Welch Allyn CP-100, CP-200 Service manual

CP 100 and CP 200™ 12-Lead
Resting Electrocardiograph

TM

CP 100TM 12- Lead Resting Electrocardiograph

CP 200

12- Lead Resting Electrocardiograph

Service Manual

ii Welch Allyn CP 100 and CP 200 Electrocardiograph

Copyright 2005, Welch Allyn, Inc. All rights are reserved. No one is permitted to reproduce or duplicate, in
any form, this manual or any part thereof without permission from Welch Allyn.

Caution: Federal US law restricts sale of the device identified in this manual to, or on the order of, a
licensed physician.

Welch Allyn assumes no responsibility for any injury, or for any illegal or improper use of the product, that
may result from failure to use this product in accordance with the instructions, cautions, warnings, or
indications for use published in this manual.

Welch Allyn is a registered trademark of Welch Allyn, Inc., and CP 200, CP100, and CardioPerfect are
trademarks of Welch Allyn, Inc.

SD is a trademark of Toshiba.

Software in this product is Copyright 2005, Welch Allyn, Inc., or its vendors. All rights are reserved. The
software is protected by United States of America copyright laws and international treaty provisions
applicable worldwide. Under such laws, the licensee is entitled to use the copy of the software
incorporated within this instrument as intended in the operation of the product in which it is embedded.
The software may not be copied, decompiled, reverse-engineered, disassembled or otherwise reduced to
human-perceivable form. This is not a sale of the software or any copy of the software; all right, title and
ownership of the software remains with Welch Allyn or its vendors.

For information about any Welch Allyn product, please call Welch Allyn Technical Support:

USA 1 800 535 6663

[phone]

Canada 1 800 561 8797 China [phone]

European Call Center [phone] France [phone]

Germany [phone] Japan [phone]

Latin America [phone] Netherlands [phone]

Singapore [phone] South Africa [phone]

United Kingdom [phone] Sweden [phone]

Australia [phone]

800 074 793

Part Number (manual only): 704340 Rev D

Welch Allyn
PO Box 220
Skaneateles Falls, NY 13153-0220

www.welchallyn.com

Printed in USA

0297

Contents

1 - Safety Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

iii

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Servicing the Electrocardiograph Safely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

General Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Electrostatic Discharge (ESD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

General Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 - Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Purpose and Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Service Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Non-Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Technical Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Returning Products. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Product Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Recommended Service Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Controls, Indicators, and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

“System Settings” Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

About the Main Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Moving Through the Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Reviewing the Device Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

CP 100 and CP 200 Electrocardiograph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Service Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Entering the Service Info Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Print Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Battery Life Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Printer Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Export Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Import Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Delete Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Lead Off Threshold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Service Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3 - Functional Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Functional Verification Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Full Functional Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

iv Contents Welch Allyn CP 100 and CP 200 Electrocardiograph

Operating/Non-Printing Mode Current Test . . . . . . . . . . . . . . . . . . . . . . . . . 30

Battery Accuracy Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Sleep/Standby Mode Current Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Charger Detect Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

LED Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

LCD Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Set Unit Initial Configuration/SD Slot Test . . . . . . . . . . . . . . . . . . . . . . . . . . 32

ECG Communication Test (ECG Input test and lead off) . . . . . . . . . . . . . . . 33

Spirometer Communication Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

USB Communications Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Beeper Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Keyboard Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Printer Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Dielectric Strength Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Hi-Pot Test Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Chassis, Earth and Patient Leakage Current Tests. . . . . . . . . . . . . . . . . . . . 39

Checklist and Test Results Report Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

4 - Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Problem-Solving Suggestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Service Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

5 - Disassembly and Repair Procedures . . . . . . . . . . . . . . . . . . . . . . . 47

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Torque Specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Opening the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Replacing the Printer Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Replacing the Paper Tray Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Replacing the Platen Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Replacing the Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Replacing the Stepper Motor and Gear Box. . . . . . . . . . . . . . . . . . . . . . . . . 57

Replacing the Battery or Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Replacing the Battery (DC) Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Replacing the Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Replacing the Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Replacing the IEC (AC input) Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Replacing the LCD Inverter and LCD Assembly (CP 200) . . . . . . . . . . . . . . 64

Replacing the Function Keypad Assembly (CP 200) . . . . . . . . . . . . . . . . . . . 65

Replacing the Keyboard Assembly (CP 200) . . . . . . . . . . . . . . . . . . . . . . . . 66

Replacing the LCD Assembly (CP 100) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Replacing the Keyboard Assembly (CP 100). . . . . . . . . . . . . . . . . . . . . . . . . 68

6 - Field Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Field Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Service Manual CP 100 and CP 200 Electrocardiograph v

A - Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

B - EMC Guidance and Manufacturer’s Declarations . . . . . . . . . . . . . 79

C - Software Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

D - Interconnect Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

CP 200 Interconnect Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

CP 100 Interconnect Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

vi Contents Welch Allyn CP 100 and CP 200 Electrocardiograph

1

1

Safety Summary

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Servicing the Electrocardiograph Safely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Safety Summary CP 100 and CP 200 Electrocardiograph

Introduction

The safety summary, and all additional specific warnings and cautions located throughout
the documentation, must be read and understood by all users of the CP 100 and CP 200
Electrocardiograph.

Symbols

The symbols illustrated on the following pages may appear on the electrocardiograph, the
packaging, the shipping container, or in this manual.

Documentation Symbols

WARNING Indicates conditions or practices that could lead to illness, injury, or
death.

Caution In the manual, indicates conditions or practices that could damage the
equipment or other property.

Caution On the product, means “Consult accompanying documentation.”

-20°C

EC REP

Shipping, Storing, and Environment Symbols

This end up Keep dry

Fragile Altitude limits

+49°C

Temperature limits Relative humidity limit

Certification Symbols

Meets essential requirements of European
Medical Device Directive 93/42/EEC

European Regulatory Manager
Welch Allyn LTD.
Navan Business Park
Dublin Road
Navan, County Meath, Republic of Ireland
Tel.: [phone]
Fax: [phone]

N344

Complies with applicable U.S. and Canadian
medical safety standards

Australian registered importer

Directions for Use Safety Summary 3

Operation Symbols

For details on the keys, see “Keyboard Functions” on page 14.

On/standby (off) Help

Navigation arrows Backspace

Enter Shift

Auto ECG Menu

Rhythm ECG Stop/Cancel

SD memory card slot Com port A

(for patient cable)

Alternating current Battery charge level

Dangerous voltage Direct current

Defibrulation-proof type CF applied parts

Ground equipotential
(while the electrocardiograph is safety-rated
“CF” for direct cardiac contact it is not
intended to be connected directly to the
patient’s heart; only surface contact with the
patient’s skin is intended).

Do not reuse. Sealed lead-acid battery

Type BF Defibrillator proof Recycle

Do not dispose of this product as unsorted
municipal waste. Prepare this product for
reuse or separate collection as specified by

T2.0A/250V

AC fuse replacement information

Directive 2002/96/EC of the European
Parliament and the Council of the European
Union on Waste Electronic and Electrical
Equipment (WEEE). If this product

is

contaminated, this directive does not apply.

For more specific disposal information, see
www.welchallyn.com/weee,
or contact Welch Allyn Customer Service at
[phone].

Additional Operation Symbols for CP 200

Spirometry Key OK

Spirometry port Com port B

(for USB cable)

4 Safety Summary CP 100 and CP 200 Electrocardiograph

Servicing the Electrocardiograph Safely

Before using or servicing the electrocardiograph, you must read and understand the
following safety-related information.

General Warnings

The following warning statements apply to electrocardiograph use in general. Warning
statements that apply specifically to particular procedures, such as connecting the patient
cable or performing an ECG test, appear in the corresponding sections of the manual.

Warning statements indicate conditions or practices that could lead to illness, injury, or
death.

Warnings Related to the Environment

WARNING To avoid a possible explosion, do not use the electrocardiograph in

the presence of flammable anesthetics.

WARNING When transporting the electrocardiograph on a cart, tuck the
patient cable away from the wheels so that it does not present a hazard.

WARNING Do not use the CP 100 and CP 200 Electrocardiograph in an MRI
suite or hyperbaric chamber.

WARNING Do not autoclave the CP 100 and CP 200 Electrocardiograph or
patient cable.

Warnings Related to Accessories and Other Equipment

WARNING For operator and patient safety, peripheral equipment and

accessories that can come in direct patient contact must be in compliance with
all appropriate safety, EMC, and regulatory requirements. See “EMC Guidance

and Manufacturer’s Declarations” on page 79

WARNING All signal input and output (I/O) connectors are intended for
connection of only devices complying with IEC 60601-1, or other IEC standards
(for example, IEC 60950), as appropriate to the device. Connecting additional
devices to the electrocardiograph may increase chassis or patient leakage
currents. To maintain operator and patient safety, consider the requirements of
IEC 60601-1-1. Measure the leakage currents to confirm that no electric shock
hazard exists.

WARNING The electrocardiograph has not been designed for use with high­frequency (HF) surgical equipment and does not protect against hazards to the
patient.

Directions for Use Safety Summary 5

Warnings Related to Using the Electrocardiograph

WARNING Avoid positioning any leads or cables so that they could easily trip

someone.

WARNING Satisfactory maintenance procedures must be implemented, or
equipment failure and health hazards may result.

Warnings Related to Repairing the Electrocardiograph

WARNING Only qualified service personnel should attempt to repair the

electrocardiograph. In case of a malfunction, call Technical Support and precisely
describe the problem. For phone numbers, see page ii.

WARNING While under warranty, the electrocardiograph must be serviced
only by a Welch Allyn service technician.

WARNING Electrostatic discharge (ESD) can damage or destroy electronic
components. Handle static-sensitive components only at static-safe
workstation.

WARNING Consider all electrical and electronic components of the monitor as
static-sensitive.

Electrostatic Discharge (ESD)

Electrostatic discharge is a sudden current flowing from a charged object to another
object or to ground. Electrostatic charges can accumulate on common items such as
foam drinking cups, cellophane tape, synthetic clothing, untreated foam packaging
material, and untreated plastic bags and work folders, to name only a few.

Electronic components and assemblies, if not properly protected against ESD, can be
permanently damaged or destroyed when near or in contact with electrostatically charged
objects. When you handle components or assemblies that are not in protective bags and
you are not sure whether they are static-sensitive, assume that they are static-sensitive
and handle them accordingly.

• Perform all service procedures in a static-protected environment. Always use
techniques and equipment designed to protect personnel and equipment from
electrostatic discharge.

• Remove static-sensitive components and assemblies from their static-shielding bags
only at static-safe workstations—a properly grounded table and grounded floor mat—
and only when you are wearing a grounded wrist strap (with a resistor of at least 1
megohm in series) or other grounding device.

6 Safety Summary CP 100 and CP 200 Electrocardiograph

• Use only grounded tools when inserting, adjusting, or removing static-sensitive
components and assemblies.

• Remove or insert static-sensitive components and assemblies only with monitor
power turned off.

• Insert and seal static-sensitive components and assemblies into their original static­shielding bags before removing them from static-protected areas.

Always test your ground strap, bench mat, conductive work surface, and ground cord
before removing components and assemblies from their protective bags and before
beginning any disassembly or assembly procedures.

General Cautions

The following caution statements apply to electrocardiograph use in general. Caution
statements that apply specifically to particular procedures, such as connecting the patient
cable or performing an ECG test, appear in the corresponding sections of the manual.

Caution statements indicate conditions or practices that could damage the equipment or
other property.

Caution When removing the electrocardiograph from storage, allow it to
thermally stabilize to surrounding environmental conditions before using it.

Caution To prevent possible damage to the keypad, do not use sharp or hard
objects to press keys. Only use fingertips.

Caution Do not expose the patient cable to strong ultra-violet radiation.

Caution Do not pull or stretch the patient cable. Doing so could result in

mechanical or electrical failures. Form the patient cable into a loose loop before
storing.

Caution Avoid positioning the patient cable where it might get pinched or
stepped on. If the cable’s impedance is altered, measurements might no longer
be accurate, and repair might be necessary.

Caution Using the equipotential terminal for anything but grounding purposes
may contribute to damage of the device.

