Nihon Kohden BSM-4100 User manual

BSM- 4101A BSM- 4101J BSM- 4101K BSM- 4102A BSM- 4102J BSM- 4102K BSM- 4103A BSM- 4103J BSM- 4103K BSM- 4104A BSM- 4104J BSM- 4104K

BSM- 4111A BSM- 4111J BSM- 4111K BSM- 4112A BSM- 4112J BSM- 4112K BSM- 4113A BSM- 4113J BSM- 4113K BSM- 4114A BSM- 4114J BSM- 4114K

SERVICE MANUAL

Life Scope P

BEDSIDE MONITOR

BSM-4100

0634-001539D

Model: BSM-4100A/J/K

Manual code no.: 0634-001539D

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Contents

GENERAL HANDLING PRECAUTIONS ......................................................................... i

WARRANTY POLICY .................................................................................................... ii

Conventions Used in this Manual and Instrument ........................................................ iv

Warnings, Cautions and Notes ........................................................................... iv

Explanations of the Symbols in this Manual and Instrument...............................v

On panels .................................................................................................v

On screen ............................................................................................... vi

Others ..................................................................................................... vi

Section 1 General .................................................................................. 1C.1

Introduction .......................................................................................................................... 1.1

General Information on Servicing ......................................................................................... 1.2

Service Policy, Service Parts and Patient Safety Checks ....................................................1.4

Service Policy ............................................................................................................1.4

Service Parts ............................................................................................................. 1.4

Patient Safety Checks ...............................................................................................1.5

Composition ......................................................................................................................... 1.6

BSM-4101/4103/4111/4113 ........................................................................................ 1.6

BSM-4102/4104/4112/4114 ........................................................................................ 1.8

Specifications .................................................................................................................... 1.10

Display ...........................................................................................................1.10

Sound ............................................................................................................. 1.10

Alarm ............................................................................................................. 1.10

ECG ............................................................................................................... 1.10

Respiration (Transthoracic impedance pneumography)...................................1.11

SpO2 on BSM-4101/4103/4111/4113 Monitors ...............................................1.11

SpO2 on BSM-4102/4104/4112/4114 Monitors ...............................................1.12

Non Invasive Blood pressure, NIBP ............................................................... 1.12

Invasive Blood Pressure, IBP ........................................................................ 1.13

Temperature ................................................................................................... 1.13

Cardiac Output, CO ........................................................................................ 1.13

Respiration (Thermistor method) .................................................................... 1.14

Inspired Oxygen Fractional Concentration, FiO2............................................. 1.14

Expired Carbon Dioxide Tension, CO2............................................................. 1.14

Trendgraph ..................................................................................................... 1.15

Vital Signs List ............................................................................................... 1.15

Hemodynamics List (BSM-4103/4104/4113/4114 monitors only) ................... 1.15

Full Disclosure (QM-421P flash memory card required) ................................. 1.15

ECG/BP Output ............................................................................................. 1.15

Recorder (BSM-4101/4102/4103/4104 monitors only) .................................... 1.15

External Output ..............................................................................................1.16

Power Requirement ........................................................................................ 1.16

Environment ................................................................................................... 1.16

Dimensions and Weight (approximate) ........................................................... 1.16

Service Manual BSM-4100 C.1

CONTENTS

Electromagnetic Compatibility........................................................................ 1.16

Safety Standard ............................................................................................. 1.16

Names and Function of Parts ............................................................................................. 1.18

Front Panel ............................................................................................................... 1.18

Socket Panel............................................................................................................1.20

On the BSM-4101/4103/4111/4113 Monitors .................................................. 1.20

On the BSM-4102/4104/4112/4114 Monitors .................................................. 1.20

Using the Output Signal from the ECG/BP OUT Socket ................................1.21

Using Multi-parameter Sockets for CO and CO

Left Side Panel ......................................................................................................... 1.22

Right Side Panel.......................................................................................................1.22

Storage and Transport ........................................................................................................ 1.23

Storage ..................................................................................................................... 1.23

Transport .................................................................................................................. 1.23

Hard Keys and Soft Keys ................................................................................................... 1.24

Hard Keys ................................................................................................................ 1.24

Soft Keys ................................................................................................................. 1.24

Upgrading the System Software and Changing Language on the Screen ........................... 1.25

Procedure ......................................................................................................1.25

Board/Unit Connection Diagram .........................................................................................1.26

Block Diagram .................................................................................................................... 1.27

Monitoring ............................ 1.21

Section 2 Troubleshooting ................................................................... 2C.1

General ................................................................................................................................. 2.1

Power-Related Problems ......................................................................................................2.2

Display Problems ................................................................................................................. 2.3

Sound Problems ...................................................................................................................2.4

Key Operation Problems ....................................................................................................... 2.4

Recording Problems ............................................................................................................. 2.5

ECG and Respiration by Impedance Method Problems ........................................................2.6

SpO2 Problems.....................................................................................................................2.7

Non-invasive Blood Pressure Problems ...............................................................................2.8

Other Vital Sign Input Problems ...........................................................................................2.9

ECG/BP Output Problems .................................................................................................. 2.12

Option Problems ................................................................................................................ 2.13

Section 3 Diagnostic Check................................................................. 3C.1

Introduction .......................................................................................................................... 3.1

Power On Self Check ........................................................................................................... 3.2

Calling Up the DIAGNOSTIC CHECK Screen .......................................................................3.4

Calling Up the Error History ..................................................................................................3.5

Error Codes ................................................................................................................3.5

System Errors ............................................................................................................ 3.6

Initializing the System .......................................................................................................... 3.7

Performing Manual Check and Other Checks .......................................................................3.8

Calling Up the MANUAL CHECK MENU Screen.........................................................3.9

CPU Check Menu Items........................................................................................... 3.10

C.2 Service Manual BSM-4100

CONTENTS

ROM Check ................................................................................................... 3.10

RAM Check ...................................................................................................3.11

Hard Key Check ............................................................................................. 3.12

Touch Key Check ........................................................................................... 3.13

Sound Check ................................................................................................. 3.14

COM RAM Check .......................................................................................... 3.15

ALARM INDICATOR Check ............................................................................ 3.16

OTHER Check ............................................................................................... 3.17

MEMORY CARD Check ................................................................................. 3.18

ATA CARD Check...........................................................................................3.19

Backlight Check ............................................................................................. 3.20

CRTC Check Menu Items ........................................................................................3.21

GRAPHIC MEMORY Check and CHARACTER MEMORY Check ................. 3.21

GRAPHIC DRAW Check ................................................................................ 3.22

CHARACTER DRAW Check ........................................................................... 3.24

IMAGE DRAW Check .................................................................................... 3.26

DPU Check Menu Items........................................................................................... 3.27

D/A ADJUST.................................................................................................. 3.27

AD TEST ........................................................................................................ 3.28

AUX I/F Check ...............................................................................................3.29

NIBP Check ...................................................................................................3.30

DPU ROM Check ...........................................................................................3.40

DPU RAM Check ........................................................................................... 3.41

DPU COM RAM Check .................................................................................. 3.42

COM Check Menu Items .......................................................................................... 3.43

WS RECORDER Check ................................................................................. 3.43

SERIAL I/F Check ......................................................................................... 3.44

NETWORK CARD Check ...............................................................................3.45

MULTI PARAMETER UNIT Check ................................................................. 3.48

ECG Check .................................................................................................... 3.49

Recorder and Control Block Checks ......................................................................... 3.50

SELF-TEST-PRO No.1 ................................................................................... 3.50

SELF-TEST-PRO No.2 ................................................................................... 3.51

SELF-TEST-PRO No.3 ................................................................................... 3.52

Calibration of Touch Screen ...................................................................................... 3.53

Section 4 Board/Unit Description ........................................................ 4C.1

Block Diagram ...................................................................................................................... 4.1

MAIN Board .........................................................................................................................4.2

DPU Board ........................................................................................................................... 4.6

Motherboard ......................................................................................................................... 4.8

ECG RESP1, ECG RESP2 and ECG RESP3 Boards .......................................................... 4.9

NK SpO2 Board and Nellcor SpO2 Module ..........................................................................4.12

NK SpO2 Board ........................................................................................................4.12

Nellcor SpO2 Module ................................................................................................ 4.12

NIBP Measure Board and NIBP Safety Board ................................................................... 4.13

MP1, MP2 and MP3 Boards ............................................................................................... 4.14

Recorder Unit (for BSM-4101/4102/4103/4104 only) ........................................................... 4.16

Service Manual BSM-4100 C.3

CONTENTS

Power Supply Block ...........................................................................................................4.17

LCD Unit ............................................................................................................................. 4.17

Section 5 Disassembly and Assembly............................................... 5C.1

Before You Begin ..................................................................................................................5.1

Warnings and Caution .................................................................................................5.1

Required Tools ............................................................................................................ 5.1

Opening the Instrument ........................................................................................................ 5.2

Removing the Nellcor SpO2 Module (MP304*) ......................................................................5.6

Removing the Nellcor SpO2 Module (MP506*) ......................................................................5.7

Removing the NIBP Safety Board ........................................................................................5.8

Removing the Motherboard, NIBP Measure Board ............................................................. 5.10

Removing the DPU Board ................................................................................................... 5.12

Removing the MAIN Board ................................................................................................. 5.13

Removing the Analog Boards .............................................................................................5.14

Removing the Recorder Unit............................................................................................... 5.15

Replacing the Touch Screen ............................................................................................... 5.16

Replacing the Backlight Lamps ..........................................................................................5.19

Installing the Options ......................................................................................................... 5.22

Installing QM-421P Flash Disk Card into the Slot on the MAIN Board ..................... 5.22

Replacing the Lithium Battery ............................................................................................ 5.25

Section 6 Maintenance ......................................................................... 6C.1

To Be Replaced Periodically .................................................................................................6.1

Required Tools ...................................................................................................................... 6.1

Measuring and Test Equipment ............................................................................................6.2

YS-073P8 Board/Unit Maintenance Kit ................................................................................. 6.3

Composition ...............................................................................................................6.3

Connection .................................................................................................................6.3

Connection Diagram ................................................................................................... 6.5

Maintenance Check Items and Schedule ............................................................................. 6.6

External ...................................................................................................................... 6.6

Input Conditions ......................................................................................................... 6.6

Operation ................................................................................................................... 6.7

Display .......................................................................................................................6.7

Recorder ..................................................................................................................... 6.7

Vital Sign Parameters.................................................................................................6.8

Power ......................................................................................................................... 6.8

Data Backup .............................................................................................................. 6.9

Safety ........................................................................................................................ 6.9

Others ...................................................................................................................... 6.10

Section 7 Adjustment............................................................................ 7C.1

Sensors in the Recorder Unit ...............................................................................................7.1

Adjusting the Output Voltages with Digital or Analog Multimeter ................................ 7.1

C.4 Service Manual BSM-4100

CONTENTS

Adjusting the Output Voltages with the YS-073P8 Board/Unit Maintenance Kit and

Digital or Analog Multimeter .................................................................................. 7.2

Adjusting the Output Voltages with the YS-073P8 Board/Unit Maintenance Kit and

Oscilloscope .........................................................................................................7.2

Section 8 Replaceable Parts List......................................................... 8C.1

Bedside Monitor BSM-4101/4103/4111/4113 ........................................................................ 8.2

Bedside Monitor BSM-4102/4104/4112/4114 (MP304* included) ........................................ 8.10

Bedside Monitor BSM-4102/4104/4112/4114 (MP506* included) ........................................ 8.18

RG-921P Recorder Unit ...................................................................................................... 8.26

Section 9 Connector Pin Assignment ................................................ 9C.1

MAIN Board .........................................................................................................................9.1

CN006 (for Speaker) .........................................................................................9.1

CN101 (for DPU board) ..................................................................................... 9.2

CN102 (for Connection board) ..........................................................................9.3

CN103 (for Power SW board, Operation board and Alarm Indicator board) ....... 9.4

CN105 (for power supply unit) .......................................................................... 9.4

CN106 (AUX socket) ........................................................................................9.5

CN107 (for program or network card) ................................................................ 9.6

CN108 (for Inverter board) ...............................................................................9.7

CN109 (for QM-421P flash memory) ................................................................ 9.8

CN114 (REMOTE socket) ................................................................................9.9

CN121 (for RG-921P recorder unit) ................................................................... 9.9

CN122 (for RG-921P recorder unit) ................................................................. 9.10

CN123 (for RG-921P recorder unit) ................................................................. 9.10

DPU Board ......................................................................................................................... 9.11

CN701 (for MAIN board) ................................................................................. 9.11

CNJ022 (for Motherboard) .............................................................................. 9.11

CNJ013 (for ECG RESP2 board) .................................................................... 9.11

CNJ031 (for power supply unit) ...................................................................... 9.12

CNJ041 (for NIBP Measure board) .................................................................9.12

CNJ042 (for NIBP Safety board) .................................................................... 9.13

CN705 (for ZB-800P transmitter) ....................................................................9.13

Motherboard ....................................................................................................................... 9.14

CNJ701 (for DPU board) .................................................................................9.14

CNJ305 (for ECG RESP1 board) .................................................................... 9.14

CNJ303 (for ECG RESP2 board) .................................................................... 9.14

CNJ304 (for ECG RESP2 board) .................................................................... 9.15

CNJ301 (for ECG RESP3 board) .................................................................... 9.15

CNJ302 (for ECG RESP3 board) .................................................................... 9.16

CNJ401 (for NK SpO2 board) ......................................................................... 9.16

CNJ601 (for MP2 board) .................................................................................9.17

CNJ602 (for MP3 board) .................................................................................9.17

CNJ501 (for Nellcor SpO2 board) BSM-4102/4104/4112/4114 only ................ 9.18

Operation Board ................................................................................................................. 9.19

CN101 (for Function Dial board) ..................................................................... 9.19

Service Manual BSM-4100 C.5

CONTENTS

CN102 (for MAIN board) ................................................................................. 9.19

Alarm Indicator Board ......................................................................................................... 9.20

CN1 (for MAIN board) .....................................................................................9.20

Power SW Board ................................................................................................................ 9.20

CN101 (for MAIN board) ................................................................................. 9.20

Connection Board ............................................................................................................... 9.21

CN101 (for LCD unit) ...................................................................................... 9.21

CN102 (for touch screen) ............................................................................... 9.22

CN103 (for MAIN board) ................................................................................. 9.22

Inverter Board .................................................................................................................... 9.23

CN1 (for MAIN board) .....................................................................................9.23

CN2 (for backlight) ......................................................................................... 9.23

Function Dial Board ............................................................................................................ 9.23

CN101 (for Operation board)........................................................................... 9.23

Section 10 Internal Switch Setting and Board Compatibility ........... 10C.1

Internal Switch Setting ....................................................................................................... 10.1

MAIN Board ................................................................................................... 10.1

DPU Board .....................................................................................................10.1

Board Compatibility ............................................................................................................ 10.2

MAIN Board ................................................................................................... 10.2

SpO2 Board ................................................................................................... 10.2

ECG RESP1 Board, ECG RESP2 Board, ECG RESP3 Board and Motherboard

...................................................................................................................... 10.2

C.6 Service Manual BSM-4100

GENERAL HANDLING PRECAUTIONS

This device is intended for use only by qualified medical personnel. Use only Nihon Kohden approved products with this device. Use of non-approved products or in a non-approved manner may affect the performance specifications of the device. This includes, but is not limited to, batteries, recording paper, pens, extension cables, electrode leads, input boxes and AC power.

Please read these precautions thoroughly before attempting to operate the instrument.

1. To safely and effectively use the instrument, its operation must be fully understood.

2. When installing or storing the instrument, take the following precautions:

(1) Avoid moisture or contact with water, dust, extreme atmospheric pressure, excessive humidity and temperatures,

poorly ventilated areas, and saline or sulphuric air.

(2) Place the instrument on an even, level floor. Avoid vibration and mechanical shock, even during transport.

(3) Avoid placing in an area where chemicals are stored or where there is danger of gas leakage.

(4) The power line source to be applied to the instrument must correspond in frequency and voltage to product

specifications, and have sufficient current capacity.

(5) Choose a room where a proper grounding facility is available.

3. Before Operation

(1) Check that the instrument is in perfect operating order.

(2) Check that the instrument is grounded properly.

