Nihon-Kohden EEG-9100, EEG-9200 Service manual

EEG-9100A

EEG-9100J

EEG-9100K

EEG-9100G

EEG-9200A

EEG-9200J

EEG-9200K

EEG-9200G

ELECTROENCEPHALOGRAPH

Neurofax Neurofax

EEG-9100

EEG-9200

0634-001584C

CONTENTS

Contents

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

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

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

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

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

Precautions for Input Jack Use .................................................................................... ix

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

Maintenance Equipments/Tools .................................................................................. 1.5

General Safety Information .................................................................................................. 1.6

Specifications .................................................................................................................... 1.15

Panel Descriptions.............................................................................................................. 1.19

Component Example ................................................................................................ 1.19

EEG-9100A/J/K/G.......................................................................................... 1.19

EEG-9200A/J/K/G.......................................................................................... 1.19

CC-901AK PC Unit (EEG-9100A/J/K/G) ................................................................... 1.20

CC-902AK PC Unit (EEG-9200A/J/K/G) ................................................................... 1.21

SC-901A/AK/AG Power Supply Unit (for EEG-9200A/J/K/G only)............................ 1.22

SM-930AA/AJ/AK Isolation Unit (for EEG-9200A/J/K/G only) ................................. 1.22

JE-910A/AG, JE-911A/AG (Option) Electrode Junction Box ....................................1.23

JE-913A/AG Mini Junction Box (Option) .................................................................. 1.24

LS-901AJ/AK/AG Photo Control Unit (Option) .......................................................... 1.25

Composition ....................................................................................................................... 1.26

EEG-9100A/J/K/G .................................................................................................... 1.26

Standard Components ....................................................................................1.26

Options .......................................................................................................... 1.26

EEG-9200A/J/K/G .................................................................................................... 1.28

Standard Components ....................................................................................1.28

Options .......................................................................................................... 1.28

Connection Diagram ...........................................................................................................1.30

EEG-9100A/J/K/G .................................................................................................... 1.30

EEG-9200A/J/K/G .................................................................................................... 1.31

Section 2 Changing Settings ............................................................... 2C.1

PC Unit Settings .................................................................................................................. 2.1

E11CFG.ini Configuration File ....................................................................................2.1

Opening the Configuration Settings File Editor Window .................................... 2.1

Service Manual EEG-9100/9200 C.1

CONTENTS

Configuration File List and Settings ..................................................................2.3

Changing the MO User Label When Installing Two or More Instruments in an Area or

Connecting the Instrument to a Network ............................................................................. 2.15

General ..................................................................................................................... 2.15

Procedure................................................................................................................. 2.15

Section 3 Troubleshooting and Error Messages ............................... 3C.1

How to Troubleshoot ............................................................................................................. 3.1

Closing the Program and Shutting Down Windows ...........................................3.2

Troubleshooting .................................................................................................................... 3.3

Waveform Acquisition ................................................................................................. 3.3

Skin-electrode Impedance Check ............................................................................... 3.6

Control ........................................................................................................................ 3.7

Activation ................................................................................................................. 3.10

Power ....................................................................................................................... 3.11

Printer ...................................................................................................................... 3.11

MO Disk Drive.......................................................................................................... 3.12

CD-RW Drive (EEG-9200 Only) ................................................................................ 3.13

Error Messages .................................................................................................................. 3.14

Acquisition Program/Review Program ......................................................................3.14

File Utility Program ................................................................................................... 3.18

System Program ...................................................................................................... 3.19

Open File Dialog Box ............................................................................................... 3.20

Section 4 Board Description ................................................................ 4C.1

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

Signal Flow .......................................................................................................................... 4.3

Electrode Junction Box ........................................................................................................ 4.4

EEG INPUT board ...................................................................................................... 4.6

EEG AMP board ........................................................................................................ 4.6

EEG MOTHER Board ................................................................................................. 4.9

Power Supply Unit, SC-901A/AK/AG (for EEG-9100A/J/K/G only) ..................................... 4.10

Isolation Unit, SM-930AA/AJ/AK (for EEG-9200A/J/K/G only)........................................... 4.10

Photo Control Unit .............................................................................................................. 4.11

PHOTO STIM Board .................................................................................................4.12

SWITCH Board ........................................................................................................ 4.13

Section 5 Disassembly ......................................................................... 5C.1

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

Warnings, Cautions and Notes ................................................................................... 5.1

Required Tools ............................................................................................................ 5.2

Electrode Junction Box ........................................................................................................ 5.3

Photo Control Unit ................................................................................................................ 5.6

Removing the Top Cover and Bottom Cover ...............................................................5.7