Caution Use only parts and accessories supplied with the device and available
through Welch Allyn. The use of accessories other than those specified may
result in degraded performance of this device.

Caution Portable and mobile RF communications equipment can affect the
performance of the electrocardiograph.

Caution Other medical equipment—including but not limited to defibrillators,
ultrasound machines, pacemakers, and other stimulators—may be used
simultaneously with the electrocardiograph. However, such devices may disturb
the electrocardiograph signal.

7

2

Overview

Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Service Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Product Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Recommended Service Intervals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Controls, Indicators, and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

“System Settings” Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

About the Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Moving Through the Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Reviewing the Device Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

CP 100 and CP 200 Electrocardiograph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

Purpose and Scope

The service manual is a reference for periodic preventive maintenance and corrective
service procedures for the Welch Allyn CP 100 and CP 200 Electrocardiograph.

Corrective service is supported to the level of field-replaceable units. This includes some
circuit-board assemblies and some subassemblies, case parts, and other parts. See “Field

Replaceable Parts” on page 69 for complete list of user-replaceable service parts.

Note

This guide provides troubleshooting information, assembly procedures, and instructions
for functional testing and performance verification. It is intended for use only by
technically qualified service personnel.

Repair and replacement of the main board is not supported. All service work on
the main board must be performed by certified and qualified service personnel at
an authorized Welch Allyn service center.

Caution No component-level repair of circuit boards and subassemblies is
supported. Use only the repair procedures described in this manual.

WARNING When performing a service procedure, follow the instructions
exactly as presented in this manual. Failure to do so could damage the monitor,
invalidate the product warranty, and lead to serious personal injury.

Service Options

Warranty Service

All repairs on products under warranty must be performed and/or approved by Welch
Allyn. Refer all warranty service to Welch Allyn Factory Service or another authorized
Welch Allyn Service Center. Obtain an RMA number for all returns to Welch Allyn Factory
Service – see Returning Products (page 9).

Caution Unauthorized repairs will void the product warranty.

Non-Warranty Service

Welch Allyn Factory Service and authorized Service Centers support non-warranty repairs.
Contact any Welch Allyn regional service center for pricing and service options.

Welch Allyn offers modular repair parts for sale to support non-warranty service. This
service must be performed only by qualified end-user biomedical/clinical engineers using
this service manual.

The Welch Allyn Electrocardiograph Service Information supports certain service
functions. For information about any Welch Allyn product, please call Welch Allyn

Technical Support: (page ii).

Service Manual CP 100 and CP 200 Electrocardiograph 9

Technical Support Services

Welch Allyn offers the following technical support services:

Telephone support
Loaner equipment
Service agreements
Replacement service parts
Factory Service

For information on any of these services, contact Welch Allyn at the numbers listed on

page ii

Returning Products

To return a product for service, contact Welch Allyn Technical Support and request a
Return Material Authorization (RMA) number.

Note

To ship the unit, please observe these packing guidelines:

Welch Allyn does not accept returned products without an RMA.

• When requesting an RMA, please have the following information available:

• Product name, model number, and serial number

• A complete return shipping address, including a contact name and phone

number; include any special shipping instructions

• A purchase-order number or credit-card number if the product is not covered by

warranty

• A full description of the problem or service request

• Remove from the package all hoses, connectors, cables, sensors, power cords,

and other ancillary products and equipment, except those items that might be
associated with the problem.

• Use the original shipping carton and packing materials, or as close an

approximation as possible.

• Include a packing list.

• Write the Welch Allyn RMA number with the Welch Allyn address on the outside

of the shipping carton.

United States federal regulations require that any unit received by Factory Service must
be free from blood-borne pathogens before processing. All incoming products are cleaned
as well as possible, but products that cannot be effectively cleaned cannot be accepted
for repair. Please thoroughly clean all organic residues from the product before shipment.
This will ensure safe receipt, processing and repair, and will help expedite the return of
your device.

10 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

Product Configurations

Model numbers for the configurations are as follows:

Model Number Description

CP 1 CP 100 Electrocardiograph

CP 1A CP 100 Electrocardiograph w/Interpretation

CP 2 CP 200 Electrocardiograph

CP 2A CP 200 Electrocardiograph w/Interpretation

CP 2S CP 200 Electrocardiograph w/Spirometry

CP 2AS CP 200 Electrocardiograph w/Interpretation & Spirometry

Recommended Service Intervals

Interval or Condition Action Recommended Procedure

Every 6 – 24 months (per
hospital protocols)

Battery does not hold a charge Check battery capacity

Unit has been dropped or
otherwise damaged

Unit malfunctioning Complete Functional test Functional Verification (page 29)

Unit does not pass Functional
Verification

Complete Functional test Functional Verification (page 29)

Battery Accuracy Test (page 31)

Replace battery

Complete Functional test Functional Verification (page 29)

Troubleshooting and repair followed by functional test

Return to authorized service center

Replacing the Battery or Fuse (page 58)

Troubleshooting (page 41)
Disassembly and Repair Procedures (page

47)
Functional Verification (page 29)

Returning Products (page 9)

Service Manual CP 100 and CP 200 Electrocardiograph 11

Controls, Indicators, and Connectors

This section describes the controls, indicators, and connectors that are part of the
electrocardiograph.

Figure 1. Top of CP 200 Electrocardiograph

Softkeys and functions keys
See Figure 10 on page 15.

Keyboard
See Figure 8 on page 14.

Figure 2. Top of CP 100 Electrocardiograph

Keyboard
See Figure 9 on page 14.

12 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

Figure 3. Back of Electrocardiograph

AC power inlet

Equipotential stud

AC fuses

Figure 4. Right Side of Electrocardiograph

Com port B

(for USB cable)

SD memory card

slot

(Not functional on CP 100)

Figure 5. Left Side of Electrocardiograph

Paper tray latch

Spirometry port

(Not functional on CP 100)

Reset

Button

Service Manual CP 100 and CP 200 Electrocardiograph 13

Figure 6. Front of CP 200 Electrocardiograph

Com port A

(for patient cable)

Figure 7. Front of CP 100 Electrocardiograph

Com port A

(for patient cable)

14 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

Keyboard Functions

Figure 8. Keyboard for CP 200 Electrocardiograph

On/Off

See “ Powering the
Electrocardiograph” in the
Directions of Use manual.

Green LED

Lights up when the
electrocardiograph is
connected to AC
power.

Ta b

Moves through the
data-entry fields.

Shift

Capitalizes letters.

Space

Enters a space.

Figure 9. Keyboard for CP 100 Electrocardiograph

Backspace

Deletes the character to the
left of the cursor.

Enter

See “Moving Through the Menus” on
page 18.

Menu

See “About the Main Menu”
on page 17.

Help

See the Directions For
Use manual.

Navigation arrows

See “Moving Through the

Menus” on page 18.

Green LED

Lights up when the
electrocardiograph is
connected to AC
power.

Ta b

Moves through the
data-entry fields.

Help

See the Directions
for Use manual.

Shift

Capitalizes letters.

On/Off

See “ Powering the
Electrocardiograph” in the
Directions of Use manual.

Space

Enters a space.

Stop/Cancel

Stops any current activity.
See “Moving Through the

Menus” on page 18.

Backspace

Deletes the character to the
left of the cursor.

Enter

See “Moving Through the

Menus” on page 18.

Menu

See “About the Main

Menu” on page 17.

Auto ECG

Begins Auto ECGs,
normal and stat.

Rhythm ECG

Begins a Rhythm ECG.
.

Navigation arrows

See “Moving Through the

Menus” on page 18.

Service Manual CP 100 and CP 200 Electrocardiograph 15

Figure 10. Softkeys and Function Keys for the CP 200 Electrocardiograph

Softkeys

These softkeys display text or images that
correspond to the unlabeled buttons below
them. The content changes from screen to
screen.

Softkey buttons

These buttons activate the functions displayed
above them. If a softkey is blank, pressing its

Auto ECG Spirometry Rhythm ECG Stop/Cancel OK

button has no effect.

Function Keys

Auto ECG

Begins Auto ECGs, normal and stat.

Spirometry

Begins spirometry tests.
See spirometry manual.

Rhythm ECG

Begins Rhythm ECGs.

Stop/Cancel

Stops any current activity.
See “Moving Through the Menus” on page 18.

OK

Accepts data that you have entered, or chooses a highlighted item.
See “Moving Through the Menus” on page 18.

16 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

“System Settings” Menu Tree

P 200 Menu Tree

System Settings

Device

Configuration

Set Date/Time
Language
Date Format
Time Format
Weight Unit
Height Unit
Power-Save
Device ID
Audio Beeper
Flow Unit
Pressure Unit
Temperature
Increase Display Contrast
Decrease Display Contrast
Contact Information
Previous Menu
* Applicable for spirometry only.

*

*

*

CP 100 Menu Tree

Device

Info

About
Print Settings
Enable Options
Upgrade Software
Service Info
Previous Menu

System Settings

Device

Administration

See “Managing Data” in the
Directions for Use manual.

Service Info

Print Log
Battery Life Test
Printer Test
Export Files
Import Files
Delete Files
Serial Number
Lead Off Thershold
Service Tests
LCD Test
Previous Menus

Device

Configuration

Set Date/Time
Language
Date Format
Time Format
Weight Unit
Height Unit
Power-Save
Device ID
Audio Beeper
Increase Contrast
Decrease Contrast
Contact Information
Previous Menu

Device

Info

About
Print Settings
Enable Options
Upgrade Software
Service Info
Previous Menu

Service Info

Print Log
Battery Life Test
Printer Test
Export Files
Import Files
Delete Files
Serial Number
Lead Off Thershold
Service Tests
Previous Menus

Service Manual CP 100 and CP 200 Electrocardiograph 17

About the Main Menu

The main menu appears when you press the Menu key .

Figure 11. Main Menu CP 200

Main Menu

1 Test Directory
2 Scheduled Patients
3 ECG Settings
4 Spirometry Settings
5 System Settings
6 Edit Medication List
7 Edit History List
0 Exit

Figure 12. Main Menu CP 100

Main Menu

1 ECG Settings
2 System Settings
0 Exit

9:17AM Mar 16 05

9:17AM Mar 16 05

Submenu Purpose Procedure

Test Directory View, change, print, or send saved tests. (CP

200 Only)

Scheduled Patients View the scheduled patients list, add

patients to the list, or delete patients from

See the Directions for Use manual on your
specific model.

See the Directions for Use manual on your
specific model.

the list. (CP 200 Only

ECG Settings Review or change ECG settings: Auto

Report format, Rhythm Report format, and

See the Directions for Use manual on your
specific model.

so on.

Spirometry Settings Review or change spirometry settings:

display settings, print settings, and so on. (CP

See the Directions for Use manual on your
specific model.

200 Only

System Settings Review or change system settings: device

configuration, device info, user setup, and

See the Directions for Use manual on your
specific model.

so on.

Edit Medication List Edit the list of medication choices available

to choose during patient data entry. (CP 200

See the Directions for Use manual on your
specific model.

Only

Edit History List Edit the list of clinical conditions available to

choose during patient data entry. (CP 200

See CP 200 Electrocardiograph Directions for
Use manual.

Only

18 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

Moving Through the Menus

Figure 13. CP 200 Standard Menu Figure 15. CP 200 Parent Menu With Submenu

ECG Setup : Edit Auto Report 1

1 Format

2 Interp Settings
3 Patient Data
0 Previous Menu

9:17AM Mar 16 05

Figure 14. CP 100 Standard Menu

Edit Auto Report

1 Format

2 Interp Settings
3 Patient Data
0 Previous Menu

9:17AM Mar 16 05

Edit Auto Report 1 : Format

1 Lead Arrangement
2 Rhythm Lead 1
3 Rhythm Lead 2
4 Rhythm Lead 3
5 Extended Measurements
6 Average Cycles
0 Previous Menu

9:17AM Mar 16 05

3x4
3x4 +1R
3x4 +3R
6x2

12x1

6x2 50 mm/s
6x2 10 Ext.
No Print

Figure 16. CP 100 Parent Menu with Submenu

Format

1 Lead Arrangement

2 Rhythm Lead 1
3 Rhythm Lead 2
4 Rhythm Lead 3
5 Extended Measurements
6 Average Cycles
0 Previous Menu

9:17AM Mar 16 05

3x4 +1R
3x4 +3R
6x2
12x1
6x2 50 mm/s
6x2 10 Ext.
No Print

Desired Actions Keys to Press

To move up or down a list or (keyboard or softkey arrows)

To open a standard menu (Figure 13)

or or

or item’s number or letter

To move from parent menu to submenu on same
screen (Figure 15)

To perform an action

or

To accept data
To check or uncheck a checkbox

To return to parent menu from submenu on same
screen (Figure 15) or

(To select the highlighted submenu
item.)

or

(To make no change.)