(3) Check that all cords are connected properly.

(4) Pay extra attention when the instrument is in combination with other instruments to avoid misdiagnosis or other

problems.

(5) All circuitry used for direct patient connection must be doubly checked.

(6) Check that battery level is acceptable and battery condition is good when using battery-operated models.

4. During Operation

(1) Both the instrument and the patient must receive continual, careful attention.

(2) Turn power off or remove electrodes and/or transducers when necessary to assure the patient’s safety.

(3) Avoid direct contact between the instrument housing and the patient.

5. To Shutdown After Use

(1) Turn power off with all controls returned to their original positions.

(2) Remove the cords gently; do not use force to remove them.

(3) Clean the instrument together with all accessories for their next use.

6. The instrument must receive expert, professional attention for maintenance and repairs. When the instrument is not

functioning properly, it should be clearly marked to avoid operation while it is out of order.

7. The instrument must not be altered or modified in any way.

8. Maintenance and Inspection:

(1) The instrument and parts must undergo regular maintenance inspection at least every 6 months.

(2) If stored for extended periods without being used, make sure prior to operation that the instrument is in perfect

operating condition.

Service Manual BSM-4100 i

(3) Technical information such as parts list, descriptions, calibration instructions or other information is available for

qualified user technical personnel upon request from your Nihon Kohden distributor.

9. When the instrument is used with an electrosurgical instrument, pay careful attention to the application and/or

location of electrodes and/or transducers to avoid possible burn to the patient.

10. When the instrument is used with a defibrillator, make sure that the instrument is protected against defibrillator

discharge. If not, remove patient cables and/or transducers from the instrument to avoid possible damage.

WARRANTY POLICY

Nihon Kohden Corporation (NKC) shall warrant its products against all defects in materials and workmanship for one year

from the date of delivery. However, consumable materials such as recording paper, ink, stylus and battery are excluded from

the warranty.

NKC or its authorized agents will repair or replace any products which prove to be defective during the warranty period,

provided these products are used as prescribed by the operating instructions given in the operator’s and service manuals.

No other party is authorized to make any warranty or assume liability for NKC’s products. NKC will not recognize any other

warranty, either implied or in writing. In addition, service, technical modification or any other product change performed by

someone other than NKC or its authorized agents without prior consent of NKC may be cause for voiding this warranty.

Defective products or parts must be returned to NKC or its authorized agents, along with an explanation of the failure.

Shipping costs must be pre-paid.

This warranty does not apply to products that have been modified, disassembled, reinstalled or repaired without Nihon

Kohden approval or which have been subjected to neglect or accident, damage due to accident, fire, lightning, vandalism,

water or other casualty, improper installation or application, or on which the original identification marks have been

removed.

In the USA and Canada other warranty policies may apply.

CAUTION

United States law restricts this device to sale by or on the order of a physician.

ii Service Manual BSM-4100

EMC RELATED CAUTION

This equipment and/or system complies with the International Standard IEC 60601-1-2 for electromagnetic

compatibility for medical electrical equipment and/or system. However, an electromagnetic environment that

exceeds the limits or levels stipulated in the IEC 60601-1-2, can cause harmful interference to the equipment

and/or system or cause the equipment and/or system to fail to perform its intended function or degrade its

intended performance. Therefore, during the operation of the equipment and/or system, if there is any

undesired deviation from its intended operational performance, you must avoid, identify and resolve the

adverse electromagnetic effect before continuing to use the equipment and/or system.

The following describes some common interference sources and remedial actions:

1. Strong electromagnetic interference from a nearby emitter source such as an authorized radio station or

cellular phone:

Install the equipment and/or system at another location if it is interfered with by an emitter source such

as an authorized radio station. Keep the emitter source such as cellular phone away from the equipment

and/or system.

2. Radio-frequency interference from other equipment through the AC power supply of the equipment and/

or system:

Identify the cause of this interference and if possible remove this interference source. If this is not

possible, use a different power supply.

3. Effect of direct or indirect electrostatic discharge:

Make sure all users and patients in contact with the equipment and/or system are free from direct or

indirect electrostatic energy before using it. A humid room can help lessen this problem.

4. Electromagnetic interference with any radio wave receiver such as radio or television:

If the equipment and/or system interferes with any radio wave receiver, locate the equipment and/or

system as far as possible from the radio wave receiver.

If the above suggested remedial actions do not solve the problem, consult your Nihon Kohden Corporation

subsidiary or distributor for additional suggestions.

The CE mark is a protected conformity mark of the European Community. The products herewith comply

with the requirements of the Medical Device Directive 93/42/EEC.

The CE mark only applies to the BSM-4100K Bedside Monitors.

This equipment complies with International Standard IEC 60601-1-2 (1993) which requires CISPR11, Group 1,

Class B. Class B EQUIPMENT is equipment suitable for use in domestic establishments and in

establishments directly connected to a low voltage power supply network which supplies buildings used for

domestic purposes.

Service Manual BSM-4100 iii

Conventions Used in this Manual and Instrument

Warnings, Cautions and Notes

Warnings, cautions and notes are used in this manual to alert or signal the reader to specific information.

WARNING

A warning alerts the user to possible injury or death associated with the use or misuse of the instrument.

CAUTION

A caution alerts the user to possible injury or problems with the instrument associated with its use or

misuse such as instrument malfunction, instrument failure, damage to the instrument, or damage to other

property.

NOTE

A note provides specific information, in the form of recommendations, prerequirements, alternative

methods or supplemental information.

iv Service Manual BSM-4100

Explanations of the Symbols in this Manual and Instrument

The following symbols found in this manual/instrument bear the respective descriptions as given.

On panels

Symbol Description Symbol Description

Standby

“On” only for a part of instrument

“Off” only for a part of instrument Type CF applied part

Battery Type BF applied part

Battery charging Data input/output

Record start/stop Input/output terminal

Out of paper Alternating current

Alarm suspend Equipotential terminal

Defibrillation-proof type CF applied part

Defibrillation-proof type BF applied part

NIBP Remote terminal

NIBP interval Year of manufacture

NIBP start Serial number

NIBP stop Protective earth

Menu High voltage

Home (monitoring screen)

Attention, consult operator’s manual

Output

The CE mark is a protected conformity mark of the European Community. The products herewith comply with the requirements of the Medical Device Directive 93/42/EEC.

Service Manual BSM-4100 v

On screen

Symbol Description Symbol Description

Alarm suspend with remaining minutes

Alarm off Respiration sync mark

Alarm recording off Value out of range

Recording Current setting

Paper magazine open Adjust setting

Out of paper Touch screen calibration mark

Function key Change scale

QRS/pulse sync mark

Network communicating

Others

Symbol Description

Recycle (On battery pack)

vi Service Manual BSM-4100

Section 1 General

Introduction ......................................................................................................................... 1.1

General Information on Servicing ........................................................................................ 1.2

Service Policy, Service Parts and Patient Safety Checks ...................................................1.4

Service Policy ...........................................................................................................1.4

Service Parts ............................................................................................................ 1.4

Patient Safety Checks ..............................................................................................1.5

Composition ........................................................................................................................ 1.6

BSM-4101/4103/4111/4113 ....................................................................................... 1.6

BSM-4102/4104/4112/4114 ....................................................................................... 1.8

Specifications ................................................................................................................... 1.10

Display ..........................................................................................................1.10

Sound ............................................................................................................ 1.10

Alarm ............................................................................................................ 1.10

ECG ..............................................................................................................1.10

Respiration (Transthoracic impedance pneumography)..................................1.11

SpO2 on BSM-4101/4103/4111/4113 Monitors ..............................................1.11

SpO2 on BSM-4102/4104/4112/4114 Monitors ..............................................1.12

Non Invasive Blood pressure, NIBP .............................................................. 1.12

Invasive Blood Pressure, IBP .......................................................................1.13

Temperature .................................................................................................. 1.13

Cardiac Output, CO ....................................................................................... 1.13

Respiration (Thermistor method) ................................................................... 1.14

Inspired Oxygen Fractional Concentration, FiO2............................................ 1.14

Expired Carbon Dioxide Tension, CO2............................................................ 1.14

Trendgraph .................................................................................................... 1.15

Vital Signs List .............................................................................................. 1.15

Hemodynamics List (BSM-4103/4104/4113/4114 monitors only) .................. 1.15

Full Disclosure (QM-421P flash memory card required) ................................ 1.15

ECG/BP Output ............................................................................................ 1.15

Recorder (BSM-4101/4102/4103/4104 monitors only) ...................................1.15

External Output .............................................................................................1.16

Power Requirement ....................................................................................... 1.16

Environment .................................................................................................. 1.16

Dimensions and Weight (approximate) .......................................................... 1.16

Service Manual BSM-4100 1C.1

Electromagnetic Compatibility....................................................................... 1.16

Safety Standard ............................................................................................ 1.16

Names and Function of Parts ............................................................................................ 1.18

Front Panel .............................................................................................................. 1.18

Socket Panel...........................................................................................................1.20

On the BSM-4101/4103/4111/4113 Monitors ................................................. 1.20

On the BSM-4102/4104/4112/4114 Monitors ................................................. 1.20

Using the Output Signal from the ECG/BP OUT Socket ...............................1.21

Using Multi-parameter Sockets for CO and CO2 Monitoring ........................... 1.21

Left Side Panel ........................................................................................................ 1.22

Right Side Panel...................................................................................................... 1.22

Storage and Transport ....................................................................................................... 1.23

Storage .................................................................................................................... 1.23

Transport .................................................................................................................1.23

Hard Keys and Soft Keys .................................................................................................. 1.24

Hard Keys ............................................................................................................... 1.24

Soft Keys ................................................................................................................ 1.24

Upgrading the System Software and Changing Language on the Screen .......................... 1.25

Procedure .....................................................................................................1.25

Board/Unit Connection Diagram ........................................................................................1.26

Block Diagram ................................................................................................................... 1.27

1C.2 Service Manual BSM-4100

Introduction

1. GENERAL

This service manual provides useful information to qualified personnel to

understand, troubleshoot, service, maintain and repair the BSM-4100A/J/K Bedside

Monitor (referred to as “the instrument” in this service manual).

All replaceable parts or units of this instrument are clearly listed with exploded

illustrations to help you locate the parts quickly.

The “Maintenance” section in this service manual describes the maintenance that

should be performed by qualified service personnel. The “Maintenance” section in

the operator’s manual describes the maintenance that can be performed by the user.

The information in the operator’s manual is primarily for the user. However, it is

important for service personnel to thoroughly read the operator’s manual and

service manual before starting to troubleshoot, service, maintain or repair this

instrument. This is because service personnel need to understand the operation of

the instrument in order to effectively use the information in the service manual.

Service Manual BSM-4100 1.1

1. GENERAL

General Information on Servicing

Note the following information when servicing the instrument.

Safety

••

• There is the possibility that the outside surface of the instrument,

••

such as the operation keys, could be contaminated by contagious

germs, so disinfect and clean the instrument before servicing it.

When servicing the instrument, wear rubber gloves to protect

yourself from infection.

••

• There is the possibility that when the lithium battery is broken, a

••

solvent or toxic substance inside the lithium battery could leak out.

If the solvent or toxic substance touches your skin or gets into your

eye or mouth, immediately wash it with a lot of water and see a

physician.

CAUTION

Liquid ingress

The instrument is not drip-proof, so do not install the instrument where

water or liquid can get into or fall on the instrument. If liquid

accidentally gets into the instrument or the instrument accidentally

drops into liquid, disassemble the instrument, clean it with clean water

and dry it completely. After reassembling, use the patient safety

checks and function/performance checks to verify that there is nothing

wrong. If there is something wrong with the instrument, contact your

Nihon Kohden representative for repair.

Environmental Safeguards

Depending on the local laws in your community, it may be illegal to

dispose of the lithium battery and CRT unit in the regular waste

collection. Check with your local officials for proper disposal

procedures.

Disinfection and cleaning

To disinfect the outside surface of the instrument, wipe it with a non-

abrasive cloth moistened with any of the disinfectants listed below. Do

not use any other disinfectants or ultraviolet rays to disinfect the

instrument.

- Chlorohexidine gluconate solution: 0.5%

- Benzethonium chloride solution: 0.2%

- Glutaraldehyde solution: 2.0%

- Benzalkonium chloride: 0.2%

- Hydrochloric alkyl diaminoethylglycine: 0.5%

1.2 Service Manual BSM-4100

1. GENERAL

Transport

••

• Use the specified shipment container and packing material to

••

transport the instrument. If necessary, double pack the instrument.

Also, put the instrument into the shipment container after packing so

that the buffer material does not get inside the instrument.

••

• When transporting a board or unit of the instrument, be sure to use a

••

conductive bag. Never use an aluminum bag when transporting the

power board, power unit or board on which a lithium battery is

mounted. Also, never wrap the board or unit of the instrument with

styrene foam or a plastic bag which generates static electricity.

Handling the instrument

••

• Because the outside surface of the instrument is made of resin, it is

••

easily damaged. When handling the instrument, remove clutter from

around the instrument and be careful not to damage the instrument

or get it dirty.

••

• Because most of the boards in the instrument are multilayer boards

••

with surface mounted electrical devices (SMD), a special tool is

required when removing and soldering the electrical devices. To

avoid damaging other electrical components, do not remove and

solder SMD components yourself.

Measuring and Test Equipment

Maintain the accuracy of the measuring and test equipment by

checking and calibrating it according to the check and calibration

procedures.

Service Manual BSM-4100 1.3

1. GENERAL

Service Policy, Service Parts and Patient Safety Checks

Service Policy Our technical service policy for this instrument is to replace the faulty unit, board

or part or damaged mechanical part with a new one. Do not perform electrical

device or component level repair of the multilayer board or unit. We do not support

component level repair outside the factory for the following reasons:

• Most of the boards are multilayer boards with surface mounted electrical

devices, so the mounting density of the board is too high.

• A special tool and special repair skill is required to repair the multilayer boards

with surface mounted electrical devices.

Disassemble the instrument or replace a board or unit in an environment where the

instrument is protected against static electricity.

As background knowledge for repair, pay special attention to the following:

• You can reduce the repair time by considering the problem before starting repair.

• You can clarify the source of most of the troubles using the information from the

diagnostic check function of the instrument. Refer to “Diagnostic Check “ of this

manual.

Service Parts

Refer to “Replaceable Parts List” of this manual for the service parts for technical

service that we provide.

NOTE

When ordering parts or accessories from your Nihon Kohden

representative, please quote the NK code number and part name which

is listed in this service manual, and the name or model of the unit in

which the required part is located. This will help us to promptly attend

to your needs. Always use parts and accessories recommended or

supplied by Nihon Kohden Corporation to assure maximum

performance from your instrument.

1.4 Service Manual BSM-4100

1. GENERAL

Patient Safety Checks Periodic maintenance procedures and diagnostic check procedures are provided in

this manual to ensure that the instrument is operating in accordance with its design

and production specifications. To verify that the instrument is working in a safe

manner with regard to patient safety, patient safety checks should be performed on

the instrument before it is first installed, periodically after installation, and after any

repair is made on the instrument.

