Nihon Kohden TEC-5521C, TEC-5521E, TEC-5531E, TEC-5521K, TEC-5531C Service Manual

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TEC-5521C

TEC-5531C

TEC-5521E

TEC-5531E

TEC-5521K

TEC-5531K

SERVICE MANUAL

DEFIBRILLATOR

TEC-5500

0634-002155

Tradmark

The mark printed on the holter card and SD card adapter that are used in this instrument is a trademark. The company

name and model name are trademarks and registered trademarks of each company.

Contents

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

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

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

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

Dangers, Warnings, Cautions and Notes .............................................................v

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

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

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

Models and Functions ................................................................................................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 and Tools ...........................................................................1.5

Important Safety Information ...............................................................................................1.6

Specifications .................................................................................................................... 1.21

Panel Description ............................................................................................................... 1.26

Front Panel ............................................................................................................... 1.26

Top Panel (TEC-5531 Series Only) ........................................................................... 1.27

External Paddles ...................................................................................................... 1.28

Left Side Panel ......................................................................................................... 1.28

Rear Panel ...............................................................................................................1.29

Composition ....................................................................................................................... 1.30

Standard Components .............................................................................................. 1.30

Options..................................................................................................................... 1.32

Board/Unit Location ............................................................................................................ 1.34

Block Diagram .................................................................................................................... 1.35

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

How to Troubleshoot .............................................................................................................2.1

Error Code ............................................................................................................................2.2

Defibrillation ............................................................................................................... 2.3

Operation Panel ..........................................................................................................2.4

Communication .......................................................................................................... 2.5

Data Error...................................................................................................................2.6

Pacing (TEC-5531 Series Only)..................................................................................2.6

Message...............................................................................................................................2.7

Troubleshooting .................................................................................................................... 2.9

General ....................................................................................................................... 2.9

Defibrillation ............................................................................................................. 2.10

Service Manual TEC-5500 C.1

CONTENTS

Monitoring ................................................................................................................ 2.11

Recording ................................................................................................................. 2.13

Battery ..................................................................................................................... 2.13

Pacing (TEC-5531 Series Only)................................................................................ 2.14

Section 3 Disassembly ......................................................................... 3C.1

Before You Begin .................................................................................................................. 3.1

Warnings, Cautions and Notes ................................................................................... 3.1

Required Tools ............................................................................................................ 3.2

Connection Diagram .............................................................................................................3.3

Removing the Lower Casing ................................................................................................. 3.5

Removing the Paddles ............................................................................................... 3.5

Removing the Battery Pack ....................................................................................... 3.5

Removing the Lower Casing ....................................................................................... 3.6

Removing the CPU Board and Mother board ........................................................................ 3.7

Removing the CPU Board ..........................................................................................3.7

Removing the Mother Board ...................................................................................... 3.8

Removing the Front Chassis ................................................................................................ 3.9

Removing the Side Casing ................................................................................................. 3.10

Removing the Recorder Unit .................................................................................... 3.11

Removing the Biphasic HV Unit ......................................................................................... 3.12

Removing the HV Capacitor ............................................................................................... 3.14

Attaching the HV Capacitor ...................................................................................... 3.15

Removing the AC/DC Unit .................................................................................................. 3.16

Removing the Test Load Board........................................................................................... 3.17

Removing the Pacer Board (TEC-5531 Series Only) .......................................................... 3.18

Removing the LCD Unit ...................................................................................................... 3.19

Removing the Key Board ....................................................................................................3.20

Removing the Energy/Mode Select Control Knob..................................................... 3.20

Removing the Speaker ....................................................................................................... 3.21

Removing the Paddle Lock Springs .................................................................................... 3.22

Removing the AC SOURCE Socket ................................................................................... 3.23

Section 4 Maintenance ......................................................................... 4C.1

General .................................................................................................................................4.1

Daily Checks....................................................................................................4.1

Monthly Checks ...............................................................................................4.1

System Maintenance Screen ............................................................................................... 4.3

Calling Up the System Maintenance Screen ..............................................................4.3

About the Menu Items ................................................................................................ 4.4

System Maintenance Screen Flowchart ........................................................... 4.5

Default Settings ............................................................................................... 4.6

Flash Save Procedure ................................................................................................4.7

Configuration Screen .................................................................................................. 4.8

Adjust AD Screen ......................................................................................................4.9

Adjust ECG A/D Screen ................................................................................. 4.10

Adjust HV AD Screen .................................................................................... 4.12

C.2 Service Manual TEC-5500

CONTENTS

Adjust Battery AD Screen .............................................................................. 4.15

Paddle Contact A/D Screen ........................................................................... 4.16

Check Hardware Screen ........................................................................................... 4.17

Check Key Screen ......................................................................................... 4.17

Check LED Screen ........................................................................................ 4.19

Check LCD Screen ........................................................................................ 4.19

Check Recorder Screen ................................................................................. 4.19

Check Time Constant Screen ........................................................................ 4.20

Check Buzzer Screen .................................................................................... 4.21

Check Memory Screen ................................................................................... 4.21

Check Voice Screen ....................................................................................... 4.22

Check ECG Frequency Screen ...................................................................... 4.23

A/D View Screen ...................................................................................................... 4.24

Operation Time Screen ............................................................................................. 4.24

Version Up Screen ................................................................................................... 4.25

Debug Mode Screen .................................................................................................4.25

Check String Screen ...................................................................................... 4.26

Memory Dump Screen ................................................................................... 4.26

Periodic Replacement Schedule ......................................................................................... 4.27

Maintenance Check Sheet ................................................................................................. 4.28

Section 5 Replaceable Parts List......................................................... 5C.1

Replaceable Parts List ......................................................................................................... 5.2

Service Manual TEC-5500 C.3

CONTENTS

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C.4 Service Manual TEC-5500

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 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 TEC-5500 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.

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 TEC-5500

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, excessive

voltage may be generated 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 TEC-5500 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.

For EMC compliance, refer to “Specification - Electromagnetic Compatibility” in the Reference section

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 TEC-5500

Conventions Used in this Manual and Instrument

Dangers, Warnings, Cautions and Notes

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

DANGER

A danger is used to alert the user to a hazardous situation which will cause death or serious injury.

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.

Service Manual TEC-5500 v

Explanations of the Symbols in this Manual and Instrument

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

On main unit

Symbol Description Symbol Description

AC power operation Input

Charging Dangerous voltage

Charged (Battery charging is finished)

ECG lead Pacing start

ECG sensitivity Pacing stop

Alarm off

Real time/delayed recording

Event recording Complying with IEC 60529 IPX1

Inserting or removing the memory card

IPX1

IPX4

ECG

Attention, consult operator’s manual

Provides ActiBiphasic waveform defibrillation function

Complying with IEC 60529 IPX4

Defibrillation-proof type BF applied part

Defibrillation-proof type CF applied part

Output

vi Service Manual TEC-5500

IPX7

Complying with IEC 60529 IPX7

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

On LCD

Symbol Description Symbol Description

Battery fully charged Add Z-fold recording paper

More than 2/3 battery charge remains

More than 1/3 battery charge remains

Battery power for one 270 J charging remains

Battery operation not available Alarm off

QRS sync mark

The point of implanted pacemaker pulse output

AC power operation

Real time/delayed recording Event recording

SD card inserted Cannot write to the SD card

Writing to the SD card Can eject SD card

ECG cascaded display Report recording

AED analysis paused SpO2 pulse wave unstable

CPR start VF/VT alarm off

Service Manual TEC-5500 vii

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viii Service Manual TEC-5500

Section 1 General

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

Models and Functions ...............................................................................................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 and Tools ..........................................................................1.5

Important Safety Information ..............................................................................................1.6

Specifications ................................................................................................................... 1.21

Panel Description .............................................................................................................. 1.26

Front Panel .............................................................................................................. 1.26

Top Panel (TEC-5531 Series Only) .......................................................................... 1.27

External Paddles ..................................................................................................... 1.28

Left Side Panel ........................................................................................................ 1.28

Rear Panel .............................................................................................................. 1.29

Composition ...................................................................................................................... 1.30

Standard Components ............................................................................................. 1.30

Options.................................................................................................................... 1.32

Board/Unit Location ........................................................................................................... 1.34

Block Diagram ................................................................................................................... 1.35

Service Manual TEC-5500 1C.1

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1C.2 Service Manual TEC-5500

Introduction

Models and Functions

1. GENERAL

This service manual provides useful information to qualified service personnel to

understand, troubleshoot, service, maintain and repair this TEC-5500 series

defibrillator

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

defibrillator. This is because service personnel needs to understand the operation

of the defibrillator in order to effectively use the information in the service

manual.

Functions TEC-5521 TEC-5531

Defibrillation and synchronized cardioversion

3 lead ECG Standard Standard

AED function Standard Standard

Noninvasive pacing Not available Standard

SpO2 measurement Option Option

CO2 measurement Option Option

Voice prompt Standard Standard

5 lead ECG Option Option

External ECG input Option Option

External ECG output Option Option

External paddles Standard Standard

Internal paddles Option Option

Disposable pads Option Option

Pediatric electrode assy 44 mm

Option Option

SD card slot Standard Standard

Sound recording Standard Standard

Service Manual TEC-5500 1.1

1. GENERAL

General Information on Servicing

Note the following information when servicing the defibrillator.

Safety

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

such as the operation keys, could be contaminated by contagious

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

When servicing the defibrillator, 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 defibrillator is not waterproof, so do not install the defibrillator

where water or liquid can get into or fall on the defibrillator. If liquid

accidentally gets into the defibrillator or the defibrillator 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

defibrillator, contact your Nihon Kohden representative for repair.

Environmental Safeguards

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

dispose of the lithium battery in the regular waste collection. Check

with your local officials for proper disposal procedures.

Disinfection and cleaning

To disinfect the outside surface of the defibrillator, 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

defibrillator.

- 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 TEC-5500

1. GENERAL

Caution - continued

Transport

• Use the specified shipment container and packing material to

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

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

that the buffer material does not get into the inside of the defibrillator.

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

conductive bag on. Never use an aluminum bag when transporting a

board or unit 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 defibrillator.

Handling the defibrillator

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

outside surface of the defibrillator is easily damaged. So when

handling the defibrillator, remove clutter from around the defibrillator

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

• Because most of the boards in the defibrillator 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 TEC-5500 1.3

1. GENERAL

Service Policy, Service Parts and Patient Safety Checks

Service Policy Our technical service policy for this defibrillator 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.

Only disassemble the defibrillator or replace a board or unit in an environment

where the defibrillator 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 defibrillator.

1.4 Service Manual TEC-5500

1. GENERAL

Patient Safety Checks

Maintenance Equipments and Tools

Periodic maintenance procedures and diagnostic check procedures are provided in

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

design and production specifications. To verify that the defibrillator is working in

a safe manner with regard to patient safety, patient safety checks should be

performed on the defibrillator before it is first installed, periodically after

installation, and after any repair is made on the defibrillator.

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 defibrillator, 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.

• Power supply

• Oscillator: standard type

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

digital voltmeter.)

Service Manual TEC-5500 1.5

1. GENERAL

Important Safety Information

General

• Never use the defibrillator in a flammable atmosphere (i.e. areas with

flammable anesthetics, concentrated oxygen, hyperbaric oxygen) or in

an environment in which an electrical arc could ignite an explosion.

Otherwise, the defibrillator will explode or fire.

• Never use the defibrillator in a high-pressure oxygen medical care

tank. Otherwise, the defibrillator will explode or fire.

• The defibrillator generates high voltage. The defibrillator must only

be operated by trained and qualified medical personnel.

• Radiofrequency or Electromagnetic Field

Do not use any kind of non-essential non-patient care device within a

radius of 1 meter around the defibrillator. The use of non-essential

non-patient care devices that emit radiofrequency or electromagnetic

fields may interfere with the operation of the defibrillator by causing

noise on the ECG waveform or error messages. If a non-essential

non-patient care device is accidentally placed near the defibrillator,

quickly remove it.

• MRI examination

- Do not install this defibrillator in an MRI examination room. The

defibrillator may not operate properly due to high-frequency

magnetic noise from the MRI.