To move back through the menus or zero key

To move through data-entry fields

To return to the “Main Screen” from a standard menu
(Figure 13)

Note

Keyboard and softkey arrows work the same way.

Service Manual CP 100 and CP 200 Electrocardiograph 19

Reviewing the Device Information

1. Press the Menu key .

2. Choose System Settings > Device Info.

The following screen appears.

Figure 17. “Device Info” CP 200 Screen

System Setup : Device Info

1 About
2 Print Settings
3 Enable Options
4 Upgrade Software
5 Service Info
0 Previous Menu

9:17AM Mar 16 05

Figure 18. “Device Info” CP 100 Screen

Device Info

1 About
2 Print Settings
3 Enable Options
4 Upgrade Software
5 Service Info
0 Previous Menu

9:17AM Mar 16 05

3. Select the desired item:

Item Description

About Displays the following information about the electrocardiograph:

• serial number

• modules configured

• version numbers

Print Settings CP 200 = Prints your ECG, spirometry, and system settings as well as medication &

history lists.
CP 100 = Prints your ECG and system settings.

Enable Options Contact Technical Support. For phone numbers, see page ii.

Upgrade Software Contact Technical Support. For phone numbers, see page ii.

Service Info Accessible to service support only. See Service Menus (page 20)

20 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

CP 100 and CP 200 Electrocardiograph

Service Menus

Entering the Service Info Screen

This menu is password protected and only Welch Allyn Authorized Technician can access
the Service Menus,)

CP 200 Service Info Screen
Procedure Figure 19. CP 200 “User Login”

1. Power ON unit.

2. Press Menu key.

3. Choose System Setting> Device Info> Service Info

The “UserLogin” screen appears. See Figure 19.

UserLogin

9:17AM Mar 16 05

Use the “Tab” or “Arrow” keys to move the cursor from field to field.

Enter the following:
User ID: Service (case sensitive)
Password:normser (case sensitive)

4. Press “Done” using the softkey. Do not use the“Enter” key.

The “Service Info” screen appears see Figure 20

User ID

Password

Enter valid user ID and password

Change

Password

Cancel

Figure 20. CP 200 “Service Info” Screen

9:17AM Mar 16 05

Service Info

1.Print Log

2.Battery Life Test

3.Printer Test

4.Export Files

5.Import Files

6. Delete Files

7.Serial Number

8.Lead Off Thershold

9.Service Tests
A LCD Test

0.Previous Menus

Done

Service Manual CP 100 and CP 200 Electrocardiograph 21

CP 100 Service Info Screen
Procedure Figure 21. CP 100 “UserLogin” Screen

1. Power ON unit.

2. Press Menu key.

3. Choose System Setting > Device Info > Service Info

User Login

9:17AM Mar 16 05

The “UserLogin” screen appears. See Figure 21.

User ID

Use the “Arrow” keys to move the cursor from field to field.

Password

Enter the following:
User ID: Service (case sensitive)

Done

Password:normser (case sensitive)

4. Highlight “Done” using the down arrow key.

5. Press “Enter” key.

The “Service Info” screen appears. See Figure 22

Figure 22. CP 100 “Service Info” Screen

9:17AM Mar 16 05

Service Info

1. Print Log

2. Battery Life Test

3. Printer Test

4. Export Files

5. Import Files

6. Delete Files

7. Serial Number

7. Lead Off Thershold

8. Service Tests

0. Previous Menus

Print Log

Caution These printouts can be very long. Only use the printouts if necessary.
To stop the printouts press Stop/Cancel.

Function Description

Print Events: This prints all events stored in the unit in descending

order by date and time. Used for development of the
software. Has no Service value.

Print Errors: This prints any errors that occurred in the unit, in

descending order by date and time, during normal
operation. This can be valuable to use when the end­user says he/she has been having problems.

Print All: This prints the Print Events and Print Errors as

described above.

Figure 23. “Print Log” Screen

Print Log

1.Print Events

2.Print Errors

3.Print All

0.Previous Menus

9:17AM Mar 16 05

22 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

Battery Life Test

This displays the percentage of battery life remaining on the battery, based on the number
of charges it has incurred. This percentage approximates the life left in the battery based
on this information.

Caution Only reset when the battery has been replaced and charged for at
least 12hrs continuously.

Function Description

Reset Resets the battery life to 100%. This is used only

when the battery has been replaced

Reset Pages Resets page count for the number of prints made on

the printer. Should only be reset when print head has
been replaced.

Printer Test

Function Description

Figure 24. “Battery Life Test” Screen

9:17AM Mar 16 05

Battery Life Test

Battery Life Remaining: 99%

Reset

Reset
Pages

Figure 25. Printer Test” Screen

Exit

Test Page Prints a test page which repeats until the “Cancel”

button is pressed. Refer to Functional Verification test
for explanation. See Printer Test (page 35).

Ramp Test Prints a one page ramp test. Refer to Functional

Verification test for explanation. See Printer Test

(page 35).

Printer Test

Test Page

9:17AM Mar 16 05

Select a print test

Ramp

Page

Exit

Service Manual CP 100 and CP 200 Electrocardiograph 23

Export Files

Use the “Export Files” function when the Main PCB is replaced, to reinstall the
customer’s saved ECG information and spirometry (CP 200 Only) or the unit’s original
configuration after repair.

Caution The tests exported to the SD memory card contain patients’ medical
information and should be treated the same as any confidential medical
information.

Note

If you are performing all functions you only need one SD memory card. Use a
formatted blank SD memory card installed in the unit for each function.

Function Description

Export Log Files Exports the Event log to a SD memory card in a folder

called Log. Once complete, a message appears at
bottom of the screen stating if the export was
successful or not.

Export Audit Trail
(CP 200 ONLY)

Export Tests (CP 200
ONLY)

Export
Configuration Files:

Exports the audit information of the unit to a SD
memory card in a folder called Audit. Once complete
a message appears at bottom of screen stating if
export was successful or not.

Note: Audit information is available if Audit trail
is turned on in Device Administration. See the CP
200 Directions for Use manual

Exports all tests in the memory to a SD memory card
in a folder called Tests for importing after repair.

Exports the configuration of the unit (i.e. print
formats, patient data settings, logins, etc.) to a SD
memory card in a folder called Config for importing
after repair.

Figure 26. “Export Files” Screen

Export Files

1.Export Log Files

2.Export Audit Files

3.Export Tests

4.Export Configuration Files

0.Previous Menus

9:17AM Mar 16 05

24 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

Import Files

Function Description

Import Tests (CP 200
ONLY)*

Imports previously exported tests from the SD
memory card.

*Before importing tests, you must delete the previous
copies from the unit using the “Delete Files” menu.

Import
Configuration Files

Imports previously exported configuration files from
SD memory card.

After the import configurations files process is
complete, the screen displays a reset prompt. Press
any key to reset, and then follow the prompts to set
the date and time.

Delete Files

Figure 27. “Import Files” Screen

Import Files

1.Import Tests

2.Import Configuration Files

0.Previous Menus

Caution No warning is displayed when you delete files/tests.

9:17AM Mar 16 05

Function Description

Delete Log Files Deletes log files (event and error) from unit.

Delete Audit Files:

Deletes the Audit Log file from the unit.

(CP 200 ONLY)

Delete Tests: (CP
200 ONLY)*

Delete

Deletes ALL saved ECG and Spirometry tests in
memory.

Deletes the Configuration files from the unit.

Configuration Files:

Note

*Before importing the tests file, you must delete any previous tests from the unit using
the “Delete Files” menu.

You do not have to delete the Configuration files on the unit before importing a
Configuration files from SD memory card. All previous Configurations Files on the unit will
be overwritten during the importing process.

Figure 28. “Delete Files” Screen

Delete Files

1.Delete Log Files

2.Delete Audit Files

3.Delete Tests

4.Delete Configuration Files

0.Previous Menus

9:17AM Mar 16 05

Service Manual CP 100 and CP 200 Electrocardiograph 25

Serial Number

Used to enter the S/N of the unit after a Main Board has been replaced.

Note

For use by Welch Allyn Authorized Repair facilities.

Lead Off Threshold

The Lead Off Threshold setting provides a mechanism to increase/decrease the sensitivity
of the device to lead impedance. Lead impedance is the electrical resistance of a lead.
Lead impedance can rise if there is poor electrode/skin contact. As lead impedance rises,
the input signals become imbalanced, resulting in a poor quality signal.

If the lead impedance for any of the leads is above the threshold, the device replaces the
poor quality signal received from the patient cable with a square wave to indicate to the
user that the affected signals are not usable. The lead impedance of each of the leads is
independent, but there is a single threshold value. The threshold can be any of 15 values,
from 1 (lowest threshold) to 15 (highest threshold). The default threshold is 7. If the
threshold is changed to 1, it causes Lead Off all of the time, and setting it to 15 causes the
leads to never appear “Off”

Function Description

Lead Off Threshold The Lead Off Threshold setting is provided to diagnose problems with the front end. By increasing the Lead

Off Threshold setting, the device accepts higher impedance signals, instead of replacing them with square
waves. Although the device displays poorer quality signals, they may be unsuitable for diagnostic purposes,
because they could be significantly distorted.

The Default setting for the Lead Off Threshold to 7

To access and change the Lead Off Threshold

Select Main Menu > Service Info > Device Info > Lead Off Threshold

Service Tests

Only authorized Welch Allyn Authorized Technicians are to perform the service tests.

Note

Function Description

CPWSTEST.EXE Used to help troubleshoot USB issues.

MEANSMDWTESTER.EXE: Strictly used for development purposes.

To exit any of the applications press the “Enter” or”OK” key.

Enable USB: Turns USB port on to be recognized by computer.

Disable USB: Turns USB port off so it is not recognized by computer.

26 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

Function Description

MMCSDTEST.EXE: Used to test the SD memory card write/read function of the unit. Can also be used to test an SD memory card

for problems.

GO: Starts the SD memory card test by pressing “G”

STOP: Stops the SD memory card test by pressing “S”

ERASE ALL: Erases all files written by this tester by pressing “E”

Card Present: If checked the unit detects the SD memory card inserted.

Write Protect: If checked the unit detects the lock is enabled on the SD memory card.

Pulse: Flashes when test is active

Note: Once the test is started it runs continuously. Press the “S” key to stop the test.

NORMANDY.EXE: Used to return to the ECG program.

NORMTESTER.EXE Strictly used for development purposes.

PPPTEST.EXE Strictly used for development purposes.

PPPTEST2.EXE Used to see battery and charger status/state. There are a number of selections on this screen. Listed below

are the most commonly used functions. To activate a selection press the letter that coincides with the
selection.

Real-time: Activates a real-time monitoring of the readings from the battery circuit.

Battery Voltage: Unplugged from AC this reflects the Voltage of the battery in millivolts; plugged into

AC this reflects the charge voltage in millivolts.

Fast charge = 6800 – 7300
Trickle charge = 6300 – 6800

Battery Current: Indicates charge current in mA when charger is on.

Charger State: Indicates if charge circuit is on or off

Charge State: Indicates if the Fast Charge is on or off

Fast Charge On: Turns fast charge on. If battery is fully charged the sensing circuit can work against

you. It only changes the reading for a brief second before switching back.

Fast Charge Off: Turns fast charge off.

Charger On: Turns charger on when plugged into AC.

Charger Off: Turns charger off.