For patient safety checks, perform the following checks as described in the

International Electrotechnical Commission’s standard, IEC60601-1 (1988):

• Protective earth resistance check

• Earth leakage current check

• Enclosure leakage current check

• Patient leakage current check

• Withstanding voltage check

Service Manual BSM-4100 1.5

1. GENERAL

Composition

BSM-4101/4103/4111/4113

BSM-4101A BSM-4101J BSM-4101K BSM-4111A BSM-4111J BSM-4111K BSM-4103A BSM-4103J BSM-4103K BSM-4113A BSM-4113J BSM-4113K

CD-225P

RG-921P

UR-3586

UR-3563

UR-3566

UR-3541

UR-35421

UR-35431

UR-3544

UR-3546

Chassis

Recorder Unit (BSM-4101/4103)

MAIN Board

DPU Board

Motherboard

Connection Board

Power SW Board

Operation Board

Function Dial Board

ECG RESP1 Board

UR-3547

UR-3548

UR-3561

UR-3564

UR-3567

UR-3557

UR-3558

UR-3559

UR-35591

SC-039R

ECG RESP2 Board

ECG RESP3 Board

NK SPO2 Board

NIBP Measure Board

NIBP Safety Board

MP1 Board

MP2 Board

MP3 Board (BSM-4103/4113)

MP3 Dummy Board (BSM-4101/4111)

Power Supply Block

1.6 Service Manual BSM-4100

1. GENERAL

YS-024R0

YS-024R1

YS-024R3

QM-421P

ZB-800PA

ZB-800PG

ZB-800PK

QI-101P

QI-111P

Operation Panel

Input Panel (BSM-4101/4111)

Input Panel (BSM-4103/4113)

Flash Disk Card (Option)

Transmitter (Option)

Network Card (Option)

Network Printer Card (Option)

Service Manual BSM-4100 1.7

1. GENERAL

BSM-4102/4104/4112/4114

BSM-4102A BSM-4102J BSM-4102K BSM-4112A BSM-4112J BSM-4112K BSM-4104A BSM-4104J BSM-4104K BSM-4114A BSM-4114J BSM-4114K

CD-226P

RG-921P

UR-3586

UR-35631

UR-35661

UR-3541

UR-35421

UR-35431

UR-3544

UR-3546

Chassis

Recorder Unit (BSM-4102/4104)

MAIN Board

DPU Board

Motherboard

Connection Board

Power SW Board

Operation Board

Function Dial Board

ECG RESP1 Board

UR-3547

UR-3548

UR-35611

UR-3564

UR-3567

UR-3557

UR-3558

UR-35592

UR-35593

ECG RESP2 Board

ECG RESP3 Board

NL SPO2 Dummy Board

NIBP Measure Board

NIBP Safety Board

MP1 Board

MP2 Board

MP3 Board (BSM-4104/4114)

MP3 Dummy Board (BSM-4102/4112)

SC-039R

1.8 Service Manual BSM-4100

Power Supply Block

1. GENERAL

YS-024R0

YS-024R2

YZ-024R4

QM-421P

ZB-800PA

ZB-800PG

ZB-800PK

QI-101P

QI-111P

Operation Panel

Input Panel (BSM-4102/4112)

Input Panel (BSM-4104/4114)

Flash Disk Card (Option)

Transmitter (Option)

Network Card (Option)

Network Printer Card (Option)

Service Manual BSM-4100 1.9

1. GENERAL

Specifications

Display

Display size: 12.1 inch, TFT type LCD

Waveform display mode: Non-fade moving or non-fade fixed Viewing area: 246 mm × 184.5 mm Resolution: 800 × 600 dots

Maximum number of waveform trace: 13 traces (12 lead display)

Sweep speed: 25 mm/s, 50 mm/s (At compressed: 6.25 mm/s, Respiration low speed: 1.56 mm/s)

Sweep time: 7.4 s (at 25 mm/s sweep speed)

Waveform display color: 12

Numeric display color: 12

Waveform freeze: Provided

Display waveforms: ECG, respiration, IBP, SpO2 pulse wave, CO2 and CO thermodilution curve

Numerical data display: Heart rate, VPC rate, ST level, respiration rate, IBP (systolic, diastolic, mean),

NIBP (systolic, diastolic, mean), SpO2, pulse rate, temperature, CO, FiO2, ETCO

Synchronization mark: Heart rate sync mark, pulse rate sync mark, respiratory sync mark

Sound

Sound type: Alarm, synchronization, click

Alarm sound: 3 types

Synchronization sound: Pitch variable for IBP and SpO

Alarm

Alarm items: Upper/lower limits alarm, apnea alarm, arrhythmia alarm, connector disconnection

alarm, NOISE alarm, electrode off alarm, waveform detecting alarm, probe off

alarm, cuff/hose check alarm, sensor check alarm, low battery alarm, operating

environment alarm

Alarm types: Crisis (red blinking), Warning (yellow blinking), Advisory (yellow lighting),

Message

Alarm indication: Alarm indicator, highlighted message, alarm sound

Alarm suspend: Provided (for 1 or 2 min)

ECG

Electrode offset potential tolerance: ±500 mV

Input dynamic range: ± 5 mV Internal noise: ≤20 µVp-p (Refer to input) Common mode rejection ration: ≥90 dB Input impedance ≥5 MΩ (at 10 Hz) Input bias current: ≤100 nA

Heart rate count

Calculation method: Moving average/Instantaneous beat to beat (selectable)

Counting range: 0, 12 to 300 beats/min (±2 beats/min)

Arrhythmia analysis

Analysis method: Template matching method

Number of channels: 1 channel

VPC counting rate: 0 to 99 VPCs/min

1.10 Service Manual BSM-4100

Arrhythmia message: ASYSTOLE, VT, VF, VPC RUN, COUPLET, EARLY VPC, BIGEMINY, FREQ

VPC, TACHYCARDIA, BRADYCARDIA, NOISE, Electrode OFF, LEARNING

Arrhythmia recall:

Number of recall files: 16

Storage time per file: 8 s

ST level measurement:

Number of measurement channels:3-electrodes: 1 ch

6-electrodes: 8 ch

10-electrodes: 12 ch

Measuring range: ±2.5 mV

Pacemaker pulse rejection capability: 0.1 to 2 ms, ±2 to 700 mV

ANSI/AAMI EC 13-1992 compatible

Pacing pulse detection ON/OFF

Defibrillation-proof: ECG input protected against 400 J

IEC 60601-2-27 17.101 compatible

ESU interference filter: Provided AC hum filter: OFF: 150 ±10 Hz (> −3 dB)

ON: 23 ±3 Hz (> −3 dB) ≤ −16 dB (50 Hz or 60 Hz)

Lead:

3-electrode cable: I, II, III

6-electrode cable: I, II, III, aVR, aVL, aVF, 2 from V1 to V6

10-electrode cable: I, II, III, aVR, aVL, aVF, V1 to V6

Waveform display:

Display sensitivity: 10 mm/mV ±5% (at ×1 sensitivity) Sensitivity control: ×1/4, ×1/2, ×1, ×2, ×4, or AUTO

Auto positioning: Available

Pacing spike display: Available

Heart rate display update cycle: Every 3 s or when alarm is generated

Alarm items:

Upper limit range: 20 to 300 beats/min in 5 beats/min steps, OFF

Lower limit range: OFF, 15 to 295 beats/min in 5 beats/min steps

Alarm items: TACHYCARDIA, BRADYCARDIA, ASYSTOLE

1. GENERAL

Respiration (Transthoracic impedance pneumography)

Measuring impedance available range: 0 to 2 kΩ Internal noise: ≤0.2 Ω (Refer to input) Excitor current: 30 ±10 µArms at 31.25 kHz Frequency response: 0.1 to 3.2 Hz ±1 Hz (−3 dB)

Respiration counter counting range: 0 to 150 breaths/min

Defibrillation proof: Respiration input protected against 400 J discharge

Waveform display:

Display sensitivity: 10 mm/Ω ±25% (at ×1 sensitivity) Sensitivity control: ×1/4, ×1/2, ×1, ×2, ×4

Respiration rate display update cycle: Every 3 s or when alarm is generated

Alarm:

Upper limit range: 2 to 150 breaths/min in 2 breaths/min steps, OFF

Lower limit range: OFF, 0 to 148 breaths/min in 2 steps

Apnea time: OFF, 5 to 40 s in 5 s steps

Service Manual BSM-4100 1.11

1. GENERAL

SpO

on BSM-4101/4103/4111/4113 Monitors

Measuring range: 50 to 100%

SpO2 accuracy: ±2 digits (80% ≤ SpO2 ≤ 100%)

±3 digits (50% ≤ SpO2 < 80%)

SpO2 display:

Pulse rate display update cycle: Every 3 s or when alarm is generated

Sync tone modulation: Change in 20 steps at 81 to 100% SpO

Waveform sensitivity: ×1/8, ×1/4, ×1/2, ×1, ×2, ×4, ×8

Alarm:

Upper limit range: 51 to 100% SpO2 in 1% SpO2 steps, OFF

Lower limit range: OFF, 50 to 99% SpO2 in 1% SpO2 steps

SpO2 on BSM-4102/4104/4112/4114 Monitors

Measuring range: 1 to 100%

SpO2 accuracy: DS-100A: ±3% SpO

OXIBAND A/N: ±3% SpO OXIBAND P/I: ±3% SpO RS-10: ±3.5% SpO D-YS: ±3% SpO D-YSE: ±3.5% SpO D-YSPD: ±3.5% SpO D-25/D-25L: ±2% SpO N-25: ±2% SpO I-20: ±2% SpO D-20: ±2% SpO R-15: ±3.5% SpO OXICLIQ I: ±2.5% SpO OXICLIQ P: ±2.5% SpO OXICLIQ A: ±2.5% SpO OXICLIQ N: ±2.5% SpO OXI1-2-3 A/N: ±2.5% SpO OXI1-2-3 P/I: ±2.5% SpO

SpO2 display:

Pulse rate display update cycle: Every 3 s or when alarm is generated

Sync tone modulation: Change in 20 steps at 81 to 100% SpO

Waveform sensitivity: ×1/8, ×1/4, ×1/2, ×1, ×2, ×4, ×8

Alarm:

Upper limit range: 51 to 100% SpO2 in 1% SpO2 steps, OFF

Lower limit range: OFF, 50 to 99% SpO2 in 1% SpO2 steps

Non Invasive Blood pressure, NIBP

Measuring method: Oscillometric

Cuff pressure display range: 0 to 300 mmHg Accuracy: ±3 mmHg (0 mmHg ≤ NIBP ≤ 200 mmHg)

±4 mmHg (200 mmHg ≤ NIBP ≤ 300 mmHg)

Safety:

Maximum pressurization value cuff inflation limiter: Adult 300 to 330 mmHg

Neonates 150 to 165 mmHg

Cull inflation time limiter: Adult 161 to 165 s

Neonates 81 to 84 s

1.12 Service Manual BSM-4100

1. GENERAL

Measurement mode: Manual

Continuous

Periodic: 2, 2.5, 5, 10, 15, 30 min, 1, 2, 4, 8 hr interval

NIBP data display update cycle: Updated every measurement

Measurement end sound: Generated when measurement ends

Alarm:

Upper limit range: 15 to 260 mmHg in 5 mmHg steps, OFF

Lower limit range: OFF, 10 to 255 mmHg in 5 mmHg steps

Invasive Blood Pressure, IBP

Measuring range: −50 to 300 mmHg Measuring accuracy: ±1 mmHg ±1 digit (−50 mmHg ≤ IBP < 100 mmHg)

±1% ±1 digit (100 mmHg ≤ IBP ≤ 300 mmHg)

Auto zero balancing range: ±200 mmHg

Auto zero balancing accuracy: ±1 mmHg Transducer sensitivity: 50 µV/V/10 mmHg

Pulse rate counting range: 0, 12 to 300 beats/min

Pulse rate counting accuracy: ±2 beats/min

Noise: Within ±1 mmHg

Temperature zero drift: ±0.1 mmHg/1°C

Frequency response: DC to 20 Hz ±3Hz

Display update cycle: Every 3 or when alarm is generated

BP sync sound: Provided, systolic value 20 to 120 mmHg, changes in 20 steps every 5 mmHg

Alarm:

Upper limit range: 2 to 300 mmHg in 2 mmHg steps, OFF

Lower limit range: OFF, 0 to 298 mmHg steps in 2 mmHg steps

Temperature

Measuring range: 0 to 45°C Measuring accuracy: ±0.1°C (25°C ≤ Temp ≤ 45°C)

±0.2°C ( 0°C ≤ Temp < 25°C)

Temperature drift: within ±0.005°C /°C

Temperature range:

Display range: 0°C to 45°C (32 to 115°F)

Display update cycle: Every 3 s

Alarm:

Upper limit range: 0.1 to 45°C (32 to 113°F) in 0.1°C (1°F) steps, OFF

Lower limit range: OFF, 0 to 44.9°C (31 to 112°F) in 0.1°C (1°F) steps

Cardiac Output, CO

Measuring method: Thermodilution method

Measuring range:

Injectate temperature (Ti): 0°C to 27°C

Blood temperature (Tb): 15°C to 45°C

Thermodilution curve (delta Tb): 0°C to 2.5°C

Cardiac output (CO): 0.1 to 20 L/min

Measuring accuracy:

Ti: ±0.2°C

Tb 25 to 45°C: ±0.1°C

Service Manual BSM-4100 1.13

1. GENERAL

Tb 15 to 25°C: ±0.2°C

CO: ±5%

Temperature drift:

Ti: ±0.005°C /°C

Tb: ±0.005°C /°C

Frequency response (delta Tb): DC to 3 Hz (−3 dB)

Injectate volume range: 3, 5, 10 mL (7F)

1, 2, 3, 4, 5 mL (5F)

Respiration (Thermistor method)

Respiration rate counting range: 0 to 150 breaths/min

Apnea, 5 to 40 s

Accuracy: ±1 breath/min Noise: Within 2.5 Ω (Refer to input) Frequency response: 0.1 to 3 Hz (−3 dB)

Waveform display

Display sensitivity: 10 mm/100 Ω ±10% (at ×1 sensitivity) Sensitivity control: ×1/4, ×1/2, ×1, ×2, ×4

Respiration rate display update cycle: Every 3 or when alarm is generated

Alarm:

Upper limit range: 2 to 150 breaths/min in 2 breaths/min steps, OFF

Lower limit range: OFF, 0 to 148 breaths/min in 2 breaths/min

Apnea time: OFF, 5 to 40 s in 5 s steps

Inspired Oxygen Fractional Concentration, FiO

Measuring range: 10 to 100% O

Accuracy: ±3% full scale (When calibrated at 21% O2)

±2% full scale (When calibrated at 100% O2)

Temperature drift: ±0.12% O2/°C

FiO2 display update cycle: Every 3 s or when alarm is generated

Alarm:

Upper limit range: 19 to 100% in 1% steps, OFF

Upper limit range: OFF, 18 to 99% in 1% steps

Expired Carbon Dioxide Tension, CO

Measuring method: Mainstream (TG-900P)

Measuring range:

TG-900P: 0 to 99 mmHg

Warm-up time: 5 s (min)

Response time

TG-900P: 200 ms (typical) for steps from 10 to 90%

Detectable respiration rate

Mainstream: 3 to 60 breaths/min

Measuring accuracy:

TG-900P: ±4 mmHg (0 ≤ CO2 ≤ 40 mmHg)

±10% reading (40 < CO2 ≤ 76 mmHg)

(When 1 atmospheric pressure, air inspiration, no condensation)

CO2 value display update cycle: Every 3 s or when alarm is generated

Alarm:

Upper limit range: 2 to 99 mmHg in 1 mmHg in 1 steps, OFF

1.14 Service Manual BSM-4100

1. GENERAL

Lower limit range: OFF, 1 to 98 mmHg in 1 steps

Apnea time: OFF, 5 to 40 s

Trendgraph

Trend parameters: Heart rate (or pulse rate), respiration rate, VPC rate, ST level, EVENT, apnea

(time), apnea (frequency), SpO

diastolic and mean), temperature, CO2 and FiO

, NIBP (systolic, diastolic and mean), IBP (systolic,

Trend times: 1, 2, 4, 8, and 24 h

Vital Signs List

Parameters: Heart rate (or pulse rate), VPC rate, ST level, NIBP (systolic, diastolic and mean),

SpO2, IBP (systolic, diastolic and mean), respiration rate, temperature, CO2 and

FiO

Number of files in list: Periodic vital signs list: 120

Entries in vital signs list at NIBP measurement: 120

List interval: Periodic vital signs list: 1, 5, 15, 30 or 60 minutes

Vital signs list at NIBP measurement: at NIBP measurement

Hemodynamics List (BSM-4103/4104/4113/4114 monitors only)

Number of files: 8

Full Disclosure (QM-421P flash memory card required)

Storage time: 48 hours

ECG/BP Output

Output impedance

ECG: ≤100 Ω BP: ≤100 Ω

Output-waveform

ECG: ±5.0 V (at 1 mV/V sensitivity) BP: −0.5 to +3.0 V(at 100 mmHg/V sensitivity)

Heart rate Trigger: Open collector output

Frequency response

ECG: 0.05 to 23 Hz (>−3 dB)

(Differ in ECG display mode setting)

BP: ≥DC to 20 Hz (>−3 dB)

Sensitivity accuracy

ECG: ±5%

BP: ±5% (Exclude offset)

