valve of the red cable on

the left and the slow release valve of the blue cable on the right. Lead the NIBP pump connection cable

through under the valve plate.

6-12 BeneVision N1 Patient Monitor Service Manual

6.3.9 Removing the NIBP Pump

1. Loosen the exhaust pipe of the CO2 module.

2. Loosen the air inlet pipe of the CO2 module.

3. Loosen the zero calibration pipe of the CO

module.

2

BeneVision N1 Patient Monitor Service Manual 6-13

NOTE



After reassembling the exhaust pipe, air inlet pipe and zero calibration pipe, clamp them in the tie mount

according to the sequence shown in the figure, and arrange them in order.

4. Loosen the four M3×5 screws fixing the CO2 module sheet.

5. Remove the CO

module sheet.

2

6. Remove the NIBP pump.

6-14 BeneVision N1 Patient Monitor Service Manual

6.3.10 Removing the CO

1. Loosen the mushroom head with a silicone cover on the CO2 module.

2. Loosen the silicone cover head on the CO2 module.

3. Loosen the connection cable between the CO

4. Loosen the slot position of the connection cable.

Module

2

module and water trap.

2

5. Use a pair of tweezers to remove the two CO2 module rings.

BeneVision N1 Patient Monitor Service Manual 6-15

NOTE



When reinstalling the module rings, keep the ring side with a gap upward, and clamp the inverted fastener

of the ring into the hole in the silicone cover.

6. Remove the CO

module.

2

6.3.11 Removing the CO

Module Assembly

2

1. Loosen the three M2.5×4 countersunk head screws on the cover plate of the CO2 module.

2. Remove the cover plate of the CO

module.

2

3. Remove the end cap of the CO

module gas circuit.

2

6-16 BeneVision N1 Patient Monitor Service Manual

4. Press the latch of the CO2 module connection cable, and remove the connection cable.

5. Remove the zero calibration pipe, short circuit pipe and exhaust pipe on the CO2 module.

6. Remove the silicone cover.

6.3.12 Removing the Interface Board

1. Loosen the three M3×5 screws fixing the main frame.

2. Remove the main frame.

3. Loosen the M3×5 countersunk head screw fixing the power button.

BeneVision N1 Patient Monitor Service Manual 6-17

4. Remove the power keypad.

5. Use one hand to loosen the latch fixing the CO

water trap and the other to remove the CO2 water trap.

2

6.4 Disassembling the N1 Main Unit with Two Batteries

6.4.1 Removing the Battery Door and Battery

1. Remove the screw cover and loosen the screw.

2. Remove the screw, and then remove the battery door.

3. Remove the battery from the primary battery housing, and remove the battery connection cable.

NOTE



When disassembling the main unit, be sure to pull out the battery connection cable herein and remove the

battery to avoid electricity in subsequent disassembly steps.



When reinstalling the battery, install the battery connection cable of the primary battery housing into the

left B1 socket. Route the battery connection cable as shown below. When inserting the connection cable

into the socket, align the connector to avoid damage to connector pins.

6-18 BeneVision N1 Patient Monitor Service Manual

4. Remove the battery from the secondary battery housing. Remove the battery connection cable.

NOTE



When disassembling the main unit, be sure to pull out the battery connection cable herein and remove the

battery to avoid electricity in subsequent disassembly steps.



When reinstalling the battery, install the battery connection cable of the secondary battery housing into

the right B2 socket. Route the battery connection cable as shown below. When inserting the connection

cable into the socket, align the connector to avoid damage to connector pins.

BeneVision N1 Patient Monitor Service Manual 6-19

6.4.2 Installing the Battery and Battery Door

1. Installing the secondary battery.

a. Connect the battery to the B2 socket on the main unit through the battery connection cable.

b. Insert the battery into the secondary battery housing with the cable facing up.

c. Route the battery connection cable.

Connect battery to B2 socket.

Route cable as indicated

2. Installing the primary battery.

a. Connect the battery to the B1 socket on the main unit through the battery connection cable.

b. Insert the battery into the primary battery housing with the cable facing up.

Insert the battery.

This side up.

c. Route the battery connection cable. Do not squeeze the cable.

Connect battery to B2 socket

Route the cable.

3. Secure the battery door using a M3 screw.

Insert the battery.