Service Manual CP 100 and CP 200 Electrocardiograph 27

Function Description

PPPTEST3.EXE Used to see printer assembly status/state. There are a number of selections on this screen. Listed below are

the most commonly used functions. To activate a selection press the letter that coincides with the selection.

Real-time: Activates a real-time monitoring of the readings from the printer assembly.

+24 V State: Status of voltage applied to printhead for printing. Only turns on when motor is on.

Step Motor State: Status of paper drive motor.

Paper Exhaust State: Status of paper in unit.

OK indicates paper is loaded.
Exhausted indicates out of paper.

Paper Status: 'JAM' indicates printer was unable to feed paper and detect a cue mark in the required

time. 'OK' indicates no jam.

Door State: This is equivalent to the Paper Exhaust State. There is no separate door sensor/switch.

Printhead Temperature State: State of printhead temperature. If temperature is too high, the printer

does not print.

Printhead Temperature (C): Indicates temperature of the printhead in Celsius.

Turn ON Motor: Turns stepper motor on to drive paper.

Turn OFF Motor: Turns stepper motor off.

PPPTEST4.EXE Used to see printer Assembly status/state. There are a number of selections on this screen. Listed below are

the most commonly used functions. To activate a selection press the letter that coincides with the selection.

Real-time: Activates a real-time monitoring of the readings from the printer assembly.

Feed to Next Page: Advances paper to next page.

Set Speed to 10 mm/s: Sets paper speed to 10mm/s.

Set Speed to 25 mm/s: Sets paper speed to 25mm/s.

Set Speed to 50 mm/s: Sets paper speed to 50mm/s.

Turn On Motor: Turns stepper motor on to drive paper.

Turn Off Motor: Turns stepper motor off.

Get Paper Registration State: Indicates if the sensor has identified the installed paper. Note: If you

open the door and close it, you must feed the paper to next page so unit can detect a cue mark. When the
unit detects a cue mark, the state changes to YES.

Get Cue Levels: Indicates sensing level for the cue sensor for different paper states.
< 10: Indicates paper door open or out of paper.
10 - 90: Indicates cue sensor over a paper cue mark.
> 190: Indicates cue sensor over white paper.

28 Overview Welch Allyn CP 100 and CP 200 Electrocardiograph

29

3

Functional Verification

Functional Verification Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Full Functional Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Checklist and Test Results Report Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

30 Functional Verification Welch Allyn CP 100 and CP 200 Electrocardiograph

Functional Verification Overview

This section describes the procedure for a complete functional test to support
recommended preventive-maintenance schedules.

A checklist of the functional tests is provided on page 40. It is recommended that you
print a copy of the checklist each time you perform the functional verification procedure,
so you can record and save the test results. If the electrocardiograph ever requires
service, the records of test results often facilitate troubleshooting.

Functional verification does not require opening the device case.

Full Functional Check

WARNING Only qualified service personnel should perform a full functional
checkout procedure.

Whenever the electrocardiograph is serviced or problems are suspected, Welch Allyn
recommends a Functional Check.

Equipment Required

Commercially Available General-purpose/Medical Test Equipment

Item Manufacturer

Power Supply Variable, 0 – 8 VDC, 5.0A

AC withstand voltage (hi-pot) tester Associated Research 3605 or equivalent

Electrical Safety Analyzer w/ECG Fluke DNI 232D or equivalent

Computer PIII or better, CardioPerfect installed, available USB port

SD Memory Card 64Mb or Greater

USB Cable A – A type (WA P/N 401435)

Spirometry Dongle Serial Version (W/A P/N 703552)

Operating/Non-Printing Mode Current Test

When the unit is powered on, the AC is disconnected and the LCD on, the unit’s current
is:

CP 100 Current CP 200 Current

125 to 250 mA @ 6.4V DC ± .05 675 to 825 mA @ 6.4V DC ± .05

(minimum), with voltage and current indicators

1. Unplug unit from line power

2. Connect a DC power supply, adjusted for 6.4V DC ± .05, in place of the battery.

3. Verify the current draw is within limits as indicated for unit after powering the unit up.

Service Manual Functional Verification 31

Battery Accuracy Test

When a voltage of 6.2 ± 0.05 VDC is supplied to the unit battery terminals, and the AC is
disconnected from the unit, the unit reports a “Normal to High” voltage.

When a voltage of 5.45 ± 0.05VDC is supplied to the unit battery terminals, and the AC is
disconnected from the unit, the unit reports a “critically low” voltage.

Note

1. Unplug unit from line power.

2. Connect a DC power supply in place of the battery.

3. Adjust power supply to 6.2VDC.

4. Turn the unit on, and then verify the unit does not indicate a low or critically low

5. Adjust power supply to 5.45 VDC.

6. Verify the unit indicates a critically low power and will shut down.

The unit may have a 5 to 10 second delayed response.

battery.

Sleep/Standby Mode Current Test

When the unit is powered on and the AC is disconnected, and the unit is in low power
standby mode, the unit’s current is:

CP 100 Current CP 200 Current

< 5 mA < 5 mA

1. Unplug the unit from line power and adjust the power supply to 6.4V DC ± .05.

2. Connect the DVM in series with the positive battery connection from the power
supply.

3. Press the on/standby button.

4. Verify the LCD turns off and that the current draw is less than indicated for the unit.

5. Disconnect the power supply.

Note

There may be up to a 10 sec delay in the drop of current due to the progressive
hibernation mode.

Charger Detect Test

1. Connect a DVM to the battery harness while observing correct polarity.

2. Plug the unit into the AC power, and power ON.

3. Choose Main Menu > Systems Setting > Device info > Service Info > Service
Tests>PPPTEST2.EXE.See “Service Tests” on page 25.

32 Functional Verification Welch Allyn CP 100 and CP 200 Electrocardiograph

4. Turn fast charge ON. Check DVM for 6.8 to 7.3 VDC.

5. Turn fast charge off. Check DVM for 6.3 to 6.8 VDC.

6. Unplug the unit from the AC power.

7. Disconnect the DVM and install the battery.

LED Test

Verify the Power LED light is on when unit is plugged in, and verify the light is off when
unit is unplugged.

1. Plug the unit into AC power.

2. Verify the AC indicator LED under the On/Standby button is lit.

3. Unplug the AC power cord.

4. Verify the LED is off.

5. Plug the unit back into AC power.

LCD Test

CP 200

CP 100

Note

1. Choose Main Menu > Systems Setting > Device info > Service Info > LCD Test.

2. Verify the test pattern is visible without breaks and is consistent over the entire

3. Verify Contrast can be adjusted to adequately see the display.

1. Disconnect the patient cable.

2. Turn ON unit. The patient hook up screen appears.

3. Verify the display is visible without breaks.

Note

There may be a few seconds delay in the LED response to the line being removed
and added.

screen.

If contrast adjustment is needed refer to the Directions for Use manual for
CP 100.

Set Unit Initial Configuration/SD Slot Test

Initial Configuration of Unit

1. Verify the Serial Number on the unit is the same as displayed on the unit’s screen. If
incorrect, enter correct S/N. See ““System Settings” Menu Tree” on page 16, Service
Info.

Service Manual Functional Verification 33

Select Main Menu > System Settings > Device Info > Service Info > Serial
Number.

2. If the main board was replaced and a configuration files were exported, import the
configuration files, see “Import Files” on page 24.

3. Print the Configuration of the unit.

Select Main Menu > System Settings > Device Info > Print Settings

4. Verify the settings from the printout.

a. Check for software version installed.

b. S/N of the unit.

c. Interpretation (if applicable).

If imported, check any customized customer settings.

SD Slot Test

1. Insert a formatted SD memory card into the unit.

2. Choose Main Menu > System Settings > Device info > Service Info > Service
Tests>MMCSDTEST.EXE file.

3. Press G to start the test. After 30 seconds the MyFile.TXT increases one increment.

4. Press S to stop the test and confirm that no errors are reported.

ECG Communication Test (ECG Input test and lead off)

Test the patient cable and lead off indications connection.

1. Connect a known good Patient Cable w/leads

2. Connect to ECG simulator with V1/C1 lead disconnected.

3. Power ON unit.

4. Verify the lead placement screen shows V1/C1 lead flashing and all other leads
should appear not flashing.

5. Remove LL from the Simulator and verify LL flashes with all V/C leads grayed, RA,LA
& RL should not be flashing.

6. Connect all leads to the simulator.

7. Verify all leads stop flashing and the next screen appears in approximately three
seconds.

Spirometer Communication Test

CP 200 (Only)

Verify and test the connection of a Spirometer Dongle to the serial port.

1. Attach a known good spirometer dongle to the spirometer port on the side of the unit.

2. Power ON unit.

34 Functional Verification Welch Allyn CP 100 and CP 200 Electrocardiograph

3. Press the Spirometry button

4. Verify that the unit opens the Spirometry module without errors.

USB Communications Test

Verify the test connection between the unit and the CardioPerfect Workstation computer.

1. Connect the unit to the computer using a USB A-A Cable.

2. The computer should recognize the CP 200 connected and load the driver for
communication.

3. Transfer an ECG record to the CardioPerfect Workstation.

a. Press the Menu button.

b. Choose Test Directory.

c. Press the Search softkey.

d. Press the WorkStation softkey.

Beeper Test

4. Verify the record was transferred into the workstation.

Turn on and test the Audible beeper by using the keyboard keys.

1. P o w e r On unit.

2. Choose Main Menu > System Settings > Device Configuration >
Audio Beeper > set to ON.

3. Exit the Main Menu

4. Verify that an Audible beep is heard when invalid keys are pressed on the keyboard.

5. If the Audio Beeper was originally set to off, choose Main Menu >
System Settings > Device Configuration > Audio Beeper > set to OFF to return
the Audio Beeper to its original setting.

Service Manual Functional Verification 35

Keyboard Test

The unit detects all the keys pressed listed in Table 1, “Keyboard Keys”.

Table 1. Keyboard Keys

Key CP 100 CP 200

’5’ 5 5
‘R’ R R
‘D’ D D
‘X’ X X
Backspace Back a space Back a space
‘P’ P P
Down Down a field Down a field
Up Up a field Up a field

1. P o w e r On unit.

2. Press Auto ECG. See Figure 9 on page 14 for button location.

3. The patient information screen appears.

4. Press the Keys indicated in Table 1, “Keyboard Keys” and verify the corresponding
action.

Printer Test

5. Use the softkeys to verify the correct response for the keys (Only for the CP 200 unit).
See Figure 10 on page 15.

Note

1. Plug unit into AC power to perform the printer test.

2. Choose Main Menu > System Settings > Device Info > Service Info > Printer

3. Press the “Test Page” softkey. The test print starts after a few seconds.

4. Press the “Cancel” softkey when the second page has completed printing.

5. Use the second test print page to verify correct operation. See Table 2, “Print

Please note these measurements are dependent upon the tracking of the paper
being in the center. Please make sure there is no curling/crinkling of the paper at
the top or bottom when printing.

Test.

Verification Check List” and Figure 29 on page 36.

36 Functional Verification Welch Allyn CP 100 and CP 200 Electrocardiograph

Table 2. Print Verification Check List

Point Description

Point A Verify the distance of the arc on the circle from the top edge of the paper is 37mm +/-

Point B Verify the distance of the arc on the circle from the left edge of the paper is 45mm +/-

Point C Verify line is straight and without breaks from top to bottom

Point D Verify thick black line is Uniform in Blackness without breaks from top to bottom

Point E Verify line is straight and measures 200mm +/- 4mm

Point F Verify the print is readable

Point G Verify the lead in and output trail of the cue sensor are between 19 and 82mm down

Point H Verify the cue sense pattern is between 97 and 135mm down from the 200mm line

3mm

5mm

from the 200mm line measured in point E

measured in point E

Figure 29. Test Printout Example

Service Manual Functional Verification 37

Ramp Page Test Printout

1. Press the Ramp Page key.

2. Verify the top of the ramp cuts off between 250 and 550 on the gauge printed.

Figure 30. Ramp Printout Example

38 Functional Verification Welch Allyn CP 100 and CP 200 Electrocardiograph

Dielectric Strength Test

It is important to complete the dielectric strength test after any procedure in which the
monitor is opened to verify proper patient isolation.