Removing the PHOTO STIM Board ............................................................................ 5.8

Removing the SWITCH Board .................................................................................... 5.9

C.2 Service Manual EEG-9100/9200

CONTENTS

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

Checking the Electrode Junction Box ................................................................................... 6.1

Checking Noise ..........................................................................................................6.1

Required Parts ................................................................................................. 6.1

Checking the Skin-electrode Impedance Check Function .......................................... 6.2

Required Parts ................................................................................................. 6.2

Checking the EEG Input Circuit ................................................................................. 6.3

Required Parts ................................................................................................. 6.3

Checking the Power Supplies ...............................................................................................6.4

Checking the AC Power Voltage Output from the Power Supply Unit (EEG-9100) ...... 6.4

Checking the AC Power Voltage Output from the Isolation Unit (EEG-9200) ..............6.4

Checking the Power on the Photo Control Unit ...........................................................6.5

PHOTIC LAMP Connector ................................................................................ 6.5

Adjusting the Pacing Sound ................................................................................................. 6.6

Checking for Disk Damage Using Check Disk ..................................................................... 6.7

Magneto-Optical Disk ...........................................................................................................6.8

Checking for Disk Damage Using Scan Disk (EEG-9200 Only) ........................................... 6.9

Writing Down the File and MO Data Before PC Unit or Hard Disk Replacement ................. 6.11

General ..................................................................................................................... 6.11

Procedure................................................................................................................. 6.12

Explanation of Each Setting ..................................................................................... 6.13

Country .......................................................................................................... 6.13

Serial Number ................................................................................................ 6.13

File Number ................................................................................................... 6.14

Fixed tag ........................................................................................................ 6.14

MO User Label ............................................................................................... 6.14

Volume Number ..............................................................................................6.15

Installing the EEG-9000 System Program ..........................................................................6.16

General ..................................................................................................................... 6.16

Caution - Before Installation ...........................................................................6.16

Procedure - EEG-9100 ............................................................................................. 6.17

Installation Flowchart ..................................................................................... 6.17

Step 1 - Installing Windows 2000 Professional ............................................... 6.18

Step 2 - Changing the Screen Resolution ....................................................... 6.20

Step 3 - Turning the Display’s Energy-Saving Feature Off .............................. 6.20

Step 4 - Changing the Visual Effects ............................................................. 6.20

Step 5 - Changing the Hardware Profiles ........................................................ 6.21

Step 6 - Changing the Workgroup Setting ....................................................... 6.21

Step 7 - Checking the IDE Disk Setting ......................................................... 6.21

Step 8 - Changing the Sound Device Setting ................................................. 6.22

Step 9 - Changing the Folder Option Settings ................................................ 6.22

Step 10 - Installing the EEG-9000 System Program ...................................... 6.23

Step 11 - Making the EEG-9000 Shortcut Icon on the Desktop ..................... 6.23

Step 12 - Changing the USB Buffer Size in the Configuration File ................. 6.23

Step 13 - Installing the Electrode Junction Box Driver ................................... 6.24

Step 14 - Changing the Drive Letter ............................................................... 6.26

Procedure - EEG-9200 ............................................................................................. 6.27

Installation Flowchart ..................................................................................... 6.27

Step 1 - Installing Windows 2000 Professional ............................................... 6.28

Service Manual EEG-9100/9200 C.3

CONTENTS

Step 2 - Upgrading the Device Drivers ........................................................... 6.30

Step 3 - Changing the Screen Resolution ....................................................... 6.36

Step 4 - Turning the Display’s Energy-Saving Feature Off .............................. 6.36

Step 5 - Changing the Visual Effects ............................................................. 6.36

Step 6 - Changing the Hardware Profiles ........................................................ 6.37

Step 7 - Changing the Workgroup Setting ....................................................... 6.37

Step 8 - Changing the Folder Option Settings ................................................ 6.37

Step 9 - Installing the EEG-9000 System Program ........................................6.38

Step 10 - Making the EEG-9000 Shortcut Icon on the Desktop ..................... 6.38

Step 11 - Changing the USB Buffer Size in the Configuration File ................. 6.38

Step 12 - Installing the Electrode Junction Box Driver ................................... 6.39

Step 13 - Changing the Drive Letter ............................................................... 6.41

Step-14 Installing Roxio Easy CD Creator® 5.1 Basic ................................... 6.42

Internal Switch Settings ..................................................................................................... 6.43

Electrode junction Box ............................................................................................. 6.43

Photo Control Unit .................................................................................................... 6.43

BIOS Default Settings ........................................................................................................6.44