This side up

6-20 BeneVision N1 Patient Monitor Service Manual

4. Use a screw cover to cover the screw hole.

Battery door

M3 screw

Screw cover

6.4.3 Removing the Display Assembly

1. Use the small Phillips screwdriver to remove the two screen pins fixing the display assembly.

2. Use one hand to support the display assembly, and use the screwdriver to press the hole in the battery housing and

push out the display assembly, as shown below.

NOTE



Use one hand to support the display assembly as shown below. Otherwise, the FPC plug wire of the display

assembly will be damaged.

BeneVision N1 Patient Monitor Service Manual 6-21

3. Use your hand to hold the display assembly after it is pushed out.

4. Use one hand to hold the display assembly as shown below, and the other to loosen the FPC plug wire on the

display assembly, and remove the display assembly.

NOTE



If the light pipe of theindicator is released after the display assembly is removed, install the light pipe at

the position shown in the figure below.

NOTE



When assembling the display assembly, press the two corners shown in the figure below, and press the

display assembly into the rear housing.

6-22 BeneVision N1 Patient Monitor Service Manual

6.4.4 Removing the Rear Housing

1. Use the terminal screw dismounting tool to remove the two terminal screws fixing the rear housing.

2. Remove the four M3×5 screws fixing the rear housing.

NOTE



To ensure flat assembly of the face plate, when fixing the four screws on the rear housing, do as follows:

lay the N1 main unit flatwise, and turn the four screws by 2-3 circles for preliminary fixing; place the N1

main unit vertically, and use one hand to press the main unit and the other to tighten the screws.

BeneVision N1 Patient Monitor Service Manual 6-23

NOTE



After assembly, check that the silicon cover shown in the figure below is assembled properly.

3. Use your hand to press the battery housing to separate the main frame, and then remove the rear housing.

6.4.5 Removing the Infrared Backboard

1. Loosen the two M3×5 screws fixing the infrared backboard.

2. Remove the infrared backboard.

6-24 BeneVision N1 Patient Monitor Service Manual

3. Tilt the N1 main unit as shown below, and remove the two terminal nuts shown in the figure below.

6.4.6 Removing the Main Board

1. Remove the four M3×5 screws fixing the main board.

2. Remove the DC-in connection cable.

NOTE



Check that the waterproof jacket and connection cable are installed properly when reassembling the DC-in

connection cable.

BeneVision N1 Patient Monitor Service Manual 6-25

3. Loosen the Wi-Fi antenna (when the N1 main unit is configured with the Wi-Fi function).

NOTE



To prevent the board from crushing the Wi-Fi antenna, route the Wi-Fi antenna according to the direction

shown in the figure when reassembling the Wi-Fi antenna.

4. Loosen the connection cable of the power switch on the main unit.

6-26 BeneVision N1 Patient Monitor Service Manual

5. Loosen the connection cable of the speaker.

6. Loosen the connection cable of the analog output (when the N1 main unit is configured with analog output), and

remove the main board.

6.4.7 Removing the Parameter Board

1. Loosen the four M3×5 screws fixing the main board.

2. Remove the block fixing the parameter board.

BeneVision N1 Patient Monitor Service Manual 6-27

3. Use one hand to loosen the latch and the other to take the parameter board.

4. Loosen the connection between the NIBP gas circuit and parameter board U26 sensor.

5. Loosen the connection between the NIBP gas circuit and parameter board U23 sensor.

6. Loosen the NIBP pump connection cable and NIBP valve connection cable, and remove the parameter board.

6-28 BeneVision N1 Patient Monitor Service Manual

6.4.8 Removing the NIBP Gas Circuit and Secondary Battery housing

1. Loosen the connection between the NIBP gas circuit and interface board.

2. Loosen the connection between the NIBP gas circuit and pump.

NOTE



During reassembly, the NIBP gas circuit should be connected to the outermost gas outlet.

3. Loosen the three M3×5 screws fixing the secondary battery housing.

4. Use your hand to push the secondary battery housing to remove it from the latch.

NOTE



After reassembling the secondary battery housing, confirm that the pump connection cable and valve

connection cable have been placed in the latch.

BeneVision N1 Patient Monitor Service Manual 6-29

5. Use a pair of tweezers to press the pump head, and remove the secondary battery housing.

6.4.9 Removing the NIBP Pump and Valve

1. Remove the NIBP pump.

2. Loosen the two clamping positions of the NIBP valve cable, and remove the valve.

NOTE



When reassembling the valve, place the quick release valve of the red cable on the left and the slow release

valve of the blue cable on the right. See the figure below for the specific placement positions.

