Ecg 9620 кардиограф инструкция по применению

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  1/96

  SERVICE MANUAL

  cardiofax

  ELECTROCARDIOGRAPH

  ECG-9620

  ECG-9620L

  ECG-9620M

  ECG-9620N

  ECG-9620P

  ECG-9620S

  ECG-9620T

  ECG-9620U

  08CK2.782.00516E

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  2/96

  CONTENTS

  Service Manual ECG-9620 C.1

  Contents

  GENERAL HANDLING PRECAUTIONS
  ………………………………………………………………………
  i

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

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

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

  Dangers, Warnings, Cautions and Notes
  ……………………………………………………………
  iv

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

  Section 1 General
  ………………………………………………………………………..1C.1Introduction
  ………………………………………………………………………………………………………….
  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

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

  Specifications
  ……………………………………………………………………………………………………..
  1.11

  Panel Descriptions
  ………………………………………………………………………………………………
  1.14

  Front Panel
  ……………………………………………………………………………………………….
  1.14

  Left Side
  Panel…………………………………………………………………………………………..
  1.14

  Operation Panel
  …………………………………………………………………………………………
  1.15

  Right Side Panel
  ………………………………………………………………………………………..
  1.15

  Rear Panel
  ………………………………………………………………………………………………..
  1.16

  Composition
  ……………………………………………………………………………………………………….
  1.17

  Standard Components
  ………………………………………………………………………………..
  1.17

  Options
  …………………………………………………………………………………………………….
  1.17

  Location
  …………………………………………………………………………………………………………….
  1.18

  Section 2 Maintenance
  …………………………………………………………………2C.1

  Replacement
  ………………………………………………………………………………………………………..
  2.1Periodic Replacement Schedule
  …………………………………………………………………….
  2.1

  Cleaning and Lubrication
  ……………………………………………………………………………………….
  2.2

  Cleaning and Greasing Schedules
  …………………………………………………………………
  2.2

  Cleaning the Paper Mark Sensor and Paper Empty Sensor
  ………………………………. 2.2

  Cleaning the Motor Rotation Sensor and Lubricating the Motor
  Gear and Gear

  Meshed with Motor Gear
  ………………………………………………………………………………
  2.3

  Maintenance Check Sheet
  ……………………………………………………………………………………..
  2.5

  Section 3 Troubleshooting and System Error Message
  ………………….3C.1Troubleshooting Flowchart
  ……………………………………………………………………………………..
  3.1

  Troubleshooting Table
  ……………………………………………………………………………………………
  3.4

  Troubleshooting General Operation Problem
  ……………………………………………………
  3.4

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  3/96

  CONTENTS

  C.2 Service Manual ECG-9620

  Troubleshooting Recording Problem
  ……………………………………………………………….
  3.6

  System Error Message
  ………………………………………………………………………………………….
  3.7

  Section 4 System Test, Adjustment and Setting
  …………………………….4C.1System Test
  …………………………………………………………………………………………………………
  4.1

  Overall
  ……………………………………………………………………………………………………….
  4.1

  Calling up the System Test Level 1
  …………………………………………………………………
  4.2

  Calling up the System Test Level 2
  …………………………………………………………………
  4.3

  Entering the System Test Number
  ………………………………………………………………….
  4.4

  Executing the System Test
  …………………………………………………………………………….
  4.5

  Quitting the System Test
  ……………………………………………………………………………….
  4.6

  Exiting the System Test
  Mode………………………………………………………………………..
  4.6

  Demonstration
  ……………………………………………………………………………………………………..
  4.7

  Recorder
  ……………………………………………………………………………………………………………..
  4.8

  Thermal Head
  …………………………………………………………………………………………………….
  4.10

  Key……………………………………………………………………………………………………………………
  4.11

  Memory
  ……………………………………………………………………………………………………………..
  4.12

  Single Memory Test Mode
  …………………………………………………………………………..
  4.13

  Continuous Memory Test Mode
  ……………………………………………………………………
  4.13

  LCD/LED……………………………………………………………………………………………………………
  4.14

  Input Unit
  …………………………………………………………………………………………………………..
  4.16

  Calibration
  ………………………………………………………………………………………………………….
  4.17

  Communication
  …………………………………………………………………………………………………..
  4.18

  CRO/EXT1
  …………………………………………………………………………………………………………
  4.20

  System Setup Initialization
  ……………………………………………………………………………………
  4.22

  ECG Findings List
  Recording………………………………………………………………………………..
  4.23

  Recording Resolution Setting
  ……………………………………………………………………………….
  4.24

  Date and Time Setting
  …………………………………………………………………………………………
  4.25

  Setting the Date and Time
  …………………………………………………………………………..
  4.25

  Section 5 Board/Unit Description
  ………………………………………………….5C.1Block
  Diagram………………………………………………………………………………………………………
  5.1

  Power Unit
  …………………………………………………………………………………………………………..
  5.2

  ECG Control Board
  ……………………………………………………………………………………………….
  5.2

  Section 6 Disassembly
  …………………………………………………………………6C.1Before
  You Begin
  …………………………………………………………………………………………………..
  6.1

  Warnings and Cautions
  ………………………………………………………………………………..
  6.1

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

  Cable Connection
  …………………………………………………………………………………………………
  6.2

  Removing the Upper Casing
  …………………………………………………………………………………..
  6.4

  Removing the Magazine and Recording Paper
  ……………………………………………….. 6.4

  Removing the Battery Pack
  …………………………………………………………………………..
  6.4Removing the Upper Casing
  ………………………………………………………………………….
  6.4

  Removing the Thermal Head and Motor Assy
  …………………………………………………………..
  6.5

  Removing the Thermal Head
  …………………………………………………………………………
  6.5

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  4/96

  CONTENTS

  Service Manual ECG-9620 C.3

  Removing the Motor
  Assy……………………………………………………………………………..
  6.6

  Removing the ECG Control Board
  …………………………………………………………………………..
  6.6

  Removing the Power Board
  ……………………………………………………………………………………
  6.8

  Removing the Power Board
  …………………………………………………………………………..
  6.8

  Replacing the Power Fuse and Battery Fuse
  ………………………………………………….. 6.9

  Removing the Key Board and LCD Unit
  ………………………………………………………………….
  6.10

  Section 7 Replaceable Parts
  List…………………………………………………..7C.1Instrument
  ……………………………………………………………………………………………………………
  7.2

  Section 8 Connector Pin Assignment
  …………………………………………….. 8.1Attaching
  the Ferrite Core
  ……………………………………………………………………………..
  8.1

  EXT-IN Connector
  ………………………………………………………………………………………..
  8.2

  CRO-OUT Connector
  …………………………………………………………………………………..
  8.2

  SIO Connector
  …………………………………………………………………………………………….
  8.2

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  5/96Service Manual ECG-9620 i

  GENERAL HANDLING PRECAUTIONS

  This device is intended for use only by qualified medical
  personnel.

  Use only Nihon Kohden approved products with this device. Use of
  non-approved products or in

  a non-approved manner may affect the performance specifications
  of the device. This includes,

  but is not limited to, batteries, recording paper, pens,
  extension cables, electrode leads, input

  boxes and AC power.

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

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

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

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

  poorly ventilated areas, and saline or sulphuric air.

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

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

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

  specifications, and have sufficient current capacity.

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

  3. Before Operation

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

  (2) Check that the instrument is grounded properly.

  (3) Check that all cords are connected properly.

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

  problems.

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

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

  4. During Operation

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

  (2) Turn power off or remove electrodes and/or transducers when
  necessary to assure the patients 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.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  6/96ii Service Manual ECG-9620

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

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

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

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

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

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

  WARRANTY POLICY

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

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

  the warranty.

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

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

  No other party is authorized to make any warranty or assume
  liability for NKCs 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.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  7/96Service Manual ECG-9620 iii

  EMC RELATED CAUTION

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

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

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

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

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

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

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

  The following describes some common interference sources and
  remedial actions:

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

  or cellular phone:

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

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

  equipment and/or system.

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

  and/or system:

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

  possible, use a different power supply.

  3. Effect of direct or indirect electrostatic discharge:

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

  indirect electrostatic energy before using it.

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

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

  system as far as possible from the radio wave receiver.

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

  subsidiary or distributor for additional suggestions.

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

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

  The CE mark is applied only to the ECG-9620L/M/N
  Electrocardiograph.

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

  B.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  8/96iv Service Manual ECG-9620

  Conventions Used in this Manual and Instrument

  Dangers, Warnings, Cautions and Notes

  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 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.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  9/96Service Manual ECG-9620 v

  Symbol Description Symbol Description

  Attention, consult operators

  manualType CF applied part

  Equipotential terminal Serial number

  Serial input/output terminal Date of manufacture

  Input terminal for analog signal

  Output terminal for analog

  signal

  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.

  Eject (magazine release button) Protective earth

  Alternative current

  Explanations of the Symbols in this Manual and Instrument

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

  Cardiograph

  Patient cable

  Symbol Description Symbol Description

  Attention, consult operators

  manual

  Defibrillation-proof

  Type CF applied par

  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.

  The CE mark is applied only to the

  ECG-9620L/M/N Electrocardiograph.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  10/96vi Service Manual ECG-9620

  Operation panel

  On screen

  Symbol Description Symbol Description

  Alternating current

  5

  Rhythm

  On only for a part of

  equipment6

  Age

  Off only for a part of

  equipment7

  Sex

  Battery charging/

  8

  Paper feed / Mark

  Battery check

  9

  Filter

  /

  0

  Copy / Calibration / Automatic / Manual control

  F11

  F1 function key CLR Clear

  F22

  F2 function key Start/Stop recording

  F33

  F3 function key ENT Enter

  4

  Mode

  A key with a numeric number is used to enter

  numbers in the System Setup screen and paient

  information.

  Symbol Description

  QRS sync mark

  CAL mark

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  11/96

  Service Manual ECG-9620 1C.1

  Section 1 General

  Introduction
  …………………………………………………………………………………………………………
  1.1

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

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

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

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

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

  Maintenance Equipments and Tools
  ………………………………………………………………
  1.5

  General Safety Information
  ……………………………………………………………………………………
  1.6

  Specifications…………………………………………………………………………………………………….
  1.11

  Panel Descriptions
  ……………………………………………………………………………………………..
  1.14

  Front Panel
  ………………………………………………………………………………………………
  1.14

  Left Side
  Panel………………………………………………………………………………………….
  1.14

  Operation Panel
  ………………………………………………………………………………………..
  1.15

  Right Side Panel
  ……………………………………………………………………………………….
  1.15

  Rear Panel
  ……………………………………………………………………………………………….
  1.16

  Composition
  ………………………………………………………………………………………………………
  1.17

  Standard Components
  ……………………………………………………………………………….
  1.17

  Options
  ……………………………………………………………………………………………………
  1.17

  Location
  ……………………………………………………………………………………………………………
  1.18

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  12/96

  1. GENERAL

  Service Manual ECG-9620 1.1

  Introduction

  This service manual provides useful information to qualified
  service personnel to

  understand, troubleshoot, service, maintain and repair the
  ECG-9620L/M/N/P/S/T/

  U Electrocardiograph (referred to as the instrument in this
  service manual).

  The System test, Adjustment and Setting section in this service
  manual describes

  the maintenance that should be performed by qualified service
  personnel. The

  Maintenance section in the operators manual describes the
  maintenance that can

  be performed by the user.

  The information in the operators manual is primarily for the
  user. However, it is

  important for service personnel to thoroughly read the operators
  manual and

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

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

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

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  13/96

  1. GENERAL

  1.2 Service Manual ECG-9620

  General Information on Servicing

  Note the following information when servicing the
  instrument.

  CAUTIONS

  Safety

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

  such as the operation keys, could be contaminated by
  contagious

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

  When servicing the instrument, wear rubber gloves to protect

  yourself from infection.

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

  solvent inside the lithium battery could flow out or a toxic
  substance

  inside it could come out. If the solvent or toxic substance
  touches

  your skin or gets into your eye or mouth, immediately wash it
  with a

  lot of water and see a physician.

  Liquid ingress

  The instrument is not waterproof, so do not install the
  instrument

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

  accidentally gets into the instrument or the instrument
  accidentally

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

  water and dry it completely. After reassembling, verify that
  there is

  nothing wrong with the patient safety checks and function/

  performance checks. If there is something wrong with the

  instrument, contact your Nihon Kohden representative 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 instrument, wipe it with
  a non-

  abrasive cloth moistened with alcohol. Do not use any other

  disinfectants or ultraviolet rays to disinfect the
  instrument.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  14/96

  1. GENERAL

  Service Manual ECG-9620 1.3

  Caution — continued

  Transport

  Use the specified shipment container and packing material to

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

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

  that the buffer material does not get inside the instrument.

  When transporting a board or unit of the instrument, be sure to
  put it

  in a conductive bag. Never use an aluminum bag to transport
  a

  board or unit. Also, never use a styrene foam or plastic bag
  which

  generates static electricity to wrap the board or unit of
  the

  instrument.

  Handling the instrument

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

  outside surface of the instrument is easily damaged. So when

  handling the instrument, remove clutter from around the
  instrument

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

  Because most of the boards in the instrument are multilayer
  boards

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

  required to remove and solder the electrical devices on it. 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.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  15/96

  1. GENERAL

  1.4 Service Manual ECG-9620

  Service Policy, Service Parts and Patient Safety Checks

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

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

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

  component level repair outside the factory for the following
  reasons:

  Most of the boards are multilayer boards with surface mount
  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 mount electrical devices.

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

  where the instrument is protected against static
  electricity.

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

  service that we provide.

  NOTE

  When ordering parts or accessories from your Nihon Kohden

  representative, please quote the NK code number and part
  name

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

  unit in which the required part is located. This will help us
  to

  promptly attend to your needs. Always use parts and
  accessories

  recommended or supplied by Nihon Kohden Corporation to
  assure

  maximum performance from your instrument.

  Service Parts

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  16/96

  1. GENERAL

  Service Manual ECG-9620 1.5

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

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

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

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

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

  repair is made on the instrument.

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

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

  safety:

  Protective earth resistance check

  Earth leakage current check

  Enclosure leakage current check

  Patient leakage current check

  Withstanding voltage check

  Test equipment

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

  required.

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

  10 attenuating probe and 100 MHz or more frequency response
  characteristic

  must be provided.

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

  digital voltmeter.)

  Maintenance Equipments

  and Tools

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  17/96

  1. GENERAL

  1.6 Service Manual ECG-9620

  General Safety Information

  DANGER

  Never use this cardiograph in the presence of any flammable

  anesthetic gas or high-concentration oxygen atmosphere. Failure
  to

  follow this warning may cause explosion or fire.

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

  Failure to follow this warning may cause explosion or fire.

  WARNING

  Using with an electrical surgical unit (ESU)

  Never use this cardiograph near an ESU. The cardiograph may

  malfunction due to high-frequency noise from the ESU.

  When using this cardiograph with an ESU, refer to the
  instruction

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

  plate is correctly attached to the patient and check that
  the

  cardiograph operates correctly when using with the ESU. If
  the

  return plate is not attached correctly, it may burn the patients
  skin

  where the electrodes are attached.

  MRI examination

  Do not install this cardiograph in an MRI examination room.
  The

  cardiograph may not operate properly due to high-frequency

  magnetic noise from the MRI.

  When performing MRI tests, remove from the patient all
  electrodes

  which are connected to this cardiograph. Failure to follow
  this

  warning may cause serious electrical burn on the patient due to
  local

  heating caused by dielectric electromotive force. For details,
  refer to

  the instruction manual for the MRI.

  When performing defibrillation

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

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

  discharged energy may burn the patients skin.

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

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

  Failure to follow this warning may cause serious electrical
  burn,

  shock or other injury.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  18/96

  1. GENERAL

  Service Manual ECG-9620 1.7

  Installation

  Warning — continued

  Use only the following specified patient cables when using with
  a

  defibrillator or ESU. When the specified patient cable is
  connected,

  the cardiograph is type CF defibrillation-proof compliance.
  Failure to

  follow this warning will cause serious electrical burn where
  the

  electrode is attached and damage the cardiograph due to
  discharge

  energy when defibrillation is performed.

  Patient cable: BJ-901D IEC standard, 3 mm diameter tip

  BJ-902D IEC/DIN standard, 4 mm diameter tip

  BJ-903D IEC/DIN standard, clip

  BA-901D AHA requirement, 3 mm diameter tip

  BA-903D AHA requirement, color clip

  When using an ESU and defibrillator with the cardiograph, use
  silver

  chloride disposable electrodes.

  WARNING Only use the 3-prong power cord provided with the
  cardiograph.

  Failure to follow this caution may cause electrical shock to
  the

  patient and operator.

  Only use the specified patient cable and connect the
  external

  instruments with the specified installation procedure. Failure
  to

  follow this warning may cause a serious electrical shock to
  the

  patient and operator by leakage current.

  CAUTION

  When the provided 3-prong power cord cannot be used, operate
  the

  cardiograph on battery power. When another type of power
  cord

  (especially 2-prong power cord) is used, this may cause
  electrical

  shock to the patient and operator.

  When several medical instruments are used together, ground
  all

  instruments at the same one-point ground to protect the patient
  and

  operator from electrical shock. Any potential difference
  between

  instruments may cause electrical shock to the patient and
  operator.

  When connecting an external instrument to connectors marked
  with

  , the external instrument and this cardiograph must be
  connected

  according to the IEC60601-1-1 Medical electrical equipment —
  Part 1-

  1: General requirements for safety — Collateral standard:
  Safety

  requirements for medical electrical systems. Failure to follow
  this

  warning may cause electrical shock to the patient and
  operator.

  When inserting or removing the battery from the cardiograph,
  makesure that the cardiograph is turned off. Otherwise, the patient
  and

  operator may get an electrical shock.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  19/96

  1. GENERAL

  1.8 Service Manual ECG-9620

  Battery PackDANGER

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

  Otherwise, the substance liquid leaks 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 liquid 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

  substance liquid comes out and the battery pack explodes.

  Do not use a battery pack 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 pack
  to

  explode.

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

  susbstance liquid inside the battery leaks and explodes.

  If the battery pack is damaged and substance liquid inside
  the

  battery 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.

  Only charge the battery pack with the ECG-9620 cardiograph. If
  any

  other battery charger is used, abnormal current flows and
  the

  substance liquid 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 liquid inside the battery leaks out and the
  battery

  pack explodes.

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

  installed with the correct polarity direction. Otherwise,
  the

  substance inside the battery leaks out and the battery pack
  explodes.

  Use only the SB-901D battery pack.

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

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

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

  leakage. A damaged battery pack explodes if used.

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

  battery may leak.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  20/96

  1. GENERAL

  Service Manual ECG-9620 1.9

  CAUTION

  Do not charge the deteriorated battery pack. Otherwise, the

  cardiograph cannot operate on battery power.

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

  temperature place. The life time of the battery pack may be

  shortened, the performance of the battery pack may be degraded
  and

  the substance liquid inside the battery may leak.

  Do not leave the battery pack where patients can reach it.

  Before disposing of the battery pack, 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.

  CAUTION

  Enter the patient information correctly. Otherwise, the ECG data
  may

  be lost or mixed up with another patients ECG data.

  ECG recording judgement

  The cardiograph provides automatic ECG analysis function.
  The

  automatic ECG analysis is performed for acquired ECG
  waveforms

  only and does not reflect all conditions of the patient. The
  results of

  the analysis may not correspond to the judgment of a
  physician.

  Overall judgement must be performed by the physician, referring
  to

  the analysis result, clinical findings, and other examination
  results.

  After the physicians overall judgement, the analysis results
  should

  be signed or initialed by the physician.

  Take care when judging the ECG recording because the 25 Hz
  EMG

  filter may cause greater distortion of P-waves and QRS-waves

  depending on the waveform shape. The characteristics of the
  EMG

  filter are similar to a conventional analog filter.

  Do not use the output signal from the output connector for a

  synchronization signal such as the synchronized
  cardioversion

  signal. There is a time delay between the input ECG signal
  and

  output signal.

  When the cardiograph operates on battery power and large
  leakage

  current is input from the connected external instrument, ground
  the

  cardiograph or use an isolation transformer for the external

  instrument. Failure to follow this caution may cause electrical
  shock

  to patient and operator.

  Use only the KD-103E cart for the cardiograph. When another cart
  is

  used, the cardiograph may fall off or the cart may tip over.

  Operation

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  21/96

  1. GENERAL

  1.10 Service Manual ECG-9620

  Maintenance

  Caution — continued

  Never use the cardiograph with its side panel downward. Failure
  to

  follow this caution may cause the cardiograph to fall over or
  cause

  battery liquid leakage.

  NOTE

  When using the battery pack and the battery operation lamp
  is

  blinking in orange, measurement results may not be saved.

  CAUTION

  Before maintenance (cleaning, disinfection), make sure that
  the

  cardiograph is turned off and the power cord is removed from the
  AC

  outlet and cardiograph. Otherwise, the operator may get an
  electrical

  shock and the cardiograph may malfunction.

  Before battery replacement, make sure that the cardiograph is
  turned

  off and the power cord is removed from the AC outlet and

  cardiograph. Otherwise, the operator may get an electrical
  shock.