Delay

ECG: Hum filter off: approx. 2 ms

Hum filter on: approx. 10 ms

BP: 20 Hz filter: approx. 30 to 35 ms max

HT: approx. 32 to 64 ms max

Recorder (BSM-4101/4102/4103/4104 monitors only)

Recording method: Thermal array recording

Number of channels: 3 traces (maximum) Recording width: ≥48 mm

Service Manual BSM-4100 1.15

1. GENERAL

Paper speed: 25, 50 mm/s

Recording paper: FQW-50-3-100

External Output

ZB-800PA/PG/PK: Provided

External monitor: Provided

Power Requirement

Line voltage:

BSM-4100A: AC 117 V ±10%

BSM-4100J: AC 100 to 127 V ±10%

BSM-4100K: AC 220 to 240 V ± 10%

DC (NKB-101): 10.8 to 16.0 ±5%

Line frequency:

BSM-4100A: 60 Hz ±2%

BSM-4100J/K: 50 or 60 Hz ±2%

Power consumption: AC: 80 VA maximum

DC: 50 W maximum

Environment

Operating environment

Temperature: 10 to 40°C

Humidity: 30 to 90% RH (0 to 40°C, non-condensing)

Atmospheric pressure: 68 to 106 kPa

Storage environment

Temperature: −20 to +65°C

−15 to +55°C (Recording paper)

Humidity: 15 to 95% RH (0 to 40°C, non-condensing)

Atmospheric pressure: 68 to 106 kPa

Dimensions and Weight (approximate)

Dimensions: 339 mm W × 375 mm H ×159 mm D

Weight: 9 kg (excluding battery)

Electromagnetic Compatibility

IEC60601-1-2 (1993) – Collateral Standard: Electromagnetic compatibility – Requirement and tests

Emissions: CISPR11 Group 1, Class B

Safety Standard

Safety standard: IEC 60601-1 (1988) Amendment 1 (1991), Amendment 2 (1995)

IEC 6060-2-27 (1994) - Particular requirements for the safety of

electrocardiographic monitoring

IEC 60601-2-25 (1993)/NS 1231 (1995) - Particular requirements for the safety of

electrocardiographic

IEC 60601-2-30 (1995) - Particular requirements for the safety of automatic

cycling in direct blood pressure monitoring equipment

According to the type of protection against electrical shock:

CLASS I EQUIPMENT (AC Powered)

Internally Powered EQUIPMENT (BATTERY Powered)

1.16 Service Manual BSM-4100

1. GENERAL

According to the degree of protection against electrical shock

ECG, Respiration (impedance), IBP: Defibrillator-proof type CF applied part

Temperature, CO: CF applied part

NIBP: Defibrillator-proof type BF applied part

SpO

, Respiration (thermistor), CO2, FiO2: BF applied part

According to the degree of protection against harmful ingress of water:

IPX0 (ordinary EQUIPMENT)

According to the degree of safety of application in the presence of FLAMMABLE ANAESTHETIC MIXTURE WITH AIR,

OR WITH OXYGEN OR NITROUS OXIDE:

Equipment not suitable for use in the presence of FLAMMABLE ANAESTHETIC

MIXTURE WITH AIR, OR WITH OXYGEN OR NITROUS OXIDE

According to the mode of operation: CONTINUOUS OPERATION

Service Manual BSM-4100 1.17

1. GENERAL

Names and Function of Parts

Front Panel

SILENCE ALARMS

NIBP

INTERVAL

START/STOP

HOME

14 15

17 18

1.18 Service Manual BSM-4100

1. GENERAL

No. Name Description

1 Alarm indicator

2 Handle For carrying the instrument.

3 SILENCE ALARMS key Silences the alarm sound.

4 Function dial 1 and 2

5 NIBP INTERVAL key Selects NIBP measurement mode. Pressing this key changes the mode.

6 NIBP START/STOP key

7 MENU key Displays the MENU window.

Red or orange lamp blinks according to the alarm settings. Green lamp blinks in synchronization with the patient’s QRS.

Used for setting alarm limits and scrolling list or trendgraphs. When the function dial lamp lights, the function dial is available.

Starts NIBP measurement in selected mode. Pressing the key during measurement stops measurement.

8 HOME key Closes any opened window and displays the monitoring screen.

9 Socket panel Refer to the “Socket Panel” section.

10 Paper magazine Holds recording paper. (BSM-4101/4102/4103/4104 only)

11 Paper window

12 Paper magazine release lever

13 Touch screen

14 Power switch

15 Power lamp Lights when the instrument power is turned on.

16 AC power lamp

17 Battery power lamp Lights when operating on the battery power.

18 Battery charging lamp Lights or slowly blinks when charging.

19 Record key Press to start or stop recording.

20 Out of paper lamp

For checking the amount of recording paper. (BSM-4101/4102/4103/4104 only) Pull up the lever to open the paper magazine. (BSM-4101/4102/4103/4104 only) Displays monitoring data. Touching a key or data on the screen changes displaying screen and settings. Press and hold for more than one second to turn the instrument power on or off.

Lights when the power cord is connected between the AC SOURCE socket and AC outlet.

Blinks when out of paper. Lights when paper magazine is open. (BSM-4101/4102/4103/4104 only)

Service Manual BSM-4100 1.19

1. GENERAL

Socket Panel

On the BSM-4101/4103/4111/4113 Monitors

Refer to Warning and Caution in the "General Safety Information" in the

SpO2 socket

Connects to the SpO2 connection cord.

operator's manual.

ECG/RESP socket

Connects to the ECG connection cord.

Multi-parameter sockets

Connect to the connection cord of the parameter to be monitored (IBP, temperature, CO, CO2, FiO2 or

Refer to Warning and Note on the next page.

NIBP socket

Connects to the air hose.

Refer to Warning and Caution in the

Refer to Warning and Note on the next page.

respiration by thermistor method). The type of parameter is automatically recognized. BSM-4101/4111 monitors have two sockets and BSM-4103/4113 monitors have three sockets.

"General Safety Information" in the operator's manual.

ECG/BP OUT socket

Outputs 100 mmHg/V IBP waveform of the IBP connected to the multi-parameter 1 socket, 1 mV/V ECG waveform and heart rate trigger by using the YJ-910P or YJ-920P ECG/BP output cable. These analog signals can be used as the synchronization signal for other equipment, such as IABP or defibrillator. Refer to the warning on the next page.

On the BSM-4102/4104/4112/4114 Monitors

Multi-parameter sockets

Connect to the connection cord of the parameter to be

NIBP socket

Connects to the air hose.

Refer to Warning and Caution in the “General Safety Information” in the

monitored (IBP, temperature, CO, CO2, FiO2 or respiration by thermistor method). The type of parameter is automatically recognized. BSM-4102/4112 monitors have two sockets and BSM-4104/4114 monitors have three sockets.

operator’s manual.

ECG/RESP socket

Connects to the ECG connection cord.

Refer to Warning and Note on the next page.

NELLCOR

OxiMax

Refer to Warning and Caution in the “General Safety Information” in the operator’s manual.

ECG/BP OUT socket

SpO2 socket

Connects to the SpO

connection cord.

Refer to Warning and Caution in the “General Safety Information” in the operator’s manual.

When “NELLCOR OxiMax” is indicated, MP506 SpO2 module is built in.

Refer to Warning and Note on the next page.

1.20 Service Manual BSM-4100

1. GENERAL

Using the Output Signal from the ECG/BP OUT Socket

WARNING

When using the output signal from the instrument as the synchronization signal for other equipment such

as IABP (intra-aortic balloon pump) or defibrillator:

••

• Set the timing of the other equipment by checking the waveform on the monitoring screen.

••

• Check the condition of the bedside monitor at all times. The output signal may become unstable.

••

• Check that the delay time of the output signal (heart rate trigger 64 ms maximum) is within the range of

••

the connected equipment.

••

• Do not use the heart rate trigger as the synchronization signal for defibrillator.

••

NOTE

The output signal from the ECG/BP OUT socket may become unstable in the following conditions.

••

• Electrode is dry or detached.

••

• Electrode lead is damaged or disconnected from the electrode.

••

• Electrode lead is pulled.

••

• AC interference or EMG noise superimposed.

••

• Air bubbles or blood clog in the circuit for monitoring IBP.

••

• Cord or cable is disconnected or damaged.

••

The Delay Time of the Output Signal

Output Signal

ECG

IBP

Heart rate trigger 32 to 64 ms

Using Multi-parameter Sockets for CO and CO

Filter Setting

Hum filter OFF

Hum filter ON

Filter 20 Hz

Delay Time

2 ms

10 ms

30 to 35 ms

Monitoring

WARNING

••

• When performing defibrillation during CO monitoring, never touch the CO connection cord. Otherwise

••

the discharged energy may cause serious electrical burn, shock or other injury.

••

• When performing defibrillation during CO2 monitoring with the TG-900P CO2 sensor kit, remove the

••

sensor from the patient. When the sensor cannot be removed, do not touch the sensor cable because

the discharged energy may cause serious electrical burn, shock or other injury.

NOTE

••

• CO monitoring using the multi-parameter socket does not comply with the Defibrillator proof type CF.

••

• CO2 monitoring using the multi-parameter socket does not comply with the Defibrillator proof type BF.

••

Service Manual BSM-4100 1.21

1. GENERAL

PC card eject button

PC card lamp

PC card slot

For an optional QI-101P network card.

AUX socket

For connecting a display monitor with a YS-072P5 connection cable.

REMOTE socket

Not available.

Equipotential grounding terminal

For an equipotential grounding lead.

AC SOURCE power cord socket

For the AC power cord.

Fuse holder

Refer to "Connecting the Power Cord and Grounding the Monitor" in Section 2.

Left Side Panel

CAUTION

••

• Use only the Nihon Kohden card.

••

• Do not press the PC card eject button while

••

the PC card lamp is lit. This may damage the

PC card data and interrupt network

communication.

CAUTION

Connect only the specified instrument to the socket marked with by following the specified procedure.

Otherwise, electrical leakage current may harm the patient and operator.

Right Side Panel

Connect only the ZB-800P transmitter to the ZB

socket by following the specified procedure.

Otherwise, electrical leakage current may harm the

patient and operator.

CAUTION

ZB socket

For the ZB-800P transmitter.

1.22 Service Manual BSM-4100

Battery pack holder

Storage and Transport

Follow these procedures when storing or transporting the instrument.

1. GENERAL

Storage

Transport

Before storing the instrument for a long time, perform the following steps:

1. Disconnect the power cord from the instrument.

2. Cover the instrument with a dust cover.

3. If possible, store the instrument in its original shipping container.

4. Make sure the storage place meets the following storage conditions for the

duration of the storage. Storage temperature: −20 to 60°C (−4 to 130°F)

Storage humidity: 15 to 95% RH, non-condensing

To transport the instrument, perform the following steps:

1. Disconnect the power cord from the instrument.

2. Cover the instrument with a dust cover.

3. If possible, transport the instrument in its original shipping container.

Service Manual BSM-4100 1.23

1. GENERAL

Hard Keys and Soft Keys

Hard Keys

Soft Keys

The instrument has six hard keys: SILENCE ALARMS, NIBP INTERVAL, NIBP

START/STOP, MENU, HOME and RECORD.

These keys always have the same functions, regardless of the screen display.

In this manual, hard keys are indicated by CAPITAL LETTERS.

When the MENU key is pressed or the screen is touched, the screen displays

several keys which have different functions depending on the screen display. For

example, when the HR numeric display is touched, the ECG setting screen appears

and several keys such as VITAL ALARM, ARRHYTH ALARM, OTHER

SETTING, etc are displayed.

In this manual, soft keys are indicated by quotation marks (for example, the

“VITAL ALARM” key).

1.24 Service Manual BSM-4100

1. GENERAL

Upgrading the System Software and Changing Language on the

Screen

CAUTION

Upgrading the system software and changing the language on screen

erases all system and monitoring settings. Write down these settings

so they can be re-entered after the software upgrade.

The instrument uses a program card for upgrading its system software and

changing the screen language. When the instrument detects that a program card is

inserted into its PC card slot during the booting stage after it is turned on, it checks

the program card for a system program or language. If the program card contains a

newer version of the system program or language, the instrument automatically

replaces its current system program or language information with the new one. If

the program card contains a system program whose version number is the same or

older than the one in the instrument, you have the option to replace or keep the

current system program. If the program card does not contain a system program,

the instrument continues the boot-up process.

In the system software upgrading or language changing process, the instrument

first deletes the old system software or language stored in its system ROM. Then it

checks whether the data in the system ROM is completely deleted. When the data is

completely deleted, it copies the new version of the system program or language

information from the program card to the system ROM and then checks the copy

process. After the data is successfully copied, it performs the self-check programs

to check the equipment.

Procedure

1. Write down the System Setup settings and monitoring settings of the

instrument.

2. Insert the program card into the PC card slot on the left side panel of the

instrument.

3. Turn on the instrument. The instrument performs the upgrading process and

self-check programs. The DIAGNOSTIC CHECK screen appears.

4. Confirm that the new system software version number appears.

Service Manual BSM-4100 1.25

1. GENERAL

Board/Unit Connection Diagram

Power

Supply

Unit

AUX Socket

CN105

CN121 to CN123

Recorder Unit***

RG-921P

CD-225P/226P

12.1-inch

TFT LCD

Card Slot

Network Card QI-101P,

Network Printer Card QI-111P

or Program Card

Flash Disk

Card

QM-421P

Card Slot

Inverter

CN108

CN102

Touch

screen

Connection Board

UR-3541

DPU Board

UR-3563/

35631

MAIN Board

UR-3586

CN006

CN103

NIBP Measure Board

UR-3564

Speaker

Alarm

Indicator

Power SW

Board

UR-35421

Operation

Board

UR-35431

Function Dial

Board

UR-3544

***BSM-4101/4102/4103/4104 only

CD-225P/226P

Mother-

board

UR-3566/

35661

NIBP Safety

Board

ZB-800P

board)

*BSM-4101/4103/4111/4113 (NK SpO

UR-3567

dummy board)

ECG RESP2

Board

UR-3547

ECG RESP1

Board

UR-3546

BSM-4102/4104/4112/4114 (Nellcor SpO

ECG/BP

Out

ECG RESP3

Board

UR-3548

NIBP

SpO2 Board*

UR-3561/35611

SpO2

MP1 Board

UR-3557

MP1

MP2 Board

UR-3558

MP2

MP3 Board**

MP4 Board

UR-3559/35592

MP3

**BSM-4103/4104/4113/4114 only

ECG/RESP

1.26 Service Manual BSM-4100

Block Diagram

1. GENERAL

DPU Board

CPU

Battery

Lithium

System RAM

512 k x 16 SRAM

System ROM

256 k x 16 Flash

20 MHz

MC68SEC000

Common RAM

256 k x 16 SRAM

Clock

Real-time

Power

Supply

Analog

Converter

DC to DC

BUS

Interrup

/DTACK

/Reset

DPU Bus = Address Bus, Data Bus, Control signal Bus

Bus

Buffer

Bus

Buffer

TxD

Reset

Interface

ZB-800P

+8 V

TxD

Reset

SYLPH

DPU ASIC

(A to D Control)

WDT

/Reset

Reset

+3.3 V

/Reset

RxD

ZB Socket

NIBP Measure

NIBP Safety

Serial communication

Motherboard

Supply

Transfer

A to D Converters on

snd (7:0)

Floating

Power

Floating

BUS

MP3

MP1

SpO2

ECG

RESP3

ECG

BUS

12 lead

ECG RESP1

and Resp

Analog ECG

Speaker

Microcontroller

from Power Supply

ECG RESP3 and MP1 boards

ECG

RESP2

1.5 W

Generator

FM Sound

Multi 3

Multi 2

Multi 1

SpO2

NIBP

ECG Socket

BUS

LED

BUS

Interface

Alarm Indicator

Analog Boards

Driver

Alarm

Board

Indicator

Power

Switch

Power SW Board

Backup RAM

32 k x 8 EEPROM

Super

Capacitor

Boot ROM

64 k x 16 EPROM

Host CPU

System RAM

System ROM

MC68SEC000

MAIN Board

lines

Chip select

512 k x 16 SRAM

1 M x 16 Flash

Main System Bus = Address Bus, Data Bus, Control signal Bus

20 MHz

Local CPU

MC68SEC000

512 k x 16

Flash ROM

RACOON

Recorder ASIC

Rec Bus = Address, Data, Control signal

SRAM

256 k x 16

Interrupt

/DTACK

/Reset

(Recorder Control)