PC Unit, CC-901AK (EEG-9100A/J/K/G) .................................................................. 6.44

PC Unit, CC-902AK (EEG-9200A/J/K/G) .................................................................. 6.46

Periodic Replacement Schedule ......................................................................................... 6.48

Maintenance Check Sheet ................................................................................................. 6.49

Overview .................................................................................................................. 6.49

Power ....................................................................................................................... 6.50

Input Circuit and Amplifiers ......................................................................................6.51

Operation ................................................................................................................. 6.51

Activation ................................................................................................................. 6.52

Hard Disk, MO Disk Drive and MO Disk .................................................................. 6.52

Safety ...................................................................................................................... 6.52

CD-ROM/CD-RW Disk Drive and CD-R/CD-RW Disk ............................................... 6.53

Section 7 Replaceable Parts List......................................................... 7C.1

Electrode Junction Box ........................................................................................................ 7.2

Photo Control Unit ................................................................................................................ 7.4

LS-703A Flash Lamp Assembly ...........................................................................................7.6

Section 8 Connector Pin Assignment ................................................ 8C.1

Input/Output Connector/Jack Pin Assignment ..................................................................... 8.1

JE-910A/AG, JE-911A/AG Electrode Junction Box ................................................... 8.1

LS-901AJ/AK/AG Photo Control Unit ......................................................................... 8.3

JE-913A/AG Mini Junction Box..................................................................................8.6

C.4 Service Manual EEG-9100/9200

GENERAL HANDLING PRECAUTIONS

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

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

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

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

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

poorly ventilated areas, and saline or sulphuric air.

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

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

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

specifications, and have sufficient current capacity.

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

3. Before Operation

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

(2) Check that the instrument is grounded properly.

(3) Check that all cords are connected properly.

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

problems.

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

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

4. During Operation

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

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

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

5. To Shutdown After Use

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

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

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

6. The instrument must receive expert, professional attention for maintenance and repairs. When the instrument is

not functioning properly, it should be clearly marked to avoid operation while it is out of order.

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

8. Maintenance and Inspection:

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

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

operating condition.

Service Manual EEG-9100/9200 i

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

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

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

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

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

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

WARRANTY POLICY

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

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

the warranty.

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

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

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

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

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

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

Shipping costs must be pre-paid.

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

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

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

removed.

In the USA and Canada other warranty policies may apply.

CAUTION

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

ii Service Manual EEG-9100/9200

EMC RELATED CAUTION

This equipment and/or system complies with the International Standard IEC60601-1-2 for electromagnetic

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

that exceeds the limits or levels stipulated in the IEC60601-1-2, can cause harmful interference to the

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

degrade its intended performance. Therefore, during the operation of the equipment and/or system, if

there is any undesired deviation from its intended operational performance, you must avoid, identify and

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

The following describes some common interference sources and remedial actions:

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

cellular phone:

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

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

and/or system.

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

or system:

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

possible, use a different power supply.

3.Effect of direct or indirect electrostatic discharge:

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

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

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

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

system as far as possible from the radio wave receiver.

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

Corporation subsidiary or distributor for additional suggestions.

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

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

The CE mark is only applied to the EEG-9100K/G and EEG-9200K/G Electroencephalograph.

This equipment complies with EUROPEAN STANDARD EN-60601-1-2 (1993) which requires EN-55011,

class B.

Service Manual EEG-9100/9200 iii

Conventions Used in this Manual and Instrument

Warnings, Cautions and Notes

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

WARNING

A warning alerts the user to 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.

Explanations of the Symbols in this Manual and Instrument

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

Power supply unit, SC-901A/AK/AG (for EEG-9100A/J/K/G)

Isolation unit, SM-930AA/AJ/AK (for EEG-9200A/J/K/G)

Symbol Description Symbol Description

Alternative current

Equipotential ground terminal Serial number

Attention, consult operator’s manual

Protective ground Date of manufacture

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.

iv Service Manual EEG-9100/9200

EMC

The product complies with IEC60601-1-2 (1993) (for sales in Japan only)

PC unit, CC-901AK (for EEG-9100A/J/K/G)

Symbol Description Symbol Description

Power/suspend indicator RS-232C connector

Symbols on the PC unit differ according to model. Refer to the Operator’s manual of the PC unit.

For the symbols of the following equipments, refer to each Operator’s manual.