  Do not disassemble or repair the cardiograph. Disassembly
  and

  repair must be performed by qualified service personnel.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  22/96

  1. GENERAL

  Service Manual ECG-9620 1.11

  Specifications

  ECG input

  Input impedance 10 Mor more

  Electrode offset tolerance 500 mV or more

  Input unit protection Isolated and defibrillator protected only
  when the following specified patient

  cable is connected

  Patient cable: BJ-901D, BJ-902D, BJ-903D, BA-901D, BA-903D

  Standard sensitivity 10 mm /mV 2%

  Common mode rejection ratio 100 dB or more

  Frequency response 0.05 to 150 Hz 3 dB or more

  Waveform data processor

  Sample rate 500 samples/s (input unit: 8,000 samples/s)

  AC line filter 50/60 Hz

  High-cut filter 75, 100, 150 Hz

  EMG filter 25/35 Hz

  Time constant 3.2 s or more

  Waveform status detection Electrode detachment (polarization
  voltage),

  Noise (high frequency)

  Sensitivity selection 5, 10 , 20 mm/mV

  LCD

  Size 3.8 inch

  Number of dots 320240

  ECG waveform 6 channel: 2.8 s

  Displayed data Waveform, patient information, recording
  settings, operation mode, heart rate,

  QRS sync mark, error message, electrode detachment, noise

  Recorder

  Printing method High resolution thermal printer head

  Printing density 200 dpi (8 dots/mm)

  Scanning line density 1 ms

  Recording width 56 mm

  Number of recording channels 1, 2, 3

  Paper speed 25, 50 mm/s

  Number of recording lines Up to 14

  Printed data Program type, version, date and time, paper speed,
  sensitivity, lead name, filter,

  Patient information (ID number, sex, age zone), timing mark,
  event mark,

  electrode detachment, noise

  Mechanical noise 48 dB or less at paper speed 25 mm/s

  External input/output

  External input 10 mm/0.5 V 5%, input impedance 100 k or more

  Signal output 0.5 V/1 mV 5%, output impedance 100or less

  Serial I/O Communication method: RS-232C

  Baud rate: 2400, 4800, 9600, 19200, 38400,

  57600, 115200

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  23/96

  1. GENERAL

  1.12 Service Manual ECG-9620

  Power requirement

  Line voltage ECG-9620L: 220 V AC 10%

  ECG-9620M: 230 V AC 10%

  ECG-9620N: 240 V AC 10%

  ECG-9620P: 220 V AC 10%

  ECG-9620S: 110 V AC 10%

  ECG-9620T: 120 V AC 10%

  ECG-9620U: 127 V AC 10%

  Line frequency 50 or 60 Hz

  Power input 45 VA

  Power consumption 45 W or less

  Built-in battery (SB-901D) Voltage: 12 V

  Current consumption: 6 A or less

  Battery operation time: 2 hours or more (when using a new fully
  charged

  battery in manual mode, at 25 mm/s of recording

  speed, 3 ch, and in continuous recording.)

  Remaining battery power can change depending on

  the surrounding temperature and quality of

  recording waveform.

  Environment

  Operating temperature 5 to 40C (41 to 104F)

  Operating humidity

  25 to 85% RH (with battery pack and recording paper)

  20 to 85% RH (with battery pack and without recording paper)

  25 to 90% RH (with recording paper and without battery pack)

  25 to 95% RH (without battery pack and recording paper)

  Operating atmospheric pressure 70 to 106 kPa

  Storage temperature

  Cardiograph: -20 to 65C (4 to 149F)

  Battery pack: -20 to 50C (4 to 122F) (within 30 days)

  -20 to 40C (4 to 104F) (within 90 days)

  -20 to 30C (4 to 86F) (within one year)

  Recording paper: -20 to 50C (4 to 122F)

  Storage humidity

  Cardiograph: 10 to 95% RH (non-condensing)

  Battery pack: 10 to 85% RH (non-condensing) (within 60 days)

  45 to 85% RH (non-condensing) (more than 60 days)

  Recording paper: 10 to 90% RH (non-condensing)

  Storage atmospheric pressure 70 to 106 kPa

  Electromagnetic compatibility

  IEC60601-1-2 (1993), CISPR11 (1990) Group 1 Class B

  IEC60601-2-25 Amendment 1 (1999), protection against
  electrosurgery interference

  Other

  Indoor portable

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  24/96

  1. GENERAL

  Service Manual ECG-9620 1.13

  Dimensions and weight

  Dimensions 280 W 70 H 216 D mm (excluding protrusions)

  Weight Approx. 3.1 kg (with battery)

  Approx. 2.7 kg (without battery)

  Safety

  Safety standard:

  IEC60601-1 (1998)

  IEC60601-1 Amendment 1 (1991)

  IEC60601-1 Amendment 2 (1995)

  IEC60601-2-25 (1993)

  IEC60601-2-25 Amendment 1 (1999)

  Type of protection against electric shock:

  AC power: Class I

  Battery power: Internally powered equipment

  Degree of protection against electric shock:

  Defibrillator proof type CF applied part when patient cable
  BJ-901D, BJ-902D, BJ-903D, BA-901D or

  BA-903D is used

  Degree of protection against harmful ingress of water:

  Ordinary equipment

  Degree of safety of application in the presence of a flammable
  anaesthetic mixture with air, oxygen or nitrous

  oxide:

  Not suitable for use in the presence of a flammable anaesthetic
  mixture with air, oxygen or

  nitrous oxide

  Mode of operation:

  Continuous

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  25/96

  1. GENERAL

  1.14 Service Manual ECG-9620

  Name

  1. Operation panel

  2. Magazine (paper container)

  3. LCD screen

  Panel Descriptions

  Front Panel

  2

  3

  Name

  1. Magazine release button

  2. Patient cable connector

  Left Side Panel

  1

  1 2

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  26/96

  1. GENERAL

  Service Manual ECG-9620 1.15

  Right Side Panel

  CAUTION

  When connecting an external instrument to connectors marked with
  , the external instrument and this

  cardiograph must be connected according to the IEC60601-1-1
  Medical electrical equipment — Part 1-1:

  General requirements for safety — Collateral standard: Safety
  requirements for medical electrical

  systems. Failure to follow this warning may cause electrical
  shock to the patient and operator.

  Do not use the output signal from the output connector for a
  synchronization signal such as the

  synchronized cardioversion signal. There is a time delay between
  the input ECG signal and output

  signal.

  Name

  1. EXT-IN connector

  2. CRO-OUT

  3. SIO connector

  4. AC power cord socket

  5. Equipotential ground terminal

  4

  1 3

  5

  2

  Operation Panel

  Name

  1. AC power lamp

  2. Battery operation lamp

  3. Battery charge lamp

  4. Power key/lamp

  5. Mode key

  6 Rhythm key/lamp

  7. F1, F2, F3 function keys

  11

  9

  10

  8

  6

  7

  12 1413

  4

  1

  2

  3

  5

  Name

  8. Age key

  9. Sex key

  10. Auto/Manual key/lamp

  11. Feed/Mark key

  12. Filter key/lamp

  13. Copy/CAL key lamp

  14. Start/Stop key/lamp

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  27/96

  1. GENERAL

  1.16 Service Manual ECG-9620

  Rear Panel

  CAUTION

  Always install the battery even when the cardiograph operates on
  AC

  power. Otherwise sudden power down occurs when any electrode
  is

  detached during recording.

  Battery

  The CE mark is applied only to the

  ECG-9620L/M/N Electrocardiograph.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  28/96

  1. GENERAL

  Service Manual ECG-9620 1.17

  Composition

  To order a replacement assembly above, use the Code No.

  To order a replacement component inside an assembly, refer to
  Section 7

  Replaceablet Parts List.

  RHC-0004 Record Assy

  RHC-00041 Motor Assy

  UTC-0009 Paper senser board

  UTC-0010 Motor sensor board

  RHC-00042 Magazine Assy

  RKC-0001 Transfer Assy (220 V) for L and P version

  RKC-0002 Transfer Assy (230 V) for M version

  RKC-0003 Transfer Assy (240 V) for N version

  RKC-0004 Transfer Assy (110 V) for S version

  RKC-0005 Transfer Assy (120 V) for T version

  RKC-0006 Transfer Assy (127 V) for U version

  UTC-0006 Key board

  UTC-0007 ECG control board

  UTC-0008 Power board

  ECG-9620L

  ECG-9620M

  ECG-9620N

  ECG-9620P

  ECG-9620S

  ECG-9620T

  ECG-9620U

  KD-103E Cart

  KH-801E Patient Cable Hanger

  Standard Components

  Options

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  29/96

  1. GENERAL

  1.18 Service Manual ECG-9620

  Location

  Transfer Assy

  Thermal Head Assy

  Motor Assy

  Key board

  ECG control board

  LCD

  Buzzer

  Power board

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  30/96

  Service Manual ECG-9620 2C.1

  Section 2 Maintenance

  Replacement
  ……………………………………………………………………………………………………….
  2.1

  Periodic Replacement Schedule
  ……………………………………………………………………
  2.1

  Cleaning and Lubrication
  ………………………………………………………………………………………
  2.2

  Cleaning and Greasing Schedules
  ………………………………………………………………..
  2.2

  Cleaning the Paper Mark Sensor and Paper Empty Sensor
  ……………………………… 2.2

  Cleaning the Motor Rotation Sensor and Lubricating the Motor
  Gear and Gear

  Meshed with Motor Gear
  ……………………………………………………………………………..
  2.3

  Maintenance Check Sheet
  …………………………………………………………………………………….
  2.5

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  31/96

  2. MAINTENANCE

  Service Manual ECG-9620 2.1

  This section describes the periodic replacement and cleaning of
  parts which are

  required to maintain the instrument in good working
  condition.

  This subsection only describes replacement schedule for parts
  that need to be

  periodically replaced. The actual replacement procedures are
  described in the section

  for Disassembly and Assembly. Read the whole Disassembly and
  Assembly section,

  especially its Warnings and Cautions, before replacing any of
  the parts described here.

  To maintain the performance of the instrument, the parts listed
  in the table below must

  be periodically replaced by qualified service personnel.

  Code No. Description Recommendation

  SB-901D Battery pack * See below.

  08SK3.878.00046 Thermal head, KYT-56-8MPP1-SKH After 50 km
  recording

  RHC-00041 Motor Assy After 1000 hours operation

  * Replace the battery pack when it cannot last for 30 minutes
  during battery operation

  at the temperatures between 20 and30C.

  Replacement

  Periodic ReplacementSchedule

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  32/96

  2. MAINTENANCE

  2.2 Service Manual ECG-9620

  Cleaning and Lubrication

  Cleaning and Lubricating

  Schedules

  Cleaning the Paper Mark

  Sensor and Paper Empty

  Sensor

  Paper sensor

  This subsection describes the cleaning and lubrication
  procedures for parts that

  must be cleaned and lubricated by qualified service personnel.
  The cleaning

  procedures for parts that can be cleaned by the user are
  described in the Operators

  Manual.

  To maintain the performance of the instrument, the parts listed
  in the table below

  must be regularly cleaned or lubricated.

  Part Frequency Performed by

  Instrument (external) After each use User

  Thermal Head Once a month User

  Platen Roller assy Once a year User

  Paper Sensor Once a month Qualified service personnel

  Motor Sensor Once a year Qualified service personnel

  Motor Gear and Gear Once a year Qualified service personnel

  Meshed with Motor Gear

  1. Remove the magazine. The illustration below shows the
  location of the paper

  sensor.

  2. Use a piece of cotton moistened with alcohol to clean both
  sensors.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  33/96

  2. MAINTENANCE

  Service Manual ECG-9620 2.3

  Cleaning the Motor

  Rotation Sensor and

  Lubricating the Motor Gear

  and Gear Meshed with

  Motor Gear

  1. Remove the upper casing from the lower casing. Refer to
  Removing the

  Upper Casing in Section 6.

  2. Remove the two M3 pan screws with washers and spring washers
  which fasten

  the ground leads to the power transformer unit.

  3. Disconnect the CNA011 and CNA012 cables from the ECG control
  board.

  4. Remove the three M3 binding head screws which fasten the
  thermal head unit

  to the lower casing and remove the thermal head unit.

  5. Remove the two M3 binding head screws which fasten the motor
  assy to the

  thermal head unit and remove the motor assy.

  6. Remove the two M3 pan screws with spring washers which fasten
  the motorsensor board to the motor assy and remove the motor sensor
  board.

  7. Use a piece of cotton moistened with alcohol to clean the
  motor rotation

  sensor.

  8. Use a brush to clean the holes in the gear.

  Ground lead

  CNA011 cable

  CNA012 cable

  M3 binding head screwM3 pan screw with washerand spring
  washer

  Motor assy

  Motor sensor board

  Thermal head unit

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  34/96

  2. MAINTENANCE

  2.4 Service Manual ECG-9620

  Top view

  9. Use grease to lubricate the motor gear and the gear which
  directly meshes with

  the motor gear as shown below.

  Motor

  Motor gear

  Gear meshed with motor gear

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  35/96

  2. MAINTENANCE

  Service Manual ECG-9620 2.5

  Maintenance Check Sheet 1/2

  Date:

  Customer:

  Customer Address:

  Service Personnel: Service Company:

  Instrument Name: Instrument Model:

  Instrument Serial Number: Hardware Revision:

  Software Revision:

  Overview Outside of instrument is clean. Yes No

  No loose screws. Yes No

  No physical damage, no bent parts and no contact with liquid.
  Yes No

  Operation panel is not torn or broken. Yes No

  All keys, buttons and controls are undamaged. Yes No

  Power cord, patient cable are not frayed

  and are correctly connected to the instrument. Yes No

  Paper magazine opens and closes correctly. Yes No

  Thermal head is clean. Yes No

  The paper feeding roller is clean. Yes No

  Motor rotation sensor is clean. Yes No

  Paper detection sensor is clean. Yes No

  Motor gear is lubricated properly. Yes No

  Accessories Enough electrolyte cream (CardioCream) Yes NoEnough
  recording paper. Yes No

  Installation Instrument is installed in the proper location. Yes
  No

  Specified 3-prong power cord and ground lead are used. Yes
  No

  Battery pack is in the instrument. Yes No

  Recording paper is loaded. Yes No

  Power on There is no fire, smoke or smell. Yes No

  There is no electrical shock when touching the instrument. Yes
  No

  Instrument is not abnormally hot. Yes NoInstrument does not
  affect surrounding equipment. Yes No

  AC lamp lights when the AC power is supplied. Yes No

  Battery charge lamp lights when the AC power is supplied. Yes
  No

  Basic operation The screen display is correct. (brightness, no
  distortion) Yes No

  Key lamp indication is correct. Yes No

  All keys operate properly. Yes No

  All settings are correct. Yes No

  The battery is fully charged. Yes No

  Electrode detachment functions properly. Yes NoThere is no error
  message or abnormal operation. Yes No

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  36/96

  2. MAINTENANCE

  2.6 Service Manual ECG-9620

  Maintenance Check Sheet

  Monitoring ECG waveform display is correct. Yes No

  The continuity of the ECG connection cable is correct. Yes
  No

  Heart rate display is correct. Yes No

  QRS sync mark is displayed and heart rate sync sound generates.
  Yes No

  ECG lead and sensitivity can be changed properly. Yes No

  Alarms setting and alarm function is correct. Yes No

  Sound volume can be changed properly. Yes No

  Recording Paper is fed correctly (no skewing or jam). Yes No

  Waveforms and letters are clearly recorded. Yes No

  Time printed on the recording paper is correct. Yes No

  System Test Recorder Pass Fail

  Key Pass Fail

  Memory Pass Fail

  LCD/LED Pass Fail

  Input unit Pass Fail

  Calibration Pass Fail

  Communication Pass Fail

  CRO/EXT1 Pass Fail

  Safety Protective earth resistance Pass Fail

  Earth leakage current Pass Fail

  Enclosure leakage current Pass Fail

  Withstanding voltage Pass Fail

  2/2

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  37/96

  Service Manual ECG-9620 3C.1

  Section 3 Troubleshooting andSystem Error Message

  Troubleshooting Flowchart
  …………………………………………………………………………………….
  3.1

  Troubleshooting Table
  …………………………………………………………………………………………..
  3.4

  Troubleshooting General Operation Problem
  ………………………………………………….. 3.4

  Troubleshooting Recording Problem
  ………………………………………………………………
  3.6

  System Error Message
  …………………………………………………………………………………………
  3.7

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  38/96

  3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

  Service Manual ECG-9620 3.1

  This section describes how to troubleshoot the instrument, using
  the following:

  — flowchart

  — troubleshooting table

  — system error messages at power-up

  NOTE

  If the power is not turned off by pressing the Power key, press
  and

  hold the Power key 5 seconds or more.

  Troubleshooting Flowchart

  Use the troubleshooting flowchart to find the possible sources
  of a problem.

  Is there any response when

  any key is pressed?

  Check that the LCD cable is

  connected to the CNJ201

  connector on the key board.

  The LCD unit is faulty.

  The key board is faulty.

  The ECG control board is faulty.

  The power LED is on but

  there is no LCD display.

  No

  Yes Normal

  The key board is faulty.

  The ECG control board is faulty.

  NormalCheck that the CNA013 cable is connected to the

  CNJ033 connector on the ECG control board and

  CNJ101 connector on the key board.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  39/96

  3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

  3.2 Service Manual ECG-9620

  Check the following cable connections

  Between transformer unit and power board

  CNA014 (between the power board and

  ECG control board

  CNA013 (between the ECG control board

  and key board)

  The power unit is faulty.

  The power transformer is faulty.

  The power of the

  instrument does not turn

  on.

  Does the instrument

  operate during AC

  power operation?

  The instrument does not

  operate during battery

  power operation.

  Is the battery charged? Charge the battery.

  Replace the battery fuse

  on the power board.

  Does the LED of the AC power

  light?

  The key board is faulty.

  The ECG control board is faulty.

  The power board is faulty.Normal

  Is the battery F101 or F102

  fuse on the power board blown?

  Check the power fuse in the

  fuse holder.

  The power board is faulty.

  The power transformer is faulty.

  No

  Yes

  Yes

  No

  Normal

  Normal

  Yes

  No

  Yes

  No

  Check the following cable connections

  Between transformer unit and power board

  CNA014 (between the power board and

  ECG control board

  CNA013 (between the ECG control board

  and key board)

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  40/96

  3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

  Service Manual ECG-9620 3.3

  The recorder does not

  feed the recording paper

  when the Start key ispressed.

  Does the LED for the Start

  key light?

  Does the recorder print

  when the recording paper

  is manually pulled out

  from under the thermal

  head?

  Check that CNA011 cable is

  connected to the CNJ036 connector

  on the ECG control board.

  The motor is faulty.

  The ECG control boardis faulty.

  Is the recording paper set? Set the recording paper.

  Check that the CNA013 cable is

  connected to the CNJ033 connector

  on the ECG control board and

  CNJ101 connector on the key board.

  Lights

  Brinks

  The ECG control board

  is faulty.

  The key board is faulty.

  Yes

  Normal

  No

  No

  Normal

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  41/96

  3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

  3.4 Service Manual ECG-9620

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

  instrument. The problems are divided into general operation and
  recording. Each

  category has its own troubleshooting table for fast and easy
  troubleshooting.

  How to use the troubleshooting table

  1. Determine which troubleshooting table to use.

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

  3. Do the action recommended in the Corrective Action
  column.

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

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

  dealer.

  Troubleshooting Table

  Troubleshooting General

  Operation Problem

  Problem Possible Cause Action

  The power LED lights but nothing is

  displayed on the LCD screen.

  Faulty cable connection. Check the following cable
  connection.

  CNA013: between the ECG control

  board and key board

  LCD cable: CNJ201 connector on the

  key board.CNA014: between the power board

  and ECG control board

  Faulty LCD unit. Replace the LCD unit.

  Faulty key board. Replace the key board.

  Faulty ECG control board. Replace ECG the control board.

  Faulty power fuse. Replace the power fuse.

  Faulty cable connection Check the following cable
  connection.

  CNA013: between the ECG control

  board and key board

  CNA014: between the power boardand ECG control board.

  Power cable: between the power board

  and power transformer

  unit

  Faulty power cord Replace the power cord.

  Faulty power board. Replace the power board.

  Faulty key board. Replace the key board.

  Faulty ECG control board. Replace ECG the control board.

  The instrument does not operate on AC

  power.

  Faulty power transformer unit, Replace the power transformer
  unit.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  42/96

  3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

  Service Manual ECG-9620 3.5

  Problem Possible Cause Action

  The instrument does not operate on

  battery power.

  The battery is not charged. Charge the battery.

  Faulty battery fuse. Replace the battery fuse.

  Faulty battery. Replace the battery.

  Check the following cable connection.

  CNA013: between the ECG control

  board and key board

  CNA014: between the power board

  and ECG control board.

  Battery cable:CNJ102 connector on the

  power board

  Faulty power board. Replace the power board.

  No key operation Faulty cable connection Check the following
  cable connection.

  CNA013: between the ECG control

  board and key board

  CNA014: between the power board

  and ECG control board.

  Faulty key board. Replace the key board.

  Faulty ECG control board. Replace ECG the control board.

  Faulty electrode attachment. Check that the electrodes are
  properly

  attached to the patient.

  Faulty patient cable connection. Check that the patient cable is
  firmly

  connected to the electrodes and

  instrument.

  No ECG waveform appears in a

  specific lead or artifact appears on the

  waveform.

  Faulty ECG control board. Replace the ECG control board.

  No ECG waveform appears in all

  channels or artifact appears on the

  waveform.

  No electrode is attached to the patient

  or the RF (RL) electrode is not attached

  to the patient.

  Check that the electrodes are properly

  attached to the patient.

  Faulty ECG control board. Replace the ECG control board.

  Vertical and horizontal stripes appear

  on the LCD screen at constant interval.

  Faulty cable connection. Check the following cable
  connection.

  CNA013: between the ECG controlboard and key board

  LCD cable: CNJ201 connector on the

  key board.

  Faulty ECG control board. Replace the ECG control board.

  Faulty LCD unit. Replace the LCD unit.

  No sound Faulty cable connection. Check that the speaker cable
  is firmly

  connected to the CNJ032 connector on

  the ECG control board.

  Faulty speaker. Replace the speaker.

  The date and time is reset to January 1,

  1980 and the Error 09 error message

  appears.

  The lithium battery is completely

  discharged.