- When performing MRI tests, remove all electrodes and transducers

from the patient which are connected to this defibrillator. 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.

• Using with ESU

- When using this defibrillator with an ESU, the ESU return plate and

the electrodes for monitoring must be firmly attached to the patient.

If the return plate is not attached correctly, it may burn the patient’s

skin where the electrodes are attached. Refer to the instruction

manual for the ESU.

- When using an ESU, use this defibrillator only in the MONITOR

mode and use the ECG electrodes for monitoring. Do not monitor

ECG with disposable pads, external paddles or internal paddles.

Otherwise, high frequency energy from the ESU causes abnormal

current to flow in the patient and unexpected discharge. This causes

serious electrical burn, shock, or other injury and damages the

defibrillator.

DANGER

WARNING

1.6 Service Manual TEC-5500

1. GENERAL

WARNING continued

• Surrounding Conditions

Fluids such as Ringer’s saline solution and blood are excellent

electrical conductors; to avoid creating potentially dangerous

electrical paths, keep the defibrillator and the immediate area clean

and dry at all times.

CAUTION

• Install the defibrillator and ESU appropriately and perform

equipotential grounding. Otherwise, noise from the ESU may be

falsely recognized as QRS and ECG monitoring may not be performed

properly.

• Use only Nihon Kohden products and specified parts and accessories.

When other products, parts or accessories are used, the defibrillator

heats up and breaks down, and monitoring stops.

• Do not reuse disposable products.

Installation

WARNING

• Connect only the specified instrument to the defibrillator by following

the specified procedure. Otherwise, electrical leakage current may

harm the patient and operator.

• Connect only the specified instruments to the connector or sockets

marked with by following the specified procedure. Otherwise,

electrical leakage current may harm the patient and operator.

• Only use the provided power cord. Failure to follow this warning may

cause electrical shock to the patient and operator, and may damage

the defibrillator. When the provided power cord cannot be used,

operate the defibrillator on battery power.

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

performed. Consult with a qualified biomedical engineer.

• Do not connect several grounding leads directly to the equipotential

terminal because the grounding lead may be disconnected from the

terminal.

CAUTION

• The defibrillator should only be connected to external equipment

which complies with the CISPR 11 Second Edition 1990-09, Group 1

and Class B standard.

• Use only the KD-028A Cart for this defibrillator. If another cart is used,

the cart may tip over or the defibrillator may fall off.

Service Manual TEC-5500 1.7

1. GENERAL

Battery

DANGER

• Keep the battery pack away from fire. Do not heat the battery pack.

Otherwise, the electrolyte comes out and the battery pack explodes.

• Never short-circuit the + and – terminals on the battery pack with a

wire. Never store or carry the battery pack with metal such as

necklace or hair pins. The battery pack short-circuits and a large

current flows, causing leakage of the substance inside the battery and

battery explosion.

• Never disassemble or modify the battery pack. Never damage or

directly solder the sheath tube. The battery pack short-circuits, the

electrolyte comes out and the battery pack explodes.

• Do not subject the battery pack to a strong mechanical shock. The

battery leaks and explodes.

• Do not use a battery which is damaged, such as from falling. There is

a gas discharge valve inside the battery and if this valve is damaged,

the gas cannot be discharged, causing the battery to explode.

• If the battery pack is damaged and the substance inside the battery

(alkaline liquid) contacts the eyes or skin, wash immediately and

thoroughly with water and see your physician. Never rub your eyes,

otherwise you may lose your eyesight.

• The battery pack has + and – polarity. Make sure that the battery is

installed with the correct polarity direction. Otherwise, the substance

inside the battery leaks and the battery pack explodes.

• Do not charge the battery pack with an instrument other than this

defibrillator. With another instrument, abnormal current flows and the

substance inside the battery leaks and the battery explodes.

• Do not connect the battery pack to an AC outlet or lighter socket in a

car. The substance inside the battery leaks and the battery pack

explodes.

WARNING

• Check the battery performance once a month.

• After battery check, immediately charge the battery.

• When you start using a new battery pack, write down the date of

battery first use on the label on the battery pack.

• Replace the battery pack every one year.

• During the battery test, the defibrillator cannot perform defibrillation

or cardioversion with battery power. Use the defibrillator on AC

operation or use another defibrillator. If the battery is deteriorated or

is not charged enough, defibrillation or cardioversion cannot be

performed.

• Do not immerse the battery pack in water or seawater. The battery

heats up and rusts and the substance inside the battery leaks.

• Never use a battery pack which is damaged, discolored or has leakage.

A damaged battery explodes if used.

• Do not leave the battery unused for more than one year. The battery

may leak.

1.8 Service Manual TEC-5500

1. GENERAL

CAUTION

• When inserting or removing the battery, disconnect the power cord

from the defibrillator. Otherwise, the operator may get electrical

shock.

• To keep the battery fully charged, always keep the power cord

connected to the AC outlet even when the defibrillator is not used.

• Do not expose the battery pack to direct sunlight or leave in a high

temperature place. The lifetime of the battery pack may be shortened,

the performance of the battery may be degraded and the substance

inside the battery may leak.

• The battery pack must be inserted by a qualified service personnel.

• Keep the battery pack away from children.

• Before disposing of the battery, check with your local solid waste

officials for details in your area for recycling options or proper

disposal. The battery is recyclable. At the end of its useful life, under

various state and local laws, it may be illegal to dispose of this battery

into the municipal waste stream.

Service Manual TEC-5500 1.9

1. GENERAL

Disposable Pads

WARNING

• Failure to comply with the following warnings may cause serious skin

burn or insufficient energy discharge and pacing current to the heart.

- Do not reuse disposable pads. The pads are disposable.

- If the pad package is broken, dispose of the pads and do not use

them.

- Do not use the pads if they are past the expiration date on the

package.

- Use the disposable pads as soon as possible after removing them

from the package. Do not use a pad which is left for a long period of

time after being removed from the package.

- Do not use the disposable pads if the gel has become dry, or the gel

breaks down and releases water.

- Do not use the disposable pads if the color of the gel changes to

dark brown and dark brown gel is on the protective liner.

• If any pad or connector gets wet, replace it with a new one. If a wet

pad or connector is used, it may cause electrical shock.

• Replace the disposable pads after 1 hour pacing.

CAUTION

• When using the disposable pads for long term ECG monitoring,

replace them every 24 hours. Failure to follow this caution may cause

insufficient pacing current and insufficient energy discharge to the

heart.

• Do not attach a disposable pad over another pad. Failure to follow

this caution may cause serious skin burn.

• Do not put heavy objects on the disposable pads or bend the pads.

Otherwise the pads get damaged and deteriorated, resulting in skin

burn on the patient.

1.10 Service Manual TEC-5500

1. GENERAL

Defibrillation, Cardioversion and AED

General

WARNING

• Before defibrillation and cardioversion, make sure that no one is in

contact with either the patient or any metal part of any equipment or

cables which supports or is connected to the patient. Failure to follow

this warning causes serious electrical shock or injury.

• Before defibrillation and cardioversion, remove all electrodes, probes

and transducers connected to a connector without a “ ” or “ ”

mark from the patient. Otherwise the operator may get electrical

shock and the connected instrument may be damaged.

• Before defibrillation and cardioversion, move all electrodes and

medicine on the patient’s chest to positions where the defibrillator

paddle or disposable pad will not touch. If the defibrillator paddle or

disposable pad directly touches electrodes or medicine, it causes skin

burn on the electrode or medicine attachment site.

• Do not carry or move the defibrillator when the charged energy

remains in the defibrillator. If the defibrillator falls, it discharges

energy and can cause electrical shock.

• For this defibrillator, the CONTACT lamp on the STERNUM paddle

indicates skin-paddle contact impedance. If the yellow or orange lamp

lights, the defibrillator may cause serious electric burn on the

patient’s skin and poor energy discharge to the patient. In case of an

emergency, medical personnel should decide whether to execute

discharge immediately, regardless of the CONTACT lamp display, or

take action to make good contact before discharge.

• Pay careful attention to the energy selection when using the pediatric

electrode plates. Applying high energy with the pediatric electrode

plates can cause serious electrical burn because the electrode plates

are small.

• Use the ECG monitoring electrodes (disposable electrodes) to monitor

the ECG waveforms. Stable ECG cannot be acquired with the PADDLE

lead because it is difficult to hold the paddles stable. ECG acquired

from external paddles, internal paddles or disposable pads is unstable

after discharge because of high polarization voltage.

• Do not perform defibrillation or cardioversion in a wet place. Before

defibrillation or cardioversion, move the patient and defibrillator to a

dry place. Otherwise the operator may get electrical shock.

• Do not discharge near a person or object other than the patient or test

electrode plate or energy checker. It may cause electrical shock to the

person or object.

• Confirm that there is no artifact on the ECG. If there is artifact on the

ECG, signals other than ECG are misrecognized to be QRS and

accidental discharge may occur which is not synchronized with the

patient’s QRS wave.

Service Manual TEC-5500 1.11

1. GENERAL

WARNING continued

• Do not perform synchronized cardioversion with the PADDLE lead

unless it is absolutely necessary. In synchronized cardioversion with

the PADDLE lead, artifact may be misrecognized as QRS and

accidental discharge may occur which is not synchronized with the

patient’s QRS wave.

• Never select “TEST” for the ECG lead. “TEST” is for maintenance and

the waveform displayed on the screen is not the patient’s ECG. If

synchronized cardioversion is performed with the TEST lead,

accidental discharge occurs which is not synchronized with the

patient’s QRS wave and it may cause ventricular fibrillation.

• If you use the ECG signal from the monitor, before cardioversion,

check that the defibrillator discharge occurs within 60 ms of the peak

of the ECG’s R wave with a delivery checker. If this condition is not

met, the cardioversion may be ineffective or may cause ventricular

fibrillation.

• The apex-posterior placement is not suitable for ECG monitoring or

AED analysis.

• The anterior-posterior placement is not suitable for defibrillation,

cardioversion, ECG monitoring or AED analysis. Use this placement

only for pacing.

CAUTION

When performing synchronized cardioversion, confirm that the SYNC

lamp is lit before every discharge. If “Sync mode after CV” is set to

Defib on the System Setup-Configuration screen, the defibrillator

automatically turns to the asynchronous defibrillation mode.

With External Paddles

WARNING

• Apply contact gel only to the electrode plates of the external paddles.

If contact gel gets on any other part of the defibrillator, it may cause

electrical shock to the operator.

• Do not apply contact gel by hand. Failure to follow this warning may

cause serious electrical burn, shock, or other injury.

• Do not grasp the paddle handles with the wet hand or the hand with

contact gel attached. Failure to follow this warning may cause

electrical shock to the operator.

• Apply contact gel to the electrode plates of the external paddles.

Failure to apply contact gel causes serious skin burn.

• Do not touch the electrode plate or edge of the paddle. Failure to

follow this warning may cause serious electrical burn, shock, or other

injury.

1.12 Service Manual TEC-5500

1. GENERAL

WARNING continued

• When charging or discharging, do not touch anything other than the

handles. Failure to follow this warning causes electrical shock to the

operator.

• Before discharging, confirm that the paddles are firmly pressed

against the chest wall. Failure to follow this warning causes serious

skin burn or poor energy discharge to the heart.

• Do not perform open discharge into the air. This may cause electrical

shock to the operator or damage the defibrillator.

• Do not discharge the energy if the paddles are shorted to each other

by contact gel. Failure to follow this warning causes serious electrical

burn and poor energy discharge to the heart.

CAUTION

••

• If the patient’s body is wet, thoroughly wipe the moisture off the skin

••

so that the paddles do not short to each other.

••

• Do not discharge when the paddles touch each other. This may

••

damage the defibrillator.

With Disposable Pads

WARNING

••

• Do not attach pads on the papilla, electrodes or medicine on the

••

patient’s body. Failure to follow this warning causes serious skin

burn.

••

• Fit the pad closely to the body surface so that current flows uniformly

••

through the pad. Failure to follow this warning causes serious skin

burn or insufficient energy discharge to the heart.

••

• During charging or discharging, do not touch the pads or connectors.

••

Failure to follow this warning causes electrical shock to the operator.