• Magneto-optical disk drive

• Printer

Num Lock indicator Mouse connector

Caps Lock indicator USB connector

Scroll Lock indicator PRT connector

Hard disk access lamp indicator Unlock icon

Battery charging indicator Protective ground

Power socket

Attention, consult operator’s manual

Service Manual EEG-9100/9200 v

PC unit, CC-902AK (for EEG-9200A/J/K/G)

Symbol Description Symbol Description

Standby (power on/off) USB connector

Hard disk access lamp Video connector

Headphone connector Network connector

Printer port Audio jack (Microphone)

Serial port Audio jack (LINE OUT)

Mouse connector Audio jack (LINE IN)

Keyboard connector

Protective ground

Attention, consult operator’s manual

Symbols on the PC unit differ according to model. Refer to the Operator’s manual of the PC unit.

For the symbols of the following equipments, refer to each Operator’s manual.

• Display

• Magneto-optical disk drive

• Laser printer

vi Service Manual EEG-9100/9200

Options

Electrode junction box, JE-910A/AG, JE-911A/AG

Symbol Description Symbol Description

Type BF applied part

Flash lamp assembly, LS-703A/LS-706A

Symbol Description Symbol Description

Hot surface

Photo control unit, LS-901AJ/AK/AG

Symbol Description Symbol Description

Attention, consult operator’s manual

Serial number

Photo control unit (inside)

Symbol Description Symbol Description

Alternative current Date of manufacture

Equipotential ground terminal

High voltage Ground

Protective ground

Service Manual EEG-9100/9200 vii

On screen

Symbol Description Symbol Description

Warning query that displays a

Display of list box

warning or caution for operation.

Warning message that displays a

Scrolling of data, list and others

warning or caution for operation you to do something.

Check box

Maximize

Restore

Minimize

Window maximize/resize minimize button

Option button Close button

viii Service Manual EEG-9100/9200

Precautions for Input Jack Use

NOTE

Do not perform EEG measurement without the Z, C3, C4, A1 and A2 electrodes.

Use of input jack Z

Connect the lead from the electrode (Z electrode) attached on the patient’s nasion to the input jack Z on the electrode

junction box. The purpose of this input jack is to eliminate AC interference positively.

NOTE

The input jack Z is also used for checking electrode impedance.

Use of input jacks C3 and C4

Connect the leads from the electrodes attached on the positions C3 and C4 to the input jacks C3 and C4 respectively.

NOTE

• The C3 and C4 electrodes are the system reference electrodes for EEG measurement.

• The input jacks C3 and C4 must be attached for EEG measurement even when the C3 and C4 are not

programmed in any montage.

Use of input jacks A1 and A2 (or FP1 and FP2), C3 and C4 during skin-electrode impedance check

When checking each electrode impedance, connect the leads from the electrode attached on the positions A1, A2, C3 and C4

to the input jacks A1, A2, C3 and C4 respectively.

NOTE

• The A1 and A2 (or FP1 and FP2) electrodes are the reference electrodes for skin-electrode impedance

check.

• The input jacks A1 and A2 (or FP1 and FP2) in addition to the Z, C3 and C4 must be attached for the

electrode impedance check.

PG1

Fz11T315C35Cz24C46T416A2

FP1

PG2

FP2

Checking original electrode potentials for all active electrodes

Check the original electrode potential for all active electrodes by programming a montage with the system reference (Select

the 0 V button for reference electrode on the Montage dialog box). Refer to “Programming Patterns” in Section 4.

The digital EEG displays the EEG waveform in each channel by subtracting two electrode potentials selected to a montage.

The subtracted result will be incorrect, if the electrode attachment is not correct, the original electrode potential is flat or

unstable, or artifact is superimposed on the original electrode potential. Omit the measurement result if the displayed EEG

waveform is incorrect.

Service Manual EEG-9100/9200 ix

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x Service Manual EEG-9100/9200

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

Maintenance Equipments/Tools ............................................................................... 1.5

General Safety Information ................................................................................................ 1.6

Specifications ................................................................................................................... 1.15

Panel Descriptions ........................................................................................................... 1.19

Component Example ............................................................................................. 1.19

EEG-9100A/J/K/G ....................................................................................... 1.19

EEG-9200A/J/K/G ....................................................................................... 1.19

CC-901AK PC Unit (EEG-9100A/J/K/G) ................................................................ 1.20

CC-902AK PC Unit (EEG-9200A/J/K/G) ................................................................ 1.21

SC-901A/AK/AG Power Supply Unit (for EEG-9200A/J/K/G only) ......................... 1.22

SM-930AA/AJ/AK Isolation Unit (for EEG-9200A/J/K/G only)................................ 1.22

JE-910A/AG, JE-911A/AG (Option) Electrode Junction Box .................................. 1.23

JE-913A/AG Mini Junction Box (Option) ................................................................ 1.24