+5 V

Interface

Recorder

Buffer

+5 V

+24 V

Unit

Recorder

/Reset

Interface

ATA Card

PCMCIA Card

+3.3 V

QM-421P

QI-101P

ACORN

Main ASIC

Interface

RxD

Remote

TxD

RxD

AUX

Socket

(CPU Peripheral)

/Reset

Reset

TxD

WDT

From

CG RAM-1

+24 V

+3.3 V

DC to DC

BUS

Analog RGB I/F

CG RAM-2

2 M x 32 SDRAM

IBIS

Graphic ASIC

(LCD Control)

+5 V

+3.3 V

Converter

DC to DC

Unit

Power Supply

C RAM

512 k x 8 SRAM

R (5:0), CLK,

G (5:0), H_Sync

B (5:0), V_Sync

Reset

3.3 V_PS

AC/Battery

+15 V_PS

+5 V

Reset at

Power Fail

Controller

Touch screen

LVDS

G R

Analog RGB

8-bit

Power Supply

Microcontroller

Battery

Interface

Option

Battery Pack

BUS

Interface

XTAL

2 MHz

Buzzer

BUS

Board

Operation

Connection Board

AUX Socket

LED Driver

Driver

Buzzer

Function

Inverter

1700 V AC max

800 x 600

TFT LCD

Dial Board

Touch

Screen

Service Manual BSM-4100 1.27

Section 2 Troubleshooting

General ................................................................................................................................ 2.1

Power-Related Problems .....................................................................................................2.2

Display Problems ................................................................................................................ 2.3

Sound Problems ..................................................................................................................2.4

Key Operation Problems ...................................................................................................... 2.4

Recording Problems ............................................................................................................2.5

ECG and Respiration by Impedance Method Problems .......................................................2.6

SpO2 Problems ....................................................................................................................2.7

Non-invasive Blood Pressure Problems ..............................................................................2.8

Other Vital Sign Input Problems ..........................................................................................2.9

ECG/BP Output Problems ................................................................................................. 2.12

Option Problems ...............................................................................................................2.13

Service Manual BSM-4100 2C.1

General

2. TROUBLESHOOTING

Use the troubleshooting tables to locate, identify, and solve a problem in the

instrument. The problems are divided into general problem areas. Each category

has its own troubleshooting table for fast and easy troubleshooting.

• Power-related Problems

• Display Problems

• Sound Problems

• Key Function Problems

• Recording Problems

• ECG and Respiration by Impedance Method Problems

• SpO

Problems

• NIBP Problems

• Other Vital Sign Input Problems

• ECG/BP Output Problems

• Option Problems

If these sections do not solve the problem, contact your Nihon Kohden

representative.

NOTE

Before contacting your Nihon Kohden representative for technical

support, please provide additional detailed information on the problem.

This will allow your Nihon Kohden representative to provide you with

the best support.

How to use the troubleshooting table

1. Determine which troubleshooting table to use.

2. In the “Problem” column, find the trouble item that matches the problem.

3. Do the action recommended in the “Action” column.

4. If the problem is not solved, do the action for the next possible cause or

criteria.

5. If none of the actions solve the problem, contact your Nihon Kohden

representative.

Service Manual BSM-4100 2.1

2. TROUBLESHOOTING

Power-Related Problems

Problem Possible Cause/Criteria Action

No beep sound and AC power lamp does not light in AC power operation.

No beep sound and the battery power lamp does not light in DC power operation.

DC power operation time is shorter than expected.

Power switch is not operational.

No AC power input. Check the AC power input.

One or both AC inlet fuses is blown. Remove the cause of the blown fuse, then

Faulty connection between CN105 on the MAIN board and power unit. Faulty connection between CN103 on the MAIN board and power SW board.

Faulty power supply unit. Replace the power supply unit.

Faulty power SW board. Replace the power SW board.

The battery is discharged. Charge the battery before use.

The battery is damaged. Replace the battery.

Faulty cable connection between CN021 on the MAIN board and battery receptacle terminals. The battery is near the end of its life (about 1 year). Poor contact between the battery and its contact points in the battery compartment.

The battery has had “memory effect” in which its charge capacity is decreased by frequent incomplete discharging and charging.

Faulty power SW board. Replace the power SW board.

Faulty MAIN board. Replace the MAIN board.

replace the fuse. Check the connection of MAIN board and power unit. Check the connection.

Check the connection.

Replace the battery with a new one.

Clean the contact points between the battery and its compartment terminals. To clear this “memory effect”, fully discharge the battery and then fully charge it a few times. Replace the battery with a new one.

2.2 Service Manual BSM-4100

Display Problems

Problem Possible Cause/Criteria Action

No display and the backlight does not light.

No display, but the backlight lights.

Fine vertical or horizontal lines on the LCD.

Thick vertical or horizontal stripes on the screen. The characters or waveforms are distorted.

The display is dim and the brightness control does not make it brighter.

The Diagnostic Check screen appears in the monitor mode and “OK” is displayed at the POWER ON CHECK RESULT. The Diagnostic Check screen appears in the monitor mode and an error message is displayed at the POWER ON CHECK RESULT. Refer to “Power On Self Check” in Section 3. The screen with a “Check Program Running” message does not change to the next screen after the power is turned on.

System error information appears at the upper left corner on the screen in the monitor mode and the instrument restarts. More than 25 pixels on the screen do not light or have abnormal color. Note that up to 25 pixels with such a problem is considered normal. No waveform is displayed but the connection cord for each vital sign is recognized. No waveform is displayed and the connection cord for each vital sign is not recognized.

2. TROUBLESHOOTING

Faulty connection between CN108 on the MAIN board and inverter. Faulty connection between inverter and LCD unit.

Faulty inverter board. Replace the inverter board.

Faulty backlight lamps. Replace the backlight lamps.

Faulty connection between CN102 on the MAIN board and CN102 on the connection board. Faulty connection between CN103 on the connection board and LCD unit.

Faulty LCD unit. Replace the LCD unit.

Faulty MAIN board. Replace the MAIN board.

Faulty LCD unit. Replace the LCD unit.

Faulty MAIN board. Replace the MAIN board.

Faulty MAIN board. Replace MAIN board.

Faulty MAIN board. Replace the MAIN board.

Faulty connection between CN102 on the MAIN board, connection board and LCD. Battery operation. Set the POWER SAVE MODE to

Dirt on the touch screen (inside or outside). The backlight lamps are near the end of its useful life (25,000 hours of operation). Faulty connection between CN108 on the MAIN board and inverter board.

Faulty Operation board. Replace the Operation board.

Faulty MAIN board. Replace the MAIN board.

Faulty DPU board. Replace the DPU board.

Software bug. Perform the system initialization.

Faulty MAIN board. Replace the MAIN board.

Faulty DPU board. Replace the DPU board.

Faulty MAIN board. Replace the MAIN board.

Faulty DPU board. Replace the DPU board.

Faulty LCD unit. Replace the LCD unit.

Faulty MAIN board. Replace the MAIN board.

Refer to each vital sign troubleshooting section.

Check the connections.

Check the connection.

OFF on the SYSTEM SETUP screen. Clean the surface of touch screen. Replace the backlight lamps.

Check the connection.

Refer to each vital sign troubleshooting section.

Service Manual BSM-4100 2.3

2. TROUBLESHOOTING

Sound Problems

Problem Possible Cause/Criteria Action

No sound.

No sound, except for a hissing sound.

The sound is muffled or distorted.

Faulty connection between CN006 on the MAIN board and the speaker.

Faulty speaker. Replace the speaker.

Faulty MAIN board. Replace the MAIN board.

Faulty speaker. Replace the speaker.

The speaker is blocked. Remove the object blocking the speaker.

Something foreign is touching the speaker. Remove the foreign matter.

The speaker is wrongly attached. Attach the speaker correctly.

Check the connection.

Key Operation Problems

Problem Possible Cause/Criteria Action

No key on the front panel works.

A specified key on the operation panel does not work.

The workable key area does not match the key display on the screen.

Touch screen does not work.

Function dials are not operational.

Faulty connection between CN102 on the Operation board and CN103 on the MAIN board.

Faulty MAIN board. Replace the MAIN board.

Faulty Operation board. Replace the Operation board. Faulty connection cable between CN102 on the

Operation board and CN103 on the MAIN board.

Faulty Operation board.

Faulty MAIN board.

Incorrect calibration of the touch screen.

Faulty connection between the touch screen and Connection board. Faulty connection between connection board and MAIN board.

The key function on the entire screen does not work.

The key function on a partial screen such as upper half screen does not work

Faulty connection between the Operation board and Function Dial board.

Faulty Function Dial board. Replace the Function Dial board.

Faulty MAIN board. Replace the MAIN board.

Check the connection.

Replace the connection cable.

Replace the Operation board.

Replace the MAIN board.

Calibrate the touch screen positioning.

Check the connection.

Faulty connection between the touch screen and CN102 on the Connection board.

Faulty MAIN board.

Faulty touch screen.

Faulty touch screen. Replace the touch screen.

Check the connection.

Replace the MAIN board.

Replace the touch screen.

Check the connection.

2.4 Service Manual BSM-4100

Recording Problems

Problem Possible Cause/Criteria Action

Recording paper does not feed properly.

For page-dependent recording such as trendgraph and vital sign list, the recording does not start at the top of the page

Recording mark does not appear on the screen when the record key is pressed.

Paper magazine open mark appears on the screen.

Out of paper mark appears on the screen.

Recording can be performed when the paper is manually pulled out after the record key is pressed.

Wrong position of the recording paper in the magazine. Load the paper into the magazine

Paper other than Nihon Kohden is used. Use the Nihon Kohden paper.

Photo sensor for detection of the black square on the paper is dirty. Clean the sensor.

Faulty connection between CN122 on the MAIN board and recorder unit.

Faulty black square detection photo sensor or LED of the recorder unit.

2. TROUBLESHOOTING

Faulty connection between CN103 on the MAIN board and Power SW board.

Faulty Power SW board. Replace the Power SW board.

Faulty MAIN board. Replace the MAIN board.

Faulty connection between CN122 on the MAIN board and recorder unit Faulty magazine position sensing micro switch of the recorder unit.

Faulty MAIN board. Replace the MAIN board.

Faulty connection between CN122 on the MAIN board and recorder unit.

Faulty paper detection photo sensor or LED of the reorder unit.

Faulty MAIN board. Replace the MAIN board.

Faulty connection between CN122 on the MAIN board and recorder unit. Faulty paper drive motor of the recorder unit.

Faulty MAIN board. Replace the MAIN board.

Check the connection.

Replace the micro switch. Refer to Section 8 “Replaceable Parts List”.

Check the connection.

Replace the photo sensor and LED. Refer to Section 8 “Replaceable Parts List”.

Check the connection.

Replace the motor. Refer to Section 8 “Replaceable Parts List”.

correctly.

Check the connection.

Replace the photo sensor and LED. Refer to Section 8 “Replaceable Parts List”.

The recorded data such as waveform and grid has a faint part on the paper.

There is missing dots on the recorded data. Straight line is recorded at the same position on the paper. There is different contrast between the upper half and lower half of the paper. The paper speed is unstable and waveform is compressed or extended on time scale.

Abnormally loud rotating sound of the paper drive motor No recording on the paper

Faulty MAIN board. Replace the MAIN board.

Thermal array head is dirty

Paper other than Nihon Kohden is used.

Platen roller has a damage or is deformed. Replace the roller.

The supply voltage for thermal array head (+24 V DC) decreases.

Faulty thermal array head if the dots are missed at the same position on the paper after the head is cleaned.

Faulty thermal array head or recorder unit after head is cleaned. Replace the head or recorder unit.

The thermal array head is incompletely attached to the recorder unit.

Dirty gear or platen roller. Clean the gear and platen roller.

Faulty gear or platen roller Replace the faulty one.

Unstable turn of the paper drive motor

Faulty gear or platen roller Replace the faulty one.

The heat-sensitive side of the paper is not faced to the thermal array head.

Paper other than Nihon Kohden is used. Use the Nihon Kohden paper.

Faulty connection between CN121 on the MAIN board and recorder unit.

The supply voltage for thermal array head (+24 V DC) decreases. Replace the MAIN board.

Faulty thermal array head. Replace the head.

Faulty MAIN board Replace the MAIN board.

Faulty motor Replace the motor.

Clean the head.

Use the Nihon Kohden paper.

Replace the MAIN board.

Replace the head.

Attach the head correctly.

Load the paper into the magazine correctly.

Check the connection.

Service Manual BSM-4100 2.5

2. TROUBLESHOOTING

ECG and Respiration by Impedance Method Problems

Problem Possible Cause/Criteria Action

ATTACH ELECTRODES message is displayed even after each electrode contact part of the electrode lead is short-circuited.

The time constant setting cannot be changed.

Pacing spike is not detected.

The setting, Number of electrodes, is set to a higher number than the actual number of the electrodes. The electrode lead, ECG connection cord or patient cable is faulty.

ECG RESP1 board, ECG RESP2 board or ECG RESP3 board is faulty. The ECG RESP3 board is faulty if the monitoring lead setting can be changed.

Motherboard, DPU board or ECG RESP3 board is faulty if the monitoring lead setting cannot be changed.

ECG RESP2 board, motherboard or DPU board is faulty if the pacing spike detection setting, PACING REJECT, is set to on. ECG RESP3 board is faulty if the pacemaker rhythm is not recognized in the 12 lead ECG interpretation.

Set the number of electrodes correctly. Replace the accessory with a new one.

Replace the ECG input block with a new one*. Replace the ECG input block with a new one*.

Replace the ECG input block or DPU board with a new one*. Replace the ECG input block or DPU board with a new one*. Replace the ECG input block with a new one*.

The ECG waveform is displayed with a different ECG sensitivity from the sensitivity setting.

Monitoring lead setting cannot be changed but the time constant setting can be changed. Display of 12 lead ECG has something wrong.

Respiration waveform is not displayed.

Respiration rate is wrong and the respiration sensitivity is out of control. ECG waveform and respiration waveform are mixed. Respiration waveform is saturated and does not return to the baseline position but the sensitivity is not too high.

ECG RESP1 board is faulty if the ECG waveform at a specified lead is displayed with a different sensitivity from the sensitivity setting. ECG RESP2 board or ECG RESP3 board is faulty if the ECG waveform at all the leads is displayed with a different sensitivity from the sensitivity setting. ECG RESP1 board, ECG RESP2 board or ECG RESP3 board is faulty.

ECG RESP3 board or motherboard is faulty if no 12 lead ECG waveforms are displayed in the 12 LEAD window. ECG RESP1 board, ECG RESP2 board or ECG RESP3 board is faulty if a specified lead of the 12 lead ECG waveforms is not displayed in the 12 LEAD window Electrode, electrode lead, ECG connection cord or patient cable is faulty if the ECG waveform on the screen has something wrong. ECG RESP1 board, ECG RESP2 board, motherboard or DPU board is faulty if the ECG waveform on the screen has nothing wrong. ECG RESP1 board or ECG RESP2 board is faulty. Replace the ECG input

Motherboard or DPU board is faulty. Replace the ECG input

ECG RESP2 board is faulty. Replace the ECG input

Replace the ECG input block with a new one*.

Replace the accessory with a new one.

Replace the ECG input block or DPU board with a new one*.

block with a new one*.

block or DPU board with a new one*.

block with a new one*.

* ECG input block repair kit is required when one of the ECG RESP1 board, ECG RESP2 board, ECG RESP3 board

and motherboard has a failure. Refer to “Board Compatibility” in Section10 “Internal Switch Setting and Board

Compatibility”.

2.6 Service Manual BSM-4100

SpO2 Problems

Problem Possible Cause/Criteria Action

The instrument does not recognize the NK SpO connection cord connected to the SpO instrument.

PULSE SEARCH message is displayed even after the probe is replaced and attachment site is changed. WEAK PULSE message is displayed even after the probe is replaced and attachment site is changed. SpO2 MODULE ERROR message is displayed.

