Nihon Kohden BSM-2300 User manual

BSM- 2301A BSM- 2301C BSM- 2301K BSM- 2303C BSM- 2303K BSM- 2304A BSM- 2351A BSM- 2351C BSM- 2351K BSM- 2353C BSM- 2353K BSM- 2354A

WS- 231P

QI- 231P QI- 236P

SERVICE MANUAL

BEDSIDE MONITOR

BSM-2300A/C/K

0634-001878G

Contents

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

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

EMC RELATED CAUTION............................................................................................ iii

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

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

Specifications ......................................................................................................................1.6

<BSM-2301/2303/2304/2351/2353> ........................................................................... 1.6

Display .............................................................................................................1.6

Sound ...............................................................................................................1.6

Alarm ............................................................................................................... 1.6

ECG .................................................................................................................1.6

Respiration (Transthoracic impedance pneumography) .....................................1.7

SpO2 on BSM-2301A/C/K, BSM-2303C/K,

BSM-2351A/C/K and BSM-2353C/K ................................................................ 1.8

SpO2 on BSM-2304A........................................................................................1.8

Non Invasive Blood pressure, NIBP ................................................................. 1.8

Temperature .....................................................................................................1.9

Multi-parameter Amplifier ................................................................................. 1.9

Invasive Blood Pressure, IBP ..........................................................................1.9

Respiration (Thermistor method) .................................................................... 1.10

Expired Carbon Dioxide Tension, CO

Trendgraph ..................................................................................................... 1.10

Vital Signs List ............................................................................................... 1.11

Recorder Module (optional, WS-231P) ............................................................1.11

Interface (optional, QI-231P) .......................................................................... 1.11

Interface (optional, QI-236P) .......................................................................... 1.11

External Output ..............................................................................................1.12

Power Requirement ........................................................................................ 1.12

Clock Accuracy.............................................................................................. 1.12

Environment ................................................................................................... 1.12

Dimensions and Weight .................................................................................. 1.12

Electromagnetic Compatibility........................................................................ 1.12

Safety Standard ............................................................................................. 1.12

<BSM-2354A> ......................................................................................................... 1.14

Display ...........................................................................................................1.14

Sound ............................................................................................................. 1.14

Alarm ............................................................................................................. 1.14

..........................................................................................................

1.10

Service Manual BSM-2300 C.1

CONTENTS

ECG ............................................................................................................... 1.14

Respiration (Transthoracic impedance pneumography) ...................................1.15

SpO

.............................................................................................................. 1.16

Non Invasive Blood pressure, NIBP ............................................................... 1.16

Temperature ................................................................................................... 1.16

Multi-parameter Amplifier ...............................................................................1.17

Invasive Blood Pressure, IBP ........................................................................ 1.17

Respiration (Thermistor method) .................................................................... 1.17

Expired Carbon Dioxide Tension, CO

..........................................................................................................

1.17

Trendgraph ..................................................................................................... 1.18

Vital Signs List ............................................................................................... 1.18

Recorder Module (optional, WS-231P) ............................................................1.18

External Output ..............................................................................................1.19

Power Requirement ........................................................................................ 1.19

Clock Accuracy.............................................................................................. 1.19

Environment ................................................................................................... 1.19

Dimensions and Weight .................................................................................. 1.19

Electromagnetic Compatibility........................................................................ 1.19

Safety Standard ............................................................................................. 1.19

Composition ....................................................................................................................... 1.22

Panel Descriptions..............................................................................................................1.24

Front Panel ............................................................................................................... 1.24

Left Side Panel ......................................................................................................... 1.26

BSM-2301A/C/K, BSM-2303C/K, BSM-2351A/C/K and BSM-2353C/K .........1.26

BSM-2304A/2354A ........................................................................................ 1.27

Right Side Panel.......................................................................................................1.28

Storage and Transport ........................................................................................................ 1.29

Storage ..................................................................................................................... 1.29

Transport ..................................................................................................................1.29

Hard Keys and Soft Keys ................................................................................................... 1.29

Hard Keys ................................................................................................................ 1.29

Soft Keys ................................................................................................................. 1.29

Upgrading the System Software and Changing Language on the Screen ........................... 1.30

Procedure ......................................................................................................1.30

Block Diagram .................................................................................................................... 1.31

BSM-2301/2303/2304 ...............................................................................................1.31

BSM-2351/2353/2354 ...............................................................................................1.32

WS-231P Recorder Module ...................................................................................... 1.33

QI-231P Interface .....................................................................................................1.34