LS-901AJ/AK/AG Photo Control Unit (Option) ....................................................... 1.25

Composition ..................................................................................................................... 1.26

EEG-9100A/J/K/G.................................................................................................. 1.26

Standard Components ................................................................................. 1.26

Options ........................................................................................................ 1.26

EEG-9200A/J/K/G.................................................................................................. 1.28

Standard Components ................................................................................. 1.28

Options ........................................................................................................ 1.28

Connection Diagram ........................................................................................................ 1.30

EEG-9100A/J/K/G.................................................................................................. 1.30

EEG-9200A/J/K/G.................................................................................................. 1.31

Service Manual EEG-9100/9200 1C.1

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1C.2 Service Manual EEG-9100/9200

Introduction

1. GENERAL

This service manual provides useful information to qualified service personnel to

understand, troubleshoot, service, maintain and repair this EEG-9100A/J/K/G and

EEG-9200A/J/K/G Electroencephalograph (referred to as “instrument” in this

service manual.

All replaceable parts or units of this instrument and its optional units are clearly

listed with exploded illustrations to help you locate the parts quickly.

The “Maintenance” section in this service manual only 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 needs to understand the operation of

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

CAUTION

To turn the power off, follow the procedure in “Power Off Procedure”

in Section 3 of the Operator’s manual. Do not press the power button

on the PC unit. If the power button is pressed while a program is

running, the program, data file in the hard disk and/or MO disk may be

damaged.

Trademarks

Dell is a registered trademark of Dell Computer Corporation.

Windows is a registered trademarks of Microsoft Corporation.

Celeron is a trademark of Intel Corporation.

Canon is a registered trademark of Canon Corporation.

Fujitsu is a registered trademark of Fujitsu Limited.

Pentium is a trademark of Intel Corporation.

HP is a registered trade mark of Hewlette-Packard Company

SONY is a registered trade mark of Sony Corporation.

EIZO is a registered trade mark of EIZO NANAO Corporation

Service Manual EEG-9100/9200 1.1

1. GENERAL

General Information on Servicing

Note the following information when servicing the system.

Safety

• There is the possibility that the outside surface of the system, such as

the operation keys, could be contaminated by contagious germs, so

disinfect and clean the system before servicing it. When servicing the

system, 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.

CAUTIONS

Liquid ingress

The system is not waterproof, so do not install the system where water

or liquid can get into or fall on the system. If liquid accidentally gets

into the system or the system accidentally drops into liquid,

disassemble the system, 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 system, 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 in the regular waste collection. Check

with your local officials for proper disposal procedures.

Disinfection and cleaning

To disinfect the outside surface of the system, 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

system.

- Chlorohexidine gluconate solution: 0.5%

- Benzethonium chloride solution: 0.2%

- Glutaraldehyde solution: 2.0%

- Benzalkonium chloride: 0.2%

- Hydrochloric alkyl diaminoethylglycine: 0.5%

1.2 Service Manual EEG-9100/9200

1. GENERAL

Caution - continued

Transport

• Use the specified shipment container and packing material to

transport the system. If necessary, double pack the system. Also, put

the system into the shipment container after packing so that the buffer

material does not get into the inside of the system.

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

conductive bag. Never use an aluminum bag when transporting a

board or unit 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 system.

Handling the system

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

outside surface of the system is easily damaged. So when handling

the system, remove clutter from around the system and be careful to

not damage the system or get it dirty.

• Because most of the boards in the system 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 EEG-9100/9200 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

troubleshooting tables. Refer to “Troubleshooting“ 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 EEG-9100/9200

1. GENERAL

Patient Safety Checks

Maintenance Equipments/ Tools

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

IEC60601-1 “Medical electrical equipment - Part 1: General requirements for

safety”:

• Protective earth resistance check

• Earth leakage current check

• Enclosure leakage current check

• Patient leakage current check

• Withstanding voltage check

Test equipment

When repairing or calibrating the instrument, the following test equipment is

required.

• Oscilloscope: 2 channels or more for input signal, 50 mV to 5 V input range, 1/

10 attenuating probe and 100 MHz or more frequency response characteristic

must be provided.

• Oscillator: standard type

• Digital voltmeter: standard type (An oscilloscope can be used instead of the

digital voltmeter.)

Checking tool

When checking the internal noise of the electrode junction box and skin-electrode

impedance check function, the checking tools are necessary. Refer to Section 7

“Maintenance”.

Service Manual EEG-9100/9200 1.5

1. GENERAL

General Safety Information

• Never use this instrument in the presence of any flammable anesthetic

• Never use this instrument in a high-pressure oxygen medical tank.