••

• Before discharging, confirm that the pads are firmly applied to the

••

chest wall. Failure to follow this warning causes serious skin burn or

poor energy discharge to the heart.

• Do not discharge if the pads overlap each other or if the pads are

shorted to each other by anything conductive such as contact gel.

Failure to follow this warning causes serious electrical burn and poor

energy discharge to the heart.

Service Manual TEC-5500 1.13

1. GENERAL

guard

CAUTION

• When connecting the pad adaptor to the paddle connector, do not

bend or damage the connector pin. Otherwise energy cannot be

discharged to the pads.

• If the patient’s body is wet, thoroughly wipe the moisture off the skin

so that the pads do not short to each other.

With Internal Paddles

WARNING

• Always sterilize the internal paddles before use. Failure to follow this

warning may cause serious infection.

• Pay careful attention to the energy selection when using internal

paddles. Applying high energy to the heart may cause cardiac muscle

necrosis. Low energy is recommended.

• During charging and discharging, grip the internal paddles between

the guard at the top of the handle and the cable. If you grip the handle

between the electrode and the guard, you may get an electrical shock.

• Before discharging, confirm that the paddles are firmly positioned

against the heart. Failure to follow this warning causes serious skin

burn or poor energy discharge to the heart.

• Do not perform open discharge into the air. This may cause electrical

shock to the operator or damage the defibrillator.

CAUTION

• Do not twist the internal paddle holding the electrode part or give

strong impact to the paddle. It damages the electrode part.

• When connecting the internal paddles to the paddle connector, do not

bend or damage the connector pin. Otherwise energy cannot be

discharged to the paddles.

• Do not discharge when the paddles touch each other. This may

damage the defibrillator.

1.14 Service Manual TEC-5500

1. GENERAL

AED

WARNING

• Do not attach pads on the papilla, electrodes or medicine on the

patient’s body. Failure to follow this warning causes serious skin

burn.

• Fit the pad closely to the body surface so that current flows uniformly

through the pad. Failure to follow this warning causes serious skin

burn or insufficient energy discharge to the heart.

• When you perform defibrillation in an ambulance, stop the car.

• During charging or discharging, do not touch the pads or connectors.

Failure to follow this warning cause electrical shock to the operator.

• Before discharging, confirm that the pads are firmly applied to the

chest wall. Failure to follow this warning causes serious skin burn or

poor energy discharge to the heart.

• Do not discharge if the pads overlap each other or if the pads are

shorted to each other by anything conductive such as contact gel.

Failure to follow this warning causes serious electrical burn and poor

energy discharge to the heart.

CAUTION

• Before AED analysis or defibrillation, confirm that the patient is

unconscious and has no respiration and no pulse.

• The ECG of a child or a patient with a implanted pacemaker cannot be

analyzed correctly. For these patients, follow the physician’s

instruction.

• During AED analysis, do not touch or move the patient, pad adaptor

and disposable pad cable. Stop the life saving treatment such as CPR.

Otherwise, correct analysis result cannot be obtained. If the ECG

baseline is wandering because of surrounding conditions,

measurement conditions or electrode conditions, remove the causes

before performing AED analysis.

• When connecting the pad adaptor to the paddle connector, do not

bend or damage the connector pin. Otherwise energy cannot be

discharged to the pads.

• If the patient’s body is wet, thoroughly wipe the moisture off the skin

so that the pads do not short to each other.

• Do not discharge when the paddles touch each other. This may

damage the defibrillator.

Service Manual TEC-5500 1.15

1. GENERAL

WARNING

• Do not perform pacing while using an ESU. Before using an ESU, turn

the defibrillator power off and remove disposable pads from the

patient. Otherwise, high frequency energy from the ESU causes

abnormal current to flow in the patient and causes serious electrical

burn, shock, or other injury. It also damages the defibrillator.

• Always monitor the ECG waveform with the ECG connection cable and

ECG electrodes.

• Confirm that there is no artifact on the ECG. If there is artifact on the

ECG, signals other than ECG are misrecognized to be QRS and

correct pacing cannot be performed.

• Do not touch the patient during pacing. Failure to follow this warning

may cause electrical shock.

• During pacing, do not touch the pads or connectors. Failure to follow

this warning causes electrical shock to the operator.

• The pacing rate must be determined by qualified medical personnel

based on the heart rate of the patient in a normal state.

• The pacing current must only be increased by qualified medical

personnel decision.

• Keep the current intensity as low as possible to minimize pain and

discomfort to the patient.

• Failure to follow the following warnings causes serious skin burn.

- Do not attach the pads over ECG electrode.

- Do not attach pads on the papilla or medicine on the patient’s body.

- Fit the pad closely to the body surface so that current flows

uniformly through the pad. This reduces the required pacing current

and pain and discomfort to the patient.

• The apex-posterior placement is not suitable for ECG monitoring or

AED analysis.

• The anterior-posterior placement is not suitable for defibrillation,

cardioversion, ECG monitoring or AED analysis. Use this placement

only for pacing.

• Never select “TEST”. “TEST” is for maintenance and the waveform

displayed on the screen is not the patient’s ECG. Failure to follow this

warning causes accidental pacing which is not synchronized with the

patient’s QRS wave.

• Do not change the sensitivity or ECG lead setting after pacing is

started. If one of these settings is changed, the pacing stops for 3

seconds. Failure to follow this warning may cause serious heart

attack.

• For 300 ms after the pacing pulse is output, no signal can be detected

as a QRS wave.

1.16 Service Manual TEC-5500

ECG Monitoring

1. GENERAL

CAUTION

• Check that the pacing pulse is effectively working by observing ECG

on the screen.

• When connecting the pad adaptor to the paddle connector, do not

bend or damage the connector pin. Otherwise energy cannot be

discharged to the pads.

• If the patient’s body is wet, thoroughly wipe the moisture off the skin

so that the pads do not short to each other.

WARNING

• When using a defibrillator together with the monitor, use Ag/AgCl

electrodes. Other types of electrodes, stainless steel in particular, will

adversely affect the ECG waveform by slowing the baseline recovery

on the monitor and result in no monitoring immediately following

defibrillation.

• False low heart rate indicators may occur with certain pacemakers

because of electrical overshoots.

• Keep pacemaker patients under close observation. The pacemaker

rate may be counted during cardiac arrest and certain arrhythmias. Do

not rely only on heart rate alarms and the displayed heart rate.

• The apex-posterior placement is not suitable for ECG monitoring or

AED analysis.

• The anterior-posterior placement is not suitable for defibrillation,

cardioversion, ECG monitoring or AED analysis. Use this placement

only for pacing.

• With the pacing pulse rejection ON, narrow width QRS of a premature

baby or infant cannot be detected correctly and the defibrillator may

miscount QRS. In this case, set the pacing pulse rejection to OFF.

• Turn the pacing pulse rejection to OFF when monitoring a child.

Otherwise child’s QRS may not be recognized.

CAUTION

• When the “Check ECG Electrodes” message is displayed, ECG cannot

be monitored and the ECG alarm does not function. Check the

electrode, ECG connection cable, electrode leads and connection

cable and if necessary, replace it with a new one.

• Turn the pacing pulse rejection to ON when monitoring a pacemaker

patient. Otherwise QRS and pacemaker spike may not be

distinguished and pacemaker failure may not be recognized.

Service Manual TEC-5500 1.17

1. GENERAL

SpO

Monitoring

WARNING

• Measurement may be incorrect in the following cases.

- increases abnormally

- When dye is injected in the blood

- When using an electrical surgery unit

- During CPR

- When there is body movement

- When there is vibration

- When measuring at a site with venous pulse

- When the pulse wave is small (insufficient peripheral circulation)

- When using an IABP (intra-aortic balloon pump)

• When not monitoring SpO2, disconnect the SpO2 adapter cable from

the defibrillator. Otherwise, noise from the probe sensor may interfere

and incorrect data is displayed on the screen.

CAUTION

• Only use the specified probes. Otherwise SpO2 cannot be monitored

properly and defibrillator performance may be degraded.

• If the “Check SpO2 unit”, “Check SpO2 probe site”, “SpO2 probe not

working”, “SpO2 module not working” or “SpO2 measurement

unstable” message appears frequently even when the probe is

attached on a site with appropriate thickness, the probe is

deteriorated. Replace the probe with a new one.

• When error messages which indicate faulty probe or SpO2 adapter

appear, stop monitoring and replace the probe or SpO2 adapter with a

new one.

CO2 Monitoring

WARNING

• When performing defibrillation or cardioversion during CO

monitoring with the CO2 sensor kit, remove the sensor from the

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

cable because the discharged energy may cause serious electrical

burn, shock or other injury.

• Before MRI examination, remove the CO2 sensor kit from the patient.

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 MRI operator’s manual.

1.18 Service Manual TEC-5500

1. GENERAL

CAUTION

• The measurement may be inaccurate when a patient with an extremely

high respiration rate or patient with irregular respiration is monitored.

Read the measured values carefully.

• Measured value may be incorrect when the operating temperature

changes greatly.

• When the “CO2 sensor not working” or “CO2 adapter abnormality”

message is displayed, check the CO2 sensor kit and replace it if

necessary. CO2 cannot be monitored while the message is displayed.

• Only use the specified CO2 sensor kit. Otherwise CO2 cannot be

monitored properly and defibrillator performance may be degraded.

• Obey the CAUTION label on the CO2 gas cylinder.

• After the lifetime of the CO2 gas cylinder expires, the measurement

accuracy cannot be guaranteed.

Alarms

Maintenance

WARNING

All alarms except for instrument alarm group 1 are suspended during

two minutes alarm suspension.

CAUTION

• When the alarm limit is set to OFF, there will be no alarm for that limit.

Be careful when you set the alarm to OFF.

• Alarms about a parameter do not occur until the measurement of the

parameter starts.

WARNING

• When performing energy discharge test, discharge the energy with the

paddles kept in the paddle holders. Do not discharge with the paddle

released in the air or when the paddles are shorted. Failure to follow

this warning may cause serious electrical shock and damage to the

defibrillator.

• If defibrillation or cardioversion is necessary during battery test,

cancel the battery test and operate the defibrillator on AC power. Do

not use battery power because the battery may have been discharged

by the battery test.

Service Manual TEC-5500 1.19

1. GENERAL

Storage

CAUTION

• Before maintenance (cleaning, disinfection), turn the defibrillator

power off, disconnect the power cord from the AC outlet and then

remove the battery from the defibrillator. Failure to follow this caution

may result in electrical shock and defibrillator malfunction.

• Before battery replacement, turn off the defibrillator power and

disconnect the AC power cord from the defibrillator. Otherwise, the

operator may get an electrical shock.

• Do not disassemble or repair the defibrillator. Disassembly and repair

must be performed by qualified service personnel.

CAUTION

• To prevent overheating, leave the defibrillator lying flat and do not

cover it.

• Store the disposable pads in an environment described on the pads

package. If stored in an environment other than specified, the pads

become unusable.