WARNING Failure to run the dielectric test when indicated could cause serious
injury to patients, and could lead to damage to the monitor.

WARNING Always follow the tester manufacturer’s operation instructions
exactly. Failure to perform this test properly can result in serious injury or death.

WARNING This test must be performed by qualified service personnel only.

WARNING Run this test, only, on an insulated table top, and away from other

people and equipment.

WARNING Must avoid connector shell and pe ground because pe is only
resistant to 500 Vac.

WARNING The patient isolation test involves exposure to extremely high
voltages and is extremely hazardous.

The patient isolation test requires an AC Withstand Voltage (hi-pot) Tester, such as the AR
3605 or equivalent. If this equipment is not available, Welch Allyn can perform the patient
isolation test for you quickly, for a nominal fee

.

To create test cables for the patient isolation test. See “Hi-Pot Test Connections” on
page 39.

Set up the test parameters on the AC Withstand Voltage Tester as follows:

Note

Refer to the tester manufacturer’s operation manual for complete details on set
up and use.

Parameter Specification

Voltage 1500Vac
Maximum Limit 5.00mA
Minimum Limit 0.15 mA
Ramp Up 10 s
Dwell 1 min.
Delay 0.5 s
Ramp Down 0.0 s
Arc Sense 0
Frequency Local line (50 Hz or 60 Hz)
Continuity Off
Connect Off

To create test cables for this procedure. See “Hi-Pot Test Connections” on page 39.

1. Connect the modified power cord between the return jack on the tester and the AC
input of the unit.

2. Connect the high voltage cable between the equipotential stud and the high voltage
on the tester.

3. Press the test button to run the AC withstand voltage test.

Service Manual Functional Verification 39

4. Verify the electrocardiograph passed the test. (If the unit current never exceeds

5.00mA, the shielding is sufficient.)

Hi-Pot Test Connections

Cable Electrocardiograph Connection Hi-Pot Tester Connection

Connector/

Cable

Power Cord IEC Power cord AC Input

Connect to Wiring Connect to

Connector

Hot and neutral (black and white) wires connected together and
terminated appropriately for your hi-pot tester. Cut and terminate
the ground (green) wire to prevent possible injury.

Return

Chassis, Earth and Patient Leakage Current Tests

Verify continued electrical safety of the device, using IEC 60601-1 or ANSI/AAMI ES1
methods and limits. Test for the following:

• Earth leakage

• Chassis leakage

• Patient leakage

Note

Refer to the Electrical Safety Analyzer manual for complete details on set-up and
use for testing.

40 Functional Verification Welch Allyn CP 100 and CP 200 Electrocardiograph

Checklist and Test Results Report Form

Use a copy of the form to track your progress though the validation tests.

Electrocardiograph Serial #:
Tested by:
Test date:

Initial Test Result Pass

(or N/A)

Operating Non-Printing
Mode Current

Battery Accuracy Normal:

Sleep/Standby Current (mA)

Charger Detect Fast Charge: (VDC)

LED

LCD

Initial Configuration/
SD Card

ECG Communication

Spirometry

USB Communication

Beeper

Keyboard

CP 100: ______ (mA)

CP 200: ______ (mA)

Critical:

Trickle: (VDC)

Fail

Printer Test Page:

Ramp Page:

41

4

Troubleshooting

Problem-Solving Suggestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Service Policy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

42 Troubleshooting Welch Allyn CP 100 and CP 200 Electrocardiograph

Problem-Solving Suggestions

Caution Replace parts, components, or accessories only with parts supplied or
approved by Welch Allyn. The use of any other parts can lead to inferior device
performance and will void the product warranty.

This section includes several tables:

• Lead quality problems (Ta ble 3)

• System failure problems (Tab le 4, on page 43)

• System messages (Tab le 5, on page 44)

If you try these suggestions and still have problems, contact Technical Support. For phone
numbers, see “For information about any Welch Allyn product, please call Welch Allyn

Technical Support:” on page ii

Table 3. Lead Quality Problems

Condition Causes Actions

A red dot is flashing on the Lead Off
screen. (CP 200)

A dot is flashing on the Lead Off screen.
(CP 100)

OR

• Electrode contact may be poor.

• A lead may be loose.

• Reattach the lead.

• Replace the electrode.

• Verify that the electrode area has been properly
prepared: shaved, cleaned with alcohol or
acetone, allowed to dry.

• Verify that electrodes have been properly stored
and handled.

Lead-off information is displayed on the
screen.

OR

One or more leads prints as a square
wave:

Wandering baseline (an upward and
downward fluctuation of the waveforms):

Muscle tremor interference (random,
irregular voltage superimposed on the
waveforms). May resemble or coincide
with AC interference:

• Electrodes that are dirty, corroded,
loose, or positioned on a bony area.

• Insufficient or dried electrode gel.

• Oily skin or body lotions.

• Rising and falling of chest during rapid
or apprehensive breathing.

• Patient is uncomfortable, tense,
nervous.

• Patient is cold and shivering.

• Exam bed is too narrow or short to
comfortably support arms and legs.

• Arm or leg electrode straps are too
tight.

• Clean skin with alcohol or acetone.

• Reposition or replace electrodes.

• Help patient relax.

• If wandering baseline persists, turn the baseline
filter on. See “Base Line Filter” in the CP 200
Directions for Use Manual.
See “Adjust Baseline Filter” in the CP 100
Directions for Use Manual.

• Help patient get comfortable.

• Check all electrode contacts.

• If interference persists, turn the muscle-tremor
filter on. See “Muscle Filter” in the CP 200
Directions for Use Manual.
See “Adjust Muscle Filter” in the CP 100
Directions for Use Manual.

• If interference still persists, the problem is
probably electrical in nature. See the following
suggestions for reducing AC interference.

Service Manual Troubleshooting 43

Table 3. Lead Quality Problems (continued)

Condition Causes Actions

AC interference (even-peaked, regular
voltage superimposed on the waveforms).
May resemble or coincide with muscle­tremor interference.

• Electrodes that are dirty, corroded,
loose, or positioned on a bony area.

• Insufficient or dried electrode gel.

• Patient or technician touching an
electrode during recording.

• Patient touching any metal parts of an
exam table or bed.

• Broken lead wire, patient cable, or
power cord.

• Electrical devices in the immediate
area, lighting, concealed wiring in
walls or floors.

• Improperly grounded electrical outlet.

• Incorrect AC filter frequency setting or
AC filter is turned off.

• Check all electrode contacts and lead wires.

• Verify that the patient is not touching any metal.

• Verify that the AC power cable is not touching
the patient lead cable.

• Verify that the proper AC filter is selected. See
“Mains Filter” in the Directions For Use manual.

• If interference persists, unplug the
electrocardiograph from AC power and run it on
the battery. If this solves the problem, you’ll
know that the noise was introduced through the
power line.

• If interference still persists, the noise may be
caused by other equipment in the room or by
poorly grounded power lines. Try moving to
another room.

Table 4. System Failure Problems

Condition Causes Actions

Won't turn on when plugged into AC
power.

Won't turn on when unplugged from AC
power.

Shuts down during printing Battery low or bad. • Recharge the battery. See “Recharging a Fully

Prints fewer than 10 reports on a full
battery charge.

• Faulty AC power connection.

• Blown AC fuses.

• No AC power.

• Battery disconnected or incorrectly
connected.

• Battery low, not charging, depleted, or
bad.

• Blown battery fuse.

Degraded battery. Replace battery. See“Replacing the Battery or Fuse”

• Check the AC power source.

• Check the AC fuses. See “Replacing the AC
Fuses” in the Directions for Use manual.

• Check battery connections. See“Replacing the

Battery or Fuse” on page 58.

• Recharge the battery. See “Recharging a Fully
Discharged Battery” in the Directions for Use
manual.

• Replace battery. See“Replacing the Battery or

Fuse” on page 58.

• Replace battery fuse. See “Replacing the Battery

(DC) Fuse” on page 60.

Discharged Battery” in the Directions for Use
manual.

• Replace battery. See“Replacing the Battery or

Fuse” on page 58.

on page 58.

44 Troubleshooting Welch Allyn CP 100 and CP 200 Electrocardiograph

Table 5. System Messages (alphabetical order)

System Message Problems Actions

“A test is being printed that has not been
saved and will be lost. Continue
shutdown?” (CP 200)

“Audit Trail is too large. Please print and
purge.” (CP 200)

“Battery extremely low. Please connect
AC power.”

“Insufficient space available” Not enough space on memory card. • Delete some tests from the card at a PC.

“Memory card error” Problem writing to memory card. • Verify that the write-protect tab is in the

“Out Of Paper” • Printer is out of paper.

was pressed while printing an

Auto ECG.

Audit information is approaching its
maximum allotted storage.

Battery low or bad. • Recharge the battery. See “Recharging a Fully

• Printer door is open.

To shut down without saving the test, press .

To cancel the shutdown, press .

Print and purge the audit trail. See “Working With the
Audit Trail”.

Discharged Battery” in the Directions for Use
manual.

• Replace battery. See“Replacing the Battery or

Fuse” on page 58.

• Use a different card.

unprotected position.

• Reseat the card in its slot.

• Use a different card.

• Load paper. See “Loading the Thermal Chart
Paper” in the Directions for Use.

• Close the printer door. See “Loading the Thermal
Chart Paper” in the Directions for Use.

“Paper Error” (CP 200)
“Paper Jam” ( CP 100)

“Powering down” Low battery. Recharge the battery. See “Recharging a Fully

“Problem loading the following settings:
<System>
<ECG>
*
*
*
Using default settings.”

“Shutdown?” was pressed while printing a

“Temperature Error” Printer head temp is too high. Allow to cool, then try again.

“Test has not been saved. Continue
shutdown?” (CP 200)

“Unable to communicate with
workstation“ (CP 200)

Paper was loaded incorrectly. • Reload the paper. See “Loading the Thermal

Problem loading your settings at startup.
May indicate memory problems.

Rhythm ECG.

was pressed after printing an

Auto ECG.

• Configuration not correct.

• Cable not properly connected.

Chart Paper” in the Directions for Use.

Discharged Battery”.

Contact Technical Support. For phone numbers, see

page ii.

To shut down, press .

To cancel the shutdown, press .

To shut down without saving the test, press .

To cancel the shutdown, press .

• Verify communication settings on the PC.

• Check cable connections.

Service Manual Troubleshooting 45

Limited Warranty

Welch Allyn, Inc., warrants that the Cardiopulmonary line of electrocardiographs, including
the CP 100 and CP 200 models (the Products) meet the labeled specifications of the
Products and will be free from defects in materials and workmanship that occur within 3
years after the date of purchase, except that accessories used with the Products are
warranted for 90 days after the date of purchase. Such accessories include: lead wires,
cabling, electrodes, and battery.

The date of purchase is: 1) the date specified in our records, if you purchased the Product
directly from us, 2) the date specified in the warranty registration card that we ask you to
send to us, or 3) if you don’t return the warranty registration card, 30 days after the date
on which the Product was sold to the dealer from whom you bought the Product, as
documented in our records.

This warranty does not cover damage caused by: 1) handling during shipping, 2) use or
maintenance contrary to labeled instructions, 3) alteration or repair by anyone not
authorized by Welch Allyn, and 4) accidents.

If a Product or accessory covered by this warranty is determined to be defective because
of defective materials, components, or workmanship, and the warranty claim is made
within the warranty period described above, Welch Allyn will, at its discretion, repair or
replace the defective Product or accessory free of charge. If your Product requires repairs
covered by this warranty, upon your request Welch Allyn will loan to you, at no cost, a
substitute Product for use until your repaired Product is returned.

You must obtain a return authorization from Welch Allyn to return your Product before you
send it to Welch Allyn’s designated service center for repair. Contact Welch Allyn
Technical Support. For phone numbers, see page ii.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILTY
AND FITNESS FOR A PARTICULAR PURPOSE. WELCH ALLYN’S OBLIGATION UNDER
THIS WARRANTY IS LIMITED TO REPAIR OR REPLACEMENT OF PRODUCTS
CONTAINING A DEFECT. WELCH ALLYN IS NOT RESPONSIBLE FOR ANY INDIRECT OR
CONSEQUENTIAL DAMAGES RESULTING FROM A PRODUCT DEFECT COVERED BY
THE WARRANTY.