QI-236P Interface .....................................................................................................1.35

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

ECG and Respiration by Impedance Method Problems ........................................................2.5

C.2 Service Manual BSM-2300

CONTENTS

SpO

Problems.....................................................................................................................2.6

Non-invasive Blood Pressure Problems ...............................................................................2.7

Temperature Problems..........................................................................................................2.8

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

Option Problems ................................................................................................................ 2.10

Recording Problems ........................................................................................................... 2.11

QI-231P Interface Problems ...............................................................................................2.13

QI-236P Interface 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

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

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

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

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

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

ALARM INDICATOR Check ............................................................................3.15

OTHER Check ............................................................................................... 3.16

MEMORY CARD Check ................................................................................. 3.17

Backlight Check ............................................................................................. 3.18

CRTC Check Menu Items ........................................................................................3.19

GRAPHIC MEMORY Check and CHARACTER MEMORY Check ................. 3.19

GRAPHIC DRAW Check ................................................................................ 3.20

CHARACTER DRAW Check........................................................................... 3.22

IMAGE DRAW Check .................................................................................... 3.24

DPU Check Menu Items........................................................................................... 3.25

D/A ADJUST.................................................................................................. 3.25

AD TEST ........................................................................................................ 3.26

ZB I/F Check ................................................................................................. 3.27

NIBP Check ...................................................................................................3.28

DPU ROM Check ...........................................................................................3.38

DPU RAM Check ........................................................................................... 3.39

Power FREQ ..................................................................................................3.40

APU Check Menu Items........................................................................................... 3.41

APU ROM Check ........................................................................................... 3.41

APU RAM Check ........................................................................................... 3.42

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

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

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

Service Manual BSM-2300 C.3

CONTENTS

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

BATTERY Check ............................................................................................ 3.47

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

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

OUTPUT 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

MAIN Board .........................................................................................................................4.1

Analog Board........................................................................................................................4.5

ECG/RESP Block ...................................................................................................... 4.5

SpO2 and MP Blocks ................................................................................................. 4.6

SpO2 Block.......................................................................................................4.6

MP Block .........................................................................................................4.7

IBP Board ............................................................................................................................4.8

NIBP Board ..........................................................................................................................4.9

Power Supply Block ...........................................................................................................4.10

LCD Unit ............................................................................................................................. 4.11

Recorder Module (Option) ................................................................................................... 4.12

REC MAIN Board ..................................................................................................... 4.12

Recorder Unit ........................................................................................................... 4.13

Interface (Option, QI-231P) ................................................................................................ 4.14

ECG, QRS Synch or Alarm Trigger Signal Output Block ......................................... 4.15

Serial Data Communication Relay Block .................................................................. 4.15

RGB Relay Block .....................................................................................................4.15

Interface (Option, QI-236P) ................................................................................................ 4.16

ECG and QRS Synch Trigger Signal Output Block ...................................................4.17

RGB Relay Block .....................................................................................................4.17

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

Removing the Chassis Block ............................................................................................... 5.1

Replacing the MAIN Board ................................................................................................... 5.6

Replacing the Analog Board ............................................................................................... 5.10

Replacing the NIBP Board .................................................................................................. 5.12

Replacing the IBP Board .................................................................................................... 5.14

Replacing the Inverter Board (BSM-2301/2303/2304) .........................................................5.15

Replacing the Inverter Board and Inverter IF Board (BSM-2351/2353/2354) ......................5.17

Replacing the LCD Unit (BSM-2301/2303/2304) ................................................................. 5.19

Replacing the LCD Unit (BSM-2351/2353/2354) ................................................................. 5.21

Replacing the LCD IF Board (BSM-2351/2353/2354) .......................................................... 5.23

Replacing the Backlight Lamp Unit (BSM-2301/2303/2304) ................................................ 5.24

Replacing the Backlight Lamp (BSM-2351/2353/2354) ....................................................... 5.26

Replacing the Lithium Battery ............................................................................................ 5.28

C.4 Service Manual BSM-2300

CONTENTS

Replacing the Battery Pack ................................................................................................ 5.29

When the Recorder Module is Not Attached to the Instrument ................................. 5.29

When the Recorder Module is Attached to the Instrument .......................................5.31

Replacing the IO ANALOG OUT or IO CT OUT Board of the Optional Interface ................ 5.33

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

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

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

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

Maintenance Check Items and Schedule ............................................................................. 6.3

External ...................................................................................................................... 6.3

Input Conditions ......................................................................................................... 6.3