1.20 Service Manual TEC-5500

Specifications

Defibrillator

Output energy (across 50 Ω) 2, 3, 5, 7, 10, 15, 20, 30, 50, 70, 100, 150, 200 and 270 J

Energy accuracy 2 J: ±0.5 J

3 J: ±1 J

5 to 15 J: ±2 J

20 to 270 J: ±10%

Output waveform Biphasic, truncated exponential constant power (across 50 Ω)

Charging time

When powered by AC 100V to 240V: to 270 J, maximum 5 s

to 200 J, maximum 3 s

When powered by 90% of the rated mains voltage:

to 270 J, maximum 5 s

When powered by a fully charged new battery at 20°C ambient temperature:

to 270 J, maximum 5 s

to 200 J, maximum 3 s

After 15 discharges at 270 J with a fully charged new battery at 20°C ambient

temperature:

to 270J, maximum 5 s

1. GENERAL

Charging display Displays the charged energy value on the screen

Synchronized discharge Available

From the peak of R wave to the peak of discharge: within 60 ms

Maximum continuous charge/discharge cycles at 270 J

20 cycles: 3 cycles per minute with 1 minute cool down period after every 1

minute charge/discharge period

15 cycles: 3 cycles per minute with no cool down period

First phase Second phaseLoad resistance

(Ω)

25 67.3 3.85 15.5 3.62 50 41.1 6.35 12.7 3.62

75 29.5 8.86 11.0 3.62 100 22.9 11.4 9.81 3.62 125 18.8 13.9 8.96 3.62 150 15.9 16.4 8.29 3.62 175 13.8 18.9 7.76 3.62

Service Manual TEC-5500 1.21

Ipk1 (A) D1 (ms) Ipk2 (A) D2 (ms)

1. GENERAL

150

-10

02 64

10 12 14

current [A]

time [ms]

175

-10

02 64

10 12 14

current [A]

time [ms]

current [A]

-20

current [A]

-20

02 64

current [A]

-20

10 12 14

time [ms]

10 12 14

time [ms]

02 64

current [A]

-10

02 64

100

10 12 14

time [ms]

current [A]

-10

125

02 64

10 12 14

time [ms]

1.22 Service Manual TEC-5500

Noninvasive Pacing (TEC-5531 series only)

Pacing rate 30 to 180 pulse/min in 10 pulse/min steps

Output current 8 to 200 mA in 5 mA steps (Set on the System Setup screen)

Pacing modes Fixed and Demand Maximum load resistance Outputs 200 mA across 250 Ω, 120 mA across 500 Ω

External Paddle (ND552VC/VE/VK)

Paddle electrode size For adults: 70 ±3 × 106 ±3 (mm2)

For children: 45 ±3 × 53 ±3 (mm2)

Paddle cord length 2.0 m or more (when it is pulled by 18 N force)

Battery

Type Ni-MH battery

Nominal voltage: 12 V

Rated capacity: 2800 mAh

TEC-5521/5531 series: With fully charged new battery at 20°C ambient temperature

- Minimum 70 discharges at 270 J

- Minimum 150 minutes continuous monitoring

- Minimum 90 minutes fixed mode pacing (180 pulse/min, 200 mA)

With the fully charged new battery at 0°C, the defibrillator can perform:

- Minimum 50 discharges at 270 J

1. GENERAL

Clock Accuracy

At surrounding temeprature 25°C (77°F): ±3 min/month

At storage temperatures -20 to 70°C (-4 to 158°F): ±5 min/month

Environment

Operating temperature: 0 to 45°C (32 to 113°F)

Operating humidity: 30 to 95% (relative humidity, non-condensing)

Operating atmospheric pressure: 70 to 106 kPa

(Recording paper may jam, if it is wet.)

Storage temperature: -20 to 70°C (-4 to 158°F)

Storage humidity: 10 to 95% (relative humidity, non-condensing)

Storage atmospheric pressure: 50 to 106 kPa

Electromagnetic Compatibility

IEC 60601-1-2: 2001

IEC 60601-2-4: 2002

Service Manual TEC-5500 1.23

1. GENERAL

Safety

Safety standard IEC 60601-1: 1988

IEC 60601-1 Amendment 1: 1991

IEC 60601-1 Amendment 2: 1995

IEC 60601-2-4: 2002

According to the type of protection against electrical shock

Battery power: INTERNALLY POWERED EQUIPMENT

AC power: CLASS I EQUIPMENT

According to the degree of protection against electrical shock

DEFIBRILLATION-PROOF TYPE BF APPLIED PART:

External paddles, disposable pads, SpO2 adapter and CO2 sensor kit

DEFIBRILLATION-PROOF TYPE CF APPLIED PART:

Internal paddles, ECG connection cable

According to the degree of protection against harmful ingress of water: IPX1

According to the degree of safety of applicationin the presence of a 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

Mode of operation

Continuous operation with intermittent load: Operation at defibrillation mode

Continuous operation: All operation except above mentioned

Monitor

Effective display area 117.2(W) × 88.4(H) mm (5.7 inch)

Sweep length 97 mm

Sweep speed 25 mm/s, 50 mm/s Sensitivity 10 mm/1mV ±5% (sensitivity × 1)

Amplitude limit 40 mm

ECG Amplifier

Input signal PADDLE, I, II, III, aVR, aVL, aVF, V, AUX

Frequency response Through paddles: 0.5 to 20 Hz (-3 dB)

Through ECG connection cable: 0.05 to 150 Hz (-3 dB), at AC filter off

AUX: 0.05 to 150 Hz (-3 dB)

Input impedance Through paddles: ≥100 kΩ

Through ECG connection cable: ≥5 MΩ (at 10 Hz 1mV) AUX: ≥ 100 kΩ

CMRR ≥100 dB (against chassis ground) at AC filter On

AC filter Available (common with 50/60 Hz)

ON at ≥-20 dB, OFF

Pacing pulse rejection ON, OFF External ECG input sensitivity 10 mm/V ± 5% (sensitivity × 1)

Heart rate counting range Defibrillation or monitoring mode: 15 to 300 bpm

Pacing mode: 15 to 220 bpm

1.24 Service Manual TEC-5500

Recorder

Paper speed Real time/delayed ECG waveform recording: 50, 25 mm/s

Types of recording Manual recording:

real time/delayed waveform recording, report recording, event recording

Automatic recording:

record on charging after discharge, alarm recording, periodic recording

Rhythm Recognition Detector

We evaluated the rhythm recognition detector of the TEC-5500 series defibrillator using the official

electrocardiogram database provided by AHA (American Heart Association) and MIT (Massachusetts Institute of

Technology) and an electrocardiogram database of over 3000 electrocardiograms from hospitals in Japan. According

to our own evaluation, the rhythm recognition detector of the TEC-5500 series defibrillator meets the equivalent of

AAMI standards ANSI/AAMI DF-39-1993 3.3.18.

Power Requirements

Line voltage: 100 to 240 V

Line frequency: 50/60 Hz (automatic switching)

Power input: Intermittent load: 450 VA or less

Continuous load: 200 VA or less

DC (Battery)

Power voltage: 12V

Power consumption Intermittent load, 18A or less

Continuous load: 4.2 A or less

Charging time: 3 hours or less

1. GENERAL

Dimensions and Weight

Dimensions 290 (W) × 172 (H) × 355 (D) mm

Weight

TEC-5521 series defibrillator 6.1 kg (External paddles use, AC unit without battery)

5.3 kg (Pad adaptor use, AC unit without battery)

TEC-5531 series defibrillator 6.3 kg (External paddles use, AC unit without battery)

5.5 kg (Pad adaptor use, AC unit without battery)

Service Manual TEC-5500 1.25

1. GENERAL

Panel Description

Front Panel

* When DSI interface unit is connected

* When DSI/AUXOUT interface

unit is connected

Name

LCD display

Energy/Mode Select control

Microphone

SYNC button/lamp

CHARGE/AED button

DISCHARGE button

DISCHARGE lamp

ECG input connector

/CO2 connector

SpO

AUXOUT connector

Paddle connector

1.26 Service Manual TEC-5500

1. GENERAL

No. Name

Record key

Event key

ECG lead key

ECG sensitivity key

Silence alarms key

Multi-function key

AC lamp

Battery charging lamp

Battery charge complete lamp

15 16

Top Panel (TEC-5531 Series Only)

Name

PACING R ATE U p ke y

PACING R ATE D own key

PACING OUTPUT Up key

PACING OUTPUT Down key

START/STOP key

PULSE lamp

Service Manual TEC-5500 1.27

1. GENERAL

External Paddles

Name

CONTACT lamp

CHARGE button

CHARGE lamp

DISCHARGE buttons

Left Side Panel

Name

Recording paper exit

Door release lever

SD card slot

Battery pack holder

1.28 Service Manual TEC-5500

Rear Panel

1. GENERAL

Name

AC SOURCE socket

Optional unit connector

Service Manual TEC-5500 1.29

1. GENERAL

Composition

Standard Components

TEC-5521C

TEC-5521E

TEC-5521K

HV-552V Biphasic HV UNIT

UR-0311 HV CPU board

UR-0313 MOTHER board

UR-0314 CPU board

UR-0315 TEST LOAD board

UR-0316 KEY board

WS-551V Recorder unit

RG-501X Paper feeder

CD-0004 Motor assy

UR-0320 REC-EXT board

CY-0026 PRE assy

CY-0029 Main unit assy

ND-552VC External paddle for C version

ND-552VE External paddle for E versino

ND-552VK External paddle for K version

ND-552X External paddle assy

ND-611V Adult plate assy

1.30 Service Manual TEC-5500

1. GENERAL

TEC-5531C

TEC-5531E

TEC-5531K

HV-553V Biphasic HV Unit

UR-0311 HV CPU board

UR-0313 MOTHER board

UR-0314 CPU board

UR-0315 TEST LOAD board

UR-0316 KEY board

WS-551V Recorder Unit

RG-501X Paper feeder

CD-0004 Motor assy

UR-0320 REC-EXT board

UR-0304 Pacer board

CY-0026 PRE assy

CY-0029 Main unit assy

ND-552VC External paddle for C version

ND-552VE External paddle for E version

ND-552VK External paddle for K version

ND-552X Extarnal paddle assy

ND-611V Adult plate assy

Service Manual TEC-5500 1.31

1. GENERAL

Options

JC-761V External ECG cable

JC-762V Connection cable

JC-763V Connection cable

ND-612V Pediatric electrode, 44 mm φ

ND-762V Internal paddle electrode, 25 mm φ

ND-763V Internal paddle electrode, 35 mm φ

ND-764V Internal paddle electrode, 45 mm φ

ND-765V Internal paddle electrode, 55 mm φ

ND-766V Internal paddle electrode, 65 mm φ

ND-767V Internal paddle electrode, 75 mm φ

BC-765V ECG connection cable (IEC, 5 leads)

BC-765VA ECG connection cable (AHA, 5 leads)

JC-755V Pad adapter

JC-765V Pad adapter

KD-028A Cart

DI-001A Cart tray assembly

YZ-024H9 Battery pack, NKB-301V

YZ-025H0 Paste holder kiy

1.32 Service Manual TEC-5500

YZ-024H3 TEC Accessory set (100V/IEC)

YZ-024H4 TEC Accessory set (200V/IEC)

YZ-024H5 TEC Accessory set (100V/AHA)

YZ-024H6 TEC Accessory set (200V/AHA)

BC-763V ECG connection cable (IEC, 3 leads) for YZ-04H3/YZ-024H4

BC-763VA ECG connection cable (AHA, 3 leads) for YZ-04H5/YZ-024H6

QI-552V DSI Interface unit

UR-0317 DSI Float board

1. GENERAL

QI-553V DSI/AUXOUT Interface unit

UR-0318 AUX OUT board

Service Manual TEC-5500 1.33

1. GENERAL

Board/Unit Location

Recorder unit

Mother board

CPU board

LCD unit

Test load board

HV capacitor

AC/DC unit

Biphasic HV unit

KEY board

Pacer board (TEC-5531 series only)

DSI interface unit (option)

1.34 Service Manual TEC-5500

Block Diagram

1. GENERAL

Service Manual TEC-5500 1.35

1. GENERAL

This page is intentionally left blank.

1.36 Service Manual TEC-5500

Section 2 Troubleshooting

How to Troubleshoot ............................................................................................................2.1

Error Code ...........................................................................................................................2.2

Defibrillation .............................................................................................................. 2.3

Operation Panel .........................................................................................................2.4

Communication ......................................................................................................... 2.5

Data Error..................................................................................................................2.6

Pacing (TEC-5531 Series Only).................................................................................2.6

Message..............................................................................................................................2.7

Troubleshooting ...................................................................................................................2.9

General ...................................................................................................................... 2.9

Defibrillation ............................................................................................................ 2.10

Monitoring ............................................................................................................... 2.11

Recording ................................................................................................................2.13

Battery .................................................................................................................... 2.13

Pacing (TEC-5531 Series Only)............................................................................... 2.14

Service Manual TEC-5500 2C.1

This page is intentionally left blank.

2C.2 Service Manual TEC-5500

How to Troubleshoot

2. TROUBLESHOOTING

Use this section to locate, identify and solve a problem in the defibrillator or an

error message displayed on the screen. The troubleshooting tables in this section

are divided into general problems and displayed error messages.