6-30 BeneVision N1 Patient Monitor Service Manual

6.4.10 Removing the Interface Board

1. Loosen the three M3×5 screws fixing the main frame.

2. Remove the main frame.

3. Loosen the M3×5 countersunk head screw fixing the power button.

4. Remove the power keypad.

BeneVision N1 Patient Monitor Service Manual 6-31

6.5 Removing the N1 Dock

6.5.1 Removing the Bottom Housing

1. Remove the four M3×8 screws from the bottom housing.

2. Remove the bottom housing.

6.5.2 Removing the Right Shell Assembly

1. Remove the four screw covers from the right shell.

2. Remove the four M3×8 screws from the right shell.

3. Remove the right shell module.

6-32 BeneVision N1 Patient Monitor Service Manual

6.5.3 Removing the Rotatable Plate

1. Remove the four M3×8 screws with pad from the rotatable plate.

2. Remove the rotatable plate.

6.5.4 Removing the Transition Board

1. Remove the six M3×6 screws from the transition board.

2. Remove the transition board plate.

3. Remove the transition board, and loosen the connection cable.

NOTE



During reassembly, route the connection cable as shown below. Do not press any cables.

BeneVision N1 Patient Monitor Service Manual 6-33

6.5.5 Removing the Port Module

1. Remove the two M3×6 screws from the port module.

2. Remove the port module, and loosen the indicator connection cable.

NOTE



During reassembly, the sheet metal of the port module is clamped on the latch as shown below. Be sure to

properly assemble the silicone cover of the network cable connector.

6-34 BeneVision N1 Patient Monitor Service Manual

6.5.6 Removing the Interface Board and Power Board

1. Remove the plug wire from the interface board.

2. Loosen the two M3×6 screws from the interface board.

3. Remove the interface board.

4. Remove the four M3×6 screws from the power board.

5. Remove the power board.

6. Loosen the latch on the power outlet, and remove the power connection cable.

BeneVision N1 Patient Monitor Service Manual 6-35

6.5.7 Removing the LED Indicator

1. Remove the LED bracket.

2. Remove the LED indicator.

NOTE



During reassembly, the indicator with the yellow cable is installed on the left, and the indicator with the

red cable is installed on the right.

6.6 Removing the N1 Modular Rack

6.6.1 Removing the Rear Housing

1. Remove the five screw covers from the rear housing.

2. Loosen the five M3×8 screws on the rear housing.

3. Remove the rear housing.

NOTE



After reinstalling the rear housing, check that the unlocking button works well.

6-36 BeneVision N1 Patient Monitor Service Manual

6.6.2 Removing the Unlock Rod

1. Loosen the M2.5×8 screw on the unlock rod.

2. Remove the unlock rod.

3. Remove the unlocking button and spring.

6.6.3 Removing the Infrared Backboard

1. Loosen the connection cable on the infrared backboard.

2. Loosen the M3×8 screw on the infrared backboard.

3. Remove the infrared backboard.

BeneVision N1 Patient Monitor Service Manual 6-37

6.6.4 Removing the Transition Board

1. Loosen the two PT3×10 self-tapping screws on the transition board.

2. Remove the transition board assembly.

3. Loosen the two M2×8 screws fixing the transition board.

4. Remove the waterproof jacket from the transition board socket.

5. Remove the transition board.

6.6.5 Removing the Contact Screws

1. Loosen the M3 self-locking nuts from the contact screws, and then remove the contact screws, contact springs and

spring plates.

6-38 BeneVision N1 Patient Monitor Service Manual

6.7 Removing N1 Transport Dock

6.7.1 Removing the Transition Board

1. Loosen and remove the four M3×5 countersunk head screws from the bottom of bottom plate.

2. Loosen and remove the two M3×5 countersunk head screws from the left side of bottom plate.

3. Remove the bottom plate.

6.7.2 Removing the Power Adapter

1. Remove the power cable from the power adapter.

2. Loosen the plug on the power adapter.

BeneVision N1 Patient Monitor Service Manual 6-39

3. Remove the power adapter.

NOTE



Before reassembling the adapter, use a ruler to measure the position or refer to the position of the original

adapter, and attach a piece of black foam to the cable. In addition, attach a shockproof pad to the magnet ring.

66±1 mm

NOTE



When placing the cable into the Transport Dock, align the left edge of the foam with the position shown in

the figure below.