46 Troubleshooting Welch Allyn CP 100 and CP 200 Electrocardiograph

Service Policy

All repairs on products under warranty must be performed or approved by Welch Allyn.
Unauthorized repairs will void the warranty. In addition, whether or not covered under
warranty, any product repair shall exclusively be performed by Welch Allyn certified
service personnel.

If the product fails to function properly—or if you need assistance, service, or spare
parts—contact the nearest Welch Allyn Technical Support Center. For phone numbers,
see page ii.

Before contacting Welch Allyn, try to duplicate the problem, and check all accessories to
ensure that they are not causing the problem. When calling, please be prepared to
provide:

• Product name and model number and complete description of the problem.

• Serial number of your product (if applicable).

• Complete name, address and phone number of your facility.

• For out-of-warranty repairs or spare parts orders, a purchase order (or credit card)
number.

• For parts orders, the required spare or replacement part numbers.

If your product requires warranty, extended warranty, or non-warranty repair service,
please call first the nearest Welch Allyn Technical Support Center. A representative will
assist you troubleshooting the problem and will make every effort to solve it over the
phone, avoiding potential unnecessary returns.

In case a return cannot be avoided, the representative will record all necessary
information and will provide a Return Material Authorization (RMA) number, as well as the
appropriate return address. An RMA number must be obtained prior to any return.

If you have to return goods for service, follow these recommended packing instructions:

• Remove all hoses, cables, sensors, power cords, and ancillary products (as
appropriate) before packing, unless you suspect they are associated with the
problem.

• Wherever possible use the original shipping carton and packing materials.

• Include a packing list and the Welch Allyn Return Material Authorization (RMA)
number.

It is recommended that all returned goods be insured. Claims for loss or damage to the
product must be initiated by the sender.

47

5

Disassembly and Repair Procedures

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Torque Specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

48 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Introduction

These procedures cover CP 200 and CP 100 electrocardiograph disassembly for sub­assemblies and board removal. Unless otherwise noted:

• The procedure is the same for both units.

• The assembly procedure is the reverse of the disassembly procedure.

Caution Perform all repair procedures at a static-protected station. Observe
recommended screw torque specifications, especially with screws that secure
directly into plastic standoffs.

WARNING The battery can deliver currents sufficient to cause serious personal
injury and to damage the electrocardiograph. When opening the
electrocardiograph for any reason, always remove and disconnect the battery
immediately, before proceeding with disassembly.

Screws

Caution To avoid mismatching screws and holes, keep the screws for each
piece with the piece as you remove modules, circuit assemblies, and other
components.

Torque Specs

The Following are recommended torque specs for all screws and hex nuts..

Table 6. Torque Specifications s

Qty Location Part Number Type Torque (English) Torque (Metric)

1 Paper Drive Gear 700091 Set Screw 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
4 Paper Cover Latch 711776 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
2 Drive Motor 700140 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
1 Drive Motor Gear 700091 Set Screw 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
3 Gear Box Assembly 711776 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
2 Paper Sensor Board 711776 Machine 3.5 +/- .25 i lbf-in 395 + /- 28 mN-m
2 Print head mount 700118 Shoulder Screw 4 +/- .25 lbf-in 452 +/- 28 mN-m
1 Ground to Shoulder Screw 106137-1 Hex nut 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
3 Paper Guide 711776 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
2 Ground Plug 102-0001 Hex Nut 16 +/- .25 lbf-in 1.81+/- .028 N-m
4 Power Supply 106124-4 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
5 Main PCB 106124-4 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
4 LCD Assembly / Bracket 106140-3 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
2 Inverter Board 200076-1 Thread-Forming 1 +/- .25 lbf-in 113 +/- 28 mN-m
5 Function Key Board 106124-4 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
13 QWERTY Keyboard 106124-13 Thread-Forming 1 +/- .25 lbf-in 113 +/- 28 mN-m
4 Printer Assembly 703247 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
8 Housing 703247 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m
2 Battery Cover 703247 Machine 3.5 +/- .25 lbf-in 395 + /- 28 mN-m

Service Manual CP 100 and CP 200 Electrocardiograph 49

Disassembly Procedures

Opening the Unit

WARNING Disconnect ALL power from the unit before repairing or
disassembling unit. Unplug the power cord and disconnect the battery at the
fuse in the battery compartment. See Replacing the Battery or Fuse (page 58)

Procedure Figure 31. Removing the Screws

1. Place unit on a clean, static mat.

2. Turn the unit up-side-down

3. Remove the 8 screws around the outside
rim of the unit. SeeFigure 31.

Screws

4. Using both hands, hold the upper case and
lower case of the unit together, turn the
unit upright.

5. Slowly lift the upper case, and disconnect
the ribbon cable from the upper case.

6. Lift off the top cover. See Figure 32.

Figure 32. Disconnecting the Ribbon Cable

Upper Case

Ribbon Cable

Lower Case

50 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Replacing the Printer Assembly

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Open the paper door and remove all paper
in the paper tray.

3. Insert a flat blade screwdriver into the slit
opening located on the side of the auxiliary
paper cover. Figure 33.

4. Apply outward pressure on the screwdriver
while pressing upward on the side of the
cover. Repeat process for the other side of
the cover. Lift the cover out of unit.

5. Remove the 4 screws in the bottom of the
printer tray. See Figure 34.

Figure 33. Inserting a Flat blade Screwdriver

Auxiliary Paper Cover

Slit Openings

Figure 34. Removing the Screws in the Paper Tray

4 Screws

AAMIV1V2V3V4V5V6RALARLLL

IEC C1C2C3C4C5C6R L N F

Select to end

Change settings as desired

LL

LA

V6

V5

V4

Select

RL

Rhythm ECG

R4

ECG

Select

Print

VerifyECG quality

V3

Select

DONE

V2

VI

Enter Patient Data

Select

Automatic ECG

Hold down for 1 second

Stat ECGStat ECG

Quick Step Operating Instructions

Service Manual CP 100 and CP 200 Electrocardiograph 51

Procedure

6. Slide the paper tray cover until it locks into
place before lifting the paper tray assembly.

7. Slowly lift the paper tray assembly and
remove the connections. See Figure 35

Reassembly Note

1. Keep the black printhead harness wires
behind the tabs on the auxiliary tray cover as
you place the cover into the assembly.

Figure 35. Lifting the Paper Tray Assembly

Printhead
Harness

Connections

Figure 36.

Tab s

Paper Tray
Assembly

Ground

2. When pressing the auxiliary paper cover into
place, listen for two distinct clicks when the
tabs lock into place.

Printhead Harness Wires

52 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Replacing the Paper Tray Cover

Procedure

1. Open the unit using the Disassembly

Procedures (page 49) directions.

2. Next, remove the paper tray cover. See

Replacing the Printer Assembly (page 50).

3. Slide the paper tray cover out until it stops.
See Figure 37.

4. Turn paper tray assembly up-side-down.

5. Remove the 3 screws holding the paper
guide. See Figure 38.

Figure 37. Sliding the Paper Tray Cover

Paper Tray Cover

LL

RL

LA

R4

ECG

Print

V3

DONE

V2

V6

VI

V5

V4

Figure 38. Bottom of the Paper Tray Assembly

Bottom of paper tray cover

AAMI V1 V2 V3 V4 V5 V6 RA LA RL LL

IEC C1C2C3C4C5C6RL N F

Select to end

Change settings as desired

Select

Rhythm ECG

Select

VerifyECG quality

Select

Enter Patient Data

Select

Automatic ECG

Hold down for 1 second

Stat ECGStatECG

Quick Step Operating Instructions

Screws holding paper guide

Service Manual CP 100 and CP 200 Electrocardiograph 53

Procedure

6. Turn the paper tray assembly upright.

7. Slide the paper tray cover in half way until
the paper guide drops into the paper tray.

8. Slide the paper tray cover out to remove it.

Figure 39.

Figure 39. Removing the Paper Tray Cover

Direction to Slide Paper Tray Cover to

V

3

V

4

V

5

V

6

R

A

L

A

R

L

L

Printhead

Paper Guide

L

LL

L

A

V

6

V

5

V

4

Direction to Slide Tray Cover to
Drop Paper Guide into the Tray.

C

3

C

4

C

5

C

6

R

L

N

F

to end

settings as desired

R

L

R

4

E

C

G

Print

G

quality

V

3

D

O

N

E

V

2

V

I

for 1

second

Operating

Instructions

down

A

A

M

I

V

1

V

2

IE

C

C

1

C

2

Select

Change

S

elect

Rhythm

E

CG

S

elect

Verify EC

Select

Enter Patient Data

Select

Automatic ECG

Hold

Stat ECGStat ECG

Q

uick

Step

Reassembly Note

1. Slide the paper tray cover half way into the
paper tray assembly.

2. Place the paper guide under the roller on the
paper tray cover.

3. While holding the paper guide in place, slide
the paper tray cover out until it hits the stop.

4. Turn the paper assembly up-side-down.

5. Replace the 3 screws in the holes located in
the bottom of the paper tray assembly. See

Figure 38.

54 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Replacing the Platen Roller

Procedure

Figure 40. Platen Roller

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Remove printer assembly using the

Replacing the Printer Assembly (page 50)

directions.

3. Remove the paper tray cover using the

Replacing the Paper Tray Cover (page 52)

directions.

To remove the platen roller

4. Loosen the set screw using a T5 Torx on the
drive gear and slide the drive gear off the
platen roller shaft.

5. Remove the retaining ring from both ends of
the platen roller.

6. Lift the platen roller shaft out of the paper
tray cover on the end opposite the drive
gear.

7. Slide the roller out.

Bearings

Spring

Retaining Ring

Drive Gear

Set Screw

Spacers

Paper Tray Cover

IEC

A

AM

I

V1

V2

V3

V4

V5

V6

R
A

LA RL L

L

Rhythm ECG

Select

Change settings as desired

Select

Select

Print

E
CG

R
4

R
L

LL

LA

C
1

C2

C
3

C
4

C
5

C6

to end

R

L

N

F

Verify ECG quality

Automatic ECG

Stat ECGStatECG

Select

Hold down

for 1 second

Quick Step Operating Instructions

Select

Enter Patient Data

DO

N
E

V3

V2

V
I

V

V

V4

6

5

Bearings

Platen Roller

Spacers

Retaining Ring

Place the bearings in this side first for ease of
assembly.

Reassemble Note

First, place the hardware into the side opposite
the drive gear for ease of assembly.

Service Manual CP 100 and CP 200 Electrocardiograph 55

Replacing the Printhead

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Remove printer assembly using the

Replacing the Printer Assembly (page 50)

directions.

3. Lift the printhead spring (metal rod behind
printhead assembly) out of unit. See

Figure 41.

4. Slide and lift out the printhead assembly.
See Figure 42.

Figure 41. Lifting the Printhead Spring

Printhead Spring

Figure 42. Sliding and Lifting Out Printhead
Assembly

Rotate Direction

Slide Directions

Connections

Printhead Assembly

Connections

56 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Procedure

5. Disconnect the paper detector harness
from the back of the printhead assembly.
See Figure 43

6. Disconnect the ground connection using a
¼” nut driver. See Figure 43

7. Remove the 2 shoulder screws from the
opposite end of the printhead using a 3/16”
nut driver.

8. Remove the 2 screws holding the Que
sensor Assembly. See Figure 43.

9. Carefully remove the printhead connectors
from both ends of the printhead. Figure 42
on page 55.

Figure 43. Disconnecting Paper Detector Harness
and Ground Connections

Ground Connection

Screws holding the Que
Sensor Assembly

Paper Detector Harness

Note

The printhead does not come with the Antistatic brushes. Order the Antistatic
brushes separately. See “Field Replaceable Parts” on page 69

Service Manual CP 100 and CP 200 Electrocardiograph 57

Replacing the Stepper Motor and Gear Box

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Remove printer assembly using the

Replacing the Printer Assembly (page 50)

directions.