Operation ................................................................................................................... 6.4

Display .......................................................................................................................6.4

Recorder ..................................................................................................................... 6.4

Interface ..................................................................................................................... 6.5

Vital Sign Parameters.................................................................................................6.5

Power ......................................................................................................................... 6.6

Data Backup .............................................................................................................. 6.6

Safety ........................................................................................................................ 6.7

Others ........................................................................................................................ 6.7

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

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

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

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

Bedside Monitor BSM-2301/2303/2304 ................................................................................8.2

Bedside Monitor BSM-2351/2353/2354 ................................................................................8.8

Optional Recorder Module WS-231P .................................................................................. 8.14

RG-922P Recorder Unit ...................................................................................................... 8.16

QI-231P Interface ............................................................................................................... 8.18

QI-236P Interface ............................................................................................................... 8.19

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

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

CN0201 (for Alarm Indicator board) .................................................................. 9.1

CN0202 (for CN101 on Operation board) .......................................................... 9.1

CN0204 (for CN001 on REC MAIN board of optional recorder module).............9.2

CN0205 (for CN002 on REC MAIN board of optional recorder module).............9.3

CN401 (for power supply unit) .......................................................................... 9.3

CN0601 (for program card or network card) ...................................................... 9.4

CN0701 (for touch screen) ............................................................................... 9.5

CN0801 (AUX socket) ......................................................................................9.5

CN0802 (for Inverter board)..............................................................................9.6

Service Manual BSM-2300 C.5

CONTENTS

CN1001 (for LCD unit) ...................................................................................... 9.7

CN1401 (for rechargeable battery pack) ........................................................... 9.8

CN1501 (for CN901 on Analog board) ............................................................... 9.8

CN1502 (for CN0101 on NIBP board) ............................................................... 9.9

Alarm Indicator Board ......................................................................................................... 9.10

CN0101 (for CN0201 on MAIN board) ............................................................. 9.10

Analog Board...................................................................................................................... 9.11

CN502 ............................................................................................................ 9.11

CN601 (for CN001 on IBP board) ................................................................... 9.11

CN602 ............................................................................................................ 9.12

CN901 (for CN1501 on MAIN board) .............................................................. 9.12

CN902 (for ZB-900P transmitter) ....................................................................9.12

NIBP Board ........................................................................................................................ 9.13

CN0101 (for CN1502 on MAIN board) ............................................................. 9.13

CN0102 (for Hall Sensor board) ......................................................................9.13

CN0103 (for line frequency detection coil wire) ..............................................9.13

CN0104 (for pediatric valve) ...........................................................................9.13

CN0105 (for safety circiut valve) .................................................................... 9.13

CN0106 (for pump) ......................................................................................... 9.14

CN0107 (for speaker) ..................................................................................... 9.14

CN0108 (for adult valve) ................................................................................. 9.14

IBP Board .......................................................................................................................... 9.14

CN001 (for CN601 on Analog board) .............................................................. 9.14

Operation Board ................................................................................................................. 9.15

CN101 (for CN0202 on MAIN board) .............................................................. 9.15

CN102 (for CN103 on Power SW board) ......................................................... 9.15

Power SW Board ................................................................................................................ 9.16

CN0103 (for CN102 on Operation board) ........................................................ 9.16

Inverter Board .................................................................................................................... 9.16

CN1 (for CN0802 on MAIN board) .................................................................. 9.16

CN2 (for backlight) ......................................................................................... 9.16

Inverter IF Board (for BSM-2351/2353/2354 only) .............................................................. 9.17

CN101 (for inverter board) .............................................................................. 9.17

CN102 and CN103 (for backlight lamp) .......................................................... 9.17

LCD IF Board (for BSM-2351/2353/2354 only) ................................................................... 9.18

CN101 (for MAIN board) ................................................................................. 9.18

CN102 (for LCD unit) ...................................................................................... 9.19

Hall Sensor Board .............................................................................................................. 9.20

CN101 (for CN102 on NIBP board) ................................................................. 9.20

REC MAIN Board ............................................................................................................... 9.20

CN001 (for CN0204 on MAIN board) .............................................................. 9.20

CN002 (for CN0205 on MAIN board) .............................................................. 9.20

CN003 (for CN103 on REC Power board)........................................................ 9.20

REC Key Board .................................................................................................................. 9.21

CN201 (for CN104 on REC Power board)........................................................ 9.21

REC Power Board...............................................................................................................9.21

CN101 (for recorder unit) ................................................................................ 9.21