1. Determine which troubleshooting table to use. Also refer to “Messages and

Troubleshooting” in Section 10 of the Operator’s manual.

2. In the “Error Code”, “Message” or “Problem” column, find the trouble item

that matches the problem or error message.

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

recommended in the “Action” column).

4. If the problem or error message is not solved, do the next action recommended

in the “Action” column. (If this does not solve the problem, do the next

recommended sections.)

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

distributor or representative.

NOTE

Before contacting your NK distributor or representative for technical

support, please complete a copy of the Maintenance Check Sheet

(the original copy is provided at the end of the Section 4

“Maintenance”), and if possible, provide additional detailed

information on the problem. Send the complete copy of the

Maintenance Check Sheet to your NK distributor or representative.

This will allow your NK distributor or representative to provide you

with the best support.

Service Manual TEC-5500 2.1

2. TROUBLESHOOTING

Error Code

The defibrillator displays an error code if it detects an error when the power is

turned on and during operation.

NOTE

• For problems that are not reproducible, call up the System Setup

screen and print the REPORT HISTORY. Refer to the Operator's

Manual for the detail of this procedure. The error code will be lost

when the power is turned off.

• Always check all the cable connections in the defibrillator before

performing the action recommended in the troubleshooting tables in

this section. This is because a loose cable connection can cause the

defibrillator to display the error code.

An error code is displayed. ERROR AXXX ERROR CXXX ERROR DXXX ERROR KXXX ERROR PXXX

Turn off the instrument, then turn on the instrument and do the same operation.

Is the error code displayed?

Ye s Ye s

The error code is saved in the "Report History"?

Error AXXX, CXXX, DXXX and KXXX: Perform charge/discharge test. Error PXXX Perform pacing test.

Is the error code displayed?

Refer to error code description for detail

2.2 Service Manual TEC-5500

Ye s

Instrument is normal. But find the cause of the error code.

2. TROUBLESHOOTING

Defibrillation

Error Code Meaning Possible Cause Action

A501

A512

A513

A524

A527

A529

A556

A566

A585

A587

A597

During standby mode, the HV capacitor

has more than 1 J energy more than one

continuous second.

When charging is started, the HV

capacitor energy did not reach 1 J

within 2 seconds.

The energy is not reached to the

selected energy within the specified

time.

After charging, the capacitor energy

falls the specified value for each

energy.

After charging, the capacitor energy is

about 15% above the selected energy.

After charging, the actual charged

energy is different from the selected

energy.

Internal discharge takes more than 20

seconds to complete.

HV capacitor's voltage did not reach its

target value 20 seconds after adjusted

internal discharge.

The voltage of the HV capacitor

exceeds its specified voltage.

When the disposable pad is used,

12.5% or more of the charged energy

remains in the HV capacitor 2 seconds

after external discharge.

When discharging, the second phase

pulse is not output.

Faulty biphasic HV unit.

Faulty HV capacitor.

Faulty biphasic HV unit.

Faulty HV capacitor.

Faulty biphasic HV unit.

Faulty HV capacitor.

Faulty biphasic HV unit.

Faulty CPU board.

Faulty biphasic HV unit.

Faulty CPU board.

Faulty biphasic HV unit.

Faulty CPU board.

Faulty biphasic HV unit.

Faulty CPU board.

Discharge HV capacitor and

replace the biphasic HV unit.

Replace the biphasic HV unit.

Replace the HV capacitor

Replace the biphasic HV unit.

Replace the HV capacitor

Replace the biphasic HV unit.

Replace the HV capacitor

Replace the biphasic HV unit.

Replace the CPU board.

Replace the biphasic HV unit.

Replace the CPU board.

Replace the biphasic HV unit.

Replace the CPU board.

Replace the biphasic HV unit.

Replace the CPU board.

Service Manual TEC-5500 2.3

2. TROUBLESHOOTING

Operation Panel

NOTE

• When the power is on, the following key switch is pressed and held for more than 10

seconds, the error code of each key is displayed.

• If the key was not pressed and held, check each key function with the System

Maintenance screen. Refer to Section 4 “System Maintenance Screen - Check Hardware

Screen - Check Key Screen”.

Error Code Meaning Possible Cause Action

The ECG lead key error is detected.

The ECG sensitivity key error is

detected.

The silence alarm key error is

detected.

The multi-function key error is detected.

The record key error is detected.

The event key error is detected.

The SYNC button error (front panel) is

detected.

The CHARGE button error (front panel)

is detected.

The DISCHARGE button error (front

panel) is detected.

The CHARGE button error (apex

external paddle) is detected.

The DISCHARGE button error (apex

external paddle) is detected.

The DISCHARGE button error

(sternum external paddle) is detected.

The PACING START/STOP key error

is detected.

PACING RATE Up key error

PACING RATE Down key error

PACING CURRENT Up key error

PACING CURRENT Down key error

Faulty key board.

Faulty CPU board.

Faulty key board.

Faulty CPU board.

Faulty key board.

Faulty CPU board.

Faulty key board.

Faulty CPU board.

Faulty key board.

Faulty CPU board.

Faulty key board.

Faulty CPU board.

Faulty key board.

Faulty CPU board.

Faulty key board.

Faulty CPU board.

Faulty key board.

Faulty CPU board.

Faulty external paddles.

Faulty CPU board.

Faulty external paddles.

Faulty CPU board.

Faulty external paddles.

Faulty CPU board.

Faulty pacer board.

Faulty CPU board.

Faulty pacer board.

Faulty CPU board.

Faulty pacer board.

Faulty CPU board.

Faulty pacer board.

Faulty CPU board.

Faulty pacer board.

Faulty CPU board.

Replace the key board.K501

Replace the

Replace the key board.K502

Replace the

Replace the key board.K503

Replace the

Replace the key board.K504

Replace the

Replace the key board.K505

Replace the

Replace the key board.K506

Replace the

Replace the key board.K508

Replace the

Replace the key board.K509

Replace the

Replace the external paddles.K511

Replace the

Replace the external paddles.K512

Replace the

Replace the external paddles.K513

Replace the

Replace the pacer board.K516

Replace the

Replace the pacer board.K517

Replace the

Replace the pacer board.K518

Replace the

Replace the pacer board.K519

Replace the

Replace the pacer board.K520

Replace the

CPU

key

CPU

board.

board.K507

board.

2.4 Service Manual TEC-5500

2. TROUBLESHOOTING

Communication

Error Code Meaning Possible Cause Action

C501

C502

C507

C511

C512

C513

When the CO2 sensor kit is connected,

CO2 data is not received.

When the SpO2 adapter is connected,

SpO2 data is not received.

The battery CPU does not transfer the

battery data to the main CPU for more

than 10 seconds.

When the power is turned on, the

communication error between the RTC

(real time clock) and main CPU is

detected for one second.

The sub CPU does not update the data

in the DPRAM for one second.

The voice CPU does not update the data

in the DPRAM for one second.

The DSI CPU does not update the data

in the DPRAM for one second.

The pacing CPU does not update the

data in the DPRAM for one second.

The HV CPU does not update the data

in the DPRAM for one second.

Faulty CO2 sensor kit.

Faulty DSI Float board.

Faulty AUX OUT board.

Faulty CPU board.

Faulty SpO2 adapter.

Faulty DSI Float board.

Faulty AUX OUT board.

Faulty CPU board.

Faulty mother board.

Faulty CPU board.

Faulty DSI Float board.

Faulty AUX OUT board.

Faulty CPU board.

Faulty pacer board.

Faulty CPU board.

Faulty biphasic HV unit.

Faulty CPU board.

Replace the

Replace the CPU board.

Replace the Sp

Replace the

Replace the CPU board.

Replace the mother board.C505

Replace the

Replace the pacer boardC514

Replace the

Replace the biphasic HV unit.C515

Replace the

CO2 sensor kit.

DSI Float board.

AUX OUT board.

DSI Float board.

AUX OUT board.

CPU

DSI Float board.

AUX OUT board.

CPU

O2 adapter.

board.

Service Manual TEC-5500 2.5

2. TROUBLESHOOTING

Data Error

Error Code Meaning Possible Cause Action

D501

D511

D512

Data in the DRAM or flash memory is

not read out correctly (summation

error).

When the power is turned on, settings in

the System Maintenance screen do not

match the backup data in the flash

memory.

When the power is turned on, damaged

waveform report data in the flash

memory is detected.

Faulty DRAM or flash

memory.

After settings in the System

Maintenance screen are

changed, the “Flash Save”

procedure is not performed.

During power off sequence,

power down occurs.

Faulty CPU board.

During power off sequence,

power down occurs.

Faulty CPU board.

Replace the CPU board.

Perform the “Flash Save”

procedure in the System

Maintenance screen.

Delete the report data in the

System Setup screen.

Replace the CPU board.

Delete the report data in the

System Setup screen.

Replace the CPU board.

Pacing (TEC-5531 Series Only)

Error Code Meaning Possible Cause Action

P502 Pulse width of the pacing output pulse is

larger or smaller than the selected width.

P503 Current intensity of the pacing output

pulse is larger than the selected value.

P504 Current intensity of the pacing output

pulse is smaller than the selected value.

P505 Pacing output that is not requested by the

CPU is detected.

P506 Pacing output voltage exceeds the upper

limit.

P511 Error was detected in the short-mode of

the transistor.

Faulty pacer board.

Faulty CPU board. Replace the CPU board.

Faulty pacer board.

Faulty CPU board. Replace the CPU board.

Faulty pacer board.

Faulty CPU board. Replace the CPU board.

Faulty pacer board.

Faulty CPU board. Replace the CPU board.

Faulty pacer board.

Faulty CPU board. Replace the CPU board.

Faulty pacer board.

Replace the pacer board.

2.6 Service Manual TEC-5500

2. TROUBLESHOOTING

Message

Message Meaning Possible Cause Action

Battery charge

timed out

Battery charging

error

Battery discharge

timed out

Capacitor test fail

CO2 module not

working

CO2 module

disconnected

ERROR AXXX

ERROR CXXX

ERROR DXXX

ERROR KXXX

ERROR PXXX

FET error

High voltage

monitor error

During battery test, the battery

was not fully charged 5 hours

after battery charging started.

During battery test

An error occurred in battery

charging

During battery test

The voltage did not decrease to

the specified level 4 hours after

battery discharging started.

Capacitor test failed. Faulty biphasic HV unit.

CO2 module is faulty.

CO2 cable is disconnected from

the defibrillator.

Faulty HV

Communication error

Faulty ROM/RAM

Faulty keys

Faulty pacing unit

The circuit to measure remaining

battery charge is faulty.

Faulty high voltage monitor circuit. Faulty biphasic HV unit or CPU

Faulty battery pack.

Faulty mother board.

Faulty battery pack.

Faulty mother board.

Faulty battery pack.

Faulty mother board.

Faulty CPU board.

Faulty HV capacitor.

Faulty CO2 sensor kit.

Faulty the DSI Float board or

AUX OUT board.

CO2 cable is disconnected from

the DSI Interface Unit or

DSI/AUX OUT Interface Unit.

Faulty DSI Float board or AUX

OUT board.

---

Faulty mother board.

board.

Replace the battery pack.

Replace the mother board.

Replace the battery pack.

Replace the mother board.

Replace the battery pack.

Replace the mother board.

Replace the CPU board.

Replace the biphasic HV unit.

Replace the HV capacitor.

Replace the

Replace the DSI Float board or

AUX OUT board.

Press the Silence alarm key to

turn off the message. If the

message still appears, the DSI

Float board or AUX OUT board

is faulty. Replace the DSI Float

board or AUX OUT board.

Turn off the defibrillator, then turn

on and do the same operation. If the

message still appears, refer to the

table for each error code.

Replace the mother board.

Turn off the defibrillator, then turn

on and do the same operation. If the

message still appears, the biphasic

HV unit or CPU board is faulty.

Replace the biphasic HV unit or

CPU board.

CO2

sensor kit.

Service Manual TEC-5500 2.7

2. TROUBLESHOOTING

Message Meaning Possible Cause Action

Overheating The high voltage charge circuit

heats up.