6-40 BeneVision N1 Patient Monitor Service Manual

7 Parts

7.1 Introduction

This chapter lists the exploded views of the main unit and all the parts and part numbers of the repairable parts. It helps

the maintenance personnel to identify the parts during disassembly and part replacement. The part numbers listed in

the "Part Number" columns of all parts lists are used only to assist the maintenance personnel in searching for the

corresponding FRU part numbers. Please provide the FRU parts numbers if you want to purchase the spare parts.

The figure below shows the hardware architecture of the N1 main unit:

NOTE

 The part numbers listed in the "Part Number" columns of all parts lists are used only to assist the

maintenance personnel in searching for the corresponding FRU part numbers. Please provide the FRU parts

numbers if you want to purchase the spare parts.

BeneVision N1 Patient Monitor Service Manual 7-1

7.2 Main Unit

7.2.1 Exploded View

7.2.2 Parts List

No. Description FRU Part Number Remark

Display assembly (TRULY) 115-049058-00

1

2 Pin for screen 041-026193-00 /

3 T1 spanner (POM) / /

4 Screw cover 2 (T8) 049-000650-00 /

5 Battery door (rubber) 043-007866-00 /

6 N1 Li-ion battery 115-049427-00 /

7 N1 terminal screw 041-026393-00 /

8

9 N1 back cover silkscreen / /

10 Main frame assembly / /

Display assembly (TIANMA) 115-049059-00

T1 infrared lens (ESM) /

Two kinds of screens

compatible with each

other

/

7-2 BeneVision N1 Patient Monitor Service Manual

7.3 Display assembly

7.3.1 Exploded View

7.3.2 Parts List

No. Description FRU Part Number Remark

1 Refaction to light for instruction

2 Light guild pillar /

3 Refraction to light of alarm /

4 Beryllium copper spring, slot type, plated with nickel, 16" M6T-030009---

5 EVA FOR screen /

6 Screen of skete /

7 Conductive fabric gasket /

8 5.5" display touchscreen /

9 Sponge and shielding sheet /

BeneVision N1 Patient Monitor Service Manual 7-3

115-049058-00 (with TRULY

display or

115-049059-00 (with TIANMA

display)

/

7.4 Rear Housing Assembly

7.4.1 Exploded View

7.4.2 Parts List

No. Description FRU Part Number Remark

1 N1 backcover silkscreen

2 T1 spanner (POM) 043-008495-00

3 T1 infrared lens (ESM) 043-008505-00

115-050694-00

/

7-4 BeneVision N1 Patient Monitor Service Manual

7.5 Main Unit Assembly

7.5.1 Exploded View (for CO2 Module Configuraiton)

7.5.2 Parts List

No. Description FRU Part Number Remark

1 Main board

3 Rack female plug cover /

2

4 DC-in cable 009-008383-00 /

5 Infrared backboard PCBA 051-002742-01 /

6 DC water-proof silicon / /

7 M02D end cup

/ CO2 pipe

8 Pump shock-absorbing pad

27 Pump, DC12V, 300mmHg with wire and connector /

9 Pipeline end cap

10 Gas circuit whole pipe /

13 Rubber tube /

15 Plastic connector

22 Air cock pipe (M02D) /

18 Sensor interface tube /

Main frame (M02D) 043-008180-00

115-048114-00

115-049056-00

115-049054-00

115-049055-00

/

For the monitor

with the CO

module.

/

/

2

BeneVision N1 Patient Monitor Service Manual 7-5

No. Description FRU Part Number Remark

20 Connector, elbow

21 Filter /

11 630F reducer 082-000098-00 /

It is used for the

12 Valve, 2-way, DC12V, 50mm wire 082-002751-00

monitor with

the CO

14 M02D valve frame / /

16 Crosshead pan screw / /

module.

2

M51C5L-FE,3-SPO

, IBP, AO (N1) 051-002832-00 3/5-lead ECG

2

17

M51C12L-FE,3-SPO2, IBP, AO (N1) 051-002833-00

24 Tie mount, 3.6X10.2, square, 94V-2 009-007779-00 /

25 M02D insulating trip / /

26 M02D module sheet / /

It is used for the

28 M02D module ring 043-007926-00

monitor with

the CO

It is used for the

29 CO2 module main unit, AION Rhodium 115-048090-00

monitor with

the CO

It is used for the

30 CO2 model shock absorption silica gel 049-001261-00

monitor with

the CO

31 M02D module sheet / /

32 Post movable nut 041-027293-00 /

33 N1 Battery shock-absorbing sponge / /

－

Screw, M2.5×4

35 Battery compartment / /

36 Screw, M3×5, , / /

module.