  Replace the ECG control board. The

  lithium battery is in the real time clock

  IC on the ECG control board.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  43/96

  3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

  3.6 Service Manual ECG-9620

  Troubleshooting Recording

  Problem

  Problem Possible Cause Action

  Dirty paper sensor. Clean the paper sensor.

  Faulty cable connection. Check the following cable
  connection.

  CNA013: between the ECG control

  board and key board

  CNA011: between the ECG control

  board and feeding motor,

  motor sensor and paper

  sensor

  Faulty key board. Replace the key board.

  Faulty ECG control board. Replace the ECG control board.

  The recorder does not feed the

  recording paper when the Start key is

  pressed.

  Faulty feeding motor. Replace the feeding motor.

  No printing. The thermal head is incorrectly

  positioned.

  Readjust the position of the thermal

  head.

  Faulty cable connection. Check the following cable
  connection.

  CNA013: between the ECG control

  board and key board

  CNA011: between the ECG control

  board and feeding motor,

  motor sensor and paper

  sensor

  Faulty thermal head. Replace the thermal head.Faulty power
  board. Replace the power board.

  Faulty ECG control board. Replace the ECG control board.

  Sometimes the recorder does not print. The thermal head
  protection circuit

  which protects the thermal head from

  large artifact, such as AC interference is

  rejecting noisy waveforms.

  Check the electrode attachment. If

  necessary, adjust the electrode position

  so that clear ECG waveforms are

  displayed.

  The paper skews. Dirty thermal head. Clean the thermal head.

  The recording paper is not properly set

  in the instrument.

  Make sure that the recording paper is

  aligned with the lower recording paper

  guide.The thermal head is incorrectly

  positioned.

  Readjust the position of the thermal

  head.

  Faulty feeding roller. Replace the paper magazine.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  44/96

  3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

  Service Manual ECG-9620 3.7

  System Error Message

  During power-up and operation the instrument continuously checks
  itself for

  system failure. If a failure is detected, system information and
  error history are

  printed on the recording paper and all operations are stopped.
  System information

  and error history are also displayed or printed due to transient
  noise. After printing

  the system information and error history, the power of the
  instrument is

  automatically turned off.

  NOTE

  If the same system information appears again after restarting
  the

  instrument, do not use the instrument until service personnel
  has

  corrected the cause of the problem. Sending a copy of the
  system

  information to your nearest Nihon Kohden distributor helps us
  to

  troubleshoot your problem quickly.

  System Information

  Indicates an error number to identify the problem. To solve the
  problem, do the

  corrective action described below.

  Error No. Meaning Corrective Action

  00 Input unit error: An interrupt signal of 2 ms

  is generated.

  Replace the ECG control board.

  01 Input unit error: There is no response to the

  host.

  Replace the ECG control board.

  02 Input unit error: Communication protocol

  error.

  Replace the ECG control board.

  03 4 bit CPU error: Initialization error. Replace the ECG
  control board.

  04 4 bit CPU error: No response error. Replace the ECG control
  board.

  05 A key on the key board is short-circuited. Replace the key
  board.

  06 RTC error: No interrupt signal of 125 ms. Replace the ECG
  control board.

  07 RTC error: Incorrect data in SRAM. Replace the ECG control
  board.

  09 The lithium battery to back up the date and

  time and all system settings is completelydischarged. The system
  settings other than

  the items described in the following note

  are returned to the factory initial settings.

  Replace the ECG control board. The

  lithium battery is in the real time clock ICon the ECG control
  board. The date and

  time is reset to January 1, 1980.

  10 Bus error. Replace the ECG control board.

  11 Address error. Replace the ECG control board.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  45/96

  3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

  3.8 Service Manual ECG-9620

  NOTE

  Error 05 also appears when any key on the operation panel is

  pressed and held down.

  When Error 08 appears, the following settings are not reset
  tothe factory initial settings even if the instrument is
  initialized.

  — display language — hum filter

  — hospital name — direct/modem connection

  — recording resolution setting — elapsed time

  — local language font — saved ECG data

  Error No. Meaning Corrective Action

  12 Illegal command. Replace the ECG control board.

  13 Zero division error. Replace the ECG control board.

  14 Power off time out. Replace the ECG control board.

  15 EEPROM error: This occurs due to the

  EEPROM check error, installed language

  error or communication error between the

  host and EEPROM.

  Replace the ECG control board.

  16 Local language flash memory error. Replace the ECG control
  board.

  17 ECG model error. Replace the ECG control board.

  18 Local language is not installed. Install the local
  language.

  19 Local language is not installed. Install the local
  language.

  Error in memory area for local language. Re-install the local
  language.

  20 Local language text file version does not

  match the ECG software version.

  Install the local language text file which is

  the same version as the ECG software.

  21 ECG interpretation error (Time over). Check the input
  waveforms. If any noise

  is superimposed on the waveforms, find

  and eliminate the cause. If no noise is

  superimposed on the waveform, replace the

  ECG control board.

  22 The entered information does not match

  the data in the flash memory.

  Replace the ECG control board.

  27 Program version error. The program is

  updated.

  Turn the power off, then on and check that

  the ECG waveforms are displayed

  correctly.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  46/96

  3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

  Service Manual ECG-9620 3.9

  Error History

  Indicates the latest three errors and the date of the latest
  error, as in the example

  below.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  47/96

  Service Manual ECG-9620 4C.1

  Section 4 System Test, Adjustment,And Setting

  System Test
  ………………………………………………………………………………………………………..
  4.1

  Overall
  ………………………………………………………………………………………………………
  4.1

  Calling up the System Test Level 1
  ………………………………………………………………..
  4.2

  Calling up the System Test Level 2
  ………………………………………………………………..
  4.3

  Entering the System Test Number
  …………………………………………………………………
  4.4

  Executing the System Test
  ……………………………………………………………………………
  4.5

  Quitting the System Test
  ………………………………………………………………………………
  4.6

  Exiting the System Test
  Mode……………………………………………………………………….
  4.6

  Demonstration
  …………………………………………………………………………………………………….
  4.7

  Recorder
  …………………………………………………………………………………………………………….
  4.8

  Thermal Head
  ……………………………………………………………………………………………………
  4.10

  Key…………………………………………………………………………………………………………………..
  4.11

  Memory
  …………………………………………………………………………………………………………….
  4.12

  Single Memory Test Mode
  ………………………………………………………………………….
  4.13

  Continuous Memory Test Mode
  …………………………………………………………………..
  4.13

  LCD/LED…………………………………………………………………………………………………………..
  4.14

  Input Unit
  ………………………………………………………………………………………………………….
  4.16

  Calibration
  …………………………………………………………………………………………………………
  4.17

  Communication
  ………………………………………………………………………………………………….
  4.18

  CRO/EXT1
  ………………………………………………………………………………………………………..
  4.20

  System Setup Initialization
  …………………………………………………………………………………..
  4.22ECG Findings List
  Recording……………………………………………………………………………….
  4.23

  Recording Resolution Setting
  ………………………………………………………………………………
  4.24

  Date and Time Setting
  ………………………………………………………………………………………..
  4.25

  Setting the Date and Time
  ………………………………………………………………………….
  4.25

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  48/96

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  49/96

  4. SYSTEM TEST, ADJUSTMENT AND SETTING

  4.2 Service Manual ECG-9620

  Calling up the System Test

  Level 1

  1. If the power is on, turn it off.

  NOTE

  Release the Feed/Mark key immediately after the instrument
  starts

  printing. If you continue to hold the Feed/Mark key for more
  than 15

  seconds, the instrument recognizes that the Feed/Mark key is
  short-

  circuited and prints the system information Error 05 at the end
  of

  printing.

  2. Press the Power key while pressing the Feed/Mark key. Hold
  the Feed/Mark key

  until the instrument begins to print the system test procedure,
  relationship

  between the input number and its corresponding key name on the
  operation

  panel and system test number list as shown below. The Test level
  1 is called up

  and the instrument is in standby mode for entering the system
  test number.

  To cancel printing the following information, press the
  Start/Stop key.

  .

  System Test Screen

  Printout

  +

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  50/96

  4. SYSTEM TEST, ADJUSTMENT AND SETTING

  Service Manual ECG-9620 4.3

  Calling up the System Test

  Level 2

  1. If the power is on, turn it off.

  NOTE

  Release the Feed/Mark key immediately after the instrument
  starts

  printing. If you continue to hold the Feed/Mark key for more
  than 15

  seconds, the instrument recognizes that the Feed/Mark key is
  short-

  circuited and prints the system information Error 05 at the end
  of

  printing.

  2. Press the Power key while pressing the Feed/Mark and
  Auto/Manual keys

  together. Hold the Feed/Mark and Auto/Manual keys until the
  instrument begins

  to print the system test procedure, relationship between the
  input number and its

  corresponding key name on the operation panel and system test
  number list as

  shown below. The Test level 2 is called up and the instrument is
  in standby

  mode for entering the system test number.

  To cancel printing the following information, press the
  Start/Stop key.

  System Test Screen

  Printout

  ++

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  51/96

  4. SYSTEM TEST, ADJUSTMENT AND SETTING

  4.4 Service Manual ECG-9620

  Numeric Key Numeric Key

  0 Copy/CAL key 5 Rhythm key

  1 F1 function key 6 Age key

  2 F2 function key 7 Sex key

  3 F3 function key 8 Feed/Mark key

  4 Mode key 9 Filter key

  Clear Auto/Manual key Enter Start/Stop key

  Entering the System Test

  Number

  Use the following keys on the operation panel to enter a 2-digit
  number for

  executing the desired system test. The specified system test
  numbers are indicated

  in the [xx] bracket at the right of each system test item on the
  printout output when

  the Test level 1 or 2 is called up. Refer to the Calling up the
  Test Level X

  section.

  To delete the entered number, press the Auto/Manual key. To
  delete a 2-digit

  number, press the Auto/Manual key twice. At this time, the ones
  digit number is

  deleted before the tens digit number is deleted.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  52/96

  4. SYSTEM TEST, ADJUSTMENT AND SETTING

  Service Manual ECG-9620 4.5

  Press the Start/Stop key. For some tests, the System Test screen
  is displayed

  during the test as shown below,

  System Test Screen

  If you entered an unspecified number, 8 repeating pips alarm
  sound and the

  Invalid number. Please re-enter number error message is
  displayed as shown

  below.

  To re-enter the system test number, do either of the following:
  Delete the previously entered number by pressing the Auto/Manual
  key.

  Enter the system test number by overwriting the previously
  entered number.

  Executing the System Test

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  53/96

  4. SYSTEM TEST, ADJUSTMENT AND SETTING

  4.6 Service Manual ECG-9620

  Quitting the System Test The procedures to quit each system test
  vary from test to test. Some tests

  automatically end after an alarm sound is generated or a
  printout is output. Refer

  to the following explanations for each test. After quitting each
  test, the instrument

  returns to the standby mode for entering the system test
  number.

  After a system test is completed, you can execute other system
  test without exiting

  the System Test mode.

  Exiting the System Test

  ModeAfter all desired system tests are finished, press the Power
  key.

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  54/96

  4. SYSTEM TEST, ADJUSTMENT AND SETTING

  Service Manual ECG-9620 4.7

  Demonstration

  This is used to learn or demonstrate instrument operation.

  While executing this test item, the instrument generates dummy
  12 lead ECG

  resting waveforms until the power of the instrument is turned
  off. The ECG

  waveforms can be recorded and also displayed as shown below.

  Procedure

  Enter the system test number [00] (Test level 1) and press the
  Start/Stop key.

  To quit the test, turn the power of the instrument off by
  pressing the Power key.

  Dummy 12 lead ECG resting waveforms on LCD

• 8/13/2019 Nihon-Kohden ECG-9620 ECG Monitor — Service Manual

  55/96

  4. SYSTEM TEST, ADJUSTMENT AND SETTING

  4.8 Service Manual ECG-9620

  Recorder

  This is used to check the condition of the recorder by printing
  test patterns. The

  recording test patterns consist of the following and are printed
  in the following

  order:

  1. Diagonal lines

  2. Characters H and X (Test level 1 only)

  3. Paper speed scales (25 and 50 mm/s)

  The recorder test of Test level 1 contains the same recorder
  test and thermal head

  test as Test level 2. With regard to the check procedure for
  characters H and X,

  refer to the Thermal Head section.

  Procedure

  Enter the system t

ecg 9620 service manual

LINK 1 ENTER SITE >>> Download PDF
LINK 2 ENTER SITE >>> Download PDF

File Name:ecg 9620 service manual.pdf
Size: 2986 KB
Type: PDF, ePub, eBook

Category: Book
Uploaded: 9 May 2019, 21:57 PM
Rating: 4.6/5 from 695 votes.

Status: AVAILABLE

Last checked: 10 Minutes ago!

In order to read or download ecg 9620 service manual ebook, you need to create a FREE account.

Download Now!

eBook includes PDF, ePub and Kindle version

✔ Register a free 1 month Trial Account.

✔ Download as many books as you like (Personal use)

✔ Cancel the membership at any time if not satisfied.

✔ Join Over 80000 Happy Readers

ecg 9620 service manualDiscover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime. Report this Document Download Now Save Save Nihon-Kohden ECG-9620 ECG Monitor — Service Manual For Later 0 ratings 0 found this document useful (0 votes) 702 views 96 pages Nihon-Kohden ECG-9620 ECG Monitor — Service Manual Uploaded by Claudio Alejandro Description: Full description Save Save Nihon-Kohden ECG-9620 ECG Monitor — Service Manual For Later 0 0 found this document useful, Mark this document as useful 0 0 found this document not useful, Mark this document as not useful Embed Share Print Download Now Jump to Page You are on page 1 of 96 Search inside document Browse Books Site Directory Site Language: English Change Language English Change Language. Flag for inappropriate content. Descarga.Operator’s Manual ECG-9620. Checking the Software Version Sending a copy of the system information to your nearest Nihon Kohden distributor helps.Manufacturer is owned by MedWOW, should you have any questions regarding a specific item, please direct them to the appropriate seller by making use of the available communication channels on the items.Esta entrada es sobre la serie BSM-3000 de los monitores de signos vitales de Nihon Kohden. Soporte Equipos Biomedicos Manual de Operacion Electrocardiografo Nihon Kohden ECG 9620 CARDIOFAX.ECAPS12C provides simultaneous 12 lead ECG acquisition and analysis with 200 findings and 5 judgements. ECG data management on a PC ECG files can be transferred to a PC that has ECG Viewer software. You can review and print ECG files.vi Operator’s Manual ECG-1150 consult operator’s manual Date of manufacture Alternating current Serial number Equipotential terminal The CE mark is a protected conformity mark of the European Community. ECG-9620 is compact.A wide variety of nihon kohden ecg electrodes options are available to you, such as free samples.Use only Nihon Kohden approved products with this device.http://cv-vezouze.fr/media/crystal-mh-665-manual.xml

Tags:
• ecg 9620 service manual, cardiofax ecg-9620 service manual, ecg 9620 service manual, ecg 9620 service manual user, ecg 9620 service manual pdf, ecg 9620 service manual instructions, ecg 9620 service manual download.