2 socket on the

2. TROUBLESHOOTING

NK SpO2 board or motherboard is faulty or

contact between them is poor if the ECG, impedance method respiration and NIBP measurements are enabled. DPU board is faulty if the ECG, impedance method respiration and NIBP measurements

Check the connection. Replace the NK SpO

2 or ECG input block

with a new one* if the connection has no problem. Replace the faulty board with a new one.

are disabled. NK SpO

2 board is faulty. Replace the faulty board with a

new one.

NK SpO

board is faulty. Replace the faulty board with a

new one.

SpO2 module (Nellcor) is faulty or connection between the motherboard and SpO

2 module is

poor if this error message is displayed, except

Check the connection. Replace the faulty module with a new one

if the connection has no problem. in the following case. If the Nellcor SpO connected to or disconnected from the SpO

2 connection cord is

socket just after the instrument is turned on, it displays this error message at the power on check.

Connect the SpO

cord and turn off the instrument.

Turn on the instrument 10

seconds or more after the power

is turned off.

2 connection

* ECG input block repair kit is required when one of the ECG RESP1 board, ECG RESP2 board, ECG RESP3 board

and motherboard has a failure. Refer to “Board Compatibility” in Section10 “Internal Switch Setting and Board

Compatibility”.

Service Manual BSM-4100 2.7

2. TROUBLESHOOTING

Non-invasive Blood Pressure Problems

Problem Possible Cause/Criteria Action

NIBP MODULE FAILURE message is displayed. NIBP SAFETY CIRCUIT RUNNING message is displayed.

AIR LEAK message is displayed.

The instrument does not recognize the air hose connected to the NIBP socket on the instrument.

NIBP measurement data on the screen is wrong.

The cuff does not inflate when the NIBP START/STOP key is pressed.

DPU board or NIBP Safety board is faulty. Replace the faulty board with a new

Air hose is blocked. Check the air hose.

Air tube between the NIBP Safety board and NIBP socket is blocked or NIBP Safety board or DPU board is faulty if this message appears soon after the NIBP START/STOP key is pressed and NIBP pump sounds like it’s moving.

Air tube between the NIBP Measure board and NIBP socket is blocked or NIBP Safety board or DPU board is faulty if this message appears in a minute after the NIBP START/STOP key is pressed and NIBP pump sounds like it’s moving.

Cuff or air hose has an air leak. Replace the cuff or air hose with a

Air tube between the NIBP Safety board and NIBP socket is loose or disconnected if the cuff is not inflated when the NIBP pump sounds like it’s moving. Air tube between the NIBP Measure board and NIBP socket is loose or disconnected or NIBP Safety board is faulty if the cuff is inflated when the NIBP pump sounds like it’s moving.

The air hose connector is faulty. Replace the air hose with a new one. ECG RESP3 board or NIBP Safety board is faulty or there is poor contact from the ECG RESP3 board to NIBP Safety board if the ECG and impedance method respiration can be measured.

ECG RESP3 board, motherboard or DPU board is faulty or there is a poor contact from the ECG RESP3 board to DPU board if the ECG and impedance method respiration cannot be measured. A wrong cuff size is used or the condition of the cuff wrapped around the patient’s arm is not correct. DPU board is faulty if the ECG, impedance method respiration and SpO measured. NIBP Measure board or DPU board is faulty or there is a poor contact between the two boards if the ECG, impedance method respiration and

2 can be measured.

SpO

If a message is displayed on the screen, follow the message to solve the problem.

The Operation board, MAIN board or the cable between the two boards is disconnected if there is no message on the screen.

2 cannot be

one.

Check the air tube connection. Replace the faulty board with a new one if the air tube is not blocked.

new one. Check the air tube connection.

Check the air tube connection. Replace the faulty board with a new one if the air tube connection has no problem.

Check the connection from ECG RESP3 board to NIBP Safety board through the motherboard and DPU board. Replace the faulty board with a new one if the connection has no problem. Check the connection from the ECG RESP3 board to DPU board through the motherboard. Replace the faulty board with a new one if the connection has no problem. Check the cuff size and the wrapping condition.

Replace the faulty board with a new one.

Check the connection between the two boards. Replace the faulty board with a new one if the connection has no problem.

Refer to ERROR MESSAGES AND TROUBLESHOOTING section in the operator’s manual. Check the cable connection. Replace the faulty board with a new one if the cable connection has no problem.

2.8 Service Manual BSM-4100

ECG/BP Output Problems

Problem Possible Cause/Criteria Action

The instrument does not output the ECG, HT (heart rate) or BP signal from the ECG/BP OUT socket.

The ECG or BP waveform from the ECG/BP OUT socket is wrong.

The ECG/BP output cable is faulty. Replace the ECG/BP output cable

The ECG and HT signals do not output without ECG measurement. The BP signal is not output if the blood pressure is measured at the No. 2 or No. 3 multi-parameter sockets. The connection cable between the DPU board and ECG RESP1 board is disconnected if the ECG, HT and BP are not output.

The DPU board or ECG RESP1 board is faulty if one of the three signals (ECG, HT and BP) is not output. The DPU board is faulty if the ECG or BP waveform amplitude is wrong at the ECG/BP OUT socket but the ECG and invasive blood pressure waveforms are correctly displayed on the screen.

with a new one. Measure the ECG.

Measure the invasive blood pressure at the No. 1 multi-parameter socket.

Check the connection.

Replace the DPU board or ECG input block with a new one*.

Replace the faulty board with a new one.

* ECG input block repair kit is required when one of the ECG RESP1 board, ECG RESP2 board, ECG RESP3 board

and motherboard has a failure. Refer to “Board Compatibility” in Section10 “Internal Switch Setting and Board

Compatibility”.

2.12 Service Manual BSM-4100

Option Problems

Problem Possible Cause/Criteria Action

The instrument does not display the full disclosure window.

The instrument does not transmit the patient’s data at all.

The instrument has no communication with the other bedside monitors and central monitors.

2. TROUBLESHOOTING

The optional QM-421P flash disk card is not installed.

The QM-421P installation, QM-421P card or MAIN board is faulty if “QM-421P” is not displayed at the “OPTION” on the DIAGNOSTIC CHECK screen.

“SYSTEM INITIALIZE” is not done or the QM-421P card or MAIN board is faulty if “QM-421P” is displayed at the “OPTION” on the DIAGNOSTIC CHECK screen.

The optional ZB-800P transmitter is not connected to the instrument. The channel for the ZB-800P is not set at the central monitor or telemetry system.

The ZB-800P or DPU board is faulty. Replace the faulty transmitter or DPU board

The optional QI-101P network card is not installed into the instrument. The network communicating symbol does not appear on the screen.

The network card is poorly inserted into the slot of the instrument. The network cable such as 10Base-T cable is poorly connected between the network card and hub. The hub connected to the instrument is not turned on or is faulty.

The instrument is connected to the hub with 10Base-T cross wiring cable. The instrument is directly connected to the central monitor with 10Base-T straight wiring cable. The network cable is faulty. The network card or MAIN board is faulty.

Install the card into the slot on the MAIN board completely.

Install the card into the slot on the MAIN board completely. Replace the faulty card or board with a new one if the problem still exists after the card installation.

Touch the “SYSTEM INITIALIZE” key on the DIAGNOSTIC CHECK screen to perform the system initialization. Replace the faulty card or board with a new one if the problem still exists after the system initialization. Connect the ZB-800P to the instrument completely. Set the channel correctly at the central monitor or telemetry system.

with a new one. Install the network card into the instrument completely. Firmly insert the network card into the slot.

Firmly connect the network cable between the network card and hub.

Turn on the hub. Replace the hub with a new one if the problem still exists after the power is turned on.

Use the correct internal wiring 10Base-T cable.

Replace the network cable with a new one.

Replace the faulty network card or MAIN board with a new one.

Service Manual BSM-4100 2.13

Section 3 Diagnostic Check

Introduction ......................................................................................................................... 3.1

Power On Self Check .......................................................................................................... 3.2

Calling Up the DIAGNOSTIC CHECK Screen ......................................................................3.4

Calling Up the Error History .................................................................................................3.5

Error Codes ...............................................................................................................3.5

System Errors ........................................................................................................... 3.6

Initializing the System .........................................................................................................3.7

Performing Manual Check and Other Checks ......................................................................3.8

Calling Up the MANUAL CHECK MENU Screen........................................................3.9

CPU Check Menu Items.......................................................................................... 3.10

ROM Check .................................................................................................. 3.10

RAM Check ..................................................................................................3.11

Hard Key Check ............................................................................................ 3.12

Touch Key Check .......................................................................................... 3.13

Sound Check ................................................................................................ 3.14

COM RAM Check ......................................................................................... 3.15

ALARM INDICATOR Check ........................................................................... 3.16

OTHER Check .............................................................................................. 3.17

MEMORY CARD Check ................................................................................ 3.18

ATA CARD Check..........................................................................................3.19

Backlight Check ............................................................................................ 3.20

CRTC Check Menu Items .......................................................................................3.21

GRAPHIC MEMORY Check and CHARACTER MEMORY Check ................ 3.21

GRAPHIC DRAW Check ............................................................................... 3.22

CHARACTER DRAW Check .......................................................................... 3.24

IMAGE DRAW Check ...................................................................................3.26

DPU Check Menu Items.......................................................................................... 3.27

D/A ADJUST................................................................................................. 3.27

AD TEST ....................................................................................................... 3.28

AUX I/F Check ..............................................................................................3.29

NIBP Check ..................................................................................................3.30

DPU ROM Check ..........................................................................................3.40

DPU RAM Check .......................................................................................... 3.41

DPU COM RAM Check ................................................................................. 3.42

Service Manual BSM-4100 3C.1

COM Check Menu Items ......................................................................................... 3.43

WS RECORDER Check ................................................................................ 3.43

SERIAL I/F Check ........................................................................................ 3.44

NETWORK CARD Check .............................................................................. 3.45

MULTI PARAMETER UNIT Check ................................................................ 3.48

ECG Check ................................................................................................... 3.49

Recorder and Control Block Checks........................................................................ 3.50

SELF-TEST-PRO No.1 .................................................................................. 3.50

SELF-TEST-PRO No.2 .................................................................................. 3.51

SELF-TEST-PRO No.3 .................................................................................. 3.52

Calibration of Touch Screen ..................................................................................... 3.53

3C.2 Service Manual BSM-4100

Introduction

3. DIAGNOSTIC CHECK

The instrument has two check programs which automatically or manually diagnose

the instrument. The automatic check program (power on self check) is executed

whenever the instrument is turned on. The manual check program can be executed

at any time.

All errors detected during the power on self check, manual check, and any time in

monitor mode are stored in an error history table that you can view.

The manual check, error history, and system setup and initialization are accessed

from the DIAGNOSTIC CHECK screen.

Service Manual BSM-4100 3.1

3. DIAGNOSTIC CHECK

Power On Self Check

The following icon appears during the power on self check.

If no error is detected, the monitor mode begins and the patient monitoring display

appears. If a serious error which does not allow the host CPU to execute the system

program any more is detected, the screen changes to the following DIAGNOSTIC

CHECK screen and the error mesage is displayed.

If a minor error such as “Backup data is damaged” or “Super capacitor is

discharged” is detected, the monitor mode begins and the patient monitoring

display appears after the power on self check. The detected error is stored in the

error history table. Refer to “Calling Up the Error History” section.

3.2 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

The MAIN board and DPU board are checked as follows:

• CPU ROM CHECK: Checks the system ROM for the host CPU on the MAIN

board. The MAIN board will be faulty if an error which causes a partial screen

problem is found.

• CPU RAM CHECK: Checks the system RAM for the host CPU and patient data

storage. The MAIN board will be faulty if an error which causes a screen

problem is found.

• DPU ROM CHECK: Checks the system ROM for the CPU on the DPU board.

The DPU board will be faulty if an error which causes a screen problem or data/

waveform display problem is found.

• DPU RAM CHECK: Checks the system RAM for the CPU on the DPU board.

The DPU board will be faulty if an error which causes a screen problem or data/

waveform display problem is found.

• 2PORT RAM CHECK: Checks the common memory (Dual port RAM on the

DPU board) for the communication between the MAIN and DPU boards. The

DPU board will be faulty if an error which causes a screen problem or data/

waveform display problem is found.

• CLOCK IC CHECK: Checks the real-time clock IC on the MAIN board. If the

date or time is wrong, the clock IC is initialized. The MAIN board will be faulty

if an error is found.

• A/D CHECK: Checks the system counter. The MAIN board will be faulty if an

error which disables the data processing function is found.

• E2PROM CHECK: Checks the backup memory for the system setup data storage.

If the data is wrong, the memory is initialized. The MAIN board will be faulty if

an error is found.

If a serious error is found in the abovementioned checks, the instrument displays

the DIAGNOSTIC CHECK screen without displaying the patient monitoring

screen.

The following data checks are also done. The data is corrected if necessary.

• BACK UP CHECK: Checks the backed up data. If the backed up data has

something wrong, the data is initialized.

• TIME CHECK: Checks correctness of the time.

• GET TIME CHECK: Checks the period during the AC power off in the battery

operation and adjusts the time data if it is wrong.

Service Manual BSM-4100 3.3

3. DIAGNOSTIC CHECK

Calling Up the DIAGNOSTIC CHECK Screen

Use this screen to view the error history or perform manual check or system setup

and initialization.

1. With the power off, press the Power switch while pressing the SILENCE

ALARMS key. Continue pressing the SILENCE ALARMS key until the

DIAGNOSTIC CHECK screen appears.

2. To exit the DIAGNOSTIC CHECK screen and return to the patient monitoring

mode, touch the “MONITOR MODE” key.

3.4 Service Manual BSM-4100

Calling Up the Error History

The ERROR HISTORY screen shows the error history of the instrument. The error

code, board name, time, and date the error occurred are listed on this screen. For an

explanation of error codes, see the “Error Codes” section. The error history data is

deleted whenever system initialization is performed.

1. From the DIAGNOSTIC CHECK screen, touch the “HISTORY” key. The

HISTORY screen appears. Then, touch the “ERROR HISTORY” key to display

the error history.

3. DIAGNOSTIC CHECK

Error Codes

2. Touch the “PRINT” key to print the screen with the recorder.

3. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

When a fault is detected during operation or during the power on self check, the

error is stored in the error history table. The error codes stored in the error history

are only deleted when system initialization is performed. If the memory space for

the error history is filled up, however, the oldest error code is deleted when a new

error code is added.

The message and description of each error code are described in the following

table:

Error Code Message Description

0110 WATCH DOG Interrupt from the watch dog timer

0210 BUS Bus error occurred when an empty address was

selected

0220 ADDRESS Address error when a word accessed the odd

address

0230 ILLEGAL Illegal command is executed

Service Manual BSM-4100 3.5

3. DIAGNOSTIC CHECK

0240 ZERO Zero division error

0250 CHK Check command error occurred during check

0260 TRAP Trap command error

0270 PRIVILEGE Privilege error

0280 SPURIOUS Undefined interrupt error

0290 UNDEFINED Not used

02A0 UNDEFINED Not used

02B0 UNDEFINED Not used

02C0 OTHER Error from faults other than ones described

above

0310 OS Error detected by the OS

0410 CPU (ROM) Error detected by CPU ROM check

0411 WS (ROM) Error detected by WS ROM check

0420 CPU (RAM) Error detected by CPU RAM check

0430 CPU (CMRAM) Error detected by CPU communication RAM

check

0440 A/D, D/A Error detected by A/D and D/A check

0470 CLOCK Error detected by the real time clock

0472 CLK DATA Error detected by CLOCK DATA check

0480 E2PROM Error detected by EEPROM check

0510 ATA CARD

ACCESS ERROR Error detected by ATA card (QM-421P) check

0400 OTHER Error from faults other than those described

above

A410 DPU (ROM) Error detected by DPU ROM check

A420 DPU (RAM) Error detected by DPU RAM check

A430 DPU (CMRAM) Error detected by DPU communication RAM

check

System Errors

3.6 Service Manual BSM-4100

A system error occurs when a fatal fault is detected during operation. All operation

of the instrument is halted and the CPU operation status data at the system error

appear on the left top of the screen. The system error is mostly stored in the error

history table. In a few seconds after the status data is displayed, the instrument

restarts. If the instrument repeats the restart, the MAIN board will be faulty.