Power abnormality Input power voltage is too high. Not specified battery is used. Only use the NKB-301V battery.

Replace battery Battery test result is 0 to 49%.

The

working

SpO2 module

disconnected

defibrillator

battery should be replaced with a

new one.

SpO2 module is faulty.

SpO2 cable is disconnected from

the defibrillator.

judged that the

The

defibrillator

frequently.

Faulty biphasic HV unit. Replace the biphasic HV unit.Relay drive error Faulty biphasic HV unit.

Faulty CPU board. Replace the CPU board.

Faulty battery pack. Replace the battery.

Faulty the SpO2 adapter. Replace the SpO2 adapter.SpO2 module not

Faulty the DSI Float board or

AUX OUT board.

SpO2 cable is disconnected from

the DSI interface unit or

DSI/AUX OUT interface unit.

Faulty DSI Float board or AUX

OUT board.

discharged too

Turn off the defibrillator and leave

the defibrillator for 10 minutes,

then turn on.

Replace the DSI Float board or

AUX OUT board.

Press the Silence alarm key to

turn off the message. If the

message still appears, the

Float board or AUX OUT board

is faulty. Replace the DSI Float

board or AUX OUT board.

DSI

2.8 Service Manual TEC-5500

Troubleshooting

General

Problem Possible Cause Action

2. TROUBLESHOOTING

The defibrillator heats up. The defibrillator is used for many

hours.

No operation when the defibrillator is

turned on.

characters are not seen.

The power cord is disconnected.

The battery is not installed. Install the specified battery.

Faulty battery

Remaining battery charge is low. Charge the battery.

Faulty key board. Replace the key board.

Faulty mother board. Replace the mother board.

Faulty AC/DC unit. Replace the AC/DC unit.

Faulty LCD inverter board. Replace the LCD inverter board.Screen is dim. Waveform and

Faulty LCD unit. Replace the LCD unit.

Faulty mother board. Replace the mother board.

Faulty CPU board. Replace the CPU board.

There is no abnormality in the

defibrillator. Turn off the defibrillator

and disconnect the power cord.

Firmly connect the power cord to the

AC outlet and the defibrillator.

Replace the battery with a new one

(NKB-301V).

The printed data is JAN/01/80. The backup battery is almost

discharged.

The report data are not saved.

All settings set in the Setup screen and

System Setup screen return to the

default settings.

On the Setup screen, the report data

were deleted.

During power off sequence, power

down occurs.

Faulty CPU board. Replace the CPU board.

During power off sequence, power

down occurs.

Faulty CPU board. Replace the CPU board.

Replace the CPU board. (Under normal

use condition, the backup battery

lifetime is about 6 years.)

Deleted data cannot be recovered.

Do not disconnect the AC power cord

or do not remove the battery while the

"Shutdown" message is displayed.

Do not disconnect the AC power cord

or do not remove the battery while the

"Shutdown" message is displayed.

Service Manual TEC-5500 2.9

2. TROUBLESHOOTING

Problem Possible Cause Action

When the battery is installed, the

defibrillator suddenly changes to

battery operation.

When the battery is not installed, the

defibrillator power suddenly drops.

The date and time printed on the

recording paper is incorrect.

Defibrillation

Power voltage changed. Check that the AC power cord is

connected to the defibrillator. If the

trouble is not solved, the AC/DC unit or

AC power cord faulty. Replace the

AC/DC unit or AC power cord.

--- Set the date and time on the Setup

screen. Refer to Section 3 of the

operator's manual

The backup battery for the clock is

discharged.

Faulty CPU board. Replace the CPU board.

Replace the backup battery.

Problem Possible Cause Action

The defibrillator self-discharges the

energy during charging.

Cannot switch to synchronized mode.

In battery operation, the battery is

almost discharged.

Faulty biphasic HV unit.

(Error code appears on the screen.)

Operate the defibrillator on AC power

and recharge the battery. The battery

is automatically charged when the

defibrillator is connected to AC power.

When an error code appears on the

screen, refer to the Defibrillation table

in the Error Code section.

Appropriate lead is not selected. Change to the appropriate lead.

You tried to perform synchronized cardioversion with the PADDLE lead

On the Paddle Setup screen, set the

“sync by paddle lead” to ON. but synchronized cardioversion with the PADDLE lead is set to OFF on the Paddle Setup screen.

Faulty key board. Replace the key board.

Faulty CPU board. Replace the CPU board.

“0 J” is printed on the defibrillation

report recording.

TTR is 15 Ω or less

TTR is 255 Ω or more.

Check that the paddles do not touch

each other.

Press the paddles on the patient

firmly.

2.10 Service Manual TEC-5500

Monitoring

ECG

2. TROUBLESHOOTING

Problem Possible Cause Action

Dotted lines appear instead of the ECG

waveforms.

No sync sound Faulty CPU board. Replace the CPU board.

No alarm is generated

No sound Faulty speaker or speaker cable. Replace the speaker

An ECG electrode is detached.

An electrode lead is disconnected from

the electrode.

The ECG connection cable is

disconnected from the defibrillator.

An electrode lead is faulty.

Faulty mother board.

The SILENCE ALARMS key is

pressed.

On the Setup screen, alarm is set to

OFF.

Faulty CPU board. Replace the CPU board.

Faulty key board. Replace the key board.

Faulty CPU board. Replace the CPU board.

Remove the cause of the trouble. If the

trouble is not solved, the mother board

is fault. Replace the mother board.

Press the SILENCE ALARMS key

again.

On the Setup screen, set the

upper/lower limit of each vital alarm.

SpO

Problem Possible Cause Action

SpO2 value is not displayed on the

screen.

The SpO disconnected from the SpO connector.

2 adapter cable is

2/CO2

The SpO2 probe is disconnected from the SpO

2 adapter.

Cable discontinuity in SpO2 adapter or probe

SpO2 probe attachment to the patient is loose.

Dotted lines appear instead of the pulse

Faulty

SpO2

probe. Replace the

waveforms.

SpO2

Faulty

adapter. Replace the

Faulty DSI Float board. Replace the DSI Float board.

Faulty AUX OUT board. Replace the AUX OUT board.

Deformed or damaged SpO2 probe Probe was disinfected in a way other

than the specified way.

SpO2 probe is repeatedly used.

Connect the SpO SpO

2/CO2 connector.

2 adapter to the

Firmly connect the probe to the SpO adapter.

Replace the SpO2 adapter or probe.

Firmly attach the probe to the patient.

SpO2

probe.

SpO2

adapter.

Replace the probe with a new one. Use the specified disinfecting method.

Replace the probe with a new one when its lifetime is over.

Service Manual TEC-5500 2.11

2. TROUBLESHOOTING

Problem Possible Cause Action

The measured value is not displayed on the screen.

The red LED on the CO2 adapter blinks.

The CO2 sensor kit cable is disconnected from the

SpO2/CO2

Connect the CO

/ CO2 connector.

SpO

2 sensor kit cable to the

connector.

CO2 gas is in the inspiration. With the CO2 sensor kit, measurements

are based on the assumption of no CO gas in the inspiration. Do not connect a Jackson Rees respiration circuit or Mapleson D respiration circuit to the patient. Measurement cannot be done correctly.

The airway adapter is dirty.

Replace the airway adapter with a new one.

The measurement is preformed where atmospheric pressure is low, such as at

Consider the atmospheric pressure when making evaluations.

high altitude.

CO2 sensor or CO2 adapter is faulty.

Replace the CO

2 sensor or CO2 adapter

with a new one.

The respiration has not been detected for longer than 20 s.

The red LED blinks when the respiration has not been detected for longer than 20 s regardless of the alarm setting on the defibrillator.

2.12 Service Manual TEC-5500

Recording

2. TROUBLESHOOTING

Problem Possible Cause Action

Printing is blurred. Dots are missing. The specified recording paper is not

used.

The thermal head is dirty. Clean the thermal head with the head

There is no printing. The recording paper is not loaded. Load new recording paper.

Recording unit door is not properly

closed.

The recording paper is set with the

wrong side facing up.

The thermal head heats up. Stop recording and cool the

Faulty key board. Check the key function and recorder

Faulty recorder.

Faulty CPU board.

Use the specified recording paper.

cleaning pen. If the trouble not solved,

the recorder unit is faulty. Replace the

recorder unit.

Close the door until it clicks.

Set the recording paper correctly.

defibrillator down in a cooler place.

with the System Maintenance screen. If

the recorder check is passed, the key

board is faulty. Replace the key board.

Check the recorder in the System

Maintenance screen.

Printing is thick. The recording unit temperature is too

hot.

The specified paper is not used. Use the specified recording paper.Paper feeding speed is unstable.

The recorder unit is not working. Replace the recorder unit.

Faulty mother board. Replace the mother board.

Battery

Problem Possible Cause Action

The battery charging lamp is blinking.

The defibrillator and battery are too

hot.

Cool the defibrillator down in a cooler

place. If the trouble is not solved, the

recorder unit or CPU board is faulty.

Replace the recorder unit or CPU

board.

Bring the defibrillator to a cool place.

When the battery temperature

decreases, charging resumes.

Faulty battery Replace the battery with a new one.After starting battery charging, the

charging stops. (neither battery

charging lamp nor battery charge

complete lamp lights.)

Service Manual TEC-5500 2.13

Charging circuit is not working. Replace the mother board.

2. TROUBLESHOOTING

Pacing (TEC-5531 Series Only)

Problem Possible Cause Action

Although the PULSE lamp is lit, pacing

pulse does not appear on the ECG.

Although the START/STOP lamp is lit,

pacing does not start.

Faulty pacer board. Replace the pacer board.

Faulty CPU board. Replace the CPU board.

Pacing current is set to 0 mA. Set the appropriate pacing current with

the PACING OUTPUT control.

In DEMAND mode, selected pacing

rate is slower than the patient heart rate.

Faulty pacer board. Replace the pacer board.

Faulty CPU board. Replace the CPU board.

Set the pacing rate appropriate for the

patient heart rate. When the patient

heart rate is slower than the selected

pacing rate, pacing pulse is output

automatically.

2.14 Service Manual TEC-5500

Section 3 Disassembly

Before You Begin ................................................................................................................. 3.1

Warnings, Cautions and Notes .................................................................................. 3.1

Required Tools ........................................................................................................... 3.2

Connection Diagram ............................................................................................................3.3

Removing the Lower Casing ................................................................................................3.5

Removing the Paddles .............................................................................................. 3.5

Removing the Battery Pack ...................................................................................... 3.5

Removing the Lower Casing ...................................................................................... 3.6

Removing the CPU Board and Mother board ....................................................................... 3.7

Removing the CPU Board .........................................................................................3.7

Removing the Mother Board .....................................................................................3.8

Removing the Front Chassis ...............................................................................................3.9

Removing the Side Casing ................................................................................................ 3.10

Removing the Recorder Unit ................................................................................... 3.11

Removing the Biphasic HV Unit ........................................................................................ 3.12

Removing the HV Capacitor .............................................................................................. 3.14

Attaching the HV Capacitor ..................................................................................... 3.15

Removing the AC/DC Unit ................................................................................................. 3.16

Removing the Test Load Board .......................................................................................... 3.17

Removing the Pacer Board (TEC-5531 Series Only) ......................................................... 3.18

Removing the LCD Unit ..................................................................................................... 3.19

Removing the Key Board ...................................................................................................3.20

Removing the Energy/Mode Select Control Knob.................................................... 3.20

Removing the Speaker ...................................................................................................... 3.21

Removing the Paddle Lock Springs ................................................................................... 3.22

Removing the AC SOURCE Socket .................................................................................. 3.23

Service Manual TEC-5500 3C.1

This page is intentionally left blank.

3C.2 Service Manual TEC-5500

Before You Begin

Warnings, Cautions and Notes

3. DISASSEMBLY

The procedures in this section explain how to remove, replace and install major

components in the defibrillator.

WARNING

• The HV capacitor can store lethal amounts of energy. Discharge this

capacitor before touching any high voltage component (HV capacitor,

biphasic HV unit, paddle socket or paddles).

• Removal and replacement of any components in the defibrillator

should only be done by qualified service personnel.