Use of non-approved products or in a non-approved manner may affect the performance specifications of the device. This includes.OPERATOR’S MANUALElectrocardiograph ECG-1150 Electrocardiograph Nihon-Kohden ECG-9620 ECG Monitor — Service Manual. Nihon Kohden The entire contents of this manual are copyrighted by Nihon Kohden. All rights are.cardiofax ecg machine service manual, free. User’s Guide Instructions Book Operating Manual Service manual Workshop Manual Repair Manual FAURE FOUR CCT 685 DAEWOO FRS U20DCC MACHINE A LAVER PROLINE LOGIC PFL 1266W FZR 600 90326 TE SMEG PLA 6248 B Nihon Kohden Cardiofax ECG 9620 CROWN ELECTRIC SPRAY MIDEA MSE. Recent Nihon Kohden Cardiofax.High Quality Nihon Kohden SB-901D Battery Shopping Online Here, 1 Year Warranty, Replacement Nihon Kohden SB-901D ECG EKG Monitor Battery Buy Now Save Up To 30. High Quality SB-901D Battery Replacement For Nihon Kohden ECG-9620 ECG-6951D ECG-9620P ECG-6951E ECG-1950 ECG-1150 ECG-1250 ECG-1250A ECG-1250P ECG-1250C ECG EKG Vital Sign Monitor.Nihon Kohden Corporation Cardiofax, Lifescope, and Nihon Kohden Novarad Corporation NovaCardio and Novarad Physio-Control, Inc Physio-Control, LIFEPAK, and LIFENET SafeNet Data Security Ltd. HASP Schiller Holding AG CARDIOVIT ScImage, Inc ScImage and PICOM Shenzhen Mindray Bio -Medical Electronics, Inc. Mindray, BeneHeart, and BeneVision.Nihon Kohden Cardiofax GEM ECG-1350K ECG Machine with ECG Leads.Fast Shipping: We shipping Nihon Kohden Battery the same day, and you can choose two shipping ways. The faster way will only take 2-5 days Worldwide. Please leave a recipient’s phone number for Secure delivery at first. Thank you, Happy shopping. Good Tips For Getting Maximum Shelf Life For Your Nihon Kohden Biomedical Battery. Medical Equipment Nihon Kohden ZM-920PA User Manual. Vital signs telemetry ecg transmitter (99 pages) Summary of Contents for Nihon Kohden ECG-9010K.Nihon Kohden ECG-9022K Manuals Manuals and User Guides for Nihon Kohden ECG-9022K.http://www.houtackers.nl/userfiles/crystal-mountain-glacier-water-cooler-manual.xml User Manual. Version 1.1 — 022010 from Software T.15xSp3.bin.- 1 User Manual, — 1 power cable with charger, — Carrying case.Care Cycle Solutions We support the community and play an active role outside the hospital. El cardiografo registra 12 derivaciones de las ondas ECG simultaneamente y analiza las ondas adquiridas.Nihon Kohden Cardiofax Gem User Nihon Kohden Bsm 6000 Service Manual AAPDF01623406 CHM Free Nihon Kohden NIHON KODEN Cardiofax 9620 ECG unit Service Manual. Mon, 2012-10-29 16:08— Anonymous (not verified) File Upload: Free download nihon kohden service manual PDF PDF Manuals Library. 2014.08.18 NIHONKOHDEN AMERICA, INC. SPECIAL 510(K).Shop from the world’s largest selection and best deals for Nihon Kohden ECG EKG Systems. Shop with confidence on eBay. Skip to main content.Cette section propose des solutions pour resoudre.Nihon Kohden Service Manual vennerette operator’s manual, user’s guide(2vols.), tok ol nihon kohden service manual — haas manual nihon kohden cardiofax m manual — kindle manuals study nihon kohden bsm 3 manual in touch manual nihon kohden tec 7621 defibrillator service manual pdf is manitowoc crane operators manual nihon kohden bsm 6000 service.Service Manual ECG-9620. C.1 Troubleshooting General Operation Problem qualified user technical personnel upon request from your Nihon Kohden.9.10 Operator’s Manual ECG-9620 Checking the Software Version The software version numbers are also printed at the bottom space of the paper in automatic or manual ECG recording.REHA aktiv 2000 GmbH. EKG-Diagnostik Patientenmonitore.Bypass to add Knee. Operated. Water.This service manual provides useful information to qualified service personnel to understand, troubleshoot, service, maintain and repair the ECG-9010K, ECG- The information in the operator’s manual is primarily for the user. However, it is Nihon Kohden Corporation’s basic policy for technical service is to replace faulty.Cardiofax Ecg-9620 M Service Manual DOWNLOAD (Mirror.http://gbb.global/blog/boss-506ca-manual Nihon Kohden — ECG-9020K. ECG Recording for Most Mammals. and. Interpretive ECG Analysis.View online or download Nihon kohden ECG-9020K Service Manual. 20 Apr 1998 iii. Patient cable. Defibrillation-proof. Type CF applied part. Attention, consult operator’s manual. If you want to possessNihon-Kohden ECG-9620 ECG Monitor — Service Manual — Download as PDF File (.pdf), Service Manual ECG-9620 C.1 Cardiofax Gem Ecg-9010k 9020k. Firearms and Hunting View and Download Nihon Kohden ECG-9010K service manual online.. SERVICE MANUAL cardiofax GEM ELECTROCARDIOGRAPH ECG-9010K, ECG-9020K ECG-9020P. ECG-9020K Electrocardiograph 1. GENERAL Service Manual ECG-9620 1.17 Composition To order a replacement assembly above, use the Code No. To order a replacement component inside an assembly. User Manual — SunTech Medical Service Centers. Nihon-Kohden ECG-9620 ECG Monitor — Service Manual. TXT or read online from Scribd.. SERVICE MANUAL.. Cardiofax Ecg Machine Service Manual Cardiofax Ecg Machine Service Manual. Cardiofax M Manual Ready to read online or download. Nihon Kohden Cardiofax ECG 9620 Service manual 12.3 MB Download Nihon Kohden CNS-8200 Service.Based on work at subtlepatterns.com. But now when turn it on, all parameters displaying on screen are blur and all functions are ok. Does anybody have circuit schematic of this machine, please send me a copy.You need setting the brightness more darker, it will display properly. Wish you success !! I have change another LCD unit but this fault stills remain. So I need circuit schematic to solve it. Thanks for your advice. Good luck. I’ve read service manual but this thing is not mentioned in it. I have adjusted brightness of screen and now it is ok. Good luck. Cardiofax ECG-9620 3 Kanal EKG mit Interpretation. Scanner Linotyp Hell S 3900 with SW 13.4 and PowerBox. After service we peform an new DIN VDE 701. Feel Better. Your Health Search Engine for Finding Better Medical Information.http://genlab-sports.com/images/car-audio-video-navigation-system-e12-manual.pdf Nihon Kohden manufacturer specifications for ECG-9320A-1 ECG on MedWOW medical equipment global. 13.8 (30.4) Type. Cardiofax GEM ECG-9620 — Nihon Kohden. Worldwide Location. Head Office and International Subsidiaries and Representative Offices. Suite 15-13, Level 15, GTower, 199 Jalan Tun Razak,.Service Manual.. ECG Analysis on Medium Size Dog 11 — 12 b. Exercise Two: ECG Analysis on a Cat 11 — 13 c. Exercise. 0634-001325b service manual. 8830A Cardiofax 7514 ECG Model Clock Battery 8330A.95 13. ecg-1250a series cardiofax s and ecg-1350a series cardiofax m. Fiche technique du fabricant de Cardiofax M. Service de Publication d’articles.. Cardiofax M (ECG-1350A), Nihon Kohden. Learn more about the Nihon Kohden ECG-9620 EKG Machine Model ECG-9620 and other EKG Machine from Nihon Kohden visit our website. Our inventory is updated daily. MidwayUSA is a privately held American retailer of various hunting and outdoor-related products.. manuel de service, manuel d’atelier.Manual nihon kohden cardiofax ecg 9620 — user’s. NIHON KODEN Cardiofax 9620 ECG unit Service Manual. For Cardiofax M, Cardiofax Q, Cardiofax.Cardiofax ECG-9620 3 Kanal EKG mit Interpretation medizintechnik, Medizintechnik, gebrauchte, gebraucht, medical, equipment, Krankenhaustechnik. Nihon Kohden Cardiofax User Manual NIHON KOHDEN BSM 6000 SERVICE MANUAL Read or Download nihon kohden cardiofax gem user manual Online. Nihon Kohden Cardiofax M Manual.pdf Free Download Here Service manual — Frank’s Hospital Workshop. Instant credit account for NHS. Free delivery, usually next day. Tlchargements illimits pour NIHON KOHDEN CARDIOFAX ECG 9620 — Documents PDF. View Homework Help — NihonKodenCardiofaxECG-9620-Repairmanual from BA 101 at Vietnam National University, Ho Chi Minh City.Feel Better. Your Health Search Engine for Finding Better Medical Information.Nihon-Kohden ECG-9620 ECG Monitor — Service Manual — Download as PDF File (.pdf), Text File (.txt) or read online. Scribd is the world’s largest social reading and publishing site. Nihon kohden cardiofax m manual rasgode,.Instant credit account for NHS. NIHON KOHDEN EKG PATIENT CABLE BA-903D. 10-lead with GRABBER lead ends. Recent Nihon Kohden Cardiofax Q Ecg-9130k questions,. 20 Most Recent Nihon Kohden Cardiofax Q Ecg-9130k.Cardiofax Ecg 1350a Manual Nihon Kohden ECG 1350A. ECG Model Clock Battery 8330A.95 13.00 32. 1cbf73630d. Programming and providing support for this service has been a laborWe have even fought hard to defend yourDue to the issues imposed on us by advertisers, weWe hope you appreciate our efforts.PayPal Acct. Feedback: VoyForums ™ is a Free Service from Voyager Info-Systems. Bitte aktiviere JavaScript. Por favor,activa el JavaScript! Special thanks to Nihon Vogue who graciously In the Let’s Knit Series pattern books (published by. Med employee. case, the parties “do not object to the court’s choice of method;. Refer to the Operator manual for the analysers. Manual mode:. These books contain exercises and tutorials to improve your practical skills, at all levels!This site does not host pdf, DOC files all document are the property of their respective owners. Please respect the publisher and the author for their creations if their books are copyrighted. PERC Installing Mini PERC M.2 SSD Removing x8 PCIe M.2 card Installing x8 PCIe M.2 card Removing x8 SATA M.2 card Installing x8 SATA M.2 card Removing x16 PCIe M.2 card Installing x16 PCIe M.2 card Removing x16 SATA M.2 card Installing x16 SATA M.2 card PCIe card Removing PCIe card Installing PCIe card OCP card Removing OCP card from slot 1 Installing OCP card into slot 1 Removing OCP card from slot 3 Installing OCP card into slot 3 3M riser card Removing 3M riser card Installing 3M riser card NPIO card Removing NPIO card from the rear bay Installing NPIO card in the rear bay Removing NPIO card from hot swappable bay Installing NPIO card in hot swappable bay NPDB Removing NPDB Installing NPDB NVMe riser Removing NVMe riser Installing NVMe riser Hard drive backplane Removing HDD. Due to continuing product innovation, specifications in this manual are subject to change without notice. Listed below are GE Medical Systems Information Technologies. View and Download Martin MAC 600E user manual online. MAC 600E Lighting Equipment pdf manual download. Also for: Mac 600, Mac 600e. GE Healthcare MAC 600 ECG User Manual. ECG, fetal, vital signs, bedside, anaesthesia, NIBP and patient monitors. Pulse oximeter are separate. Equipment of Criticon, GE, Hellige and Marquette might be identical. The same applies to Mediana and Nellcor and to Philips and HP. Support is not desired. Dixtal DX -2020 Technical manuals 56.7 MB Download Drager Gamma Service manual 21.3 MB Download Drager Vitalert 3000 Service manual 1.0 MB Download Fukuda Denshi Alpha 1000 ECG-Holter Service manual 1.5 MB Download Fukuda Denshi FCP-2155 Service manual 11.8 MB Download Fukuda Denshi FCP-7101, 7102 Service manual 6.9 MB Download Fukuda Denshi FX-2111 Service manual 5.6 MB Download GE ApexPro Telemetry Antenna Service manual 1.4 MB Download prohibited by GE. GE ApexPro Telemetry Receiver Service manual 4.1 MB Download prohibited by GE. GE ApexPro Telemetry Server Service manual 26.0 MB Download prohibited by GE. GE ApexPro Telemetry Transmitter Service manual 4.2 MB Download prohibited by GE. GE B-30 Technical reference manual 9.4 MB Download prohibited by GE. GE CAM 14 Aquisition Module Service manual 1.1 MB Download prohibited by GE. GE CardioSoft Software manual 2.7 MB Download prohibited by GE. GE Carescape V100 Service manual 4.5 MB Download prohibited by GE. GE Carescape B450 Technical manual 2012 10.1 MB Download prohibited by GE. GE Carescape B650 Technical manual 2012 6.2 MB Download prohibited by GE. GE Carescape B650 Technical manual 2013 6.3 MB Download prohibited by GE. GE Carescape B850 V1 Technical manual 5.2 MB Download prohibited by GE. GE Carescape B850 V2 Service manual 8.5 MB Download prohibited by GE. GE Case Exercise Testing System Service manual 10.9 MB Download prohibited by GE. GE Case 8000 Exercise Testing System Service manual 6.0 MB Download prohibited by GE. GE CIC Pro and Unity Network Service manual 4.0 MB Download prohibited by GE. GE CIC Pro Clinical Information Center Service manual 8.8 MB Download prohibited by GE. GE Corometrics 170 Service manual 3.4 MB Download prohibited by GE. GE Corometrix 250cx Service manual 2.7 MB Download prohibited by GE. GE Critical Care Monitoring Clinical reference and troubleshooting guide 2.1 MB Download prohibited by GE. GE Dash 2500 Service manual 4.6 MB Download prohibited by GE. GE Dash 3000,4000,5000 Service manual 16.1 MB Download prohibited by GE. GE Dash 3000,4000,5000 (V7) Service manual 5.8 MB Download prohibited by GE. GE Dash 3000 Maintenance procedure 280 kB Download prohibited by GE. GE Dash CapnoFlex CO2Module Setup instructions 600 KB Download prohibited by GE. GE Dash Port 2 Docking Station Service manual 4.0 MB Download prohibited by GE. GE Dinamap Compact Service manual 790 KB Download prohibited by GE. GE Dinamap Pro 100 — 400 Service manual 880 KB Download prohibited by GE. GE Dinamap Pro 100 — 400 V2 Service manual 3.7 MB Download prohibited by GE. GE Dinamap Pro 100 — 400 Maintenance procedure 350 KB Download prohibited by GE. GE Dinamap Pro 110 — 410 Service manual 2.0 MB Download prohibited by GE. GE Dinamap Pro 1000 Service manual 10.1 MB Download prohibited by GE. GE Dinamap Pro 1000 V3 Pre-service manual 3.6 MB Download prohibited by GE. GE Dinamap Pro 1000 V3 Service manual 7.4 MB Download prohibited by GE. GE Dinapmap ProCare Service manual 4.4 MB Download prohibited by GE. GE Dinamap ProCare Service manual 3.7 MB Download prohibited by GE. GE Dinamap ProCare Alarm codes 60 KB Download prohibited by GE. GE Dinamap ProCare Test procedures 1.0 MB Download prohibited by GE. GE Eagle 4000 Service manual 6.8 MB Download prohibited by GE. GE MAC 500 Analysis System Service manual 2.4 MB Download prohibited by GE. GE MAC 800 Analysis System Service manual 4.6 MB Download prohibited by GE. GE MAC 1100,1200 Analysis System Service manual 2.6 MB Download prohibited by GE. GE MAC 1200 Analysis System Service manual 2.2 MB Download prohibited by GE. GE MAC 1600 Analysis System Service manual 10.1 MB Download prohibited by GE. GE MAC 3500 Analysis System Service manual 5.9 MB Download prohibited by GE. GE MAC 5000 Analysis System Service manual 4.9 MB Download prohibited by GE. GE MAC 5500 Analysis System Service manual 5.4 MB Download prohibited by GE. GE PDM Patient Data Module Service manual 1.5 MB Download prohibited by GE. GE PRN 50 Printer Service manual 2.7 MB Download prohibited by GE. GE Remote Alarm Box Service manual 1.0 MB Download prohibited by GE. GE Solar 8000 Service manual 2.6 MB Download prohibited by GE. GE Solar 9500 Service manual 8.0 MB Download prohibited by GE. GE TRAM 100-850 Service manual 45.8 MB Download prohibited by GE. GE TRAM 451,851 Service manual 3.1 MB Download prohibited by GE. GE TRAM-RAC 4A Housing Service manual 5.9 MB Download prohibited by GE. GE TRAM-RAC Technical overview 4.6 MB Download prohibited by GE. GE TRAM X-51 Service manual 4.0 MB Download prohibited by GE. GE Transport Pro Service manual 1.7 MB Download prohibited by GE. Marquette MAC 5500 Service manual 5.4 MB Download prohibited by GE. Mennen Envoy Service manual 21.0 MB Download prohibited by Mennen. Mennen Vitalogik Service manual 1.6 MB Download prohibited by Mennen. MidMark IQmark Service manual 2.1 MB Download Mindray does not support the repair of older equipment. (???) But at least the service manuals of the latest models can be downloaded here. Mindray Accutorr 3 Service manual 1.0 MB Download prohibited by Mindray. Mindray Accutorr 7 Service manual 1.2 MB Download prohibited by Mindray. Mindray Acctorr Plus Service manual 4.8 MB Download prohibited by Mindray. Mindray Accutorr V Service manual 3.3 MB Download prohibited by Mindray. Mindray BeneView T-5 Service manual (2007) 3.9 MB Download prohibited by Mindray. Mindray BeneView T-5 Service manual (2013) 4.3 MB Download prohibited by Mindray. Mindray BeneView T-8 Service manual 3.7 MB Download prohibited by Mindray. Mindray BeneView T-6, T-8, T-9 Service manual 5.4 MB Download prohibited by Mindray. Mindray Datascope Panorama Service manual 1.5 MB Download prohibited by Mindray. Mindray Datascope Passport 2, 2LT Service manual 4.4 MB Download prohibited by Mindray. Mindray Datascope Spectrum Service manual 5.9 MB Download prohibited by Mindray. Mindray Datascope Viewstation OR Service manual 623 KB Download prohibited by Mindray. Mindray Duo Datascope Service manual 2.2 MB Download prohibited by Mindray. Mindray Gas Module Service manual 2.7 MB Download prohibited by Mindray. Mindray Hypervisor 6 Service manual 850 KB Download prohibited by Mindray. Mindray iMEC8,iMEC10,iMEC12 Service manual 2.5 MB Download prohibited by Mindray. Mindray MEC 1000 Service manual 850 KB Download prohibited by Mindray. Mindray Datascope Accutorr Service manual 2.3 MB Download prohibited by Mindray. Mindray Datascope Duo Service manual 2.2 MB Download prohibited by Mindray. Mindray Datascope Passport V Service manual 5.6 MB Download prohibited by Mindray. Mindray Datascope Trio Service manual 3.0 MB Download prohibited by Mindray. Mindray Datascope Gas Module Service manual 2.7 MB Download prohibited by Mindray. Mindray DP-6 Service manual 5.2 MB Download prohibited by Mindray. Mindray DPM-3 Service manual 1.7 MB Download prohibited by Mindray. Mindray DPM-7 Service manual 5.1 MB Download prohibited by Mindray. Mindray DPM Central Station Service manual 1.9 MB Download prohibited by Mindray. Mindray DRM-4 Service manual 1.9 MB Download prohibited by Mindray. Mindray DRM-5 Service manual 2.5 MB Download prohibited by Mindray. Mindray Passport Service manual 6.3 MB Download prohibited by Mindray. Mindray PM 7000 Service manual 1.8 MB Download prohibited by Mindray. Mindray PM 8000 Service manual 1.2 MB Download prohibited by Mindray. Mindray PM 9000 Express Service manual V1 3.2 MB Download prohibited by Mindray. Mindray PM-9000 Express Service manual V3.2 2.4 MB Download prohibited by Mindray. Mindray T1 Service manual 2.2 MB Download prohibited by Mindray. Mindray Trio Service manual 3.0 MB Download prohibited by Mindray. Mindray V-Series Service manual 15.2 MB Download prohibited by Mindray. Mindray VS-800 Service manual 1.3 MB Download prohibited by Mindray. Spacelabs 91369 Service manual 8.3 MB Download prohibited by Spacelabs. Spacelabs 91370 Service manual 8.0 MB Download prohibited by Spacelabs. Spacelabs 91370 Circuit diagrams 3.1 MB Download prohibited by Spacelabs. Spacelabs 91387 Service manual 2.8 MB Download prohibited by Spacelabs. Spacelabs 91387 Circuit diagrams 4.2 MB Download prohibited by Spacelabs. Spacelabs Bedside Service manual 2.9 MB Download prohibited by Spacelabs. Spacelabs Clinical Workstation Service manual 3.3 MB Download prohibited by Spacelabs. Spacelabs Elance Patient Monitor Service manual 2.1 MB Download prohibited by Spacelabs. Spacelabs PC Scout Transport Service manual 12.1 MB Download prohibited by Spacelabs. Spacelabs Ultraview 1030 Service manual 3.3 MB Download prohibited by Spacelabs. Spacelabs Ultraview 1030, 1050 Service manual Rev.K 3.5 MB Download prohibited by Spacelabs. Spacelabs Ultraview 1030, 1050 Service manual Rev.L 3.4 MB Download prohibited by Spacelabs. Spacelabs Ultraview 1030, 1050 Monitor Service manual Rev.L 4.9 MB Download prohibited by Spacelabs. Spacelabs Ultraview 1030, 1050 Circuit diagrams 6.8 MB Download prohibited by Spacelabs. Spacelabs Ultraview 1050 Technical reference 7.1 MB Download prohibited by Spacelabs. Spacelabs Ultraview 1500,1600 Service manual 3.0 MB Download prohibited by Spacelabs. Spacelabs Ultraview 1500 Circuit diagrams 4.3 MB Download prohibited by Spacelabs. Spacelabs Ultraview 1600 Circuit diagrams 4.3 MB Download prohibited by Spacelabs. Spacelabs Ultraview Command Module Service manual 1.2 MB Download prohibited by Spacelabs. Support is not desired.Would you like to try it too? Please try again later. Attorneys of record and parties who are ECF registered users will receive one free electronic copy of all documents filed electronically. Attorneys, parties, and pro se litigants may view civil and criminal dockets as well as electronically filed documents via the Internet using the PACER (Public Access to Court Electronic Records) portion of the system. Learn more. It is the responsibility of the filer to maintain records and information regarding charge card transactions associated with electronic filings. All of this information is provided by the filer by electronic receipt when the electronic filing is submitted and further information is provided by electronic notification when a new case is processed and opened. Application for Refund of Fees Paid Electronically Through Pay.Gov. To obtain a login and password, please contact Customer Service at 602-322-7200. Once assigned login credentials, please click here for complete instructions. The Ethics Commission’s Electronic Case Filing system (ECF) will only accept documents in a portable document format (PDF). Although there are two types of PDF documents, electronically converted PDFs and scanned PDFs, electronically converted PDFs are preferable for filing using the ECF system. Electronically converted PDFs are created from word processing documents (MS Word, WordPerfect, etc.) using Adobe Acrobat or similar software. They are text searchable and their file size is small. Scanned PDF’s are generally not searchable and have a larger file size. Registration is accomplished by completing an ECF Registration Form, a copy of which is available by clicking here.A document shall not be considered filed until the system generates an NEF. The filer shall retain a paper or digital copy of the NEF, which shall serve as the Ethics Commission’s date-stamp and proof of filing. Any pleading or other paper served by electronic means must bear a certificate of service stating that the document has been filed and that it will be served electronically to all parties of record who have registered with the ECF system. All pleadings and other papers must be served on all parties who have not registered with the ECF system in the traditional manner. Any pleading or other paper served in the traditional manner must bear a certificate of service stating the manner in which the document has been filed. All electronic transmissions of documents must be completed prior to 5:00 p.m., Eastern Standard Time, in order to be considered timely filed that day. Where a specific time of day deadline is set by the Hearing Officer, the electronic filing must be completed by that time. For example: All electronically filed documents must include a signature block and must set forth the individual’s name. The individual’s mailing address, telephone number and e-mail address must be included in the text portion of the e-mail sent to the Ethics Commission to which the document to be electronically filed is attached. For example: By submitting such a document, the filer certifies that each of the other signatories has expressly agreed to the form and substance of the document and that the filer has their actual authority to submit the document electronically. The filer shall retain any records evidencing this concurrence for future production, if necessary, until two (2) years after the expiration of the time for filing a timely appeal. A non-filing signatory or party who disputes the authenticity of an electronically filed document containing multiple signatures must file an objection to the document within seven (7) days of the date on the NEF. The filer shall retain the original for future production, if necessary, for two (2) years after the expiration of the time for filing a timely appeal. Please note that affidavits should not contain the home addresses of any individuals. At this time, the Ethics Commission will not permit the electronic filing of sealed documents. A party may electronically file a motion to file a document under seal. If the motion is granted, the assigned Hearing Officer will file an order authorizing the filing of the document under seal. The filer shall then deliver the document to the Ethics Commission for conventional filing under seal. Excerpted material must be clearly and prominently identified as such. Users who file excerpts of documents do so without prejudice to their right to timely file additional excerpts or the complete document, as may be allowed by the Hearing Officer. Responding parties may timely file additional excerpts or the complete document that they believe are directly germane. Documents significantly larger than 2 megabytes will be rejected by the ECF system. Filers should take into consideration that scanned images take up considerably more space on the system than PDF files containing electronically generated documents converted to PDF. 2. Because documents scanned in color or containing a graphic take much longer to upload, filers must configure their scanners to scan documents at 200 dpi and in black and white rather than in color. Documents appearing in color in their original form, such as color photographs, may be scanned in color and then attached to the main document and sent through the ECF system. 3. The filer is required to verify the readability of scanned documents before filing them electronically with the Ethics Commission. 4. Documents or exhibits submitted conventionally shall be served on other parties as if not subject to these procedures. When filing the document electronically, two versions of the document must be submitted: (1) a redacted version, and (2) the original un-redacted version.