Initializing the System

You can delete all stored waveforms and data and the error history and return all

settings to the factory defaults.

Initializing the system deletes all the patient data and error history, and

returns the setting conditions to their default settings.

3. DIAGNOSTIC CHECK

CAUTION

1. From the DIAGNOSTIC CHECK screen, touch the “SYSTEM INITIALIZE” key

until a SYSTEM INITIALIZE confirmation message appears. (Approximately 3

seconds)

All data and user settings are deleted.

2. To exit the DIAGNOSTIC CHECK screen and return to the patient monitoring

mode, touch the “MONITOR MODE” key.

Service Manual BSM-4100 3.7

3. DIAGNOSTIC CHECK

Performing Manual Check and Other Checks

The following checks are available.

With the SILENCE ALARMS key pressed

DIAGNOSTIC CHECK

MANUAL CHECK

CPU CHECK CRTC CHECK

ROM Check

RAM Check

Hard Key Check

Touch Key Check

SYSTEM SETUP SYSTEM INITIALIZE ERROR HISTORY

Character Memory

Check

Graphic Memory

Check

Graphic Draw Check

Power ON

DPU CHECK

D/A adjust

AD test

AUX I/F Check

NIBP Check

With the record key and NIBP

INTERVAL key pressed until the

patient monitoring screen appears

Press the MENU key

TOUCH PANEL CALIBRATION

COM CHECK

WS Recorder

Check

Serial I/F Check

Network Card

Check

Recorder and

Control Block

Checks

SELF-TEST-PRO

No. 1

SELF-TEST PRO

No. 2

Sound Check

COM RAM Check

Alarm Indicator

Check

Other Check

Memory Card Check

ATA Card Check

Back Light Check

In most of these checks, if a fatal error is detected during the check, the operating system hangs. When the system hangs, turn

off the instrument and remove the cause.

ASCII Draw Check

Image Draw Check

Report Draw Check

ROM Check

RAM Check

COM RAM Check

Multi Parameter

Unit Check

ECG Check

EXT I/F Check

SELF-TEST PRO

No.3

3.8 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

Calling Up the MANUAL CHECK MENU Screen

1. From the DIAGNOSTIC CHECK screen, touch the “MANUAL CHECK” key.

The MANUAL CHECK MENU screen appears.

2. To test each item from the MANUAL CHECK MENU screen, touch a menu

item key.

3. To return to the DIAGNOSTIC CHECK screen, touch the “RETURN” key.

4. To exit the DIAGNOSTIC CHECK screen and return to the patient monitoring

mode, touch the “MONITOR MODE” key.

Service Manual BSM-4100 3.9

3. DIAGNOSTIC CHECK

CPU Check Menu Items

The CPU check menu items check the function of the CPU peripherals such as

ROMs, RAMs, Switches, Touch Key, Sound generators, Alarm indicators and

external memory modules.

ROM Check

This item checks the ROMs on the MAIN board by the CRC (cyclic redundancy

check) technique. This check assigns a count number when one set of checks is

successfully completed. A set of checks takes about 1 minute and 30 seconds.

If an error message appears, the MAIN board will be faulty.

Procedure to Start and Exit the ROM Check Program

1. To select the ROM Check, touch the “ROM CHECK” key. The instrument

automatically starts the ROM check.

2. The instrument repeats the check and increments the pass count until you

touch the “RETURN” key.

3. If the check program finds an error, it displays the type of ROM (PROGRAM or

IMAGE) in the above area.

4. To return to the MANUAL CHECK MENU screen at any time, touch the

“RETURN” key.

3.10 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

RAM Check

This item checks the RAM on the MAIN board by comparing the test patterns it

first wrote to the RAM with the test patterns it later read from the RAM. This test

uses 15 test patterns and assigns a count number when a comparison of the 15 test

patterns is successfully completed. The comparison of all the test patterns in this

check takes about 4 minutes.

This check deletes the patient data. If an error message appears, the MAIN board

will be faulty.

Procedure to Start, Stop, and Exit the RAM Check Program

1. To select the RAM Check, touch the “RAM CHECK” key. The instrument

automatically starts the RAM check.

2. The instrument repeats the check and increments the pass count until the

operator touches the “RETURN” key.

3. If the check program finds an error, it displays the address, write data and read

data as shown in the above table.

4. To stop the check temporarily, touch the “STOP” key. The “START” key name

changes to normal and the “STOP” key is highlighted.

To continue the check, touch the “START” key again.

5. To return to the MANUAL CHECK MENU screen at any time, touch the

“RETURN” key.

Service Manual BSM-4100 3.11

3. DIAGNOSTIC CHECK

Hard Key Check

This item checks the operation of the hard keys on the front panel and the function

dials. The hard key and dial layout appear. Pressing the hard key or rotating the

function dial usually highlights the corresponding hard key or dial on the screen.

If the pressed hard key is not highlighted, the hard key may be faulty. If more than

one hard key has this symptom, the operation board, function dial board or MAIN

board will be faulty.

NOTE

The key does not give a key click sound when it is pressed in this

check.

Procedure to Start the Check Keys or to Exit the Key Check Program

1. To check the hard keys, touch the “HARD KEY CHECK” key.

2. In the above screen, confirm that the corresponding pressed key is highlighted

on the screen.

3. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

3.12 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

Touch Key Check

This item checks the touch key operation and positioning. When you start the

check, the screen changes to the touch key check screen, and indicates the position

where you touched. When you touch the screen and move your finger or touch

pen, the target mark traces your position.

If the position of the target mark and the touched position do not match, calibrate

the touch screen.

If you execute the touch key calibration and the position is still incorrect, the

connection board, touch screen, or MAIN board will be faulty.

Procedure to Start the Touch Key Check or to Exit the Touch Key Check Program

1. To check the touch key, touch the “TOUCH KEY CHECK” key.

2. On the above screen, confirm that the touched position matches the target

mark on the screen.

3. To return to the DIAGNOSTIC CHECK screen, press the HOME key.

Service Manual BSM-4100 3.13

3. DIAGNOSTIC CHECK

Sound Check

This item checks the 7 types of sounds generated by the instrument. This check

can also be used to check the alarm circuit and the QRS beep circuit. Check the

quality of sound, loudness, noise, incorrect sound, etc.

If there is no sound or distorted sound, the speaker or MAIN board will be faulty.

Procedure to Check the Sound

1. To check the sound, touch the “SOUND CHECK” key.

2. Touch a sound key, such as “ALARM SOUND1”, “ALARM SOUND2”,

“ALARM SOUND3”, “QRS BEEP (HIGH TONE)”, “QRS BEEP (LOW TONE)”,

“QRS BEEP (VARIABLE)”, “KEY CLICK” to start the check for that sound.

3. To stop the check, touch the “SOUND STOP” key.

4. To change the sound volume, touch the “↑” or “↓” key.

5. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

3.14 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

COM RAM Check

This item checks the dual port RAM for communication between the host CPU on

the MAIN board and CPU on the DPU board. The check method is the same as the

system RAM check. The check program indicates the address, write data and read

data if an error is detected.

This RAM is located on the DPU board. Therefore if an error is detected, the DPU

board or connector which connects the MAIN and DPU boards will be faulty.

Procedure to Start, Stop, and Exit the COM RAM Check Program

1. To select the COM RAM Check, touch the “COM RAM CHECK” key. The

instrument automatically starts the RAM check.

2. If the check program finds an error, it displays the address, write data and read

data as shown in the above table.

3. To stop the check temporarily, touch the “STOP” key. The “START” key name

changes to normal and the “STOP” key is highlighted.

To continue the check, touch the “START” key again.

4. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

Service Manual BSM-4100 3.15

3. DIAGNOSTIC CHECK

ALARM INDICATOR Check

This item checks the function of the alarm indicator located on the top of the

instrument. Check the light of indicator lamp according to the screen indication.

If the color does not light, the connection cable is loose or disconnected or the

MAIN board or indicator board will be faulty. If the indicator lights partially, the

indicator board is faulty.

Procedure to Start the ALARM INDICATOR Check Program

1. To select the Alarm Indicator Check, touch the “ALARM INDICATOR

CHECK” key. The lighting color is highlighted on the screen sequentially.

2. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

3.16 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

OTHER Check

This item checks the clock IC and backup NVRAM (EEPROM). The NVRAM

contains the system setup data. The check program checks correspondence

between write and read data with the stored data retention. Therefore, this check

does not damage the system setup data. If the clock IC and NVRAM have no error,

the “OK” message appears on the screen and current date and time appear at the

top of the screen. If an error message appears, the MAIN board will be faulty.

Procedure to Execute the OTHER Check Program

1. To select the OTHER Check, touch the “OTHER CHECK” key.

The program starts the checking automatically and several minutes later, the

program displays the result of checking.

2. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

Service Manual BSM-4100 3.17

3. DIAGNOSTIC CHECK

MEMORY CARD Check

This item checks the inserted PCMCIA card and its interface. There are two

checks. The ATTRIBUTE CHECK displays the dump list of attribute area which is

in the PCMCIA card. The COMMON CHECK is the write/read check for common

area. This check continues until you touch the “STOP” key or “RETURN” key.

The check method is the same as the system RAM check.

If the PCMCIA card is not inserted, the program displays the CARD NOT

INSERTED message on the screen.

If an error is detected, the PCMCIA card or MAIN board will be faulty.

Procedure to Start MEMORY CARD Check Program

1. To select the MEMORY CARD Check, touch the “MEMORY CARD CHECK”

key.

2. To display the dump list of attribute area which is in the memory card, touch

the “ATTRIBUTE CHECK” key.

3. To start the common check, touch the “COMMON CHECK” key.

If the check program finds an error, it displays the address, write data and read

data as shown in the above table.

4. To stop the check temporarily, touch the “STOP” key. The “START” key name

changes to normal and the “STOP” key is highlighted.

To continue the check, touch the “START” key again.

5. To return to the MANAUL CHECK MENU screen, touch the “RETURN” key.

3.18 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

ATA CARD Check

This item checks the ATA card (QM-421P) and its interface. This check is almost

the same as the MEMORY CARD check, except for the COMMON CHECK.

The COMMON CHECK is the write/read check for common area by each sector.

This check continues until you touch the “STOP” key or “RETURN” key.

The check method is the same as the system RAM check.

If an error is detected, the QM-421P or MAIN board will be faulty.

Procedure to Start and Exit the ATA CARD Check Program

1. To select the ATA CARD Check, touch the “ATA CARD CHECK” key.

2. To display the dump list of attribute area which is in the ATA CARD, touch the

“ATTRIBUTE CHECK” key and touch the “NEXT PAGE” or “PREVIOUS

PAGE” keys, if necessary.

3. To start the common check, touch the “COMMON CHECK” key.

If the check program finds an error, it displays the address, write data and read

data as shown in the above table.

4. To stop the check temporarily, touch the “STOP” key. The “START” key name

changes to normal and the “STOP” key is highlighted.

To continue the check, touch the “START” key again.

5. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

Service Manual BSM-4100 3.19

3. DIAGNOSTIC CHECK

Backlight Check

This item checks the brightness control of the LCD backlight. While the

brightness is manually changed, check that it changes smoothly with no twinkling.

Check that the backlight goes off and has no twinkling when the brightness is set

to minimum.

If the brightness does not change smoothly or the light goes off in the middle of

the brightness bar on the screen, it indicates the end of life of the backlight or

faulty inverter board.

In that case, replace the inverter board, or fluorescent tube which is located on the

top of the backlight unit.

Procedure to Check the Brightness of the LCD Backlight

1. To select the Backlight Check, touch the “BACK LIGHT CHECK” key.

To control the brightness, touch the bargraph or the “↑” or “↓” key to increase

or decrease the brightness.

2. To return to the MANUAL CHECK MENU screen at any time, touch the

“RETURN” key.

3.20 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

CRTC Check Menu Items The CRTC check menu items check the function of the display control block,

including the LCD unit. These check results cannot be recognized by the host

CPU, so you must judge the result.

If an error is found, the MAIN board will be faulty.

GRAPHIC MEMORY Check and CHARACTER MEMORY Check

These items check the Graphic RAM and Character RAM on the MAIN board for

the waveform display or character display by the write/read check technique. If an

error is detected, the error bank, address and data are displayed as a table.

Procedure to Start the GRAPHIC MEMORY Check and CHARACTER

MEMORY Check Program

1. To select the GRAPHIC MEMORY Check or CHARACTER MEMORY

Check, touch the “GRAPHIC MEMORY CHECK” or “CHARACTER

MEMORY CHECK” key.

The “START” key is highlighted to indicate the process of checking.

2. If the check program finds an error, it displays the address (and block bank),

write data and read data as shown in the above table.

3. To stop the check temporarily, touch the “STOP” key. The “START” key name

changes to normal and the “STOP” key is highlighted.

To continue the check, touch the “START” key again.

4. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

Service Manual BSM-4100 3.21

3. DIAGNOSTIC CHECK

GRAPHIC DRAW Check

This item checks the function of the graphic draw plane. Check the figure of

display and colors. At the same time, it checks for defects of LCD pixels all over

the screen.

The plane for wave/graphic screen is in 20 screens and the check program displays

4 planes at a time.

If the screen has a wrong display, the MAIN board or LCD unit will be faulty.

Procedure to Execute the GRAPHIC DRAW Check Program

1. To select the Check, touch the “GRAPHIC DRAW CHECK” key.

Touch the “PLANE 0 - PLANE 3” to “PLANE 16 - PLANE 19” key to display

the plane combination.

2. When the program starts, it draws the grid line first. If you touch the screen,

the pattern changes to the triangular waveform.

After touching the screen again, the pattern on the screen is displayed all over

the screen. The patterns are changed every time the screen is touched.

3. By rotating the upper function dial, the displaying plane(s) change, such as 0,

1, 2, 3 or ALL (the number depends on the plane combination).

To select the waveform to be modified, rotate the lower function dial.

The displayed color can be changed by pressing the SILENCE ALARMS key.

4. At the triangular waveform display mode, you can scroll the waveform by

pressing the MENU key.

Press the RECORD key to change the amplitude of each waveform.

5. To return to the GRAPHIC DRAW CHECK screen, press the HOME key.

6. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

3.22 Service Manual BSM-4100

Screen Flow of GRAPHIC DRAW Check Program

3. DIAGNOSTIC CHECK

Touch Key

Record

For the TFT LCD screen, it is considered normal if some pixels have randomly

abnormal color or do not light. (Up to 25 wrong pixels are considered normal at

the maximum brightness.)

Service Manual BSM-4100 3.23

3. DIAGNOSTIC CHECK

CHARACTER DRAW Check

This item checks the function of the character draw plane. Check the character

display and colors. The plane for character screen is prepared in 4 screens and the

check program displays one plane at a time.

Procedure to Execute the CHARACTER DRAW Check Program

1. To select the CHARACTER DRAW Check, touch the “CHARACTER DRAW

CHECK” key and select a plane.

2. When the program starts, it draws the green characters on the black plane.

Touch the “CHANGE BACK COLOR” key to reverse the plane color.

If you press the MENU key, you can change the display mode in order of normal → blink → reverse → reverse/blink → normal.

3. By rotating the upper function dial, the displaying character size changes.

The displayed color can be changed by pressing the SILENCE ALARMS key.

4. To return to the CHARACTER DRAW CHECK screen, press the HOME key.

5. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

If the screen has a wrong display, the MAIN board or LCD unit will be faulty.

3.24 Service Manual BSM-4100

Screen Flow of CHARACTER DRAW Check Program

Function Dial

3. DIAGNOSTIC CHECK

Function Dial

Service Manual BSM-4100 3.25

3. DIAGNOSTIC CHECK

IMAGE DRAW Check

This item checks the function of the image draw. All the icons and messages,

bitmap images, are displayed one by one. Check the image of the display and

background colors.

This function helps multi-language capability.

Procedure to Start the IMAGE DRAW Check Program

1. To select the IMAGE DRAW Check, touch the “IMAGE DRAW CHECK” key.

Touch the “CHANGE BACK COLOR” key to reverse the plane color.