• To avoid the possibility of injury to yourself or damage to the

defibrillator, do not install or remove any component while the power

is on. When disassembling, make sure that the defibrillator is off, the

AC power cord is disconnected from the defibrillator and the battery

pack is removed from the defibrillator.

There are several high voltage units inside the defibrillator:

LCD backlight, high voltage capacitor, pacing DC/DC converter and

switching regulator.

CAUTIONS

• To avoid accidental discharge of static electricity which could damage

the components of the defibrillator, use a grounded wrist strap when

installing or removing any component of the defibrillator.

• Fuses on the main board and AC/DC unit cut off the power when an

abnormality occurs in the defibrillator. Eliminate the malfunction

before replacing the fuse. Use the correct fuse only.

• Use only parts recommended by Nihon Kohden to assure maximum

performance from your defibrillator.

Service Manual TEC-5500 3.1

3. DISASSEMBLY

NOTE

When the mother board, CPU board, biphasic HV unit, HV capacitor is

replaced with a new one, do the following adjustment. Refer to

“System Maintenance Screen - Adjust AD Screen” in Section 4.

Mother board:

- ECG sensitivity and offset

- Battery voltage setting

- Paddle contact impedance threshold

CPU board:

- ECG sensitivity and offset

- Charge energy, charge time, delivered energy and TTR

- Battery voltage setting

- Paddle contact impedance threshold

Biphasic HV unit:

- Charge energy, charge time, delivered energy and TTR

- Paddle contact impedance threshold

HV capacitor:

- Charge energy, charge time, delivered energy and TTR

Required Tools

• Anti-static bench mat

• Wrist ground strap

• Phillips screwdriver (insulated type, for M3 and M4 screws)

• Hex socket driver (for 3 mm spacer bolt and nut)

• Allen wrench

• Tweezers

• Short bar

3.2 Service Manual TEC-5500

Connection Diagram

3. DISASSEMBLY

TEC-5531 series only

Service Manual TEC-5500 3.3

3. DISASSEMBLY

CNA605

CNA411

CNA603

CNA002

CNP401

CNA602

CNA501

CNA604 CNA601

CNA304

CNA302

CNA303

CNA 501

CNA001

CNA004

CNP011

CNP132

CNA901

CNP131 CNA022

CNA003

CNA201

CNP301

CNA192

CNA191

CNA153

TEC-5531 with optional interface unit

3.4 Service Manual TEC-5500

Removing the Lower Casing

3. DISASSEMBLY

Removing the Paddles

Paddle connector

Paddle release knob

1. Make sure that the power of the defibrillator is turned off.

2. Disconnect the AC power cord from the AC outlet and

defibrillator.

3. Remove the paddles. To remove the paddles, press and

hold the paddle release knob on the paddle connector and

pull the paddle connector toward you.

CAUTION

When removing the paddle, do not pull anywhere

other than the paddle connector. Otherwise, the

paddle connector or paddle cable may be damaged.

4. If the SD card is inserted, remove it. To remove the SD

card, push it in, then pull it out.

Battery pack

Battery pack holder cover

Removing the Battery Pack

SD card

1. Turn the knob on the battery holder cover

counterclockwise and remove the battery pack holder

cover.

2. Disconnect the battery cable by holding the battery cable

connector and remove the battery from the defibrillator.

Service Manual TEC-5500 3.5

3. DISASSEMBLY

Lower casing

Interface unit

CNA605

Removing the Lower Casing

1. Remove the seven M4×10 binding head screws (BH) and two M3×8 binding

head screws.

2. Remove the lower casing from the upper casing.

If the optional DSI interface unit or DSI/AUXOUT interface unit is installed,

1) Remove the two M3×8 binding head screws.

2) Remove the interface unit and disconnect the CNA605 cable from the

defibrillator.

3.6 Service Manual TEC-5500

Removing the CPU Board and Mother board

3. DISASSEMBLY

Removing the CPU Board

Film connector

Film cable

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

“Removing the Lower Casing”.

2 Remove the six M3×8 pan screws with washers (PS) which secure the main

shield plate 1 to the CPU board.

3. Disconnect the following cables:

• CNA302 cable: Connects to the recorder unit (thermal head)

• CNA304 cable: Connects to the LCD INV (inverter) board

• CNA303 film cable: Connects to the LCD unit

• CNA601 film cable: Connects to the KEY board

• CNA602 cable: Connects to the paddle socket

• CNA603 cable: Connects to the biphasic HV unit

• CNA604 film cable: Connects to the Pacer board (TEC-5531 series only)

To remove the film cable from the film cable connector, gently release the

lock of the film cable connector with a small flat blade driver and your finger

as shown in the expanded illustration. Be careful because the film cable

connector is easily damaged.

4. Remove the CPU board.

NOTE

When the CPU board is replaced with a

new one, do the following adjustment.

Refer to “System Maintenance Screen -

Adjust AD Screen” in Section 4.

- ECG sensitivity and offset

- Charge energy, charge time, delivered

energy and TTR

- Battery voltage setting

- Paddle contact impedance threshold

CNA604

CNA601

CPU board

Main shield plate 1

CNA303

CNA304

CNA602

CNA302

CNA603

Service Manual TEC-5500 3.7

3. DISASSEMBLY

Removing the Mother Board

When the CPU board is removed, you can remove the mother board.

1. Remove the main shield plate 2 and shield sheet.

2. Remove the six M3×8 spacer bolts which secure the mother board to the upper

casing.

3. Remove the two M3×8 binding head screws (BH) which secure the ECG

connector board to the front chassis

4. Disconnect the following cables:

• CNA501 cable: Connects to the battery pack, AC/DC unit and biphasic HV

unit

• CNP401 cable: Connects to the biphasic HV unit

• CNA901 cable: Connects to the recorder unit (REC-EXT board)

5. Remove the mother board from the upper casing.

Main shield plate 2

Shield sheet

CNP401

Mother board

ECG connector board

CNJ101

CNA901

CNA501

NOTE

When the mother board is replaced with a new one, do the following

adjustment. Refer to “System Maintenance Screen - Adjust AD

Screen” in Section 4.

Mother board:

- ECG sensitivity and offset

- Battery voltage setting

- Paddle contact impedance threshold

3.8 Service Manual TEC-5500

Removing the Front Chassis

The HV capacitor can store lethal amounts of energy. Discharge this

capacitor before touching any high voltage component (HV capacitor,

biphasic HV unit, paddle socket or paddles).

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

“Removing the Lower Casing”.

2. Remove the CPU board and mother board. Refer to “Removing the CPU

Board and Mother Board”.

3. Remove the M3×8 pan screw with spring washer and washer (PSW), and M3×6 pan screw with washer (PS) which secure the front chassis to the upper

casing.

3. DISASSEMBLY

WARNING

4. Remove the cables from the cable tie.

5. Remove the front chassis from the upper casing.

Paddle socket

Front chassis

Cable tie

Service Manual TEC-5500 3.9

3. DISASSEMBLY

Removing the Side Casing

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

2. Remove the CPU board and mother board. Refer to “Removing the CPU

3. Remove the M3×8 pan screw with spring washer and washer (PSW) which

4. Remove the M3×8 binding head screw (BH) which secures the side casing to

5. Remove the M3×6 pan screw with washer (PS) which secures the terminal of

“Removing the Lower Casing”.

Board and Mother Board”.

secures the cable tie to the spacer bolt.

the upper casing.

the CNA001 ground wire to the AC/DC unit.

6. Remove the M3×40 spacer bolt.

7. Remove the two M3×10 binding head screws which secure the battery

connector cover to the connector of the CNA501 cable.

8. Pull out the side casing. Note that the CNA303 film cable which connects the

LCD unit and CPU board runs through between the two hubs.

CNA501

Side casing

CNA001

Battery connector cover

CNA303

3.10 Service Manual TEC-5500

3. DISASSEMBLY

Removing the Recorder Unit

1. Remove the M3×8 pan screw with spring washer and washer (PSW) which

secures the recorder unit to the side casing.

2. Remove the recorder unit from the side casing.

Recorder unit

Service Manual TEC-5500 3.11

3. DISASSEMBLY

Paddle socket

CNA002

CNA411

CNA022

CNA501

CNP011

CNP401

Biphasic HV unit

CNP131(Red) CNP132

Removing the Biphasic HV Unit

The HV capacitor can store lethal amounts of energy. Discharge this

capacitor before touching any high voltage component (HV capacitor,

biphasic HV unit, paddle socket or paddles).

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

“Removing the Lower Casing”.

2. Remove the CPU board and mother board. Refer to “Removing the CPU

Board and Mother Board”.

3. Remove the front chassis. Refer to “Removing the Front Chassis”.

WARNING

4. Remove the paddle socket.

1) Remove the M3×8 pan screw with spring washer and washer (PSW) which

secures the cable tie to the biphasic HV unit.

2) Remove the M3×6 pan screw with washer (PS) which secures the terminal

of the CNA002 ground wire to the AC/DC unit.

3) Disconnect the CNA411 cable from the biphasic HV unit.

3.12 Service Manual TEC-5500

3. DISASSEMBLY

5. Disconnect the following cables:

• CNA501 cables: Connects to the battery pack, mother board and AC/DC

unit

• CNP011 cable: Connects to the Pacer board (TEC-5531 series only)

• CNA022 cable: Connects to the Pacer board (TEC-5531 series only)

6. Remove the two M3×6 pan screws with washers (PS) which secure the

terminals of CNP131 and CNP132 wires to the HV capacitor.

7. Pull out the biphasic HV unit.

NOTE

After replacing the biphasic HV unit, always check the following:

- Charge energy, charge time, delivered energy and TTR

- Paddle contact impedance threshold

Service Manual TEC-5500 3.13

3. DISASSEMBLY

Removing the HV Capacitor

The HV capacitor can store lethal amounts of energy. Discharge this

capacitor before touching any high voltage component (HV capacitor,

biphasic HV unit, paddle socket or paddles).

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

2. Remove the CPU board and mother board. Refer to “Removing the CPU

3. Remove the side casing. Refer to “Removing the Side Casing”.

WARNING

“Removing the Lower Casing”.

Board and Mother Board”.

4. Remove the four M3×6 pan screws with washers (PS) which secure the

capacitor holders to the upper casing.

5. Remove the two M3×6 pan screws with washers which secure the terminals of

CNP131 and CNP132 wires to the HV capacitor.

6. Pull out the HV capacitor.

Capacitor holder

CNP131 (Red)

CNP132

HV capacitor

3.14 Service Manual TEC-5500

3. DISASSEMBLY

Attaching the HV Capacitor When attaching the HV capacitor, place the HV capacitor label side up and

connect the red cable from the biphasic HV unit to the red labeled connector on

the HV capacitor.

NOTE

After replacing the HV capacitor, always check the following:

- Charge energy, charge time, delivered energy and TTR

Service Manual TEC-5500 3.15

3. DISASSEMBLY

Removing the AC/DC Unit

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

“Removing the Lower Casing”.

2 Remove the two M3×6 screws with washers (PS) and two M3×8 spacer bolts

and remove the four ground wires (CNA001, CNA002, CNA003 and

CNA004).

3. Disconnect the following cables:

• CNA201 cable: Connects to the AC SOURCE socket

• CNA501 cables: Connects to the battery pack, mother board and biphasic

HV unit

4. Pull out the AC/DC unit.

AC/DC unit

CNA201

CNA501

3.16 Service Manual TEC-5500

Removing the Test Load Board

Test load board

Test load cap

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

“Removing the Lower Casing”.

2. Remove the CPU board and mother board. Refer to “Removing the CPU

Board and Mother Board”.

3. Remove the side casing. Refer to “Removing the Side Casing”.

4. Remove the HV capacitor. Refer to “Removing the HV Capacitor”.

5. Remove the test load cap.

6. Remove the two M3×6 screws with washers (PS) which secure the terminals of

the test load board wires to the upper casing.

3. DISASSEMBLY

7. Remove the two M3×6 screws with washers which secure the test load board to

the upper casing.

8. Remove the test load board.

Service Manual TEC-5500 3.17

3. DISASSEMBLY

Removing the Pacer Board (TEC-5531 Series Only)

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

“Removing the Lower Casing”.