ECG-9620L

ECG-9620M

ECG-9620N

ECG-9620P

ECG-9620S

ECG-9620T

ECG-9620U

SERVICE MANUAL

cardiofax

ELECTROCARDIOGRAPH

ECG-9620

08CK2.782.00516

CONTENTS

Contents

GENERAL HANDLING PRECAUTIONS ……………………………………………………………………… i

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

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

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

Dangers, Warnings, Cautions and Notes …………………………………………………………… iv

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

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

Introduction …………………………………………………………………………………………………………. 1.1

General Information on Servicing …………………………………………………………………………… 1.2

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

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

Service Parts ……………………………………………………………………………………………… 1.4

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

Maintenance Equipments and Tools ………………………………………………………………. 1.5

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

Specifications …………………………………………………………………………………………………….. 1.11

Panel Descriptions ……………………………………………………………………………………………… 1.14

Front Panel ………………………………………………………………………………………………. 1.14

Left Side Panel ………………………………………………………………………………………….. 1.14

Operation Panel ………………………………………………………………………………………… 1.15

Right Side Panel ……………………………………………………………………………………….. 1.15

Rear Panel ……………………………………………………………………………………………….. 1.16

Composition ………………………………………………………………………………………………………. 1.17

Standard Components ……………………………………………………………………………….. 1.17

Options ……………………………………………………………………………………………………. 1.17

Location ……………………………………………………………………………………………………………. 1.18

Section 2 Maintenance …………………………………………………………………2C.1

Replacement ……………………………………………………………………………………………………….. 2.1

Periodic Replacement Schedule ……………………………………………………………………. 2.1

Cleaning and Lubrication ………………………………………………………………………………………. 2.2

Cleaning and Greasing Schedules ………………………………………………………………… 2.2

Cleaning the Paper Mark Sensor and Paper Empty Sensor ………………………………. 2.2

Cleaning the Motor Rotation Sensor and Lubricating the Motor Gear and Gear

Meshed with Motor Gear ……………………………………………………………………………… 2.3

Maintenance Check Sheet …………………………………………………………………………………….. 2.5

Section 3 Troubleshooting and System Error Message ………………….3C.1

Troubleshooting Flowchart …………………………………………………………………………………….. 3.1

Troubleshooting Table …………………………………………………………………………………………… 3.4

Troubleshooting General Operation Problem …………………………………………………… 3.4

Service Manual ECG-9620 C.1

CONTENTS

Troubleshooting Recording Problem ………………………………………………………………. 3.6

System Error Message …………………………………………………………………………………………. 3.7

Section 4 System Test, Adjustment and Setting …………………………….4C.1

System Test ………………………………………………………………………………………………………… 4.1

Overall ………………………………………………………………………………………………………. 4.1

Calling up the System Test Level 1 ………………………………………………………………… 4.2

Calling up the System Test Level 2 ………………………………………………………………… 4.3

Entering the System Test Number …………………………………………………………………. 4.4

Executing the System Test ……………………………………………………………………………. 4.5

Quitting the System Test ………………………………………………………………………………. 4.6

Exiting the System Test Mode ……………………………………………………………………….. 4.6

Demonstration …………………………………………………………………………………………………….. 4.7

Recorder …………………………………………………………………………………………………………….. 4.8

Thermal Head ……………………………………………………………………………………………………. 4.10

Key …………………………………………………………………………………………………………………… 4.11

Memory …………………………………………………………………………………………………………….. 4.12

Single Memory Test Mode ………………………………………………………………………….. 4.13

Continuous Memory Test Mode …………………………………………………………………… 4.13

LCD/LED …………………………………………………………………………………………………………… 4.14

Input Unit ………………………………………………………………………………………………………….. 4.16

Calibration …………………………………………………………………………………………………………. 4.17

Communication ………………………………………………………………………………………………….. 4.18

CRO/EXT1 ………………………………………………………………………………………………………… 4.20

System Setup Initialization …………………………………………………………………………………… 4.22

ECG Findings List Recording ……………………………………………………………………………….. 4.23

Recording Resolution Setting ………………………………………………………………………………. 4.24

Date and Time Setting ………………………………………………………………………………………… 4.25

Setting the Date and Time ………………………………………………………………………….. 4.25

Section 5 Board/Unit Description ………………………………………………….5C.1

Block Diagram ……………………………………………………………………………………………………… 5.1

Power Unit ………………………………………………………………………………………………………….. 5.2

ECG Control Board ………………………………………………………………………………………………. 5.2

Section 6 Disassembly …………………………………………………………………6C.1

Before You Begin ………………………………………………………………………………………………….. 6.1

Warnings and Cautions ……………………………………………………………………………….. 6.1

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

Cable Connection ………………………………………………………………………………………………… 6.2

Removing the Upper Casing ………………………………………………………………………………….. 6.4

Removing the Magazine and Recording Paper ……………………………………………….. 6.4

Removing the Battery Pack ………………………………………………………………………….. 6.4

Removing the Upper Casing …………………………………………………………………………. 6.4

Removing the Thermal Head and Motor Assy ………………………………………………………….. 6.5

Removing the Thermal Head ………………………………………………………………………… 6.5

C.2

Service Manual ECG-9620

CONTENTS

Removing the Motor Assy …………………………………………………………………………….. 6.6

Removing the ECG Control Board ………………………………………………………………………….. 6.6

Removing the Power Board …………………………………………………………………………………… 6.8

Removing the Power Board ………………………………………………………………………….. 6.8

Replacing the Power Fuse and Battery Fuse ………………………………………………….. 6.9

Removing the Key Board and LCD Unit …………………………………………………………………. 6.10

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

Instrument …………………………………………………………………………………………………………… 7.2

Section 8 Connector Pin Assignment …………………………………………….. 8.1

Attaching the Ferrite Core …………………………………………………………………………….. 8.1

EXT-IN Connector ……………………………………………………………………………………….. 8.2

CRO-OUT Connector ………………………………………………………………………………….. 8.2

SIO Connector ……………………………………………………………………………………………. 8.2

Service Manual ECG-9620 C.3

GENERAL HANDLING PRECAUTIONS

This device is intended for use only by qualified medical personnel.

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

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

1.

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

2.

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

(1) Avoid moisture or contact with water, dust, extreme atmospheric pressure, excessive humidity and temperatures, poorly ventilated areas, and saline or sulphuric air.

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

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

(4) The power line source to be applied to the instrument must correspond in frequency and voltage to product specifications, and have sufficient current capacity.

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

3.

Before Operation

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

(2) Check that the instrument is grounded properly.

(3) Check that all cords are connected properly.

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

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

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

4.

During Operation

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

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

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

5.

To Shutdown After Use

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

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

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

6.

The instrument must receive expert, professional attention for maintenance and repairs. When the instrument is not functioning properly, it should be clearly marked to avoid operation while it is out of order.

7.

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

8.

Maintenance and Inspection:

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

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

Service Manual ECG-9620 i

(3) Technical information such as parts list, descriptions, calibration instructions or other information is available for qualified user technical personnel upon request from your Nihon Kohden distributor.

9.

When the instrument is used with an electrosurgical instrument, pay careful attention to the application and/or location of electrodes and/or transducers to avoid possible burn to the patient.

10. When the instrument is used with a defibrillator, make sure that the instrument is protected against defibrillator discharge. If not, remove patient cables and/or transducers from the instrument to avoid possible damage.

WARRANTY POLICY

Nihon Kohden Corporation (NKC) shall warrant its products against all defects in materials and workmanship for one year from the date of delivery. However, consumable materials such as recording paper, ink, stylus and battery are excluded from the warranty.

NKC or its authorized agents will repair or replace any products which prove to be defective during the warranty period, provided these products are used as prescribed by the operating instructions given in the operator’s and service manuals.

No other party is authorized to make any warranty or assume liability for NKC’s products. NKC will not recognize any other warranty, either implied or in writing. In addition, service, technical modification or any other product change performed by someone other than NKC or its authorized agents without prior consent of NKC may be cause for voiding this warranty.

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

Shipping costs must be pre-paid.

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

Kohden approval or which have been subjected to neglect or accident, damage due to accident, fire, lightning, vandalism, water or other casualty, improper installation or application, or on which the original identification marks have been removed.

ii Service Manual ECG-9620

EMC RELATED CAUTION

This equipment and/or system complies with the International Standard IEC60601-1-2 for electromagnetic compatibility for medical electrical equipment and/or system. However, an electromagnetic environment that exceeds the limits or levels stipulated in the IEC60601-1-2, can cause harmful interference to the equipment and/or system or cause the equipment and/or system to fail to perform its intended function or degrade its intended performance. Therefore, during the operation of the equipment and/or system, if there is any undesired deviation from its intended operational performance, you must avoid, identify and resolve the adverse electromagnetic effect before continuing to use the equipment and/or system.

The following describes some common interference sources and remedial actions:

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

Install the equipment and/or system at another location if it is interfered with by an emitter source such as an authorized radio station. Keep the emitter source such as cellular phone away from the equipment and/or system.

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

Identify the cause of this interference and if possible remove this interference source. If this is not possible, use a different power supply.

3. Effect of direct or indirect electrostatic discharge:

Make sure all users and patients in contact with the equipment and/or system are free from direct or indirect electrostatic energy before using it.

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

If the equipment and/or system interferes with any radio wave receiver, locate the equipment and/or system as far as possible from the radio wave receiver.

If the above suggested remedial actions do not solve the problem, consult your Nihon Kohden Corporation subsidiary or distributor for additional suggestions.

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

B.

Service Manual ECG-9620 iii

Conventions Used in this Manual and Instrument

Dangers, Warnings, Cautions and Notes

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 possible injury or death associated with the use or misuse of the instrument.

CAUTION

A caution alerts the user to possible injury or problems with the instrument associated with its use or misuse such as instrument malfunction, instrument failure, damage to the instrument, or damage to other property.

NOTE

A note provides specific information, in the form of recommendations, prerequirements, alternative methods or supplemental information.

iv Service Manual ECG-9620

Explanations of the Symbols in this Manual and Instrument

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

Cardiograph

Symbol Symbol Description

Attention, consult operator’s manual

Equipotential terminal

Description

Type CF applied part

Serial number

Serial input/output terminal

Date of manufacture

Input terminal for analog signal

Output terminal for analog signal

Eject (magazine release button)

Patient cable

Symbol Description

Attention, consult operator’s manual

Defibrillation-proof

Type CF applied par

Symbol Description

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.

Service Manual ECG-9620 v

Operation panel

Symbol Description

Alternating current

“On” only for a part of equipment

“Off” only for a part of equipment

Battery charging

Battery check

/

F1

F2

F3

0

Copy / Calibration

1

F1 function key

2

F2 function key

3

F3 function key

4

Mode

On screen

Symbol Description

QRS sync mark

CAL mark

Symbol

/

Description

5

Rhythm

6

Age

7

Sex

8

Paper feed / Mark

/

9

Filter

Automatic / Manual control

CLR Clear

Start/Stop recording

ENT Enter

A key with a numeric number is used to enter numbers in the System Setup screen and paient information.

vi Service Manual ECG-9620

Section 1 General

Introduction ………………………………………………………………………………………………………… 1.1

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

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

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

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

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

Maintenance Equipments and Tools ……………………………………………………………… 1.5

General Safety Information …………………………………………………………………………………… 1.6

Specifications ……………………………………………………………………………………………………. 1.11

Panel Descriptions …………………………………………………………………………………………….. 1.14

Front Panel ……………………………………………………………………………………………… 1.14

Left Side Panel …………………………………………………………………………………………. 1.14

Operation Panel ……………………………………………………………………………………….. 1.15

Right Side Panel ………………………………………………………………………………………. 1.15

Rear Panel ………………………………………………………………………………………………. 1.16

Composition ……………………………………………………………………………………………………… 1.17

Standard Components ………………………………………………………………………………. 1.17

Options …………………………………………………………………………………………………… 1.17

Location …………………………………………………………………………………………………………… 1.18

Service Manual ECG-9620 1C.1

Introduction

1. GENERAL

This service manual provides useful information to qualified service personnel to understand, troubleshoot, service, maintain and repair the ECG-9620L/M/N/P/S/T/

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

The System test, Adjustment and Setting section in this service manual describes the maintenance that should be performed by qualified service personnel. The

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

The information in the operator’s manual is primarily for the user. However, it is important for service personnel to thoroughly read the operator’s manual and service manual before starting to troubleshoot, service, maintain or repair this instrument. This is because service personnel need to understand the operation of the instrument in order to effectively use the information in the service manual.

Service Manual ECG-9620 1.1

1. GENERAL

General Information on Servicing

Note the following information when servicing the instrument.

CAUTIONS

Safety

• There is the possibility that the outside surface of the instrument, such as the operation keys, could be contaminated by contagious germs, so disinfect and clean the instrument before servicing it.

When servicing the instrument, wear rubber gloves to protect yourself from infection.

• There is the possibility that when the lithium battery is broken, a solvent inside the lithium battery could flow out or a toxic substance inside it could come out. If the solvent or toxic substance touches your skin or gets into your eye or mouth, immediately wash it with a lot of water and see a physician.

Liquid ingress

The instrument is not waterproof, so do not install the instrument where water or liquid can get into or fall on the instrument. If liquid accidentally gets into the instrument or the instrument accidentally drops into liquid, disassemble the instrument, clean it with clean water and dry it completely. After reassembling, verify that there is nothing wrong with the patient safety checks and function/ performance checks. If there is something wrong with the instrument, contact your Nihon Kohden representative 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 instrument, wipe it with a nonabrasive cloth moistened with alcohol. Do not use any other disinfectants or ultraviolet rays to disinfect the instrument.

1.2

Service Manual ECG-9620

Service Manual ECG-9620

1. GENERAL

Caution — continued

Transport

• Use the specified shipment container and packing material to transport the instrument. If necessary, double pack the instrument.

Also, put the instrument into the shipment container after packing so that the buffer material does not get inside the instrument.

• When transporting a board or unit of the instrument, be sure to put it in a conductive bag. Never use an aluminum bag to transport a board or unit. Also, never use a styrene foam or plastic bag which generates static electricity to wrap the board or unit of the instrument.

Handling the instrument

• Because the outside surface of the instrument is made of resin, the outside surface of the instrument is easily damaged. So when handling the instrument, remove clutter from around the instrument and be careful to not damage the instrument or get it dirty.

• Because most of the boards in the instrument are multilayer boards with surface mount electrical devices (SMD), a special tool is required to remove and solder the electrical devices on it. 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.

1.3

1. GENERAL

Service Policy, Service Parts and Patient Safety Checks

Service Policy

Our technical service policy for this instrument is to replace the faulty unit, board or part or damaged mechanical part with a new one. Do not perform electrical device or component level repair of the multilayer board or unit. We do not support component level repair outside the factory for the following reasons:

• Most of the boards are multilayer boards with surface mount 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 mount electrical devices.

Only disassemble the instrument or replace a board or unit in an environment where the instrument is protected against static electricity.

Service Parts

Refer to “Replaceable Parts List” of this manual for the service parts for technical service that we provide.

NOTE

When ordering parts or accessories from your Nihon Kohden representative, please quote the NK code number and part name which is listed in this service manual, and the name or model of the unit in which the required part is located. This will help us to promptly attend to your needs. Always use parts and accessories recommended or supplied by Nihon Kohden Corporation to assure maximum performance from your instrument.

1.4

Service Manual ECG-9620

Patient Safety Checks

1. GENERAL

Periodic maintenance procedures and diagnostic check procedures are provided in this manual to ensure that the instrument is operating in accordance with its design and production specifications. To verify that the instrument is working in a safe manner with regard to patient safety, patient safety checks should be performed on the instrument before it is first installed, periodically after installation, and after any repair is made on the instrument.

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

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

Maintenance Equipments and Tools

Test equipment

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

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

10 attenuating probe and 100 MHz or more frequency response characteristic must be provided.

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

Service Manual ECG-9620 1.5

1. GENERAL

General Safety Information

DANGER

• Never use this cardiograph in the presence of any flammable anesthetic gas or high-concentration oxygen atmosphere. Failure to follow this warning may cause explosion or fire.

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

Failure to follow this warning may cause explosion or fire.

WARNING

Using with an electrical surgical unit (ESU)

• Never use this cardiograph near an ESU. The cardiograph may malfunction due to high-frequency noise from the ESU.

• When using this cardiograph with an ESU, refer to the instruction manual for the ESU. Before measurement, check that the return plate is correctly attached to the patient and check that the cardiograph operates correctly when using with the ESU. If the return plate is not attached correctly, it may burn the patient’s skin where the electrodes are attached.

MRI examination

• Do not install this cardiograph in an MRI examination room. The cardiograph may not operate properly due to high-frequency magnetic noise from the MRI.

• When performing MRI tests, remove from the patient all electrodes which are connected to this cardiograph. Failure to follow this warning may cause serious electrical burn on the patient due to local heating caused by dielectric electromotive force. For details, refer to the instruction manual for the MRI.

When performing defibrillation

• Before defibrillation, remove all electrodes and gel from the chest of the patient. If the defibrillator paddle touches electrodes or gel, the discharged energy may burn the patient’s skin.

• Before defibrillation, all persons must keep clear of the bed and must not touch the patient or any equipment connected to the patient.

Failure to follow this warning may cause serious electrical burn, shock or other injury.

1.6

Service Manual ECG-9620

1. GENERAL

Warning — continued

Use only the following specified patient cables when using with a defibrillator or ESU. When the specified patient cable is connected, the cardiograph is type CF defibrillation-proof compliance. Failure to follow this warning will cause serious electrical burn where the electrode is attached and damage the cardiograph due to discharge energy when defibrillation is performed.

Patient cable: BJ-901D – IEC standard, 3 mm diameter tip

BJ-902D – IEC/DIN standard, 4 mm diameter tip

BJ-903D – IEC/DIN standard, clip

BA-901D – AHA requirement, 3 mm diameter tip

BA-903D – AHA requirement, color clip

When using an ESU and defibrillator with the cardiograph, use silver chloride disposable electrodes.

Installation

Service Manual ECG-9620

WARNING

• Only use the 3-prong power cord provided with the cardiograph.

Failure to follow this caution may cause electrical shock to the patient and operator.

• Only use the specified patient cable and connect the external instruments with the specified installation procedure. Failure to follow this warning may cause a serious electrical shock to the patient and operator by leakage current.

CAUTION

• When the provided 3-prong power cord cannot be used, operate the cardiograph on battery power. When another type of power cord

(especially 2-prong power cord) is used, this may cause electrical shock to the patient and operator.

• When several medical instruments are used together, ground all instruments at the same one-point ground to protect the patient and operator from electrical shock. Any potential difference between instruments may cause electrical shock to the patient and operator.

• When connecting an external instrument to connectors marked with

, the external instrument and this cardiograph must be connected according to the IEC60601-1-1 “Medical electrical equipment — Part 1-

1: General requirements for safety — Collateral standard: Safety requirements for medical electrical systems”. Failure to follow this warning may cause electrical shock to the patient and operator.

• When inserting or removing the battery from the cardiograph, make sure that the cardiograph is turned off. Otherwise, the patient and operator may get an electrical shock.

1.7

1. GENERAL

Battery Pack

DANGER

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

Otherwise, the substance liquid leaks 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 liquid 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 substance liquid comes out and the battery pack explodes.

• Do not use a battery pack 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 pack to explode.

• Do not subject the battery pack to a strong mechanical shock. The susbstance liquid inside the battery leaks and explodes.

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

• Only charge the battery pack with the ECG-9620 cardiograph. If any other battery charger is used, abnormal current flows and the substance liquid 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 liquid inside the battery leaks out and the battery pack explodes.

• The battery has + and – polarity. Make sure that the battery is installed with the correct polarity direction. Otherwise, the substance inside the battery leaks out and the battery pack explodes.

• Use only the SB-901D battery pack.

WARNING

• Do not immerse the battery pack in water or seawater. The battery heats up and rusts and the substance liquid inside the battery leaks.

• Never use a battery pack which is damaged, discolored or has leakage. A damaged battery pack explodes if used.

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

1.8

Service Manual ECG-9620

Operation

Service Manual ECG-9620

1. GENERAL

CAUTION

• Do not charge the deteriorated battery pack. Otherwise, the cardiograph cannot operate on battery power.

• Do not expose the battery pack to direct sunlight or leave in a high temperature place. The life time of the battery pack may be shortened, the performance of the battery pack may be degraded and the substance liquid inside the battery may leak.

• Do not leave the battery pack where patients can reach it.

• Before disposing of the battery pack, 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.

CAUTION

• Enter the patient information correctly. Otherwise, the ECG data may be lost or mixed up with another patient’s ECG data.

ECG recording judgement

• The cardiograph provides automatic ECG analysis function. The automatic ECG analysis is performed for acquired ECG waveforms only and does not reflect all conditions of the patient. The results of the analysis may not correspond to the judgment of a physician.

• Overall judgement must be performed by the physician, referring to the analysis result, clinical findings, and other examination results.

After the physician’s overall judgement, the analysis results should be signed or initialed by the physician.

• Take care when judging the ECG recording because the 25 Hz EMG filter may cause greater distortion of P-waves and QRS-waves depending on the waveform shape. The characteristics of the EMG filter are similar to a conventional analog filter.

• Do not use the output signal from the output connector for a synchronization signal such as the synchronized cardioversion signal. There is a time delay between the input ECG signal and output signal.

• When the cardiograph operates on battery power and large leakage current is input from the connected external instrument, ground the cardiograph or use an isolation transformer for the external instrument. Failure to follow this caution may cause electrical shock to patient and operator.

• Use only the KD-103E cart for the cardiograph. When another cart is used, the cardiograph may fall off or the cart may tip over.

1.9

1. GENERAL

Maintenance

Caution — continued

• Never use the cardiograph with its side panel downward. Failure to follow this caution may cause the cardiograph to fall over or cause battery liquid leakage.

NOTE

• When using the battery pack and the battery operation lamp is blinking in orange, measurement results may not be saved.

CAUTION

• Before maintenance (cleaning, disinfection), make sure that the cardiograph is turned off and the power cord is removed from the AC outlet and cardiograph. Otherwise, the operator may get an electrical shock and the cardiograph may malfunction.

• Before battery replacement, make sure that the cardiograph is turned off and the power cord is removed from the AC outlet and cardiograph. Otherwise, the operator may get an electrical shock.

• Do not disassemble or repair the cardiograph. Disassembly and repair must be performed by qualified service personnel.