CN102 (for recorder unit) ................................................................................ 9.22

CN103 (for CN003 on REC MAIN board) ........................................................ 9.22

CN104 (for CN201 on REC Key board) ........................................................... 9.22

C.6 Service Manual BSM-2300

CONTENTS

IO ANALOG OUT Board ..................................................................................................... 9.23

CN001 ............................................................................................................ 9.23

CN002 ............................................................................................................ 9.23

CN005 ............................................................................................................ 9.23

CN003 ............................................................................................................ 9.24

CN004 ............................................................................................................ 9.24

IO CT OUT Board ............................................................................................................... 9.25

CN002 ............................................................................................................ 9.25

CN003 ............................................................................................................ 9.25

Service Manual BSM-2300 C.7

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, extreme atmospheric pressure, excessive humidity and temperatures, poorly

ventilated areas, and dust, 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 combined 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-2300 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 physician.

ii Service Manual BSM-2300

EMC RELATED CAUTION

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

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

exceeds the limits or levels stipulated in 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. Keep the emitter source such as cellular phone

away from the equipment and/or system, or turn off the cellular phone.

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.

5. Interference of lightning

When lightning occurs near the location where the equipment and/or system is installed, it may induce

an excessive voltage in the equipment and/or system. In such a case, disconnect the AC power cord

from the equipment and/or system and operate the equipment and/or system by battery power, or use an

uninterruptible power supply.

6. Use with other equipment

When the equipment and/or system is adjacent to or stacked with other equipment, the equipment and/

or system may affect the other equipment. Before use, check that the equipment and/or system operates

normally with the other equipment.

7. Use of unspecified accessory, transducer and/or cable

When an unspecified accessory, transducer and/or cable is connected to this equipment and/or system,

it may cause increased electromagnetic emission or decreased electromagnetic immunity. The specified

configuration of this equipment and/or system complies with the electromagnetic requirements with the

specified configuration. Only use this equipment and/or system with the specified configuration.

Service Manual BSM-2300 iii

Caution - continued

8. Use of unspecified configuration

When the equipment and/or system is used with the unspecified system configuration different than the

configuration of EMC testing, it may cause increased electromagnetic emission or decreased

electromagnetic immunity. Only use this equipment and/or system with the specified configuration.

9. Measurement with excessive sensitivity

The equipment and/or system is designed to measure bioelectrical signals with a specified sensitivity. If

the equipment and/or system is used with excessive sensitivity, artifact may appear by electromagnetic

interference and this may cause mis-diagnosis. When unexpected artifact appears, inspect the

surrounding electromagnetic conditions and remove this artifact source.

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

representative 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-2300K bedside monitor.

NOTE about Waste Electrical and Electronic Equipment (WEEE) directive 2002/96/EEC

For the member states of the European Union only:

The purpose of WEEE directive 2002/96/EEC is, as a first priority, the prevention of waste electrical and

electronic equipment (WEEE), and in addition, the reuse, recycling and other forms of recovery of such

wastes so as to reduce the disposal of waste.

Contact your Nihon Kohden representative for disposal at the end of its working life.

iv Service Manual BSM-2300

When measuring SpO2, various interference may produce false waveforms which look like pulse waveforms.

SpO2 value and pulse rate may be measured from these false waveforms, causing the alarm to function

improperly.

When installing the monitor, avoid locations where the monitor may receive strong electromagnetic

interference such as radio or TV stations, cellular phone or mobile two-way radios.

WARNING

Interaction Between Minute Ventilation Rate-Adaptive Pacemakers and Cardiac Monitoring and Diagnostic

Equipment*

The bioelectric impedance measurement sensor of a minute ventilation rate-adaptive implantable pacemaker

may be affected by cardiac monitoring and diagnostic equipment which is connected to the same patient. If

this occurs, the pacemaker may pace at its maximum rate and give incorrect data to the monitor or

diagnostic equipment. If this occurs, disconnect the monitor or diagnostic equipment from the patient or

change the setting on the pacemaker by referring to the pacemaker’s manual. For more details, contact your

pacemaker distributor or Nihon Kohden distributor.

* Minute ventilation is sensed in rate-adaptive pacemakers by a technology known as bioelectric impedance measurement

(BIM). Many medical devices in addition to pacemakers use this technology. When one of these devices is used on a

patient with an active, minute ventilation rate-adaptive pacemaker, the pacemaker may erroneously interpret the mixture

of BIM signals created in the patient, resulting in an elevated pacing rate.

