Nihon Kohden BSM-2300 User manual

BSM2301A BSM2301C BSM2301K BSM2303C BSM2303K BSM2304A BSM2351A BSM2351C BSM2351K BSM2353C BSM2353K BSM2354A

WS231P QI231P QI236P

SERVICE MANUAL

BEDSIDE MONITOR

BSM-2300A/C/K

0634-001878G

		CONTENTS
	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, CO2 ..........................................................................................................	1.10
	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
Service Manual BSM-2300		C.1

CONTENTS
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, CO2 ..........................................................................................................	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
SpO2 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, CO2 ........................................................................................................	1.10
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

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, CO2 ........................................................................................................	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

1. GENERAL

Introduction

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.

CAUTION

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.

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 nonabrasive 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

Patient Safety Checks

1. GENERAL

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 CO2
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 FiCO2
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 SpO2
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
SpO2 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% SpO2
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% SpO2
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 CO2 (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, CO2

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

Trend times:

Data sampling time:

Vital Signs List

Parameters:

Number of files in list:

List interval:

1. GENERAL

1, 2, 4, 8, and 24 h

1 min for 1, 2, 4, 8 hours, 3 min for 24 hours

Heart rate (or pulse rate), VPC rate, ST level, NIBP (systolic, diastolic and mean), SpO2, IBP (systolic, diastolic and mean), respiration rate, temperature and ETCO2

Periodic vital signs list:	120
Entries in vital signs list at NIBP measurement: 120
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:

At storage temperature −20 to 60°C:

Environment

Operating environment Temperature: Humidity: Atmospheric pressure:

Storage environment

Temperature:

Humidity:

Atmospheric pressure:

Dimensions and Weight

Dimensions:

Weight:

Electromagnetic Compatibility

about ±2 min 40 s/month maximum about ±5 min/month maximum

10 to 40°C

30 to 90% RH (0 to 40°C, non-condensing) 70 to 106 kPa

−20 to +60°C

−15 to +55°C (Recording paper)

10 to 90% RH (0 to 40°C, non-condensing) 70 to 106 kPa

BSM-2301/2303/2304:	253 W × 242 H ×145 D (mm)
BSM-2351/2353:	293 W × 272 Η × 149 D (mm)
BSM-2301/2303/2304:	approx. 4.7 kg
BSM-2351/2353:	approx. 5 kg

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, CO2:
	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:	CONTINUOUSOPERATION

Service Manual BSM-2300

1.13

1. GENERAL

<BSM-2354A>

Display

Display size:

Waveform display mode:

Viewing area:

Resolution:

Maximum number of waveform trace: Sweep speed:

Sweep width:

Waveform display color:

Numeric display color:

Waveform freeze:

Display waveforms:

Numerical data display:

Synchronization mark:

Sound

Sound type:

Alarm sound:

Synchronization sound:

Alarm

Alarm items:

Alarm levels:

Alarm indication:

Alarm suspend:

Alarm signal delay in CNS network

ECG

Electrode offset potential tolerance: Input dynamic range:

Internal noise:

Common mode rejection ratio: Input impedance

Input bias current:

Heart rate count

Calculation method:

Counting range:

Arrhythmia analysis

Analysis method:

Number of channels:

VPC counting rate:

Arrhythmia message:

10.4 inch, TFT type color LCD Non-fade moving or non-fade fixed 211.2 mm × 158.4 mm

800 × 600 dots

6 traces

25 mm/s, 50 mm/s (Respiration and CO2 low speed: 1.56 mm/s, 6.25 mm/s) about 154 mm at 25 mm/s sweep speed

12

12 Provided

ECG, respiration, IBP, SpO2 pulse wave and CO2

Heart rate, VPC rate, ST level, respiration rate, IBP (systolic, diastolic, mean), NIBP (systolic, diastolic, mean), SpO2, pulse rate, temperature, EtCO2 and FiCO2

Heart rate sync mark, pulse rate sync mark, respiratory sync mark

Alarm, synchronization, click 3 types

Pitch variable for IBP and SpO2

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

Crisis (red blinking), Warning (yellow blinking), Advisory (yellow lighting) Alarm indicator, highlighted message, alarm sound

Provided ≤4 s

±500 mV

± 5 mV

≤30 µVp-p (Refer to input)

≥95 dB

≥5 MΩ (at 10 Hz)

≤100 nA

Moving average/Instantaneous beat to beat (selectable) 0, 12 to 300 beats/min (±2 beats/min)

Template matching method 1 channel

0 to 99 VPCs/min

ASYSTOLE, VT, VF, VPC RUN, COUPLET, EARLY VPC, BIGEMINY, FREQ VPC, TACHYCARDIA,BRADYCARDIA

1.14	Service Manual BSM-2300