1.10

Service Manual ECG-9620

1. GENERAL

Specifications

ECG input

Input impedance

Electrode offset tolerance

Input unit protection

10 M

Ω

or more

±500 mV or more

Isolated and defibrillator protected only when the following specified patient cable is connected

Patient cable: BJ-901D, BJ-902D, BJ-903D, BA-901D, BA-903D

Standard sensitivity 10 mm /mV ±2%

Common mode rejection ratio 100 dB or more

Frequency response 0.05 to 150 Hz – 3 dB or more

Waveform data processor

Sample rate

AC line filter

High-cut filter

EMG filter

Time constant

Waveform status detection

Sensitivity selection

500 samples/s (input unit: 8,000 samples/s)

50/60 Hz

75, 100, 150 Hz

25/35 Hz

3.2 s or more

Electrode detachment (polarization voltage),

Noise (high frequency)

5, 10 , 20 mm/mV

LCD (monochrome with CCFT backlight)

Size

Number of dots

ECG waveform

3.8 inch

320

×

240

6 channel: 2.8 s

Displayed data Waveform, patient information, recording settings, operation mode, heart rate,

QRS sync mark, error message, electrode detachment, noise

Recorder

Printing method

Printing density

Scanning line density

High resolution thermal printer head

200 dpi (8 dots/mm)

1 ms

Recording width 56 mm

Number of recording channels 1, 2, 3

Paper speed

Number of recording lines

Printed data

Mechanical noise

25, 50 mm/s

Up to 14

Program type, version, date and time, paper speed, sensitivity, lead name, filter,

Patient information (ID number, sex, age zone), timing mark, event mark, electrode detachment, noise

48 dB or less at paper speed 25 mm/s

External input/output

External input

Signal output

Serial I/O

10 mm/0.5 V ±5%, input impedance 100 k

0.5 V/1 mV ±5%, output impedance 100

Communication method:

Baud rate:

RS-232C

Ω

2400, 4800, 9600, 19200, 38400,

57600, 115200

Ω

or more

or less

Service Manual ECG-9620 1.11

1. GENERAL

Power requirement

Line voltage

Line frequency

Power input

Power consumption

Built-in battery (SB-901D)

ECG-9620L: 220 V AC ±10%

ECG-9620M: 230 V AC ±10%

ECG-9620N: 240 V AC ±10%

ECG-9620P: 220 V AC ±10%

ECG-9620S: 110 V AC ±10%

ECG-9620T: 120 V AC ±10%

ECG-9620U: 127 V AC ±10%

50 or 60 Hz

45 VA

45 W or less

Voltage: 12 V

Current consumption: 6 A or less

Battery operation time: Approx. 90 minutes

Environment

Operating temperature

Operating humidity

5 to 40°C (41 to 104°F)

25 to 85% RH (with battery pack and recording paper)

20 to 85% RH (with battery pack and without recording paper)

25 to 90% RH (with recording paper and without battery pack)

25 to 95% RH (without battery pack and recording paper)

Operating atmospheric pressure 70 to 106 kPa

Storage temperature

Cardiograph:

Battery pack:

-20 to 65°C (

−

4 to 149°F)

-20 to 50°C (

−

4 to 122°F) within 30 days

-20 to 40°C (

−

4 to 104°F) within 90 days

-20 to 30°C (

−

4 to 86°F) within one year

Recording paper: -20 to 50°C (

−

4 to 122°F)

Storage humidity

Cardiograph: 10 to 95% RH (non condensing)

Battery pack: 10 to 85% RH (non condensing)

Recording paper: 10 to 90% RH (non condensing)

70 to 106 kPa Storage atmospheric pressure

Electromagnetic compatibility

IEC60601-1-2 (1993), CISPR11 (1990) Group 1 Class B

Other

Indoor portable

Dimensions and weight

Dimensions

Weight

280 W

×

70 H

×

216 D mm (excluding protrusions)

Approx. 3.1 kg (with battery pack)

Approx. 2.7 kg (without battery pack)

1.12

Service Manual ECG-9620

1. GENERAL

Safety

Safety standard:

IEC60601-1 (1998)

IEC60601-1 Amendment 1 (1991)

IEC60601-1 Amendment 2 (1995)

IEC60601-2-25 (1993)

Type of protection against electric shock:

AC power: Class I

Battery power: Internally powered equipment

Degree of protection against electric shock:

Defibrillator proof type CF applied part when patient cable BJ-901D, BJ-902D, BJ-903D, BA-901D or BA-

903D is used

Degree of protection against harmful ingress of water:

Ordinary equipment

Degree of safety of application in the presence of a flammable anaesthetic mixture with air, oxygen or nitrous oxide:

Not suitable for use in the presence of a flammable anaesthetic mixture with air, oxygen or nitrous oxide

Mode of operation:

Continuous

Service Manual ECG-9620 1.13

1. GENERAL

Panel Descriptions

Front Panel

2

Left Side Panel

1

Name

1.

Operation panel

2.

Magazine (paper container)

3.

LCD screen

1

2

3

Name

1.

Magazine release button

2.

Patient cable connector

1.14

Service Manual ECG-9620

1. GENERAL

Operation Panel

7

1

3

8

9

10

2

4

1.

7.

5

6

11

12 13

Name

AC power lamp

2.

Battery operation lamp

3.

Battery charge lamp

4.

Power key/lamp

5.

Mode key

6 Rhythm key/lamp

F1, F2, F3 function keys

14

Name

8.

Age key

9.

Sex key

10. Auto/Manual key/lamp

11. Feed/Mark key

12. Filter key/lamp

13. Copy/CAL key lamp

14. Start/Stop key/lamp

Right Side Panel

CAUTION

• When connecting an external instrument to connectors marked with , the external instrument and this cardiograph must be connected according to the IEC60601-1-1 “Medical electrical equipment — Part 1-1:

General requirements for safety — Collateral standard: Safety requirements for medical electrical systems”. Failure to follow this warning may cause electrical shock to the patient and operator.

• Do not use the output signal from the output connector for a synchronization signal such as the synchronized cardioversion signal. There is a time delay between the input ECG signal and output signal.

1

2

3

4

5

Name

1.

EXT-IN connector

2.

CRO-OUT

3.

SIO connector

4.

AC power cord socket

5.

Equipotential ground terminal

Service Manual ECG-9620 1.15

1. GENERAL

Rear Panel

Battery

CAUTION

Always install the battery even when the cardiograph operates on AC power. Otherwise sudden power down occurs when any electrode is detached during recording.

1.16

Service Manual ECG-9620

1. GENERAL

Composition

Standard Components

ECG-9620L

ECG-9620M

ECG-9620N

ECG-9620P

ECG-9620S

ECG-9620T

ECG-9620U

RHC-0004 Record Assy

UTC-0009 Paper senser board

RHC-0041 Motor Assy

UTC-0010 Motor sensor board

RKC-0001 (220)

RKC-0002 (230)

RKC-0003 (240)

RKC-0004 (110)

RKC-0005 (120)

RKC-0006 (127)

RHC-0042 Magazine Assy

Transfer Assy (220 V) for L and P version

Transfer Assy (230 V) for M version

Transfer Assy (240 V) for N version

Transfer Assy (110 V) for S version

Transfer Assy (120 V) for T version

Transfer Assy (127 V) for U version

UTC-0006

UTC-0007

UTC-0008

Key board

ECG control board

Power board

Options

KD-103E

KH-801E

Cart

Patient Cable Hanger

· To order a replacement assembly above, use the Code No.

· To order a replacement component inside an assembly, refer to “Section 7

Replaceablet Parts List”.

Service Manual ECG-9620 1.17

1. GENERAL

Location

Motor Assy

Thermal Head Assy

Buzzer

LCD

Transfer Assy

Key board

ECG control board

Power board

1.18

Service Manual ECG-9620

Section 2 Maintenance

Replacement ………………………………………………………………………………………………………. 2.1

Periodic Replacement Schedule …………………………………………………………………… 2.1

Cleaning and Lubrication ……………………………………………………………………………………… 2.2

Cleaning and Greasing Schedules ……………………………………………………………….. 2.2

Cleaning the Paper Mark Sensor and Paper Empty Sensor ……………………………… 2.2

Cleaning the Motor Rotation Sensor and Lubricating the Motor Gear and Gear

Meshed with Motor Gear …………………………………………………………………………….. 2.3

Maintenance Check Sheet ……………………………………………………………………………………. 2.5

Service Manual ECG-9620 2C.1

2. MAINTENANCE

This section describes the periodic replacement and cleaning of parts which are required to maintain the instrument in good working condition.

Replacement

This subsection only describes replacement schedule for parts that need to be periodically replaced. The actual replacement procedures are described in the section for Disassembly and Assembly. Read the whole “Disassembly and Assembly” section, especially its Warnings and Cautions, before replacing any of the parts described here.

Periodic Replacement

Schedule

To maintain the performance of the instrument, the parts listed in the table below must be periodically replaced by qualified service personnel.

Code No.

SB-901D

Description

Battery pack

Recommendation

* See below.

08SK3.878.00046

Thermal head, KYT-56-8MPP1-SKH After 50 km recording

RHC-004 Motor Assy After 1000 hours operation

* Replace the battery pack when it cannot last for 30 minutes during battery operation at the temperatures between 20 and30°C.

Service Manual ECG-9620 2.1

2. MAINTENANCE

Cleaning and Lubrication

This subsection describes the cleaning and lubrication procedures for parts that must be cleaned and lubricated by qualified service personnel. The cleaning procedures for parts that can be cleaned by the user are described in the Operator’s

Manual.

Cleaning and Lubricating

Schedules

To maintain the performance of the instrument, the parts listed in the table below must be regularly cleaned or lubricated.

Part

Instrument (external)

Thermal Head

Platen Roller assy

Paper Sensor

Motor Sensor

Motor Gear and Gear

Meshed with Motor Gear

Frequency

After each use

Once a month

Once a year

Once a month

Once a year

Once a year

Performed by

User

User

User

Qualified service personnel

Qualified service personnel

Qualified service personnel

Cleaning the Paper Mark

Sensor and Paper Empty

Sensor

1.

Remove the magazine. The illustration below shows the location of the paper sensor.

2.

Use a piece of cotton moistened with alcohol to clean both sensors.

2.2

Paper sensor

Service Manual ECG-9620

2. MAINTENANCE

Cleaning the Motor

Rotation Sensor and

Lubricating the Motor Gear and Gear Meshed with

Motor Gear

1.

Remove the upper casing from the lower casing. Refer to “Removing the

Upper Casing” in Section 6.

2.

Remove the two M3 pan screws with washers and spring washers which fasten the ground leads to the power transformer unit.

Ground lead

M3 binding head screw

M3 pan screw with washer and spring washer

Thermal head unit

CNA012 cable

CNA011 cable

Motor assy

Motor sensor board

3.

Disconnect the CNA011 and CNA012 cables from the ECG control board.

4.

Remove the three M3 binding head screws which fasten the thermal head unit to the lower casing and remove the thermal head unit.

5.

Remove the two M3 binding head screws which fasten the motor assy to the thermal head unit and remove the motor assy.

6.

Remove the two M3 pan screws with spring washers which fasten the motor sensor board to the motor assy and remove the motor sensor board.

7.

Use a piece of cotton moistened with alcohol to clean the motor rotation sensor.

8.

Use a brush to clean the holes in the gear.

Service Manual ECG-9620 2.3

2. MAINTENANCE

9.

Use grease to lubricate the motor gear and the gear which directly meshes with the motor gear as shown below.

Top view

Motor

Motor gear

Gear meshed with motor gear

2.4

Service Manual ECG-9620

Maintenance Check Sheet

Customer:

Customer Address:

Service Personnel:

Instrument Name:

Instrument Serial Number:

Software Revision:

Overview

Service Company:

Instrument Model:

Hardware Revision:

Outside of instrument is clean.

No loose screws.

No physical damage, no bent parts and no contact with liquid.

Operation panel is not torn or broken.

All keys, buttons and controls are undamaged.

Power cord, patient cable are not frayed and are correctly connected to the instrument.

Paper magazine opens and closes correctly.

Thermal head is clean.

The paper feeding roller is clean.

Motor rotation sensor is clean.

Paper detection sensor is clean.

Motor gear is lubricated properly.

Accessories

Installation

Enough electrolyte cream (CardioCream)

Enough recording paper.

Instrument is installed in the proper location.

Specified 3-prong power cord and ground lead are used.

Battery pack is in the instrument.

Recording paper is loaded.

Power on

There is no fire, smoke or smell.

There is no electrical shock when touching the instrument.

Instrument is not abnormally hot.

Instrument does not affect surrounding equipment.

AC lamp lights when the AC power is supplied.

Battery charge lamp lights when the AC power is supplied.

Basic operation

The screen display is correct. (brightness, no distortion)

Key lamp indication is correct.

All keys operate properly.

All settings are correct.

The battery is fully charged.

Electrode detachment functions properly.

There is no error message or abnormal operation.

Date:

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

2. MAINTENANCE

1/2

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

No

Service Manual ECG-9620 2.5

2. MAINTENANCE

Maintenance Check Sheet

Monitoring

Recording

System Test

Safety

ECG waveform display is correct.

The continuity of the ECG connection cable is correct.

Heart rate display is correct.

QRS sync mark is displayed and heart rate sync sound generates.

ECG lead and sensitivity can be changed properly.

Alarms setting and alarm function is correct.

Sound volume can be changed properly.

Paper is fed correctly (no skewing or jam).

Waveforms and letters are clearly recorded.

Time printed on the recording paper is correct.

Recorder

Key

Memory

LCD/LED

Input unit

Calibration

Communication

CRO/EXT1

Protective earth resistance

Earth leakage current

Enclosure leakage current

Withstanding voltage

Pass

Pass

Pass

Pass

Pass

Pass

Pass

Pass

Pass

Pass

Pass

Pass

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Fail

Fail

Fail

Fail

Fail

Fail

Fail

Fail

Fail

Fail

Fail

Fail

No

No

No

No

No

No

No

No

No

No

2/2

2.6

Service Manual ECG-9620

Section 3 Troubleshooting and

System Error Message

Troubleshooting Flowchart ……………………………………………………………………………………. 3.1

Troubleshooting Table ………………………………………………………………………………………….. 3.4

Troubleshooting General Operation Problem ………………………………………………….. 3.4

Troubleshooting Recording Problem ……………………………………………………………… 3.6

System Error Message ………………………………………………………………………………………… 3.7

Service Manual ECG-9620 3C.1

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

This section describes how to troubleshoot the instrument, using the following:

— flowchart

— troubleshooting table

— system error messages at power-up

NOTE

If the power is not turned off by pressing the Power key, press and hold the Power key 5 seconds or more.

Troubleshooting Flowchart

Use the troubleshooting flowchart to find the possible sources of a problem.

The power LED is on but there is no LCD display.

Is there any response when any key is pressed?

No

Yes

Check that the LCD cable is connected to the CNJ201 connector on the key board.

Normal

The LCD unit is faulty.

The key board is faulty.

The ECG control board is faulty.

Check that the CNA013 cable is connected to the

CNJ033 connector on the ECG control board and

CNJ101 connector on the key board.

Normal

The key board is faulty.

The ECG control board is faulty.

Service Manual ECG-9620 3.1

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

The power of the instrument does not turn on.

Does the instrument operate during AC power operation?

No

The instrument does not operate during battery power operation.

Yes

Yes

Does the LED of the AC power light?

The key board is faulty.

The ECG control board is faulty.

The power board is faulty.

No

Is the battery charged?

Yes

No

Check the following cable connections

Between transformer unit and power board

CNA014 (between the power board and

ECG control board

CNA013 (between the ECG control board

and key board)

Normal

Charge the battery.

Is the battery F101 or F102 fuse on the power board blown?

No

Yes

Replace the battery fuse on the power board.

The power unit is faulty.

The power transformer is faulty.

Check the following cable connections

Between transformer unit and power board

CNA014 (between the power board and

ECG control board

CNA013 (between the ECG control board

and key board)

Normal

Check the power fuse in the fuse holder.

Normal

The power board is faulty.

The power transformer is faulty.

3.2

Service Manual ECG-9620

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

The recorder does not feed the recording paper when the Start key is pressed.

Does the LED for the Start key light?

Lights

Brinks

Does the recorder print when the recording paper is manually pulled out from under the thermal head?

Yes

Check that CNA011 cable is connected to the CNJ036 connector on the ECG control board.

Normal

The motor is faulty.

The ECG control board is faulty.

Is the recording paper set?

No

No

Check that the CNA013 cable is connected to the CNJ033 connector on the ECG control board and

CNJ101 connector on the key board.

Normal

The ECG control board

is faulty.

The key board is faulty.

Set the recording paper.

Service Manual ECG-9620 3.3

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Troubleshooting Table

Use the troubleshooting table to locate, identify and solve a problem in the instrument. The problems are divided into general operation and recording. Each category has its own troubleshooting table for fast and easy troubleshooting.

How to use the troubleshooting table

1. Determine which troubleshooting table to use.

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

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

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

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

Troubleshooting General

Operation Problem

Problem

The power LED lights but nothing is displayed on the LCD screen.

Possible Cause

Faulty cable connection.

The instrument does not operate on AC power.

Faulty LCD unit.

Faulty key board.

Faulty ECG control board.

Faulty power fuse.

Faulty cable connection

Faulty power cord

Faulty power board.

Faulty key board.

Faulty ECG control board.

Faulty power transformer unit,

Action

Check the following cable connection.

CNA013: between the ECG control board and key board

LCD cable: CNJ201 connector on the key board.

CNA014: between the power board and ECG control board

Replace the LCD unit.

Replace the key board.

Replace ECG the control board.

Replace the power fuse.

Check the following cable connection.

CNA013: between the ECG control board and key board

CNA014: between the power board and ECG control board.

Power cable: between the power board and power transformer unit

Replace the power cord.

Replace the power board.

Replace the key board.

Replace ECG the control board.

Replace the power transformer unit.

3.4

Service Manual ECG-9620

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Problem

The instrument does not operate on battery power.

Possible Cause

The battery is not charged.

Action

Charge the battery.

No key operation

No ECG waveform appears in a specific lead or artifact appears on the waveform.

No ECG waveform appears in all channels or artifact appears on the waveform.

Vertical and horizontal stripes appear on the LCD screen at constant interval.

No sound

The date and time is reset to January 1,

1980 and the “Error 09” error message appears.

Faulty battery fuse.

Faulty battery.

Faulty power board.

Faulty cable connection

Faulty key board.

Faulty ECG control board.

Faulty electrode attachment.

Faulty patient cable connection.

Replace the battery fuse.

Replace the battery.

Check the following cable connection.

CNA013: between the ECG control board and key board

CNA014: between the power board and ECG control board.

Battery cable: CNJ102 connector on the power board

Replace the power board.

Check the following cable connection.

CNA013:

CNA014: between the ECG control board and key board between the power board and ECG control board.

Replace the key board.

Replace ECG the control board.

Check that the electrodes are properly attached to the patient.

Check that the patient cable is firmly connected to the electrodes and instrument.

Replace the ECG control board.

Check that the electrodes are properly attached to the patient.

Faulty ECG control board.

No electrode is attached to the patient or the RF (RL) electrode is not attached to the patient.

Faulty ECG control board.

Faulty cable connection.

Faulty ECG control board.

Faulty LCD unit.

Faulty cable connection.

Faulty speaker.

The lithium battery is completely discharged.

Replace the ECG control board.

Check the following cable connection.

CNA013: between the ECG control board and key board

LCD cable: CNJ201 connector on the key board.

Replace the ECG control board.

Replace the LCD unit.

Check that the speaker cable is firmly connected to the CNJ032 connector on the ECG control board.

Replace the speaker.

Replace the ECG control board. The lithium battery is in the real time clock

IC on the ECG control board.

Service Manual ECG-9620 3.5

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Troubleshooting Recording

Problem

No printing.

Problem

The recorder does not feed the recording paper when the Start key is pressed.

Possible Cause

Dirty paper sensor.

Faulty cable connection.

Faulty key board.

Faulty ECG control board.

Faulty feeding motor.

The thermal head is incorrectly positioned.

Faulty cable connection.

Faulty thermal head.

Faulty power board.

Faulty ECG control board.

Sometimes the recorder does not print.

The thermal head protection circuit which protects the thermal head from large artifact, such as AC interference is

The paper skews.

rejecting noisy waveforms.

Dirty thermal head.

The recording paper is not properly set in the instrument.

The thermal head is incorrectly positioned.

Faulty feeding roller.

Action

Clean the paper sensor.

Check the following cable connection.

CNA013: between the ECG control board and key board

CNA011: between the ECG control board and feeding motor, motor sensor and paper sensor

Replace the key board.

Replace the ECG control board.

Replace the feeding motor.

Readjust the position of the thermal head.

Check the following cable connection.

CNA013: between the ECG control board and key board

CNA011: between the ECG control board and feeding motor, motor sensor and paper sensor

Replace the thermal head.

Replace the power board.

Replace the ECG control board.

Check the electrode attachment. If necessary, adjust the electrode position so that clear ECG waveforms are displayed.

Clean the thermal head.

Make sure that the recording paper is aligned with the lower recording paper guide.

Readjust the position of the thermal head.

Replace the paper magazine.

3.6

Service Manual ECG-9620

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

System Error Message

During power-up and operation the instrument continuously checks itself for system failure. If a failure is detected, system information and error history are printed on the recording paper and all operations are stopped. System information and error history are also displayed or printed due to transient noise. After printing the system information and error history, the power of the instrument is automatically turned off.

NOTE

If the same system information appears again after restarting the instrument, do not use the instrument until service personnel has corrected the cause of the problem. Sending a copy of the system information to your nearest Nihon Kohden distributor helps us to troubleshoot your problem quickly.

System Information

Indicates an error number to identify the problem. To solve the problem, do the corrective action described below.

03

04

05

06

07

09

Error No.

00

01

02

10

11

Meaning

Input unit error: An interrupt signal of 2 ms is generated.

Input unit error: There is no response to the host.

Input unit error: Communication protocol error.

4 bit CPU error: Initialization error.

4 bit CPU error: “No response” error.

A key on the key board is short-circuited.

RTC error: No interrupt signal of 125 ms.

RTC error: Incorrect data in SRAM.

The lithium battery to back up the date and time and all system settings is completely discharged. The system settings other than the items described in the following note are returned to the factory initial settings.

Bus error.

Address error.

Corrective Action

Replace the ECG control board.

Replace the ECG control board.

Replace the ECG control board.

Replace the ECG control board.

Replace the ECG control board.

Replace the key board.

Replace the ECG control board.

Replace the ECG control board.

Replace the ECG control board. The lithium battery is in the real time clock IC on the ECG control board. The date and time is reset to January 1, 1980.

Replace the ECG control board.

Replace the ECG control board.

Service Manual ECG-9620 3.7

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Error No.

12

13

14

15

16

17

18

19

20

21

Meaning

Illegal command.

Zero division error.

Power off time out.

EEPROM error: This occurs due to the

EEPROM check error, installed language error or communication error between the host and EEPROM.

Local language flash memory error.

ECG model error.

Local language is not installed.

Local language is not installed.

Error in memory area for local language.

Local language text file version does not match the ECG software version.

ECG interpretation error (Time over).

22

Corrective Action

Replace the ECG control board.

Replace the ECG control board.

Replace the ECG control board.

Replace the ECG control board.

Replace the ECG control board.