For more information, see the FDA web site.

http://www.fda.gov/cdrh/safety.html

Service Manual BSM-2300 v

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 the 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.

vi Service Manual BSM-2300

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

Specifications .....................................................................................................................1.6

<BSM-2301/2303/2304/2351/2353> .......................................................................... 1.6

Display ............................................................................................................1.6

Sound ..............................................................................................................1.6

Alarm .............................................................................................................. 1.6

ECG ................................................................................................................1.6

Respiration (Transthoracic impedance pneumography) ....................................1.7

SpO2 on BSM-2301A/C/K, BSM-2303C/K,

BSM-2351A/C/K and BSM-2353C/K ............................................................... 1.8

SpO2 on BSM-2304A.......................................................................................1.8

Non Invasive Blood pressure, NIBP ................................................................ 1.8

Temperature ....................................................................................................1.9

Multi-parameter Amplifier ................................................................................ 1.9

Invasive Blood Pressure, IBP .........................................................................1.9

Respiration (Thermistor method) ................................................................... 1.10

Expired Carbon Dioxide Tension, CO

Trendgraph .................................................................................................... 1.10

Vital Signs List .............................................................................................. 1.11

Recorder Module (optional, WS-231P) ...........................................................1.11

Interface (optional, QI-231P) ......................................................................... 1.11

Interface (optional, QI-236P) ......................................................................... 1.11

External Output .............................................................................................1.12

Power Requirement ....................................................................................... 1.12

Clock Accuracy.............................................................................................1.12

Environment .................................................................................................. 1.12

Dimensions and Weight ................................................................................. 1.12

Electromagnetic Compatibility....................................................................... 1.12

Safety Standard ............................................................................................ 1.12

........................................................................................................

1.10

Service Manual BSM-2300 1C.1

<BSM-2354A> ........................................................................................................ 1.14

Display ..........................................................................................................1.14

Sound ............................................................................................................ 1.14

Alarm ............................................................................................................ 1.14

ECG ..............................................................................................................1.14

Respiration (Transthoracic impedance pneumography) ..................................1.15

SpO2............................................................................................................. 1.16

Non Invasive Blood pressure, NIBP .............................................................. 1.16

Temperature .................................................................................................. 1.16

Multi-parameter Amplifier ..............................................................................1.17

Invasive Blood Pressure, IBP ....................................................................... 1.17

Respiration (Thermistor method) ................................................................... 1.17

Expired Carbon Dioxide Tension, CO

........................................................................................................

1.17

Trendgraph .................................................................................................... 1.18

Vital Signs List .............................................................................................. 1.18

Recorder Module (optional, WS-231P) ...........................................................1.18

External Output .............................................................................................1.19

Power Requirement ....................................................................................... 1.19

Clock Accuracy............................................................................................. 1.19

Environment .................................................................................................. 1.19

Dimensions and Weight ................................................................................. 1.19

Electromagnetic Compatibility....................................................................... 1.19

Safety Standard ............................................................................................ 1.19

Composition ...................................................................................................................... 1.22

Panel Descriptions.............................................................................................................1.24

Front Panel .............................................................................................................. 1.24

Left Side Panel ........................................................................................................ 1.26

BSM-2301A/C/K, BSM-2303C/K, BSM-2351A/C/K and BSM-2353C/K ........1.26

BSM-2304A/2354A ....................................................................................... 1.27

Right Side Panel...................................................................................................... 1.28

Storage and Transport ....................................................................................................... 1.29

Storage .................................................................................................................... 1.29

Transport .................................................................................................................1.29

Hard Keys and Soft Keys .................................................................................................. 1.29

Hard Keys ............................................................................................................... 1.29

Soft Keys ................................................................................................................ 1.29

Upgrading the System Software and Changing Language on the Screen .......................... 1.30

Procedure .....................................................................................................1.30

Block Diagram ................................................................................................................... 1.31

BSM-2301/2303/2304 ..............................................................................................1.31

BSM-2351/2353/2354 ..............................................................................................1.32

WS-231P Recorder Module ..................................................................................... 1.33

QI-231P Interface ....................................................................................................1.34

QI-236P Interface ....................................................................................................1.35

1C.2 Service Manual BSM-2300

Introduction

1. GENERAL

This service manual provides useful information to qualified personnel to

understand, troubleshoot, service, maintain and repair the BSM-2300 bedside

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

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

illustration 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-2300 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 inside the lithium battery could flow out or a toxic substance

inside it could come 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, verify that there is nothing

wrong with the patient safety checks and function/performance checks.