3. Open the paper tray cover about half way.

4. Turn paper tray assembly up-side-down.

5. Remove the 3 screws to remove the gear
box and stepper motor. See Figure 44

6. Lift out the gear box and stepper motor.

Replacing the Stepper Motor

Procedure

Figure 44. Bottom of the Printer Assembly

Screws

1. Remove the 2 screw holding the motor.
See Figure 45.

2. Remove the motor.

Figure 45. Removing the Stepper Motor

Stepper Motor

Screws

58 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Replacing the Battery or Fuse

Procedure

1. Turn the electrocardiograph up-side-down.

2. Unscrew and remove the battery door. See

Figure 46.

3. Lift out the battery. See Figure 47.

Figure 46. Removing the Battery Door

Battery door

Figure 47. Lifting Out the Battery

Battery

4. Inspect the fuse. See Figure 48.

• If the “Z” wire is intact, go to Step 5.

• If the “Z” wire is broken or dark,
replace the fuse. See “Replacing the

Battery (DC) Fuse” on page 60.

Figure 48. Battery Fuse Plugged In

Fuse

Service Manual CP 100 and CP 200 Electrocardiograph 59

Procedure

5. Unplug the two battery connectors. See

Figure 49.

• You may need to pull hard. Use pliers

gently if necessary.

6. Connect a new battery by matching
connector sizes.

Do not force connectors to mismatch.

7. Place the battery into the battery
compartment. Replace the battery door
and screws. Turn the electrocardiograph
right-side-up.

It turns on automatically and displays a
prompt to enter date and time.

8. Reset the unit after you replace the battery.
See Battery Accuracy Test (page 31) for
directions.

9. Enter the date and time.

The electrocardiograph is ready to use.

Figure 49. Battery Connectors

Battery
connectors

10. Discard the old battery appropriately.

The battery is a sealed, lead-acid battery and must be recycled or
disposed of properly according to national or local regulations.

60 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Replacing the Battery (DC) Fuse

If the battery (DC) fuse requires replacing, as described in “Replacing the Battery or Fuse”
on page 58. For fuse value, see “Fuses” on page 77.

Procedure

1. Remove and discard the fuse. See

Figure 50.

You may need to pull hard. Use pliers
gently if necessary.

2. Connect a new fuse. It goes in either way.

3. Go to Step 7 on page 59.

Figure 50. Battery Fuse Remove

Service Manual CP 100 and CP 200 Electrocardiograph 61

Replacing the Main Board

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Remove printer assembly using the

Replacing the Printer Assembly (page 50)

directions.

3. Disconnect the locking connection for the
power supply and the battery.

4. Remove the ribbon cable that attaches the
top case.

5. Remove the 5 self taping screws holding
the board into place. See Figure 51.

6. Carefully lift and slide the board toward the
power supply.

Figure 51. Removing the Main Board

Connection

Ribbon Cable

Locking Connection

Screws

Power
Supply

62 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Replacing the Power Supply

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Remove printer assembly using the

Replacing the Printer Assembly (page 50)

directions.

3. Disconnect connections from the power
supply to main board. See Figure 52.

4. Disconnect Ground wire and AC input
connections. See Figure 52.

5. Remove the 4 screws holding the power
supply in place.

6. Lift out the power supply.

Figure 52. Replacing the Power Supply

Connection

Power Supply

Ground and AC Connections

Service Manual CP 100 and CP 200 Electrocardiograph 63

Replacing the IEC (AC input) Connector

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Remove printer assembly using the

Replacing the Printer Assembly (page 50)

directions.

3. Disconnect connections from the back of
the IEC connector.

4. Press in locking devices located on each
side of the IEC connector.

5. While pressing in locking devices, apply
pressure out on the connector.

Note Do one side at a time.

6. After the locking devices are released, pull
the connector out of the housing. See

Figure 53.

Figure 53. IEC (AC input) Connector

Housing

IEC
Connector

64 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Replacing the LCD Inverter and LCD Assembly (CP 200)

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Disconnect cable between the Inverter
board and keyboard.

3. Remove the 2 T4 torx screws holding the
LCD inverter in place. See Figure 54.

4. Disconnect the cable from the inverter to
LCD backlight. See Figure 54.

5. Disconnect the flat cable from the LCD at
the keyboard. See Figure 54.

6. Remove the 4 phillips screws in each
corner of the LCD. See Figure 54

7. Remove the LCD.

Figure 54. CP 200 Top Cover

Inverter
Board

T4 Torx
Screws

Phillips Screws

LCD

Assembly

Flat Cable from
the LCD to
Keyboard

Service Manual CP 100 and CP 200 Electrocardiograph 65

Replacing the Function Keypad Assembly (CP 200)

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Disconnect the cables to the LCD and the
Function Keyboard. See Figure 56.

3. Remove the 5 screws holding the Function
Keypad Assembly. See Figure 58.

4. Gently lift out the Function Keypad
Assembly.

Figure 55. Replacing the Keypad Assembly

LCD Assembly

Cable connection LCD
the and Function
Keypad

Phillips Screws

66 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Replacing the Keyboard Assembly (CP 200)

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Disconnect the ground and the flat data
cable to the LCD and the flat data cable,
the cables to the Inverter, to the Keypad
Assembly.

3. Remove the 13 screws holding in the
Keyboard Assembly.

4. Gently lift out the Keyboard Assembly.

Reassembly Note

1. Install and tighten the 3 screws first
(shown in Figure 56) to align the keyboard.

DO NOT tighten the screws past the
specified torque.

2. Install remaining 10 screws using the
specified torque.

Figure 56. Replacing the Keyboard Assembly (CP 200)

LCD Assembly

Cable between Inverter
board and Keyboard

Flat Cable from the
LCD to Keyboard

Keypad
Assembly

Screws

Service Manual CP 100 and CP 200 Electrocardiograph 67

Replacing the LCD Assembly (CP 100)

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Disconnect the flat cable from the
keyboard. See Figure 57.

3. Remove the 4 screws securing the LCD
bracket. See Figure 57.

4. Gently lift out the LCD bracket.

5. Gently lift out the LCD assemby.

Figure 57. CP 100 Top Cover

LCD Assembly

LCD Bracket

Screws

Flat Cable

68 Disassembly and Repair Procedures Welch Allyn CP 100 and CP 200 Electrocardiograph

Replacing the Keyboard Assembly (CP 100)

Procedure

1. Open unit using the Disassembly

Procedures (page 49) directions.

2. Disconnect the flat cable from the
keyboard.

3. Remove the 13 screws holding in the
keyboard assembly.

4. Gently lift out the keyboard assembly.

Reassembly Note

1. Install and tighten the 3 screws first
(shown in Figure 58) to align the keyboard.

DO NOT tighten the screws past the
specified torque.

2. Install remaining 10 screws using the
specified torque.

Figure 58. Replacing the Keyboard Assembly (CP 100)

Flat Cable

Screws

69

6

Field Replaceable Parts

Introduction

The field replaceable parts list is intended as a guide for ordering parts for both the CP 100
and CP 200 Electrocardiographs along with the optional Cart. The list is organized, by
assembly, with all parts to that assembly listed including quantity per assembly.

Note

“For information about any Welch Allyn product, please call Welch Allyn Technical
Support:” on page ii. or www.welchAllyn.com/medical/support.

Hardware pieces such as screws, washers, bearings, nuts, setscrews, and some
labels may only be available in kits. However, all such pieces are listed with sizes,
in the description, to allow for possible purchase from your local hardware store.