Replace the ECG control board.

Install the local language.

Install the local language.

Re-install the local language.

Install the local language text file which is the same version as the ECG software.

Check the input waveforms. If any noise is superimposed on the waveforms, find and eliminate the cause. If no noise is superimposed on the waveform, replace the

ECG control board.

Replace the ECG control board.

27

The entered information does not match the data in the flash memory.

Program version error. The program is updated.

Turn the power off, then on and check that the ECG waveforms are displayed correctly.

NOTE

•••••

“Error 05” also appears when any key on the operation panel is pressed and held down.

•••••

When “Error 08” appears, the following settings are not reset to the factory initial settings even if the instrument is initialized.

— display language

— hospital name

hum filter

direct/modem connection

— recording resolution setting elapsed time

— local language font saved ECG data

3.8

Service Manual ECG-9620

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Error History

Indicates the latest three errors and the date of the latest error, as in the example below.

Service Manual ECG-9620 3.9

Section 4 System Test, Adjustment,

And Setting

System Test ……………………………………………………………………………………………………….. 4.1

Overall ……………………………………………………………………………………………………… 4.1

Calling up the System Test Level 1 ……………………………………………………………….. 4.2

Calling up the System Test Level 2 ……………………………………………………………….. 4.3

Entering the System Test Number ………………………………………………………………… 4.4

Executing the System Test …………………………………………………………………………… 4.5

Quitting the System Test ……………………………………………………………………………… 4.6

Exiting the System Test Mode ………………………………………………………………………. 4.6

Demonstration ……………………………………………………………………………………………………. 4.7

Recorder ……………………………………………………………………………………………………………. 4.8

Thermal Head …………………………………………………………………………………………………… 4.10

Key ………………………………………………………………………………………………………………….. 4.11

Memory ……………………………………………………………………………………………………………. 4.12

Single Memory Test Mode …………………………………………………………………………. 4.13

Continuous Memory Test Mode ………………………………………………………………….. 4.13

LCD/LED ………………………………………………………………………………………………………….. 4.14

Input Unit …………………………………………………………………………………………………………. 4.16

Calibration ………………………………………………………………………………………………………… 4.17

Communication …………………………………………………………………………………………………. 4.18

CRO/EXT1 ……………………………………………………………………………………………………….. 4.20

System Setup Initialization ………………………………………………………………………………….. 4.22

ECG Findings List Recording ………………………………………………………………………………. 4.23

Recording Resolution Setting ……………………………………………………………………………… 4.24

Date and Time Setting ……………………………………………………………………………………….. 4.25

Setting the Date and Time …………………………………………………………………………. 4.25

Service Manual ECG-9620 4C.1

4. SYSTEM TEST, ADJUSTMENT AND SETTING

This section describes:

• how to check the operation of the instrument in the System Test mode.

• how to output the ECG findings list in the System Test mode.

• how to initialize the system in the System Test mode.

• how to adjust the thermal head recording resolution and recording paper cutting position in the System Test mode.

• how to set date and time in the System Setup mode.

System Test

Overall

The instrument has two System Test modes: Test level 1 for operator and Test level

2 for qualified service personnel. The test items marked with “*” perform the same test in Test levels 1 and 2. Each Test level consists of the following system test items:

Test level 1

•

Demonstration

•

Recorder

•

Key*

•

Memory*

•

LCD/LED*

•

Input unit*

•

Calibration*

•

Communication*

•

CRO/EXT1*

•

System Setup Initialization*

•

ECG Findings List Recording

Test level 2

•

Recorder

•

Thermal head

•

Key*

•

Memory (single)*

•

Memory (continuous)

•

LCD/LED* (

•

Input unit*

•

Calibration*

•

Communication*

•

CRO/EXT1*

•

System Setup Initialization*

•

Recording resolution setting

NOTE

In the description of some test items in this section, whenever it is appropriate, a description of the source of problem and its corrective action will be described in table form for fast and easy troubleshooting. If none of the actions solve the problem, contact your Nihon Kohden distributor or representative.

Service Manual ECG-9620 4.1

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Calling up the System Test

Level 1

1. If the power is on, turn it off.

NOTE

Release the Feed/Mark key immediately after the instrument starts printing. If you continue to hold the Feed/Mark key for more than 15 seconds, the instrument recognizes that the Feed/Mark key is shortcircuited and prints the system information “Error 05” at the end of printing.

+

.

2. Press the Power key while pressing the Feed/Mark key. Hold the Feed/Mark key until the instrument begins to print the system test procedure, relationship between the input number and its corresponding key name on the operation panel and system test number list as shown below. The Test level 1 is called up and the instrument is in standby mode for entering the system test number.

To cancel printing the following information, press the Start/Stop key.

Printout

System Test Screen

4.2

Service Manual ECG-9620

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Calling up the System Test

Level 2

1. If the power is on, turn it off.

NOTE

Release the Feed/Mark key immediately after the instrument starts printing. If you continue to hold the Feed/Mark key for more than 15 seconds, the instrument recognizes that the Feed/Mark key is shortcircuited and prints the system information “Error 05” at the end of printing.

+ +

2. Press the Power key while pressing the Feed/Mark and Auto/Manual keys together. Hold the Feed/Mark and Auto/Manual keys until the instrument begins to print the system test procedure, relationship between the input number and its corresponding key name on the operation panel and system test number list as shown below. The Test level 2 is called up and the instrument is in standby mode for entering the system test number.

To cancel printing the following information, press the Start/Stop key.

Printout

System Test Screen

Service Manual ECG-9620 4.3

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Entering the System Test

Number

Use the following keys on the operation panel to enter a 2-digit number for executing the desired system test. The specified system test numbers are indicated in the [xx] bracket at the right of each system test item on the printout output when the Test level 1 or 2 is called up. Refer to the “Calling up the Test Level X” section.

To delete the entered number, press the Auto/Manual key. To delete a 2-digit number, press the Auto/Manual key twice. At this time, the ones digit number is deleted before the tens digit number is deleted.

Numeric

0

3

4

1

2

Key

Copy/CAL key

F1 function key

F2 function key

F3 function key

Mode key

Clear Auto/Manual key

Numeric

5

8

9

6

7

Rhythm key

Key

Age key

Sex key

Feed/Mark key

Filter key

Enter Start/Stop key

4.4

Service Manual ECG-9620

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Executing the System Test

Press the Start/Stop key. For some tests, the System Test screen is displayed during the test as shown below,

System Test Screen

Service Manual ECG-9620

If you entered an unspecified number, 8 repeating “pips” alarm sound and the

“Invalid number. Please re-enter number” error message is displayed as shown below.

70

To re-enter the system test number, do either of the following:

• Delete the previously entered number by pressing the Auto/Manual key.

• Enter the system test number by overwriting the previously entered number.

4.5

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Quitting the System Test

The procedures to quit each system test vary from test to test. Some tests automatically end after an alarm sound is generated or a printout is output. Refer to the following explanations for each test. After quitting each test, the instrument returns to the standby mode for entering the system test number.

After a system test is completed, you can execute other system test without exiting the System Test mode.

Exiting the System Test

Mode

After all desired system tests are finished, press the Power key.

4.6

Service Manual ECG-9620

Demonstration

4. SYSTEM TEST, ADJUSTMENT AND SETTING

This is used to learn or demonstrate instrument operation.

While executing this test item, the instrument generates dummy 12 lead ECG resting waveforms until the power of the instrument is turned off. The ECG waveforms can be recorded and also displayed as shown below.

Procedure

Enter the system test number [00] (Test level 1) and press the Start/Stop key.

To quit the test, turn the power of the instrument off by pressing the Power key.

Dummy 12 lead ECG resting waveforms on LCD

Service Manual ECG-9620 4.7

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Recorder

This is used to check the condition of the recorder by printing test patterns. The recording test patterns consist of the following and are printed in the following order:

1. Diagonal lines

2. Characters H and X (Test level 1 only)

3. Paper speed scales (25 and 50 mm/s)

The recorder test of Test level 1 contains the same recorder test and thermal head test as Test level 2. With regard to the check procedure for characters H and X, refer to the “Thermal Head” section.

Procedure

Enter the system test number [01] (Test level 1) or [00] (Test level 2) and press the

Start/Stop key. The following test patterns are printed.

This test automatically ends after the following has been printed. The instrument returns to the standby mode for entering the system test number.

Printout of Test level 1

Not printed in Test level 2. Refer to the

“Thermal Head” section for this check.

4.8

Service Manual ECG-9620

Service Manual ECG-9620

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Check Procedure for Diagonal Lines

Check that all the diagonal lines are evenly and completely printed.

Possible Source of Problem

A dirty thermal head can cause some parts to be unevenly or incompletely printed.

A faulty thermal head can cause some parts at a certain position to be unevenly or incompletely printed.

Corrective Action

1. Clean the thermal head with the thermal head cleaner pen.

2. If this does not fix the problem, replace the thermal head.

1. Clean the thermal head with the thermal head cleaner pen.

2. If this does not fix the problem, replace the thermal head.

Check Procedure for Paper Speed Scales

Check that the accuracy of each paper speed during actual recording is within 2%.

The scales for 4 seconds at 10 mm/s and 12.5 mm/s paper speeds and the scales for

2 seconds at 25 mm/s and 50 mm/s paper speeds are consecutively printed. For example, the length for 4 seconds on the time scale printed at 10 mm/s paper speed must be within 39.2 mm to 40.8 mm.

Possible Source of Problem

Badly positioned thermal head.

Damaged, deformed or badly positioned motor gear.

Dirty motor rotation sensor.

Loose or damaged axle.

Faulty motor.

Faulty ECG control board.

Corrective Action

1. Adjust the thermal head position.

2. If this does not fix the problem, replace the thermal head.

1. Check the motor gear and its position.

2. If this does not fix the problem, replace the motor gear.

Clean the motor rotation sensor as described in the “Maintenance” section.

Tighten and check the axle as described in the “Disassembly and Assembly” section.

Replace the motor.

Replace the ECG control board.

4.9

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Thermal Head

This is used to check the condition of the thermal head by printing out the characters “H” and “X” continually.

Procedure

Enter the system test number [01] (Test level 2) and press the Start/Stop key. The characters “H” and “X” are printed as follows.

To quit the test, press the Auto/Manual key and the instrument returns to the standby mode for entering the system test number.

Printout of Thermal Head Test Result

4.10

Check Procedure for Characters H and X

Check that all the parts of the characters “H” and “X” are clearly, evenly and completely printed and that the characters are not printed zigzag or diagonally.

Possible Source of Problem

The thermal head recording resolution is not set correctly.

Faulty cable connection.

Faulty power board.

The thermal head unit position is not correct.

Corrective Action

Adjust the thermal head recording resolution as described in this section.

Check the following cable connection.

CNA014: between the ECG control board and power board

CNA012: CNJ033 connector on the

ECG control board.

Replace the power board.

Check and adjust the thermal head unit position.

Service Manual ECG-9620

Key

4. SYSTEM TEST, ADJUSTMENT AND SETTING

This is used to check the condition of the keys on the operation panel.

Procedure

1.

Enter the system test number [02] (Test level 1) or [03] (Test level 2) and press the Start/Stop key.

2.

Press the key on the operation panel. The name of the pressed key is printed if the key is functioning correctly.

To quit the test, press the Auto/Manual key. The instrument returns to the standby mode for entering the system test number.

NOTE

The Power and Auto/Manual keys cannot be checked by this test. To check if these two keys are functioning correctly, do the following:

•••••

Power key

Check that the power of the instrument is on or off when the

Power key is turned on or off.

•••••

Auto/Manual key

Check that the Key test is stopped by pressing the Auto/Manual key.

Check Procedure for Operation Panel Key

Check that the name of the pressed key is printed.

Possible Source of Problem

Faulty key board.

Corrective Action

Replace the key board.

Service Manual ECG-9620 4.11

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Memory

This is used to check the condition of the memory by comparing the data of the test patterns written to and read from each memory area.

The instrument provides two memory test modes: single and continuous. When single memory test mode is selected, entire memory is tested once. When continuous memory test mode is selected, the memory is continuously tested until the Auto/Manual key is pressed. The number of “Count of test” increases by one each time the entire memory test is tested. One complete memory test takes about

30 seconds.

• Single: [03] Test level 1, [04] Test level 1

• Continuous: [05] Test level 2

If no fault is detected, an “OK” message appears for each memory. If a fault is detected, an “Error” message appears and the number of “Error count” for each memory increases by one.

Printout of Memory Test Result

4.12

Service Manual ECG-9620

Single Memory Test Mode

4. SYSTEM TEST, ADJUSTMENT AND SETTING

This mode tests the entire memory once. You can use this mode to fully check all memory if a memory problem frequently occurs.

Procedure

Enter the system test number [03] (Test level 1) or [04] (Test level 2) and press the

Start/Stop key.

After the test, the test result is automatically printed. When the test result is completely printed, a “bing bong” alarm sound is generated and instrument returns to the standby mode for entering the system test number.

To cancel the test or cancel printing the test result, press the Auto/Manual key.

Check Procedure for Single Memory Test Mode

Check that no “Error” messages appear.

Possible Source of Problem

Faulty memory on the ECG control board.

Corrective Action

Replace the ECG control board. Each memory mounted on the ECG control board cannot be replaced at memory component level.

Continuous Memory Test

Mode

This mode continues testing the entire memory until the Auto/Manual key is pressed. You can use this mode to check an intermittent memory problem.

Procedure

Enter the system test number [05] (Test level 2) and press the Start/Stop key.

To print the test result without quitting the test, press the Start/Stop key. All results of the tests performed until the Start/Stop key are pressed is printed on one page.

To cancel the test, press the Auto/Manual key. All results of the tests performed until the Start/Stop key is pressed are printed on one page. When the test result is completely printed, 8 repeating “pips” alarm sound is generated and the instrument returns to the standby mode for entering the system test number.

Check Procedure for Continuous Memory Test Mode

Check that no “Error” messages appear.

Possible Source of Problem

Faulty memory on the ECG control board.

Corrective Action

Replace the ECG control board. Each memory mounted on the ECG control board cannot be replaced at memory component level.

Service Manual ECG-9620 4.13

4. SYSTEM TEST, ADJUSTMENT AND SETTING

LCD/LED

This is used to check all LEDs on the operation panel, LED/LCD control circuit and all dots on the LCD First, the LCD test starts and after the LCD test is complete, the LED test starts.

LCD Test

The LCD displays the following four types of test patterns every two seconds in the following order:

1. Diagonal lines are displayed.

2. Entire LCD lights up.

3. Returns to the System Test screen.

The LCD image for each pattern changes as follow:

1 2

4.14

LED Test

The LEDs on the operation panel light up one by one and remain lit until all LEDs light up. After all LEDs light up, they go out one at a time.

NOTE

With regard to the LEDs of Battery charge lamp, AC power lamp and

POWER lamp, check if they are in the following condition during the

LED/LCD test:

• Battery charge lamp: Not lit (This lamp indicates the remaining battery power before and after the LED test

• AC power lamp:

• POWER lamp: during battery operation.)

Lit

Lit when AC power is used

Procedure

Enter the system test number [04] (Test level 1) or [06] (Test level 2) and press the

Start/Stop key.

After the test, the instrument returns to the standby mode for entering the system test number.

To cancel the test, press the Auto/Manual key.

Service Manual ECG-9620

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Check Procedure for LCD Test

Check that all the dots on the screen light up and go out according to the test pattern.

Possible Source of Problem

Faulty cable connection.

Faulty LCD unit.

Faulty ECG control board.

Faulty key board.

Corrective Action

Check the following cable connection.

CNA013: between the ECG control board and key board.

LCD cable: CNJ201 connector on the key board.

Replace the LCD unit.

Replace the ECG control board.

Replace the key board.

Check Procedure for LED Test

Check that all the LEDs on the operation panel light up.

Possible Source of Problem

Faulty cable connection.

Faulty key board.

Faulty ECG control board.

Corrective Action

Check the following cable connection.

CNA013: between the ECG control board and key board.

Replace the key board.

Replace the ECG control board.

Service Manual ECG-9620 4.15

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Input Unit

This is used to check if the input analog signal processing circuit detects the lead off condition correctly, using the provided input check jig. If each lead is connected when the input analog signal processing circuit works correctly, the

“Normal” message is printed at the right of each electrode lead name in the test result. If a lead is not connected, the “Error” message is printed.

The following is an example printout of the input unit test result when the R(RA) lead is disconnected.

Input check jig

4.16

Procedure

1. Connect the electrode lead to the instrument.

2. Attach all tips of each electrode lead to the input check jig.

3. Enter the system test number [05] (Test level 1) or [07] (Test level 2).

4. Disconnect one of the leads from the check jig and press the Start/Stop key.

The disconnected lead name is printed out.

5. Repeat steps 3 and 4 for all leads by one.

To quit the test, press the Auto/Manual key. The instrument returns to the stanby mode for entering the system test number.

Check Procedure for Input Unit Test

Check that the lead off condition is detected correctly.

Possible Source of Problem

Faulty cable connection.

Faulty key board.

Faulty ECG control board.

Corrective Action

Check the following cable connection.

CNA013: between the ECG control board and key board.

Replace the key board.

Replace the ECG control board.

Service Manual ECG-9620

Calibration

4. SYSTEM TEST, ADJUSTMENT AND SETTING

This is used to check the sensitivity and time constant of the input analog signal processing circuit. After starting the test, the CAL waveforms for leads I, II and V1 to V6 are printed as shown below. If all the rectangular printed CAL waveforms have the amplitude of 1 mV and time constant of more than 3.2 seconds, the sensitivity and time constant of the input analog signal processing circuit are normal.

Service Manual ECG-9620

Procedure

Enter the system test number [06] (Test level 1) or [08] (Test level 2) and press the

Start/Stop key.

After all CAL waveforms for eight leads are printed, the test automatically ends and the instrument returns to the standby mode for entering the system test number.

To cancel the test, press the Start/Stop key or Auto/Manual key. The instrument returns to the standby mode for entering the system test number.

Check Procedure for Calibration Waveforms

Check that all the rectangular printed CAL waveforms match the following conditions in the illustration below:

•

Amplitude when CAL waveform is risen:

•

Amplitude of point which is 25 mm : from the rising point of the CAL waveform

10 mm

±

2% more than 7.3 mm

10 mm ±2% more than 7.3 mm

25 mm

Possible Source of Problem

Faulty ECG control board.

Corrective Action

Replace the ECG control board.

4.17

Chp

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Communication

This is used to check the external communication input/output line of the instrument, using the check jig. The instrument has one standard communication connector (SIO). This test is performed by comparing the original test patterns sent from the output line with the test patterns received at the input line. If any received test pattern is different from its original, a “Error” message is printed. A “Normal” message is printed if the communication line is normal. With regard to TxD-RxD line, if the same data is printed, the line is normal.

Every time the test of one set is repeated, the number of “Count of test” increases by one. Every time the error is detected during continuous test, the “Error count” increases by one. The test of one set takes about 5 seconds.

The following is an example printout of the communication test result.

4.18

Preparation

A locally made check jig is required for the test. To make the check jig, shortcircuit the pins as shown below.

Connector Pin Assignment

1.

FG

2.

TXD

3.

RXD

4.

RTS

5.

CTS

6.

DSR

7.

GND

8.

HS

9.

DTR

Mating Connector

Connector: HDEB-9PF (05)

Case: HDE-CTH

Service Manual ECG-9620

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Procedure

1. Connect the check jig to the SIO socket of the instrument.

2. Enter the system test number [07] (Test level 1) or [09] (Test level 2) and press the Start/Stop key.

The instrument prints the test result of each test if the instrument detects an

“Error”.

To print the test result without quitting the test, press the Start/Stop key. The results of all tests performed until the Start/Stop key are pressed are printed.

You can see the test number and the number of errors on “Count of test” and

“Error count” on the printout, respectively.

To quit the test, press the Auto/Manual key. The instrument prints the results of all tests performed until the Auto/Manual key is pressed. When the test result is completely printed, 8 repeating “pips” sound is generated and the instrument returns to the standby mode for entering the system test number.

Check Procedure for Serial Communication

Check that no error messages appear.

Possible Source of Problem

Faulty ECG control board.

Corrective Action

Replace the ECG control board.

Service Manual ECG-9620 4.19

4. SYSTEM TEST, ADJUSTMENT AND SETTING

CRO/EXT1

This is used to check the external output/input terminal, using the check jig. The instrument has the input signal terminal (EXT-IN connector) and output signal terminal (CRO-OUT connector) at the rear of the instrument.

In this test, the instrument prints the known triangular waveform signals generated inside the instrument at the lower trace on the recording paper the moment the instrument outputs the signals from the CRO-OUT terminal to the EXT-IN connector. At the same time, the instrument prints the triangular waveform signals input to the EXT-IN connector at the upper trace on the recording paper. There is no delay time between the printed waveforms on the upper and lower traces.

The following is an example printout of the CRO/EXT1 test result.

4.20

Preparation

A locally made check jig is required for the test. To make the check jig, use the two 3.5

φ

monaural jacks and leads and solder the signal line and ground line of the two jacks with leads as shown below.

Signal line

Ground line

Service Manual ECG-9620

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Procedure

1. Connect the check jig to the CRO-OUT/EXT-IN sockets of the instrument.

2. Enter the system test number [08] (Test level 1) or [10] (Test level 2) and press the Start/Stop key.

To quit the test, press the Start/Stop key or Auto/Manual key. The instrument returns to the standby mode for entering the system test number.

Check Procedure

Check that the shape of the two printed triangular waveforms are the same and there is no delay time between them.

Possible Source of Problem

Faulty ECG control board.

Corrective Action

Replace the ECG control board.

Service Manual ECG-9620 4.21

4. SYSTEM TEST, ADJUSTMENT AND SETTING

System Setup Initialization

This is used to reset all the system settings to the factory initial settings.