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

Kohden representative to 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 alkyldiaminoethylglycine: 0.5%

1.2 Service Manual BSM-2300

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 into the inside of the instrument.

••

• When transporting the 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 use a styrene foam or plastic bag which

generates static electricity to wrap the board or unit of the

instrument.

Handling the Instrument

••

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

••

outside surface of the instrument is easily damaged. So when

handling the instrument, remove clutter from around the instrument

and be careful to not damage the instrument or get it dirty.

••

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

••

with surface mounted electrical devices (SMD), when removing and

soldering the electrical devices, a special tool is required. 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-2300 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 or high degree of 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-2300

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, IEC 60601-1:1988 :

• Protective earth resistance check

• Earth leakage current check

• Enclosure leakage current check

• Patient leakage current check

• Withstanding voltage check

Service Manual BSM-2300 1.5

1. GENERAL

Specifications

<BSM-2301/2303/2304/2351/2353>

Display

Display size: BSM-2301/2303/2304: 8.4 inch, TFT type color LCD

BSM-2351/2353: 10.4 inch, TFT type color LCD

Waveform display mode: Non-fade moving or non-fade fixed Viewing area: BSM-2301/2303/2304: 170.4 mm × 127.8 mm

BSM-2351/2353: 211.2 mm × 158.4 mm

Resolution: 800 × 600 dots

Maximum number of waveform trace: BSM-2301/2351: 5 traces

BSM-2303/2304/2353: 6 traces

Sweep speed: 25 mm/s, 50 mm/s (Respiration and CO2 low speed: 1.56 mm/s, 6.25 mm/s)

Sweep width: BSM-2301/2303/2304: about 124 mm at 25 mm/s sweep speed

BSM-2351/2353: about 154 mm 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 and CO

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

(systolic, diastolic, mean), SpO2, pulse rate, temperature, ETCO2 and FiCO

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, pulse waveform detecting alarm, probe off

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

environment alarm

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

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: ≤30 µVp-p (Refer to input) Common mode rejection ratio: ≥95 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)

1.6 Service Manual BSM-2300

1. GENERAL

Arrhythmia analysis

Analysis method: Template matching method

Number of channels: 1 channel

VPC counting rate: 0 to 99 VPCs/min

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

TACHYCARDIA, BRADYCARDIA

Arrhythmia recall:

Number of recall files: 16

Storage time per file: 8 s

ST level measurement:

Number of measurement channels:1 ch

Measuring range: ±2.5 mV

Alarm limits: ±2.0 mV in 0.01 mV steps, OFF

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 Filters ON: Time constant 0.5 s, AC hum filter 0.3 to 23 Hz (> −3 dB), ≤ −16 dB (50 Hz or

60 Hz)

OFF: Time constant 3.2 s, 0.05 to 150 Hz (> −3 dB)

Lead:

3-electrode cable: I, II, III

6-electrode cable: I, II, III, aVR, aVL, aVF, V4, V5

Waveform display:

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

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

Respiration (Transthoracic impedance pneumography)

Measuring lead: R-F or R-L Measuring impedance available range: 0 to 2 kΩ Internal noise: ≤0.2 Ω (Refer to input) Excitor current: 30 ±10 µArms at 40 kHz Frequency response: 3.0 Hz ±1 Hz (−3 dB) (Hardware specification)

Time constant: 1.5 s ±0.5 s (Hardware specification)

Respiration counter counting range: 0 to 150 breaths/min

Respiration rate counting accuracy: ±2 breaths/min

Defibrillation proof: Respiration input protected against 400 J discharge

Waveform display:

Display sensitivity: 10 mm/Ω ±20% (at ×1 sensitivity, Zo=480 Ω) Sensitivity control: ×1/4, ×1/2, ×1, ×2, ×4

Service Manual BSM-2300 1.7

1. GENERAL

Measurement On/Off: Available

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

SpO

on BSM-2301A/C/K, BSM-2303C/K, BSM-2351A/C/K and BSM-2353C/K

Measuring range: 1 to 100%

Pulse rate counting range: 0, 30 to 300 beats/min

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

±3 digits (70% ≤ 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 or AUTO

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-2304A

Measuring range: 1 to 100%

Pulse rate counting range: 0, 20 to 250 beats/min

SpO2 accuracy: Adult: ±2 digits (70% ≤ SpO2 ≤ 100%)

Neonate: ±3 digits (70% ≤ SpO2 < 100%)

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 or AUTO

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

Measuring range: 0 to 300 mmHg Accuracy: ±3 mmHg (0 mmHg ≤ NIBP ≤ 200 mmHg)