Using with an electrical surgical unit (ESU)

• Never use this instrument near an ESU. The instrument may

• When using this instrument with an ESU, refer to the instruction

• Before using the ESU, remove all needle electrodes and silver ball

WARNING

gas or high-concentration oxygen atmosphere. Failure to follow this

warning may cause explosion or fire.

Failure to follow this warning may cause explosion or fire.

malfunction due to high-frequency noise from the ESU.

manual for the ESU. Before measurement, check that the return plate

is correctly attached to the patient and check that the instrument

operates correctly when using with the ESU. If the return plate is not

attached correctly, it may burn the patient’s skin where the electrodes

are attached.

electrodes from the patient. Failure to follow this warning may cause

burn on the patient.

MRI examination

• Do not install this instrument in an MRI examination room. The

instrument may not operate properly due to high-frequency magnetic

noise from the MRI.

• When performing MRI tests, remove from the patient all the electrodes

and transducers which are connected to this instrument. Failure to

follow this warning may cause serious electrical burn on the patient

due to local heating caused by dielectric electromotive force. For

details, refer to the instruction manual for the MRI.

When performing defibrillation

• Before defibrillation, remove from the patient all electrodes and

transducers which are connected to connectors that do not have a

“ ” or “ ” mark. The discharged energy may cause serious

electrical burn or shock to the operator.

• Before defibrillation, remove all electrodes and gel from the chest of

the patient. If the defibrillator paddle touches electrodes or gel, the

discharged energy may burn the patient’s skin.

• Before defibrillation, all persons must keep clear of the bed and must

not touch the patient or any equipment connected to the patient.

Failure to follow this warning may cause serious electrical burn,

shock or other injury.

1.6 Service Manual EEG-9100/9200

Installation

1. GENERAL

WARNING

• Do not install the QP-0042/0043 EEG-9000 System program into a

personal computer which is not specified by Nihon Kohden and use it

for EEG measurement.

- If the personal computer does not satisfy the performance

specifications and safety standards which are required by Nihon

Kohden, the patient and operator may get electrical shock.

- Nihon Kohden does not warrant if hardware and/or software

becomes defective after installation.

• Only use the provided power cords. If another power cord is used, it

may cause electrical shock to the patient and operator.

• For patient safety, equipotential grounding of all instruments must be

performed. Consult a qualified biomedical engineer.

• Use the SC-901A/AK/AG Power Supply Unit (EEG-9100A/J/K/G) or SM-

930AA/AJ/AK Isolation Unit (EEG-9200A/J/K/G) to supply AC power to

a PC unit, display (EEG-9200A/J/K/G only) and an MO disk drive.

When two or more power supply units or isolation units are used,

ground the power supply units or isolation units to the same

equipotential ground and connect the power supply units or isolation

units to the same AC outlet to prevent electrical potential difference

between the power supply units or isolation units. Never use a

locally available multi-power outlets. Failure to follow this warning

may cause electrical shock to the patient and operator.

Display (EEG-9200A/J/K/G only)

• The display must comply with the IEC950 standard and CISPR11

Second Edition 1990-09 Group 1 and Class B standard, or the

equivalent.

• Only supply AC power from the SM-930AA/AJ/AK Isolation Unit. Do

not connect the display to a wall AC outlet. Failure to follow this

warning may cause electrical shock to the patient and operator.

Magneto-optical disk drive

• The MO disk drive must comply with the IEC950 standard and

CISPR11 Second Edition 1990-09 Group 1 and Class B standard, or the

equivalent.

• Only supply AC power from the SC-901A/AK/AG Power Supply Unit

(EEG-9100A/J/K/G) or from the SM-930AA/AJ/AK Isolation Unit (EEG-

9200A/J/K/G). Do not connect the MO disk drive to a wall AC outlet.

Failure to follow this warning may cause electrical shock to the

patient and operator.

Service Manual EEG-9100/9200 1.7

1. GENERAL

* Patient environment

Any area in which intentional or unintentional contact between PATIENT and parts of SYSTEM or some other persons touching of the SYSTEM can occur.

Warning - continued

Printer

• The printer must comply with the IEC950 standard and CISPR11

Second Edition 1990-09 Group 1 and Class B standard, or the

equivalent.

• Mount the printer on the KE-910A Cart (EEG-9100A/J/K/G) or KD-024A

Cart (EEG-9200A/J/K/G) and supply AC power from the SC-901A/AK/AG

Power Supply Unit (EEG-9100A/J/K/G) or SM-800RJ/RK Isolation Unit

(EEG-9200A/J/K/G) . Do not connect the printer to a wall AC outlet.