NOTE

The following settings are not reset to the factory initial settings even if the instrument is initialized.

• date and time* • display language**

• recording resolution setting* • hospital name**

• cue mark position*

• elapsed time

• direct/modem connection**

• local language font

• saved ECG data

For settings marked with *, refer to the following corresponding subsection in this section; for settings marked with **, refer to

“Changing Settings Before Measurement (System Setup Screen)” in the operator’s manual.

Procedure

Enter the system test number [10] (Test level 1) or [12] (Test level 2) and press the

Start/Stop key.

If the initialization is completed, a “System Setup Initialization” message appears with one “bing bong” alarm sound and the instrument returns to the stanby mode for entering the system test number.

Refer to the operator’s manual for the factory initial settings.

Following is the LCD display after the system has been initialized.

4.22

Service Manual ECG-9620

4. SYSTEM TEST, ADJUSTMENT AND SETTING

ECG Findings List Recording

This is used to print out the list of all ECG findings used for the instrument. The instrument informs you of the ECG finding as a result of the ECG interpretation when analyzing the ECG.

Procedure

Enter the system test number [11] (Test level 1) and press the Start/Stop key.

When the list is completely printed, one “bing bong” alarm sound is generated and the instrument returns to the standby mode for entering the system test number.

To cancel printing the list, press the Start/Stop key or Auto/Manual key. The instrument returns to the standby mode for entering the system test number.

Service Manual ECG-9620 4.23

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Recording Resolution Setting

This is used to adjust the thermal head recording resolution after the thermal head is replaced with a new one or when the printout is not clearly, evenly and completely printed.

Normally, the resistor value of the heating element on the thermal head is a specific value which varies from thermal head to thermal head. Even if the same energy is applied to the thermal head, the recording quality varies due to the difference of the thermal head resistor value. Therefore, adjusting the thermal head recording resolution is required to evenly print regardless of the thermal head resistor value.

Do the following procedure to automatically adjust the thermal head recording resolution.

Procedure

1.

Call up the System Test Level 2.

heating element

Label:

Lot No., thermal head resistance

2.

Enter the system test number between [41] and [48] according to the thermal head resistance value

Thermal head resistance

1265 to 1181

1180 to 1131

1130 to 986

985 to 976

975 to 966

965 to 956

955 to 946

945 to 935

Current setting

System set No.

Recording resolution setting1 [41]

Recording resolution setting2 [42]

Recording resolution setting3 [43]

Recording resolution setting4 [44]

Recording resolution setting5 [45]

Recording resolution setting6 [46]

Recording resolution setting7 [47]

Recording resolution setting8 [48]

Recording resolution setting [49]

3.

Press the Start/Stop key.

4.

Turn the power off. (Test level 2) and press the Start/Stop key.

4.24

Service Manual ECG-9620

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Date and Time Setting

The date and time of the instrument are set in the System Setup mode. In the

System Setup mode, you can also set the entire system settings of the instrument which determines the operation conditions of the instrument. Refer to the operator’s manual for details.

The date and time is backed up with the lithium battery in a real time clock IC on the ECG control board. The life time of the lithium battery is about 7 years. When the “Error 09” error message appears and the date is reset to January 1, 1980, the lithium battery is completely discharged. Replace the ECG control board and set the date and time.

Setting the Date and Time

1. Call up the System Setup mode

1) If the power is on, turn it off.

NOTE

Release the Feed/Mark key immediately after the instrument starts printing. If you continue to hold the Feed/Mark key for more than 15 seconds, the instrument recognizes that the Feed/Mark key is shortcircuited and prints the system information “Error 05” at the end of printing.

2) Press the Power key while pressing the Copy/CAL key. Hold the Copy/

CAL key until the instrument begins to print the list of the system setup settings. The System Setup mode is called up.

To cancel printing the list, press the Start/Stop key.

2. Enter a 3-digit number to call up the stanby mode for entering the new numbers for year, month/date, hour/minute or second, respectively. Refer to the

“Entering the System Test Number” in this section for entering the numbers.

Following is the LCD screen when the year setting mode is called up.

Service Manual ECG-9620 4.25

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Year

Enter the system setup number [318].

Month/date

Enter the system setup number [319].

Hour/minute

Enter the system setup number [320].

Second

Enter the system setup number [322].

To cancel the entered number, press the Auto/Manual key.

NOTE

You cannot enter numbers for “second” setting.

3. Enter a 4-digit number to enter the new numbers of the year, month/date or hour/minute. The range of the number which is possible to enter is as follows:

Year

[1980] to [2079]

Month/date

[0101] to [1231]

Hour/minute

[0000] to [2359]

To cancel the entered number, press the Auto/Manual key.

Following is the LCD screen when the year “1998” is entered.

4.26

Service Manual ECG-9620

4. SYSTEM TEST, ADJUSTMENT AND SETTING

NOTE

•

If the Start/Stop key is pressed in the “second” setting mode, the second is reset to “00” seconds and the instrument starts working from “00” seconds.

•

If the power of the instrument is turned off before the Start/Stop key is pressed, the newly entered numbers are invalid.

4. Press the Start/Stop key to save the new numbers. The newly entered numbers are automatically printed.

Following is the LCD screen when the year “1998” is saved.

Service Manual ECG-9620

If you entered an unspecified number, 8 repeating “pips” alarm sound and the

“Invalid number. Please re-enter number” error message is displayed.

To re-enter the system test number, do either of the following:

• Delete the previously entered number by pressing the Auto/Manual key.

• Enter the system test number by overwriting the previously entered number.

5. Repeat steps 2 to 4 to enter the new numbers for the other settings.

6. Turn the power of the instrument off to exit the System Setup mode.

4.27

Section 5 Board/Unit Description

Block Diagram …………………………………………………………………………………………………….. 5.1

Power Unit …………………………………………………………………………………………………………. 5.2

ECG Control Board ……………………………………………………………………………………………… 5.2

Service Manual ECG-9620 5C.1

5. BOARD/UNIT DESCRIPTION

Block Diagram

Buzzer

Motor

Motor sensor

Paper sensor

Thermal head

CNA011

CNA012

CNJ101 (34 pin)

Key board

CNJ201 (12 pin)

CNA013

CNJ021 (80 pin)

CNJ032 (2 pin)

CNJ031 (9 pin)

SIO connector

CNJ043

(miniature plug)

External input connector

CNJ036 (10 pin)

CNJ041

(miniature plug)

CRO output connector

CNJ011 (16 pin)

CNJ033 (24 pin)

ECG control board

LCD

Patient cable connector

CNJ091 (D-sub 15 pin)

Battery

(SB-901D)

CNJ035 (30 pin)

CNA014

CNJ201 (30 pin)

Power board

CNJ102 (3 pin)

CNJ101

(2 pin)

Power transformer unit

AC socket

Service Manual ECG-9620 5.1

5. BOARD/UNIT DESCRIPTION

Power Unit

The Power unit consists of the power source, battery charging and control circuits.

The Power unit uses the switching regulation method to produce the power required for the instrument.

• +5 V for digital circuits

• +12 V for analog circuits

• +24 to 30 V for thermal head

ECG Control Board

The ECG Control board consists of the following components:

Component Description

CPU:

ROM:

MC68EC020 (Operating frequency: 25 MHz)

For system software, 2 MB

DRAM: Main memory, 4 MB

Flash memory: 16 MB

Real time clock: with 140 B SRAM and back-up battery (lithium battery)

Timer: 1 ms timer

Interrupt request signal ON/OFF: selectable

Operation mode: fixed

Serial interface: Equivelent to RS-232C, 1 channel

Baud rate: 2,400 to 115,200 bps selectable

Speaker circuit: Beep sound, Sound by noise generator

Interrupt request: Auto-vector method

Interface:

Recorder:

To ECG input section

LCD:

Controller:

A/D converter:

For keyboard

5.2

Service Manual ECG-9620

Section 6 Disassembly

Before You Begin …………………………………………………………………………………………………. 6.1

Warnings and Cautions ………………………………………………………………………………. 6.1

Required Tools …………………………………………………………………………………………… 6.1

Cable Connection ……………………………………………………………………………………………….. 6.2

Removing the Upper Casing …………………………………………………………………………………. 6.4

Removing the Magazine and Recording Paper ………………………………………………. 6.4

Removing the Battery Pack …………………………………………………………………………. 6.4

Removing the Upper Casing ………………………………………………………………………… 6.4

Removing the Thermal Head and Motor Assy …………………………………………………………. 6.5

Removing the Thermal Head ……………………………………………………………………….. 6.5

Removing the Motor Assy ……………………………………………………………………………. 6.6

Removing the ECG Control Board …………………………………………………………………………. 6.6

Removing the Power Board ………………………………………………………………………………….. 6.8

Removing the Power Board …………………………………………………………………………. 6.8

Replacing the Power Fuse and Battery Fuse …………………………………………………. 6.9

Removing the Key Board and LCD Unit ………………………………………………………………… 6.10

Service Manual ECG-9620 6C.1

6. DISASSEMBLY

The procedures in this section tell how to remove, replace and install major components in the instrument.

Before You Begin

Removing, replacing and installing major components should be done by qualified service personnel.

Warnings and Cautions

WARNINGS

• To avoid the possibility of injury to yourself or damage to the instrument, do not install or remove any component or change switch settings while the power is on. Turn the power off and wait 10 minutes before installing to or removing any component from the instrument.

• To avoid accidental discharge of static electricity which could damage the instrument components, use a wrist ground strap when installing or removing any component of the instrument.

Required Tools

Service Manual ECG-9620

CAUTIONS

• Before connecting or disconnecting any cables, turn off the instrument, unplug the AC power cord from the instrument and remove the battery pack.

• Fuses cut off the power when an abnormality occurs in the instrument. Eliminate the malfunction before replacing the fuse. Use the correct fuse only. The fuse rating is shown on the holder.

• Removal and replacement of any component in the instrument should be done by qualified service personnel.

• Use only parts recommended by Nihon Kohden to assure maximum performance from your instrument.

• Anti-static bench mat

• Wrist ground strap

• Phillips screwdriver (insulated type)

• Flat-blade screwdriver (insulated type)

• Hex (Allen) wrench or hex keys

• Hex driver

• Tweezers

6.1

6. DISASSEMBLY

Cable Connection

Buzzer

Motor

Motor sensor

Paper sensor

CNA011

CNJ021 (80 pin)

CNJ032 (2 pin)

CNJ031 (9 pin)

SIO connector

CNJ043

(miniature plug)

External input connector

CNJ036 (10 pin)

CNJ041

(miniature plug)

CRO output connector

CNA012

Thermal head

CNJ011 (16 pin)

CNJ101 (34 pin)

Key board

CNJ201 (12 pin)

CNA013

CNJ033 (24 pin)

ECG control board

LCD

Patient cable connector

CNJ091 (D-sub 15 pin)

Battery

(SB-901D)

CNJ035 (30 pin)

CNA014

CNJ201 (30 pin)

Power board

CNJ102 (3 pin)

CNJ101

(2 pin)

Power transformer unit

AC socket

6.2

Service Manual ECG-9620

6. DISASSEMBLY

No.

CNA011

CNA012

CNA013

CNA014

Code No.

Description

08SK3.670.00216A

ZHR-10 L=120, 90, 130 between motor assy and ECG control board

08SK3.670.00181B

PHR-16 L=80, between thermal head and ECG control board

08SK3.670.00172A

PHDR-24VS (W=100), between key board and ECG control board

08SK3.670.00199B

SHDR-30V-S-B (W=60), between power board and ECG control board

CNA011 cable

CNA012 cable

CNA014 cable

Service Manual ECG-9620

CNA013 cable

6.3

6. DISASSEMBLY

Removing the Upper Casing

Removing the Magazine and Recording Paper

1.

Press down the magazine release button to open the magazine.

2.

Remove magazine and recording paper into the magazine.

Removing the Battery Pack

1.

Remove the two M3 binding head screws from the battery cover.

2.

Open the battery cover by sliding it up as shown in the figure.

3.

Disconnect the battery cable from the battery pack connector..

4.

Remove the battery pack from the battery compartment.

Removing the Upper

Casing

1.

Remove the five M3 binding head screws.

6.4

2.

Open the upper casing in the direction of the arrow.

Service Manual ECG-9620

6. DISASSEMBLY

Removing the Thermal Head and Motor Assy

Removing the Thermal

Head

1.

Remove the battery pack and upper casing from the lower casing. Refer to

“Removing the Upper Casing” .

2.

Remove the two M3 pan screws with washers and spring washers which fasten the ground leads to the power transformer unit.

Ground lead

M3 binding head screw

M3 pan screw with washers and spring washer

Thermal head unit

CNA012 cable

CNA011 cable

Thermal head

3.

Disconnect the CNA011 and CNA012 cables from the ECG control board.

4.

Remove the three M3 binding head screws which fasten the thermal head unit to the lower casing and remove the thermal head unit.

5.

Remove the two M3 binding head screws washers which fasten the thermal head to the thermal head unit.

6.

Remove the thermal head.

7.

Remove the thermal head cable from the thermal head.

Service Manual ECG-9620 6.5

6. DISASSEMBLY

Removing the Motor Assy

1.

Remove the thermal head unit from the lower casing. Refer to step 1 to 5 in

“Removing the Thermal Head Unit”

2.

Remove the two M3 binding head screws which fasten the motor assy to the thermal head unit and remove the motor assy.

3.

Remove the two M3 pan screws with spring washers which fasten the motor sensor board to the motor assy and remove the motor sensor board.

Motor assy

Motor sensor board

6.6

Service Manual ECG-9620

6. DISASSEMBLY

Removing the ECG Control Board

1.

Remove the battery pack and upper casing from the lower casing. Refer to

“Removing the Upper Casing” .

2.

Disconnect the CNA011, CNA012, CNA013, CNA014 and speaker cables from the ECG control board.

CNA011 cable

CNA012 cable

CNA013 cable

CNA014 cable

Speaker cable

ECG control board

3.

Remove the six M3 pan screws with washers which fasten the ECG control board to the lower casing and remove the ECG control board.

Service Manual ECG-9620 6.7

6. DISASSEMBLY

Removing the Power Board

Removing the Power Board

1.

Remove the battery pack and upper casing from the lower casing. Refer to

“Removing the Upper Casing” .

2.

Remove the ECG control board. Refer to “Removing the ECG Control Board”.

3.

Remove the two M3 pan screws with washers and four M3 spacer bolts which fasten the shield plate to the lower casing and remove the shield plate.

M3 pan screw with spring washer

M3 spacer bolt

Power board

Shield plate

Power cable

6.8

4.

Remove the M3 pan screw with washer which fastens the Power board to the lower casing and remove the power unit.

5.

Disconnect the power cable from the power board.

Service Manual ECG-9620

Replacing the Power Fuse and Battery Fuse

6. DISASSEMBLY

1.

Remove the power board from the lower casing. Refer to “Removing the

Power Board”.

2.

Turn the power board over.

3.

Replace the battery fuses with a new one.

4.

Replace the power fuse with a new one.

Power fuse

Service Manual ECG-9620

Battery fuse

Power fuse

ECG-9620L/M/N/P:

ECG-9620S/T/U:

Battery fuse

F101:

F102:

Code No.

Description

274035 218.250 (0.25 A)

104665 218.500 (0.5 A)

Code No.

Description

540657

323241

239.001 (1 A)

218.008 (8 A)

6.9

6. DISASSEMBLY

Removing the Key Board and LCD Unit

1.

Remove the battery pack and upper casing from the lower casing. Refer to

“Removing the Upper Casing”.

M3 pan screws with spring washer and washer

LCD ground spring

LCD ground plate

LCD cable

LCD unit

6.10

CNA013 cable

Key board

2.

Disconnect the CNA013 cable from the key board.

3.

Disconnect the LCD cable from the key board.

4.

Remove the six M3 pan screws with spring washers and washers which fasten the LCD unit to the upper casing and remove the LCD unit, two LCD ground spring and two LCD ground plates.

5.

Remove the four M3 pan screws with spring washers and washers which fasten the key board to the upper casing and remove the key board.

Service Manual ECG-9620

Section 7 Replaceable Parts List

Instrument ………………………………………………………………………………………………………….. 7.2

Service Manual ECG-9620 7C.1

7. REPLACEABLE PARTS LIST

When ordering parts or accessories from your nearest Nihon Kohden Corporation distributor, please quote the NK code number and part name which are 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 Nihon

Kohden parts and accessories to assure maximum performance from your instrument.

Service Manual ECG-9620 7.1

7. REPLACEABLE PARTS LIST

Instrument

501

502

503

504

401

402

403

404

A

B

C

D

306

307

308

309

302

303

304

305

310

311

Index Code No.

101

Qty

08SK8.074.00075 1

102

103

104

105

106

08SK8.081.00316 1

08SK8.080.00086 1

08SK2.929.00047 1

08SK8.048.00032 2

08SK8.038.00088 2

Description

ECG-9620 Upper casing

Operation panel

LCD filter

LCD unit, MH604WBE11

LCD ground spring

LCD ground plate

08SK8.223.00066 2

08SK8.038.00088 1

08SK3.878.00046 1

08SK8.300.00099 1

08SK8.387.00031 2

08SK8.387.00218 1

107029

6112-017015

1

1

RHC-00041

RHC-00042

1

1

Head collar bearing

Thermal head bracket

Thermal head, KYT-56-8MPP1-SKH

Thermal head shaft

Thermal head spring

Paper sensor board ground plate

E ring

Thermal head unit base

Motor assy

Magazine assy

08SK8.615.00089 4

08SK7.061.00082 1

08SK8.610.00031 1

6124-00993

08SK5.846.00014 1

08SK6.116.00025 1

08SK8.080.00095 1

624914

UTC-0006

UTC-0007

UTC-0008

2

4

RKC-0001 (220) 1

RKC-0002 (230) 1

RKC-0003 (240) 1

RKC-0004 (110) 1

RKC-0002 (120) 1

RKC-0002 (127) 1

1

1

1

Spacer bolt

Heat sink seat

Shield plate

Protective ground label

Speaker

ECG-9620 lower casing

Battery cover

Rubber foot

Key board

ECG control board

Power board

Transfer Assy (220 V) for L and P version

Transfer Assy (230 V) for M version

Transfer Assy (240 V) for N version

Transfer Assy (110 V) for S version

Transfer Assy (120 V) for T version

Transfer Assy (127 V) for U version

7.2

Service Manual ECG-9620

7. REPLACEABLE PARTS LIST

102

311

101

305

309

B

301

302

303

307

308

306

402

312

404

401

A

403

106

103

104

C

310

501

404

D

502

503

504

Service Manual ECG-9620

105

7.3

Section 8 Connector Pin

Assignment

Connector Pin Assignment …………………………………………………………………………………… 8.1

Attaching the Ferrite Core ……………………………………………………………………………. 8.1

EXT-IN Connector ………………………………………………………………………………………. 8.2

CRO-OUT Connector …………………………………………………………………………………. 8.2

SIO Connector …………………………………………………………………………………………… 8.2

Service Manual ECG-9620 8C.1

8. CONNECTOR PIN ASSIGNMENT

Connector Pin Assignment

CAUTION

• When connecting an external instrument to connectors marked with

, the external instrument and this cardiograph must be connected according to the IEC60601-1-1 “Medical electrical equipment — Part 1-

1: General requirements for safety — Collateral standard: Safety requirements for medical electrical systems”. Failure to follow this warning may cause electrical shock to the patient and operator.

• When the cardiograph operates on battery power and large leakage current is input from the connected external instrument, ground the cardiograph or use an isolation transformer for the external instrument. Failure to follow this caution may cause electrical shock to patient and operator.

Attaching the Ferrite Core

NOTE

When connecting an external instrument to the following connecters, an unwanted radio frequency signal is generated from this connection. To reduce this unwanted radiofrequency signal, attach the optional ferrite core to the cable of the external instrument.

Example of Wrapping

Connector

EXT-IN

CRO-OUT

SIO

Ferrite core model

RI-14-28-6

RI-14-28-6

SEC-8

Code No.

493182

493182

361814

Wrap the cable once around the ferrite core.

Wrap the cable once around the ferrite core.

—

NOTE

Attach and fix the ferrite core near the connector of the cable that connects to the cardiograph.

Service Manual ECG-9620 8.1

8. CONNECTOR PIN ASSIGNMENT

EXT-IN Connector

1

Unit side: SG-8036 (Code No.: 273446)

Cable side: P-112D 3.5mm ϕ miniature plug (Code No.: 606907)

Pin No. Signal

1 EXT-IN 1

2 GND

Input sensitivity: 10 mm/0.5 V, input impedance 100 k

Ω

or more

2

CRO-OUT Connector

1

2

CAUTION

Do not use the output signal from the output connector for a synchronization signal such as the synchronized cardioversion signal. There is a time delay between the input ECG signal and output signal.

Unit side: SG-8036 (Code No.: 273446)

Cable side: P-112D 3.5 mm ϕ miniature plug (Code No.: 606907)

Pin No. Signal

1

2

CRO-OUT

GND

Output sensitivity: 0.5 V/1 mV, output impedance 100

Ω

or less

SIO Connector

5

1

9

6

Unit side: JEY-9S-1A2B (Code No.: 390774)

Cable side: Connector, DE-9P (Code No.: 082625)

Cover, DE-C8-J9-F1-1 (Code No.: 336708)

Pin No. Signal

1 Shield

4

5

2

3

TxD

RxD

RTS

CTS

8

9

6

7

DSR

GND

DCD

DTR

Pin No.

Personal conputer

1

6

7

4

5

2

3

8 to 19

20

Shield

TxD

RxD

RTS

CTS

DSR

GND

Not used

DTR

21 to 25 Not used

Pin assignment may depend on the shape of connectors for PCs.

To connect a modem, use a dedicated cable 15 m or shorter.

8.2

Service Manual ECG-9620