2

module.

2

module.

2

37 PCBA press block / /

Refer to 7.6

38 Parameter interface board (CO2) assembly /

Parameter

Interface Board

Assembly

39 N1 main frame connect nut / /

40 CO2 support pad / /

7-6 BeneVision N1 Patient Monitor Service Manual

7.5.3 Exploded View (for 2-battery Configuration)

7.5.4 Parts List

No. Description FRU Part Number Remark

1 Main board

3 Rack female plug cover

2 Main frame 043-007704-00 /

4 DC-in cable 009-008383-00 /

5 Infrared backboard PCBA 051-002742-01

6 DC water-proof silicon / /

7 Housing

8 Infrared lens, ESM 043-008505-00

10 T1 spanner (POM) 043-008495-00

9 Terminal screw 041-026393-00

11 Pump shock-absorbing pad

12 Pump /

115-048114-00

115-050780-00

115-049054-00

/

/

/

26 Adhesive pad for the pump

13 Pump exit tube, for 2-battery configuration

14 Connector, elbow /

17 Sensor interface tube /

115-049057-00

18 Axis tube, for 2-battery configuration /

19 Air cock connecting tube, for 2-battery configuration /

20 Filter /

BeneVision N1 Patient Monitor Service Manual 7-7

/

No. Description FRU Part Number Remark

23 Plastic connector, straight /

24 Tube, L-type /

15 Screw, pan head, Philips, M3X5 030-000962-00 /

051-002833-00 (12-lead

16 M51C module,

21 630F reducer 082-000098-00 /

22 Secondary battery compartment / /

25 Valve, 2-way, DC12V, 50mm wire 082-002707-00 /

27 PCBA press plate / /

28 Post moveable nut 041-027293-00 /

29 Screw cover 049-000650-00 /

30 Screw, M3

32 Battery compartment door /

31 N1 Battery shock-absorbing sponge / /

33 Li-ion battery, 2500mAh 115-049427-00 /

34 Screw, flat head Philips M3X6 / /

35 Battery compartment / /

36 Parameter interface board ( without CO2) assembly / /

37 Pin for screen 041-026193-00 /

38 Main frame connection nut / /

39 Screen assembly

ECG) or

051-002832-00 (3/5-lead

ECG)

043-007866-00

115-049058-00 (TRULY)/

115-049059-00 (TIANMA)

/

/

/

7-8 BeneVision N1 Patient Monitor Service Manual

7.6 Parameter Interface Board Assembly

7.6.1 Exploded View (with the CO

module)

2

BeneVision N1 Patient Monitor Service Manual 7-9

7.6.2 Parts List

No. Description FRU Part Number Remark

1

2

4

5

10

17

19

20

21

22

16

23

6

3

7

8

9

11

12

13

14

15

18

ECG socket of parameter module

SpO2 socket of parameter module

Multi-parameter module TEMP socket

SCREW,FLAT-HD,CROSS,M3X6,NI-P

Parameter interface board (CO

rubber)

2

Spring

IBP socket of parameter module

Waterproof for temp socket

Rainproof rubber

N1 interface board

Pin board for N1 analog output

Screw self-tapping, M3X6

6660 Power Button PCBA

DRYLINE PRIME receptacle with no panel

Rubber button

N1 power key silkscreen

1 slot CO

outlet nipple

2+O2

Rubber sleeve socket

Steel ball.GB308-89 2.5 stainless steel polishing

Hexagon NIBP pedestal (POM)

MPM module analog output interface socket

NIBP outer seat

Speaker, 8 ohm, 1 W

051-002825-00 (12 lead

ECG, Masimo SpO2,

CO2),

051-002824-00 (5/12

lead ECG, Nellcor SpO2,

CO2),

051-002821-00 5/(12

lead ECG, Nellcor SpO2,

CO2),

051-002818-00 (12 lead

ECG, Masimo SpO2)

051-002808-00 /

115-036134-00

/ /

043-007946-00 /

/ /

/ /

/ /

/ /

/ /

/ /

020-000065-00 /

Select the

corresponding

FRU part

number

according to

the parameter

module

configuration

of the monitor.

7-10 BeneVision N1 Patient Monitor Service Manual