Failure to follow this warning may cause electrical shock to the

patient and operator.

• When the printer is not mounted on the KE-910A Cart or KD-024A Cart,

locate the printer outside the patient environment (IEC60601-1-1 2.204*)

and supply AC power from a medical isolation transformer. Do not

connect the printer to a wall AC outlet. Failure to follow this warning

may cause electrical shock to the patient and operator.

• Connect only the specified instruments to the connectors or socket

marked with , by following the specified procedure. Otherwise,

electrical leakage current may harm the patient and operator.

• When the instrument is turned on, about 600 V is present at pin 2 of

the PHOTIC LAMP connector on the LS-901AJ/AK/AG Photo control

unit. To protect against shock, always connect the flash lamp

assembly cable to this connector, or attach the PHOTOTIC LAMP

connector cap to the PHOTIC LAMP connector even when the photic

stimulation is not used.

• When connecting an external instrument to the connectors marked

with , the external instrument and this instrument must be

connected according to the IEC-60601-1-1 “Medical electrical

equipment - Part 1-1: General requirements for safety - Collateral

standard: Safety requirements for medical electrical systems”. Failure

to follow this warning may cause electrical shock to the patient and

operator.

Connecting to a Local Area Network

• When connecting the instrument to a local area network, connect the

instrument so that the instrument is electrically separated from the

local area network according to the IEC-60601-1-1 “Medical electrical

equipment - Part 1-1: General requirements for safety - Collateral

standard: Safety requirements for medical electrical systems”. Failure

to follow this warning may cause electrical shock to the patient and

operator.

• Check that there is no damage on the surface of the network cable. If

it is damaged, it may cause electrical shock to the patient and

operator.

1.8 Service Manual EEG-9100/9200

1. GENERAL

Warning - continued

• Before connecting or disconnecting the DC input cable to the DC input

connector on the JE-911A/AG Electrode junction box, make sure that

the power of the external instrument is turned off or DC signal is not

output from the external instrument. Failure to follow this warning

may cause electrical shock to the patient and operator.

CAUTION

• When connecting the cables, make sure that each instrument is turned

off.

• Connect only the CC-901AK PC unit and MO disk drive to the SC-901A/

AK/AG power supply unit. If other equipment is connected, the power

supply unit may not supply enough AC power and may cause

malfunction.

• Connect only the CC-902AK PC unit, display and MO disk drive to the

SM-930AA/AJ/AK Isolation Unit. If other equipment is connected, the

isolation unit may not supply enough AC power and may cause

malfunction.

• Only install the specified software in the instrument. Otherwise the

system may malfunction.

• When moving the instrument, select a flat path and move it carefully

to prevent the components from falling off or the cart from tipping

over.

• If static electricity is applied to the connector for the optional

hyperventilation unit, pulse noise may be superimposed on the

waveform of the mark channel.

• When using the instrument in a high-frequency electric field, the

displayed waveform trace may be thicker.

• Use a printer cable which does not emit an unwanted radio frequency

signal (EMC protected).

Service Manual EEG-9100/9200 1.9

1. GENERAL

Caution - continued

Cart

• Use only the KE-910A Cart (EEG-9100A/J/K/G) or KD-024A/025A (EEG-

9200A/J/K/G) for this instrument. If any of these carts is not used,

secure the components of the instrument so that they do not fall off or

tip over.

• Do not sit or lean on the cart because it may tip over.

• Set the components of the electroencephalograph on the cart

according to the specified procedures. Otherwise, the cart may break

or the components may tip over.

• Align the cable with the cable tie or cable clamp so that the cable is

not accidentally pulled or caught. Otherwise, the connector may be

damaged or the components connected on the cart may fall off and

cause injury.

• Do not use the SD-901AJ/AK/AG (EEG-9100A/J/K/G), SD-903AJ/AK/AG

(EEG-9200A/J/K/G) Multiple Portable Socket Outlet if it is not secured

to the cart. Otherwise, it may cause electrical shock to the patient and

operator.

• When moving the cart,

- make sure that the power of all components are turned off,

- close the PC unit display (EEG-9100A/J/K/G - CC-901AK),

- release the caster lock,

- only grip the handle,

- select a flat path and move the cart carefully to prevent tipping over,

components falling or impact, and

- take care so that the electrode junction box or flash lamp assembly

does not bump into a surrounding instrument.

• Periodically check that the caster rotates smoothly and that no screw

or knob bolt is loose.

1.10 Service Manual EEG-9100/9200

OperationOperation

1. GENERAL

WARNING

• When using the instrument for brain death diagnosis, before

examination, check and adjust the date and time of the system. The

date and time on the screen and on the recording result are part of

important information for the medical record.