2. When the program starts, it draws the white image on the black plane.

3. By rotating the lower function dial, the displaying image changes by ten.

By rotating the upper dial, the image changes one by one. Using the “UP” or

“DOWN” key on the screen also changes the image one by one.

4. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

If the screen has a wrong display, the MAIN board or LCD unit will be faulty.

3.26 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

DPU Check Menu Items

The DPU board is a separate subsystem from the MAIN board. The DPU board

consists of CPU, ROMs, RAMs, A to D converter and DMA.

D/A ADJUST

This item is used to check the output voltage level of the D/A converter.

Connect a digital multimeter or oscilloscope to the ZB-800P socket (Pin 4:

Ground, Pin 5: Analog output) and check the following output signals.

D to A output

DC 0 V 0 V ±10 mV DC −V CHECK −5.120 V ±1% DC +V CHECK +5.1175 V ±1% AC 60/30 Hz 60 Hz ±5%, 6 Vp-p ±5%

Procedure to Start the D/A Adjust Check

1. To select the D/A Adjust Check, touch the “D/A ADJUST” key at the DPU

CHECK column. The program outputs 0 V DC.

The “DC 0V” key is highlighted to indicate the status of output.

2. To change the output voltage or waveform, touch each name of the other keys.

3. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

Service Manual BSM-4100 3.27

3. DIAGNOSTIC CHECK

AD TEST

This is not a check. The AD Test table shows the A to D converted values of all the

analog parameters such as ECG, SpO

and NIBP. The other parameters are shown

on the Multi Parameter Unit Check.

Each vital sign data are read from the A to D converter every 2 ms. The maximum

and minimum data of each vital sign data are displayed every 512 ms.

ECG1: ECG waveform data for heart rate STS1: 12 lead ECG status 1 data from the CPU on the ECG RESP3 board

ECG2: ECG waveform data for ZB-800P STS2: 12 lead ECG status 2 data from the CPU on the ECG RESP3 board

SpO2: Plethysmographic pulse wave data I: Lead I waveform data of 12 lead ECG

NIBP: NIBP measurement data II: Lead II waveform data of 12 lead ECG

RESP: Respiration waveform data V1: Lead V1 waveform data of 12 lead ECG

ECG3: ECG waveform data for display V2: Lead V2 waveform data of 12 lead ECG

MP1: Multi-parameter 1 socket input data V3: Lead V3 waveform data of 12 lead ECG

MP2: Multi-parameter 2 socket input data V4: Lead V4 waveform data of 12 lead ECG

MP3: Multi-parameter 3 socket input data V5: Lead V5 waveform data of 12 lead ECG

V6: Lead V6 waveform data of 12 lead ECG

Procedure to start the AD Test

1. To select the AD Test, touch the “AD TEST” key at the DPU CHECK column.

The program shows above table automatically.

2. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

3.28 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

AUX I/F Check

This check is used to check the waveform signal output when the ZB-800PG/K

transmitter is connected to the instrument. The check program outputs a 15 Hz

sawtooth waveform to the transmitter. The radio telemetry receiver, such as a

cardiac telemetry system, receives the transmitted sawtooth waveform signal and

displays it on the screen.

Procedure to start the AUX I/F Check

1. To select the AUX I/F Check, touch the “AUX I/F CHECK” key at the DPU

CHECK column.

The instrument communicates with the transmitter and if it recognized the

connection with the transmitter, indicates “ZB CONNECTION” and outputs the

sawtooth waveform to the transmitter.

2. If there is no connection with the transmitter, the instrument indicates “ZB NO

CONNECTION”.

3. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

Service Manual BSM-4100 3.29

3. DIAGNOSTIC CHECK

NIBP Check

This item checks the function and safety of NIBP circuit and pump. The NIBP

check consist of the following check items:

1) Calibration (1)

2) Calibration (2)

3) Safety Check

4) Inflation Speed

5) Deflation Speed

6) Step Deflation

7) Air leak

To perform the test, prepare the following tools:

Hand bulb pump

Manometer

Y-shape hose connector (The Y-shape hose connector connects one tube of

the dummy cuff to the handbulb pump and manometer.)

700 ml dummy cuff YS-558R9 (A 700 ml dummy cuff is a solid container

that withstands high pressure. The inner volume of this container

must be 700 ml.)

250 ml dummy cuff YS-564R2

Two 3.5 m air hoses (YN-901P and YN-921P)

Procedure to select the item and start the NIBP Check

1. To select the NIBP Check, touch the “NIBP CHECK” key at the DPU CHECK

column. The program changes the screen to the NIBP CHECK.

2. Touch the “SELECT” key to select the check item number.

3. Touch the “START” key to start the check for the selected check item.

NOTE

Make sure there is no pressure applied on the cuff connector before

pressing the “START” key. The program considers the pressure of the

cuff connector as 0 mmHg at the start of the check.

4. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

3.30 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

1. Calibration (1)

The Calibration (1) Check program is not used for calibration but is used to

display the accuracy of the Pressure Sensor 1. The accuracy of the sensor changes

with the measuring pressure. The following table shows the acceptable accuracy

range of the Pressure Sensor 1 at different pressure ranges.

Pressure Range Acceptable Accuracy Range 0 - 199 mmHg +/−3 mmHg 200 - 300 mmHg +/−4 mmHg

Checking the Accuracy of Pressure Sensor 1

1. Connect the manometer and hand bulb pump to the dummy cuff using the Y-

shape connector and connect the dummy cuff to the instrument with the air

hose as shown below.

2. Touch the “SELECT” key to select item number 1.

3. Touch the “START” key to start the check.

4. Immediately start pumping the hand bulb pump. Stop pumping the hand bulb

pump when the pressure reading displayed on the NIBP Check display of the

instrument is within one of the two pressure ranges. ( 0 - 199 or 200 - 300

mmHg ).

5. Compare the pressure reading displayed on the NIBP Check display with the

pressure reading on the manometer.

6. Repeat steps 4 and 5 for a reading in the other pressure range.

If the accuracy of the pressure sensor for any of the two pressure ranges is out

of the acceptable accuracy range, replace the NIBP Measure board or

pneumatic circuit with a new one.

Service Manual BSM-4100 3.31

3. DIAGNOSTIC CHECK

2. Calibration (2)

The Calibration (2) Check program is not used for calibration but is used to

display the accuracy of the Pressure Sensor 2. The accuracy of the sensor changes

with the measuring pressure. The following table shows the acceptable accuracy

range of the Pressure Sensor 2 at different pressure ranges.

Pressure Range Acceptable Accuracy Range 0 - 15 mmHg −2 mmHg to +3 mmHg 16 - 200 mmHg +/−8 mmHg 201 - 300 mmHg +/−12 mmHg

Checking the Accuracy of Pressure Sensor 2

1. Connect the manometer and hand bulb pump to the dummy cuff using the Y-

shape connector and connect the dummy cuff to the instrument with the air

hose as shown below.

2. Touch the “SELECT” key to select item number 2.

3. Touch the “START” key to start the check.

4. Immediately start pumping the hand bulb pump. Stop pumping the hand bulb

pump when the pressure reading displayed on the NIBP Check display of the

instrument is within one of the three pressure ranges. ( 0 - 15, 16 - 200 or 201 -

300 mmHg).

5. Compare the pressure reading displayed on the NIBP Check display with the

pressure reading on the manometer.

6. Repeat steps 4 and 5 for a reading in the other pressure range.

If the accuracy of the pressure sensor for any of the three pressure ranges is out

of the acceptable accuracy range, replace the NIBP Safety board or pneumatic

circuit with a new one.

3.32 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

3. Safety Check

There are the following 6 check items monitored by the NIBP safety circuit.

Check item Description Range PRESS 1 Pressure limiter in the adult mode 315 +/− 15 mmHg PRESS 2 Pressure limiter in the neonatal mode 157.5 +/− 7.5 mmHg

TIME 1 Time limiter in the adult mode 176 - 180 sec ( >15 mmHg )

TIME 2 Time limiter in the neonatal mode 86 - 90 sec ( >5 mmHg )

TIME 3 Interval error in the adult mode >=10 sec ( >15 mmHg )

TIME 4 Interval error in the neonatal mode >=10 sec ( >5 mmHg )

NOTE

Since the TIME 1 to TIME 4 checks require a pressure generator which

supplies a pressure such as more than 5 mmHg or more than 15 mmHg

during a certain period such as 3 or 1.5 minutes or supplies the

pressure at a certain interval such as 10 seconds, do not perform these

checks locally.

Connect the manometer and hand bulb pump to the dummy cuff using the Y-shape

connector and connect the dummy cuff to the instrument with the air hose as

shown below.

For the PRESS 1, use the YN-901P air hose.

For the PRESS 2, use the YN-921P air hose.

Service Manual BSM-4100 3.33

3. DIAGNOSTIC CHECK

Checking the PRESS 1 Safety Check Item

1. Touch the “SELECT” key to select the item number 3.

2. Touch the “AUTO” key until the key name changes to “PRESS 1” so that the

PRESS 1 Safety Check item is selected.

3. Touch the “START” key to start the check.

4. Start pumping the hand bulb pump as soon as the “CHECK” message appears.

5. Quickly increase the pressure until the manometer reads 300 mmHg. From the

300 mmHg pressure point, slowly increase the pressure further. Check that the

“OK” message appears after the inflated pressure reaches a certain value in the

300 to 330 mmHg range. When the “OK” message appears, the “SAFETY

CIRCUIT ON” message also appears in the cuff pressure window.

NOTE

• If the pressure is raised too quickly to a value above 330 mmHg, the

“ERROR” message appears.

• Slowly increasing the pressure after the 300 mmHg pressure point

triggers the safety circuit to display the “OK” message within 30

seconds. If the pressure is maintained at 300 mmHg, the “OK” or

“ERROR” message appears after 3 minutes because of triggering of a

TIME1 safety event.

If an “ERROR” message appears, replace the NIBP Safety board or pneumatic

circuit with a new one.

3.34 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

Checking the PRESS 2 Safety Check Item

1. Touch the “SELECT” key to select item number 3.

2. Touch the “AUTO” key until the key name changes to “PRESS 2” so that the

PRESS 2 Safety Check item is selected.

3. Touch the “START” key to start the check.

4. Start pumping the hand bulb pump as soon as the “CHECK” message appears.

5. Quickly increase the pressure until the manometer reads 150 mmHg. From the

150 mmHg pressure point, slowly increase the pressure further. Check that the

“OK” message appears after the inflated pressure reaches a certain value in the

150 to 165 mmHg range. When the “OK” message appears, the “SAFETY

CIRCUIT ON” message also appears in the cuff pressure window.

NOTE

• If the pressure is raised too quickly to a value above 165 mmHg, the

“ERROR” message appears.

• Slowly increasing the pressure after the 150 mmHg pressure point

triggers the safety circuit to display the “OK” message within 30

seconds. If the pressure is maintained at 150 mmHg, the “OK” or

“ERROR” message appears after 3 minutes because of triggering of a

TIME1 safety event.

If an “ERROR” message appears, replace the NIBP Safety board or pneumatic

circuit with a new one.

Service Manual BSM-4100 3.35

3. DIAGNOSTIC CHECK

4. Inflation Speed

This is used to check the inflation speed of the pressure pump. The specifications

state that the cuff pressure must be able to reach 250 mmHg in less than 7 seconds.

Checking the Inflation Speed

1. Connect the 700 ml dummy cuff to the instrument with the 3.5 m air hose as

shown below.

2. Touch the “SELECT” key to select item number 4.

3. Touch the “START” key to start the check.

If the inflation speed is less than 7 seconds, an “OK” message appears.

If an “ERROR” message appears, replace the NIBP Safety board or pneumatic

circuit with a new one.

3.36 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

5. Deflation Speed

NOTE

Skip this deflation speed check because it is covered in the “6. Step

Deflation” check.

This is used to check the deflation speed through the two solenoid valves (V1 and

V2) at different stages of pressure drop. An “OK” message is displayed if it takes

1.4 to 3.0 seconds for V1 and 2.5 to 4.3 seconds for V2. If not, an “ERROR”

message is displayed.

Checking the Deflation Speed

1. Connect the 700 ml dummy cuff to the instrument with the 3.5 m air hose as

shown below.

2. Touch the “SELECT” key to select item number 5.

3. Touch the “START” key to start the check.

If an “ERROR” message appears, replace the NIBP Safety board or pneumatic

circuit with a new one.

Service Manual BSM-4100 3.37

3. DIAGNOSTIC CHECK

6. Step Deflation

This checks the step deflation of the cuff at given pressure.

HIGH pressure: Valve 1 opens for 40 ms and Valve 2 opens for 70 ms at 250 mmHg.

The “OK” message appears if the pressure drop is 5 to 20 mmHg.

LOW pressure: Valve 1 opens for 60 ms and Valve 2 opens for 80 ms at 20 mmHg.

The “OK” message appears if the pressure drop is 1 to 10 mmHg.

Checking the Step Deflation

1. Connect the 250 ml dummy cuff to the instrument with the 3.5 m air hose as

shown below.

2. Touch the “SELECT” key to select item number 6.

3. Touch the “START” key to start the check.

If an “ERROR” message appears, replace the NIBP Safety board or pneumatic

circuit with a new one.

3.38 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

7. Air Leak

This checks air leakage in the pneumatic circuit of NIBP module. In this check,

the air pressure of the dummy cuff goes up to 300 mmHg. It then compares the

pressure readings of the dummy cuff taken at 30 seconds and 90 seconds after the

pressure of the dummy cuff had reached 300 mmHg. If the pressure readings differ

by 5 mmHg or less, an “OK” message appears. If not, an “ERROR” message

appears. In this case, make sure that the cuff connector and internal air tubes are

firmly attached. If the “ERROR” message still appears, replace the NIBP Safety

board or pneumatic circuit with a new one.

Checking the Air Leak

1. Connect the 700 ml dummy cuff to the instrument with the 3.5 m air hose as

shown below.

2. Touch the “SELECT” key to select item number 7.

3. Touch the “START” key to start the check.

Service Manual BSM-4100 3.39

3. DIAGNOSTIC CHECK

DPU ROM Check

This item checks the ROMs on the DPU board by the CRC (cyclic redundancy

check) technique. This check assigns a count number when one set of checks is

successfully completed.

If an error message appears, the DPU board will be faulty.

Procedure to Start and Exit the DPU ROM Check Program

1. To select the DPU ROM Check, touch the “ROM CHECK” key at the DPU

CHECK column.

2. The instrument repeats the check and increments the pass count until you

touch the “RETURN” key.

3. If the check program finds an error, it displays the “ERROR” message on the

screen.

4. To return to the MANUAL CHECK MENU screen at any time, touch the

“RETURN” key.

3.40 Service Manual BSM-4100

3. DIAGNOSTIC CHECK

DPU RAM Check

This item checks the RAM on the DPU board by comparing the test patterns (first

written to the RAM) with the test patterns (later read from the RAM).

If an error message appears, the DPU board will be faulty.

Procedure to Start, Stop, and Exit the DPU RAM Check Program

1. To select the DPU RAM Check, touch the “RAM CHECK” key at the DPU

CHECK column. The check program automatically starts.

The “START” key is highlighted to indicate the process of checking.

2. If the check program finds an error, it displays the address, write data and read

data as above table.

3. To stop the check temporarily, touch the “STOP” key. The highlighted

“START” key changes to normal and the “STOP” key is highlighted.

To continue the check, touch the “START” key again.

4. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.

Service Manual BSM-4100 3.41

Nihon Kohden BSM-4100 User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

GENERAL HANDLING PRECAUTIONS

Section 1 General

Introduction

General Information on Servicing

Service Policy, Service Parts and Patient Safety Checks

Composition

Specifications

Names and Function of Parts

Storage and Transport

Hard Keys and Soft Keys

Board/Unit Connection Diagram

Block Diagram

Section 2 Troubleshooting

General

Power-Related Problems

Display Problems

Sound Problems

Key Operation Problems

Recording Problems

ECG and Respiration by Impedance Method Problems

SpO2 Problems

Non-invasive Blood Pressure Problems

Other Vital Sign Input Problems

ECG/BP Output Problems

Option Problems

Section 3 Diagnostic Check

Introduction

Power On Self Check

Calling Up the DIAGNOSTIC CHECK Screen

Calling Up the Error History

Initializing the System

Performing Manual Check and Other Checks