2. Remove the CPU board and mother board. Refer to “Removing the CPU

Board and Mother Board”.

3. Remove the front chassis. Refer to “Removing the Front Chassis”.

4. Remove the side casing. Refer to “Removing the Side Casing”.

5. Disconnect the following cables from the Pacer board:

• CNP011 cable: Connects to the biphasic HV unit.

• CNA022 cable: Connects to the biphasic HV unit.

6. Remove the four M3×6 screws with washers (PS) which secure the Pacer board

to the upper casing.

7. Remove the two M3×6 screws with washers which secure the key & LED

board to the upper casing.

8. Remove the Pacer board and Key & LED board.

Pacer board

CNA022

CNP011

Key & LED board

3.18 Service Manual TEC-5500

Removing the LCD Unit

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

2. Remove the CPU board and mother board. Refer to “Removing the CPU

3. Remove the front chassis. Refer to “Removing the Front Chassis”.

4. Remove the side casing. Refer to “Removing the Side Casing”.

5. Remove the two M3×6 screws with washers (PS) which secure the LCD unit to

6. Remove the LCD unit.

3. DISASSEMBLY

“Removing the Lower Casing”.

Board and Mother Board”.

the upper casing.

LCD display

7. Disconnect the CNP301 cable from the LCD INV board and remove the

CNP301 cable from the cable tie.

8. Remove the four M3 tapping screws which secure the LCD display to the LCD

chassis.

9. Remove the LCD display from the LCD chassis.

Cable tie

LCD chassis

Tapping screw

CNP301

Service Manual TEC-5500 3.19

3. DISASSEMBLY

Removing the Key Board

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

“Removing the Lower Casing”.

2. Remove the CPU board and mother board. Refer to “Removing the CPU

Board and Mother Board”.

3. Remove the front chassis. Refer to “Removing the Front Chassis”.

4. Remove the side casing. Refer to “Removing the Side Casing”.

5. Remove the Pacer board if it is installed. Refer to “Removing the Pacer

Board”.

6. Remove the LCD unit. Refer to “Removing the LCD Unit”.

7. Remove the followings which secure the Key board to the upper casing.

TEC-5521 Series: Six M3×6 screws with washers (PS) TEC-5531 Series: Four M3×6 screws with washers and two M3×18 spacer

bolts

8. Disconnect the CNA153 cable from the speaker.

9. Remove the Key board.

Key board

CNA153

Knob (Energy/Mode Select control)

Rotary switch (Energy/Mode Select control)

Example: TEC-5531 Series

Removing the Energy/ Mode Select Control Knob

3.20 Service Manual TEC-5500

To remove the Energy/Mode Select control knob on the front panel.

1. Remove the two allen screws on the Energy/Mode Select control knob.

2. Remove the knob, nut, washer and SS3×3 O-ring from the rotary switch.

Removing the Speaker

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

2. Remove the CPU board and mother board. Refer to “Removing the CPU

3. Remove the front chassis. Refer to “Removing the Front Chassis”.

4. Remove the side casing. Refer to “Removing the Side Casing”.

5. Remove the two M3×6 pan screws with washers (PS) which secure the speaker

6. Disconnect the CNA153 cable from the Key board.

3. DISASSEMBLY

“Removing the Lower Casing”.

Board and Mother Board”.

holder to the upper casing.

CNA153

Speaker

Service Manual TEC-5500 3.21

3. DISASSEMBLY

Removing the Paddle Lock Springs

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

“Removing the Lower Casing”.

2. Remove the CPU board and mother board. Refer to “Removing the CPU

Board and Mother Board”.

3. Remove the side casing. Refer to “Removing the Side Casing”.

4. Remove the biphasic HV unit. Refer to “Removing the Biphasic HV Unit”.

5. Remove the HV capacitor. Refer to “Removing the HV Capacitor”.

6. Remove the AC/DC unit. Refer to “Removing the AC/DC Unit”.

7. Remove the eight M3×8 binding head screws (BH) which secure the paddle

locks to the upper casing.

8. Remove the paddle lock springs.

Paddle lock gasket

Paddle lock spring

3.22 Service Manual TEC-5500

Removing the AC SOURCE Socket

1. Remove the paddles, battery pack, SD card and lower casing. Refer to

“Removing the Lower Casing”.

2. Remove the M3×6 screw with washer (PS) and M3×8 spacer bolt which secure

the terminals of the ground wires to the upper casing.

3. Remove the M3×8 screw with spring washer and washer (PSW) which secures

the cable tie to the upper casing.

4. Disconnect the CNA201 cable from the AC/DC unit.

5. Remove the two M3×8 binding head screw (BH) which secure the AC SOURCE

socket to the upper casing.

3. DISASSEMBLY

CNA201

AC SOURCE socket

Service Manual TEC-5500 3.23

3. DISASSEMBLY

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3.24 Service Manual TEC-5500

Section 4 Maintenance

General ................................................................................................................................ 4.1

Daily Checks...................................................................................................4.1

Monthly Checks ..............................................................................................4.1

System Maintenance Screen .............................................................................................. 4.3

Calling Up the System Maintenance Screen .............................................................4.3

About the Menu Items ............................................................................................... 4.4

System Maintenance Screen Flowchart .......................................................... 4.5

Default Settings .............................................................................................. 4.6

Flash Save Procedure ...............................................................................................4.7

Configuration Screen ................................................................................................. 4.8

Adjust AD Screen .....................................................................................................4.9

Adjust ECG A/D Screen ................................................................................ 4.10

Adjust HV AD Screen ................................................................................... 4.12

Adjust Battery AD Screen ............................................................................. 4.15

Paddle Contact A/D Screen .......................................................................... 4.16

Check Hardware Screen .......................................................................................... 4.17

Check Key Screen ........................................................................................ 4.17

Check LED Screen ....................................................................................... 4.19

Check LCD Screen ....................................................................................... 4.19

Check Recorder Screen ................................................................................ 4.19

Check Time Constant Screen ....................................................................... 4.20

Check Buzzer Screen ................................................................................... 4.21

Check Memory Screen .................................................................................. 4.21

Check Voice Screen ...................................................................................... 4.22

Check ECG Frequency Screen ..................................................................... 4.23

A/D View Screen ..................................................................................................... 4.24

Operation Time Screen ............................................................................................ 4.24

Version Up Screen .................................................................................................. 4.25

Debug Mode Screen ................................................................................................4.25

Check String Screen ..................................................................................... 4.26

Memory Dump Screen ..................................................................................4.26

Periodic Replacement Schedule ........................................................................................ 4.27

Maintenance Check Sheet ................................................................................................ 4.28

Service Manual TEC-5500 4C.1

This page is intentionally left blank.

4C.2 Service Manual TEC-5500

General

4. MAINTENANCE

Check the following items to keep the defibrillator in optimal condition. You can

check each function and adjust the settings of the defibrillator in the System

Maintenance screen. The maintenance check sheet is provided at the end of this

section. Use this sheet to check the defibrillator after any component is replaced.

Daily Checks

Check the following items every day. Refer to “Basic Checks” in Section 2 of the

Operator’s manual).

• Discharge check

• Battery check

• Recorder check

• Alarm check

• Voice check

Monthly Checks

Check the following items once a month. Refer to “Periodic Check” in Section 10

of the Operator’s manual)

• External paddles

• Energy discharge Test

• Checking energy charge at 270 J and disarm (Charge and internal discharge)

• Battery test (Check the battery appearance every 6 months.)

• HV capacitor test

• Recorder test

• Date and time adjustment

Service Manual TEC-5500 4.1

4. MAINTENANCE

NOTE

• Make sure that the date and time printed on the recording paper is

correct. The date and time on the recording paper are important

parts of the medical record.

• When the mother board, CPU board or biphasic HV unit is replaced

with a new one, do the following adjustment. Refer to “System

Maintenance Screen - Adjust AD Screen”.

Mother board:

- ECG sensitivity and offset

- Battery voltage setting

- Paddle contact impedance threshold

CPU board:

- ECG sensitivity and offset

- Charge energy, charge time, delivered energy and TTR

- Battery voltage setting

- Paddle contact impedance threshold

Biphasic HV unit:

- Charge energy, charge time, delivered energy and TTR

- Paddle contact impedance threshold

HV capacitor:

- Charge energy, charge time, delivered energy and TTR

4.2 Service Manual TEC-5500

System Maintenance Screen

• The defibrillator cannot perform ECG monitoring and defibrillation

when the System Maintenance screen is displayed. You have to turn

the power off and then on to perform ECG monitoring and

defibrillation.

• Before changing or adjusting a setting in the System Maintenance

screen, write down or print out all settings. The settings for

defibrillation, ECG waveform acquisition and battery are adjusted in

the factory for each defibrillator. If different settings are used, the

defibrillator may malfunction.

• You must perform the “Flash Save” procedure in the System

Maintenance - Configuration screen after any setting in the

Configuration screen and Adjust AD screen is changed or adjusted.

The new setting or adjustment is not applied and saved until the

“Flash Save” procedure is performed. Otherwise, the “D511” error

code appears next time the power is turned on.

4. MAINTENANCE

CAUTIONS

Calling Up the System Maintenance Screen

When an error is detected when the defibrillator is in the System Maintenance

screen mode, the error code is displayed on the upper right corner of this screen.

1. Connect the AC power cord

2. While pressing and holding the Silence alarms key, turn the Energy/Mode

Select control to the “SETUP” position. The System Setup - Menu screen

appears.

3. Release the Silence alarms key.

4. While pressing the Multi-function key, press the following keys on the front

panel one by one: ECG lead key → Silence alarms key → ECG sensitivity key.

The System Maintenance - Menu screen appears.

5. Release the Multi-function key.

Service Manual TEC-5500 4.3

4. MAINTENANCE

The function keys at the bottom of the screen change according to the selected screen.

• To call up the sub-screen for each item.

1) Press the Item key to select the item. The cursor moves to the next item.

2) When the item is selected, press the OK key. The menu screen of the

selected item appears.

About the Menu Items

• To exit the System Maintenance Screen, turn the power off by turning the

Energy/Mode Select control to the “OFF” position.

• To print the information displayed on the System Maintenance screen, press the

record key on the front panel.

There are eight items in the System Maintenance - Menu screen.

Screen Settings

1 Configuration Changes the settings in the following items:

Language, Highcut Filter, Alarm Off Message,

Battery Insert Message, DSI Option, Pacing

Option, Freeze Function, Use Other Power,

Charge Time Clear, Default Setting, Flash Save

2 Adjust AD Changes the A/D values for ECG waveform

acquisition, biphasic HV unit, battery voltage and

paddle contact impedance threshold.

3 Check Hardware Checks the operation of the key switches, LEDs,

recorder, memories, sounds, etc

4 AD View Checks the A/D values that the main CPU

currently receives.

5 Operation Time Displays the count of external discharges and

operation time.

6 Version Up You can update the system program and data

7 Debug mode Displays the characters used in this defibrillator

and checks the flash memory.

8 Alarm Setting Select “Off” to turn off the ECG, SpO2 and CO

alarms.

4.4 Service Manual TEC-5500

Nihon Kohden TEC-5521C, TEC-5521E, TEC-5531E, TEC-5521K, TEC-5531C Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

GENERAL HANDLING PRECAUTIONS

Section 1 General

Introduction

General Information on Servicing

Service Policy, Service Parts and Patient Safety Checks

Important Safety Information

Specifications

Panel Description

Composition

Board/Unit Location

Block Diagram

Section 2 Troubleshooting

How to Troubleshoot

Error Code

Message

Troubleshooting

Section 3 Disassembly

Before You Begin

Connection Diagram

Removing the Lower Casing

Removing the CPU Board and Mother board

Removing the Front Chassis

Removing the Side Casing

Removing the Biphasic HV Unit

Removing the HV Capacitor

Removing the AC/DC Unit

Removing the Test Load Board

Removing the Pacer Board (TEC-5531 Series Only)

Removing the LCD Unit

Removing the Key Board

Removing the Speaker

Removing the Paddle Lock Springs

Removing the AC SOURCE Socket

Section 4 Maintenance

General

System Maintenance Screen