±4 mmHg (200 mmHg ≤ NIBP ≤ 300 mmHg)

Cuff inflation time: Adult: 7 s

Neonate: 5 s

Initial cuff inflation pressure: Adult: 180 mmHg

Neonate: 100 mmHg

Safety:

Cuff inflation maximum pressure: Adult 300 mmHg

Neonate 150 mmHg

Safety cuff inflation limiter: Adult 330 mmHg

Neonate 165 mmHg

Cuff inflation time limiter: Adult ≤180 s

Neonates ≤90 s

1.8 Service Manual BSM-2300

1. GENERAL

Measurement mode: Manual

STAT (Continuous)

Periodic: 2, 2.5, 5, 10, 15, 30 min, 1, 2, 4, 8 hr interval, PWTT (PWTT is not

available on the BSM-2304A monitor)

NIBP data display update cycle: Updated every measurement

Measurement completion sound: Generated at every measurement completion when set on the SYSTEM SETUP

screen

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

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 113°F)

Display update cycle: Every 3 s or when alarm is generated

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

Multi-parameter Amplifier

Measuring parameters: IBP, respiration (thermistor method), and CO

(mainstream)

Input impedance: 1 MΩ ±10% Excitor output impedance: < 2 Ω

Excitor current limiter: < 100 mA

Maximum current from +5 V DC connector: < 100 mA

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/°C

Frequency response: DC to 20 Hz ±3Hz

DC to 12 Hz ±3Hz

Display update cycle: Every 3 s 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

Service Manual BSM-2300 1.9

1. GENERAL

Respiration (Thermistor method)

Respiration rate counting range: 0 to 150 breaths/min

Apnea, 5 to 40 s

Accuracy: ±2 breaths/min Noise: Within 20 Ω (Refer to input) Frequency response: 3.0 Hz (−3 dB) Time constant: ≥1.5 s

Waveform display

Display sensitivity: 10 mm/100 Ω ±20% (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 breaths/min

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

Expired Carbon Dioxide Tension, CO

For the TG-900P/TG-920P/TG-950P CO2 sensor kit specifications, refer to the kit manual.

Measuring method: Mainstream (TG-900P/TG-920P: semi-quantitative, TG-950P: quantitative)

Measuring range:

TG-900P/TG-920P: 0 to 76 mmHg

TG-950P: 0 to 99 mmHg

Warm-up time: 5 s (minimum)

Response time

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

TG-920P: 120 ms (typical) for steps from 10 to 90%

TG-950P: 60 ms (typical) for steps from 10 to 90%, delay time 100 ms ±10 ms

Detectable respiration rate

TG-900P: 3 to 60 breaths/min

TG-920P: 3 to 150 breaths/min

TG-950P: 0 to 150 breaths/min

Respiration rate counting accuracy: ±2 breaths/min

Measuring accuracy:

TG-900P/TG-920P: ±4 mmHg (0 ≤ CO2 ≤ 40 mmHg)

±10% reading (40 < CO2 ≤ 76 mmHg)

(When 1 atmospheric pressure, N2O ≤ 70 %, no condensation)

TG-950P: ±2 mmHg (0 ≤ CO2 ≤ 40 mmHg)

±5% reading (40 < CO2 ≤ 70 mmHg)

±7% reading (70 < CO2 ≤ 100 mmHg)

(When no condensation, N2O ≤ 70 %)

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

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 (arrhythmia),

apnea (time), apnea (frequency), SpO2, NIBP (systolic, diastolic and mean), IBP

(systolic, diastolic and mean), temperature, ETCO2 and PWTT

1.10 Service Manual BSM-2300

1. GENERAL

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

Data sampling time: 1 min for 1, 2, 4, 8 hours, 3 min for 24 hours

Vital Signs List

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

SpO

, IBP (systolic, diastolic and mean), respiration rate, temperature and ETCO

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

Recorder Module (optional, WS-231P)

Recording method: Thermal array recording

Number of channels: 3 traces (maximum) Recording width: ≥46 mm

Paper speed: 25, 50 mm/s

Recording paper: FQW50-3-100

Resolution: Amplitude direction of waveforms: 8 dots/mm

Time direction of waveforms: 40 lines/mm

8 lines/mm (graphic recording)

Dimensions: 212 W × 90 H × 140 D (mm)

Weight: 1.5 kg

Interface (optional, QI-231P)