• Do not connect the Z electrode lead plug to a ground or equipotential

ground. Otherwise, leakage current from another instrument cause

electrical shock to the patient.

• When the JE-913A/AG mini junction box is not used, make sure that

the multiple connecter cover is firmly attached to the electrode

junction box. Failure to follow this warning may cause electrical

shock to the patient and operator.

• All activation testing must be applied under the supervision of the

physician in charge. Mouth gags, tongue depressors and gauze

sponges must always be prepared for use to prevent the patient from

biting his tongue or injuring himself during testing because any

pattern of flash stimuli may induce seizure activity.

• Do not perform hyperventilation activation when the patient has

serious heart disease, acute cerebrovascular disease or respiratory

insufficiency.

• When performing the photic stimulation, If an abnormal waveform

appears due to photo-paroxymal response, stop the photic stimulation

immediately to prevent evoking seizure.

When using the NE-224S Sub-dermal Straight Needle Electrode

• Do not use the NE-224S sub-dermal straight needle electrode as a

measurement electrode for the EEG or evoked potential measurement

for any longer than one hour. When measuring the EEG or evoked

potential for over one hour, use the EEG disk electrode.

• Do not check the skin-electrode impedance when using a needle

electrode or intracranial electrode. Failure to follow this warning

injures the patient because these electrodes will be damaged by

electrolyzation inside the body.

• Only connect the respiration pickup which is specified by Nihon

Kohden to the RESP F, C, A jack. If an unspecified respiration pickup,

sensor or equipment is connected, electrical leakage current may

harm the patient and operator.

Service Manual EEG-9100/9200 1.11

1. GENERAL

CAUTION

• During measurement, do not change the date and time. This makes

the order of the saved event data and the time of the saved waveforms

incorrect.

• Do not use the photic stimulator continuously over 5 minutes in any

mode. When photic stimulation is performed for a long time, the flash

lamp assembly gets very hot and causes burn if touched. If the photic

stimulator is continuously used for 5 minutes, do not use it for at least

20 minutes to let it cool down.

• Do not turn the instrument off when the program is running.

When turning the instrument off, follow the procedure in “Power Off

Procedure” in Section 2.

• Do not delete any system file in the hard disk. Otherwise the

instrument may malfunction.

• Do not remove the optical disk or magneto-optical disk until the disk

drive access lamp is off. Otherwise, the disk or disk drive may be

damaged.

• Periodically back up the EEG data files to prevent loss of data when

the hard disk or MO disk is damaged.

NOTE

• If any static electricity enters the electrode junction box or serial input

terminal, spike noise may be superimposed on the waveform.

• If static electricity is applied to the connector for the optional

hyperventilation unit, pulse noise may be superimposed on the

waveform of the mark channel.

• When using the instrument in a high-frequency electric field, the

displayed waveform trace may be thicker.

Disinfecting or Sterilizing

CAUTION

Turn off the power before cleaning or disinfecting. Otherwise you may

get an electrical shock or the instrument may malfunction.

1.12 Service Manual EEG-9100/9200

Floppy Disk/CD-ROM Disk Handling and Storing WARNING

The QP-0042/QP-0043 EEG-9000 System Program is protected by

distribution of this software, or any portion of it, may result in severe

civil and criminal penalties, and will be prosecuted to the maximum

extent possible under law.

CAUTION

• Keep floppy disks away from strong magnetic objects such as a

magnet, TV set or speaker. Otherwise, data in the disk may be lost.

• Do not insert or remove a disk while the lamp on the disk unit is lit.

• During measurement, do not insert or remove a CD-R or CD-RW disk

into the CD-RW drive. Otherwise, the Acquisition program may

malfunction (EEG-9200A/J/K/G).

1. GENERAL

• Do not touch the disk surface of the recorded side (CD-ROM: opposite

side of the label side). If the surface of the disk becomes

contaminated with any foreign substances such as fingerprints,

reading data may be impossible.

• Keep the disk away from direct sunlight and high temperature.

Otherwise, the disk may become deformed.

• Do not handle the disk while smoking or eating.

• Do not get the disk wet.

• Do not put a label on top of another label. Remove the old label

before applying a new label.

• Do not write on the label after the label is attached on the disk.

Otherwise, the disk may be damaged and reading may be impossible.

• Do not bend the disk, put heavy material on the disk, or give a strong

impact to the disk.

• Clean the disk with a disk cleaner. Do not use organic solvents such

as acetone.

• This CD–ROM is not an audio CD and cannot be played with an audio

CD player.

Service Manual EEG-9100/9200 1.13

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