ECG analog output

Output voltage: within ±5 V

Sensitivity: 1 V/1 mV ±5% Frequency: low 0.6 Hz ±0.1 Hz (−3 dB)

high 23 Hz ±3 Hz (−3 dB)

Delay time: within 20 ms

Trigger output

Output format: open collector

External application signal: voltage +5 to +15 V

current 500 µA to 100 mA

QRS sync delay time: within 100 ms

Interface (optional, QI-236P)

ECG analog output

Output voltage: within ±5 V

Sensitivity: 1 V/1 mV ±5% Frequency: low 0.6 Hz ±0.1 Hz (−3 dB)

high 23 Hz ±3 Hz (−3 dB)

Delay time: within 20 ms

Trigger output

Output format: TTL compatible

QRS sync delay time: within 20 ms

Service Manual BSM-2300 1.11

1. GENERAL

External Output

ZB-900PK: Provided

External monitor: Provided

Power Requirement

Line voltage: BSM-2301A/2304A/2351A: 117 V ±10% AC

BSM-2301C/K, BSM-2303C/K

BSM-2351C/K, BSM-2353C/K: 100 to 240 V ±10% AC

Line frequency: 50 or 60 Hz ±2%

Battery pack (option): 10.8 to 15.0 V ±5%

Power consumption: AC operation: BSM-2301A/2304A: 70 VA maximum

BSM-2301C/K, BSM-2303C/K: 86 VA maximum

BSM-2351A: 80 VA maximum

BSM-2351C/K, BSM-2353C/K: 95 VA maximum

Battery operation: 40 W maximum

Clock Accuracy

At operating temperature 25°C: about ±2 min 40 s/month maximum At storage temperature −20 to 60°C: about ±5 min/month maximum

Environment

Operating environment

Temperature: 10 to 40°C

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

Atmospheric pressure: 70 to 106 kPa

Storage environment

Temperature: −20 to +60°C

−15 to +55°C (Recording paper)

Humidity: 10 to 90% RH (0 to 40°C, non-condensing)

Atmospheric pressure: 70 to 106 kPa

Dimensions and Weight

Dimensions: BSM-2301/2303/2304: 253 W × 242 H ×145 D (mm)

BSM-2351/2353: 293 W × 272 Η × 149 D (mm)

Weight: BSM-2301/2303/2304: approx. 4.7 kg

BSM-2351/2353: approx. 5 kg

Electromagnetic Compatibility

IEC 60601-1-2:1993 – Collateral Standard: Electromagnetic compatibility – Requirement and tests

Emissions: CISPR11 Group 1, Class B

1.12 Service Manual BSM-2300

1. GENERAL

Safety Standard

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

IEC 60601-1-1 Amendment 1:1995

IEC 60601-2-27:1994 - Particular requirements for the safety of

electrocardiographic monitoring

IEC 60601-2-34:1994 - Particular requirements for the safety of direct blood

pressure monitoring equipment

IEC 60601-2-30:1995 - Particular requirements for the safety of automatic cycling

in 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)

According to the degree of protection against electrical shock

ECG, Respiration (impedance), Respiration (thermistor), IBP, Temperature, CO

Defibrillator-proof type CF applied part

SpO2, NIBP: Defibrillator-proof type BF applied part

For BSM-2301, depending on the serial number, the degree of protection against electrical shock for the specified

parameters may be as follows.

Temperature: CF applied part SpO2, Respiration (thermistor), CO2: 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-2300 1.13

1. GENERAL

<BSM-2354A>

Display

Display size: 10.4 inch, TFT type color LCD

Waveform display mode: Non-fade moving or non-fade fixed Viewing area: 211.2 mm × 158.4 mm Resolution: 800 × 600 dots

Maximum number of waveform trace: 6 traces

Sweep speed: 25 mm/s, 50 mm/s (Respiration and CO2 low speed: 1.56 mm/s, 6.25 mm/s)

Sweep width: about 154 mm 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 and CO

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

(systolic, diastolic, mean), SpO2, pulse rate, temperature, EtCO2 and FiCO

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, pulse waveform detecting alarm, probe off

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

environment alarm

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

Alarm indication: Alarm indicator, highlighted message, alarm sound

Alarm suspend: Provided Alarm signal delay in CNS network ≤4 s

ECG

Electrode offset potential tolerance: ±500 mV

Input dynamic range: ± 5 mV Internal noise: ≤30 µVp-p (Refer to input) Common mode rejection ratio: ≥95 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

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

TACHYCARDIA, BRADYCARDIA

1.14 Service Manual BSM-2300

+ 210 hidden pages