70 Field Replaceable Parts Welch Allyn CP 100 and CP 200 Electrocardiograph

Field Replacement Parts

Table 7. MISCELLANEOUS PARTS LISTING

Part Number Description Quantity

703247 SCREW, 6-32 X 375LG PHPS, V (Housing) 8

76400 POWER CORD, DETACH.(DOM/JAPAN) 1

76402 POWER CORD, DETACH.(EUROPEAN) 1

76404 POWER CORD, DETACH.(UK) 1

76406 POWER CORD, DETACH.(AUSTRALIA) 1

761076-8 POWER CORD, DETACH.(SWISS) 1

761076-9 POWER CORD, DETACH.(SOUTH AMERICA) 1

761076-20 POWER CORD, DETACH.(SOUTH AFRICA) 1

701586 DUST COVER, CP 100/CP 200 1

701557 DIRECTIONS FOR USE MANUAL, CP 200, English (All languages available on CD) 1

401151 CP 200 PRODUCT INFORMATION CD 1

703228 DIRECTIONS FOR USE, CP 100, ENGLISH (Other languages available on CD) 1

401150 CP 100 PRODUCT INFORMATION CD 1

401126 ECG PATIENT LEAD CABLE, AHA, CP 100/200 1

401127 ECG PATIENT LEAD CABLE, IEC, CP 100/200 1

401128 ECG PATIENT LEAD CABLE, IEC, Vac, CP 100/200 1

401129 LEADWIRE SET(10),AHA,BANANA,CP 100/200, W/COMB 1

401122 LEADWIRE SET(10),IEC,BANANA,CP 100/200, W/COMB 1

401123 LEADWIRE SET(10),AHA,PINCH,CP 100/200, W/COMB 1

401124 LEADWIRE SET(10),IEC,PINCH,CP 100/200, W/COMB 1

703401 CABLE COMB (LEAD SEPERATER) 1

Service Manual Field Replaceable Parts 71

Table 8. ASSEMBLY, BASE CP 100/200

Part Number Description Quantity

703511 HOUSING, CP 100/CP 200 BASE 1

101-0038 GROUND PLUG, 6/25 1

620198 FOOT 4

106124-4 SCREW 4-20.250 PAN PHILLIPS 9

236732 IEC CONNECTOR 1

236733 FUSE DRAWER 1

703611 EOS MVLT80-1001-S77 PWR SUPPLY 1

703774 FERRITE, FLAT CABLE SNAP-ITS 1

104-0007 WASHER, FLAT 1

104-0008 WASHER LOCK SERRATED 4

102-0001 NUT HEX 2

401370 BATTERY ASSEMBLY, CP 100/CP 200 1

704064 BATTERY FUSE, ZEUS PC5-6 1

700015 BATTERY DOOR, CP 100/CP 200 1

703247 PHPS 6-32 X.375 (Battery Door) 2

704068 HARNESS, INCOMING PWR (W001) 1

704067 HARNESS, GROUND POWER SUPPLY (W003) 1

700157 HARNESS, PWR SUPPLY TO MAIN PCB (W002) 1

704221 HARNESS, BATTERY (W008) 1

700152 HARNESS, MAIN PCB TO KEYBOARD (W014) 1

455508 LABEL, PROTECTIVE EARTH GROUND 3

703922 FUSE, 250V, 5 X 20MM, TIME LAG 2

Table 9. ASSEMBLY PRINTER, CP 100/200

Part Number Description Quantity

700007 AUX PAPER COVER, CP 100/CP 200 1

700012 PAPER TRAY , CP 100/CP 200 1

703258 SCREW M3 X 6 PHP FH, V 2

700117 SPRING, PRINT HEAD 1

700118 SHOULDER SCREW M3 X .5 2

703246 SCREW, M3 X 0.5, PAN PHILLIPS 8

106137-1 NUT,4-40X.250 HEX,KEPS EXTLOCK 1

700160 HARNESS, GROUND PRINT HEAD (W005) 1

700161 HARNESS, PAPER DETECTION (W006) 1

700162 HARNESS, PRINT HEAD (W007) 1

72 Field Replaceable Parts Welch Allyn CP 100 and CP 200 Electrocardiograph

Table 9. ASSEMBLY PRINTER, CP 100/200

Part Number Description Quantity

700159 BRUSH ANTI-STATIC 90mm FLEXIBLE 2

700089 PRINT HEAD ROHM, CP 100/CP 200 1

700001 PRINT HEAD MOUNT, CP 100/CP 200 1

700002 PAPER GUIDE, CP 100/CP 200 1

400044 ASSY, GEAR BOX, CP 100/CP 200 1

700087 STEPPER, MINEBEA, PM351-048-USG9 1

400053 ASSY, QUE SENSOR (PCBA) 1

Table 10. ASSEMBLY, PAPER TRAY COVER, CP 100/200

Part Number Description Quantity

700016 PAPER TRAY COVER, CP 100/CP 200 1

700092 PLATEN ROLLER 1

700088 GEAR, PINION 22 TOOTH, CP 100/CP 200 1

700093 SHAFT, PRINTER DOOR LATCH 1

700094 BEARING, .187ID X .375 OD X .125 4

700095 SPACER, .187ID X .25 OD X .063 3

700098 SPRING, PRINTER DOOR 1

700004 RETAINER, PRINTER DOOR LATCH SHAFT 2

700099 CURVED WASHER, .187 ID X .25 OD X .006 1

700100 SPACER, .187ID X .25 OD X .125 (SPRING) 1

703246 SCREW, M3 X 0.5, PAN PHILLIPS 4

700091 SCREW, SET CUP POINT , M2.5 X 4mm LONG 1

700017 LATCH, RELEASE 1

700156 RETAINING RING 3/16 2

700126 LABEL, QUICK GUIDE, ENGLISH, CP 200 1

703875 LABEL, QUICK GUIDE, DANISH, CP 200 1

703873 LABEL, QUICK GUIDE, DUTCH, CP 200 1

703858 LABEL, QUICK GUIDE, FRENCH CP 200 1

703859 LABEL, QUICK GUIDE, GERMAN, CP 200 1

703871 LABEL, QUICK GUIDE, ITALIAN, CP 200 1

703872 LABEL, QUICK GUIDE, NORWEGIAN, CP 200 1

703876 LABEL, QUICK GUIDE, PORTUGUESE, CP 200 1

703870 LABEL, QUICK GUIDE, SPANISH, CP 200 1

703874 LABEL, QUICK GUIDE, SWISS, CP 200 1

701774 LABEL, QUICK GUIDE, ENGLISH, CP 100 1

703856 LABEL, QUICK GUIDE, DANISH, CP 100 1

Service Manual Field Replaceable Parts 73

Table 10. ASSEMBLY, PAPER TRAY COVER, CP 100/200

Part Number Description Quantity

703854 LABEL, QUICK GUIDE, DUTCH, CP 100 1

703847 LABEL, QUICK GUIDE, FRENCH CP 100 1

703850 LABEL, QUICK GUIDE, GERMAN, CP 100 1

703852 LABEL, QUICK GUIDE, ITALIAN, CP 100 1

703853 LABEL, QUICK GUIDE, NORWEGIAN, CP 100 1

703857 LABEL, QUICK GUIDE, PORTUGUESE, CP 100 1

703851 LABEL, QUICK GUIDE, SPANISH, CP 100 1

703855 LABEL, QUICK GUIDE, SWISS, CP 100 1

Table 11. ASSEMBLY, TOP COVER, CP 200

Part Number Description Quantity

704343 HOUSING, CP 200, TOP 1

700122 DISPLAY, LCD, COLOR - 320 x 240 , 5.7" N, CP 200 1

700121 GLARE SCREEN, CP 200 1

401462 ASSY, QWERTY KEYBOARD, CP 200 1

401461 ASSY, FUNCTION KEYPAD, CP 200 1

703680 SCREW,TORX#2 x 1/4 PAN PLASTITE 13

106124-4 SCREW 4-20.250 PAN PHILLIPS 5

700119 INVERTER, LCD 1

200076-1 SCREW 0-40 .187 PAN TORX 2

106140-3 SCREW 4-40 .250 PAN PHILLIPS STEEL ZINC 4

704232 HARNESS, QWERTY BOARD TO LCD (W013) 1

700079 HARNESS, KEY BOARD TO KEYPAD BOARD(W012) 1

700151 HARNESS, INVERTER SUPPLY (W009) 1

700730 HARNESS, GRND LCD (W010) 1

700124 LABEL, QWERTY CP 200 1

703108 LABEL, FKP, ENGLISH 1

703152 LABEL, FKP, DANISH 1

703150 LABEL, FKP, DUTCH 1

703105 LABEL, FKP, FRENCH 1

701032 LABEL, FKP, GERMAN 1

703834 LABEL, FKP, ITIALIAN 1

703109 LABEL, FKP, NORWEGIAN 1

703153 LABEL, FKP, PORTUGUESE 1

703107 LABEL, FKP, SPANISH 1

703151 LABEL, FKP, SWISS 1

74 Field Replaceable Parts Welch Allyn CP 100 and CP 200 Electrocardiograph

Table 12. OPTION, SPIROMETER CP 200

Part Number Description Quantity

703411 DIRECTIONS FOR USE MANUAL, CP 200, SPIRO 1

100627 PRESSURE TUBING, CPWS, CP 200, 2m 1

703480 SYRINGE,CALIBRATION,3L,CPWS,CP 200,SPIRO 1

Table 13. ASSEMBLY, TOP COVER, CP 100

Part Number Description Quantity

704342 HOUSING, CP 100 TOP 1

701588 LCD POWERTIP 3.9, CP 100 1

701035 3.9 LCD BRACKET, CP 100 1

701521 GLARE SCREEN, LIMITED, CP 100 1

401463 ASSY, QWERTY KEYBOARD, CP 100 1

106124-4 SCREW 4-20.250 PAN PHILLIPS 4

700124 LABEL, QWERTY, CP 100/CP 200 1

703680 SCREW,TORX#2 x 1/4 PAN PLASTITE 13

Table 14. CART CP 100/CP 200

Part Number Description Quantity

703129 CAST BASE 1

703133 COLUMN EXTRUSION 1

703131 COLUMN ADAPTER 1

703138 SHELF, CART 1

703139 TOP PLATE, CART 1

703443 BASKET, CART 2

703167 SCREW, 1/4-20 x 1.50 PHP 2

703160 ADAPTER, PLASTIC CASTER, OFFICE 4

703143 CASTER, 5 IN TWIN WHEEL, OFFICE 4

703144 CASTER, FIXED 5 IN BRAKE, HOSPITAL 2

703142 CASTER, 5 IN, NO BRAKE, HOSPITAL 2

703168 SCREW, 1/4-20 x .75 FHP THREAD CUTTING 4

106137-4 NUT,10-32 EXTLOCK 10

703169 NUT, 1/4-20 EXTERNAL LOCK WASHER 2

106100-6 PHPS 6-32 X.375 6

703136 HANDLE, CART 4

703179 ROLL PIN, 3/16 x .875 STL 8

703135 CORD WRAP 1

Service Manual Field Replaceable Parts 75

Table 14. CART CP 100/CP 200

Part Number Description Quantity

703410 SCREW, 10-32 x .312 PHP 2

703130 AUX TRAY 1

703462 NUT, T, 1/-4-20 2

703461 TRILOBULAR KNOB 1/4-20 X .5 2

703454 QUICK CONNECT, FLEX ARM 2

703145 FLEX ARM 1

703137 HOLSTER, FRONT END 1

106100-56 SCREW, 1/4-20 X 1.00 PAN HEAD PHILLIPS 1

106106-4 WASHER, LOCK, EXT 1/4 1

703510 THUMB SCREWS, PKG 1

76 Field Replaceable Parts Welch Allyn CP 100 and CP 200 Electrocardiograph

77

A

Specifications

.

Item Specification

Dimensions

Weight 11.6 lb (5.3 kg)

Keyboard type Elastomer keypad with complete alphanumeric keys

Paper type 8.25 x 11 inches (21 x 28 cm), Z-fold thermal paper, 200 sheets

16.2 in
(41.1 cm)

6.2 in
(15.7 cm)

15.6 in
(39.7 cm)

16.2 in
(41.1 cm)

6.2 in
(15.7 cm)

15.6 in
(39.7 cm)

Soft-key menu and dedicated function keys (CP 200 Only)

Thermal printer (internal) Computer-controlled dot array, 8 dots/mm

Thermal paper speeds 10, 25, 50 mm/s

Gain settings:

Auto ECGs
Rhythm ECGs

Report print formats:

Auto ECGs
Rhythm ECGs
Average cycles

ECG storage Up to 50 ECGs (CP 200 Only)

Frequency range 0.3 to 150 Hz

Digital sampling rate > 1,000 samples/second/channel

Pacemaker detection ANSI/AAMI EC11

Power requirement Universal AC power supply 100/240 V ~, 50/60 Hz ~, 2.2 A maximum

Fuses

AC
DC (battery fuse)

5, 10, 20 mm/mV, AUTO
5, 10, 20 mm/mV

3x4, 3x4+ 1R, 3x4 +3R, 6x2, 12x1, 6x2 50 mm/s, 6x2 Ext.
3, 6, or 12 leads at a time (CP 200) 3 leads at a time (CP 100)
3x4 50 mm/s + 3R, 6x2 50 mm/s + 6R

Time-delay type, 2 amp 250 V rating, Littlefuse 0215002 or equivalent.
Fast-acting type, 10 amp 32 V rating, Bussman ATC-10 or equivalent.

78 Appendix A Specifications Welch Allyn CP 100 and CP 200 Electrocardiograph

Item (Continued) Specification (Continued)

Lead configurations Standard, Cabrera

Rechargeable battery Lead acid gel, 6 volt, 5 AH

Prints up to 100 continuous ECGs per charge
12-hour recharging

Filters 0.5 Hz high-performance baseline filter

Safety, EMC, and regulatory
compliance

Standard connectivity Com port, SD memory card slot (for use with cards ≥ 64 MB)

Connectivity with electronic medical
records

Electrodes Rigorously tested for conductivity, adhesion, and hypoallergenic qualities, and

Cables and wires Meet or exceed IEC 60601

Environmental operating conditions:

Temperature
Relative humidity
Altitude

Environmental storage conditions:

Temperature
Relative humidity
Altitude

35 Hz muscle-tremor filter
AC-interference filter 50 Hz or 60 Hz

ANSI/AAMI EC11* UL60601-1
CAN/CSA C22.2 No. 601.1 IEC/EN 60601-1
CAN/CSA C22.2 No. 601.1.1 IEC/EN 60601-1-1
CAN/CSA C22.2 No. 601.1.2 IEC/EN 60601-1-2
CAN/CSA C22.2 No. 601.1.4 IEC/EN 60601-1-4
CAN/CSA C22.2 No. 601.2.25 IEC/EN 60601-2-25
AS/NZS CISPR 11

Supported through the Welch Allyn CardioPerfect workstation software

exceed all AAMI standards

+10° C to +40° C (+50° F to +104° F)
15 – 95% noncondensing
700 – 1060 hPa

-20° C to +49° C (-4° F to +120° F)
15 – 95% noncondensing (30 – 70% for printing)
500 – 1060 hPa

Protection against electric shock Class I, internally powered

Typ e CF

Protection against ingress of water,
per IEC 60529:

Electrocardiograph
Spirometry Component

Mode of operation Continuous

*Per AAMI EC11:1991/(R)2001 Diagnostic Electrocardiographic Devices, Section 3.1.2.1 Disclosure of cautionary
information/ performance characteristics paragraph c) Accuracy of input signal reproduction, the manufacturer shall
disclose the methods used to establish overall system error and frequency response. Welch Allyn has used methods A & D,
as prescribed in section 3.2.7.2 and 4.2.7.2 of this same standard, to verify overall system error and frequency response.
Because of the sampling characteristics and the asynchronism between sample rate and signal rate, digital ECG systems
such as the CP 100 and CP 200 may produce a noticeable modulating effect from one cycle to the next, particularly in
pediatric recordings. This phenomenon is not physiologic.

Specifications are subject to change without notice.

IPXØ
IPXØ

EMC Guidance and Manufacturer’s

79

B

Table 15. Electromagnetic Emissions

The electrocardiograph is intended for use in the electromagnetic environment specified below. The customer or user of the electrocardiograph
should assure that it is used in such an environment.

Emissions Test Compliance Electromagnetic Environment - Guidance

RF emissions

CISPR 11

RF emissions

CISPR 11

Harmonic emissions

IEC 61000-3-2

Voltage fluctuations/
flicker emissions

IEC 61000-3-3

Declarations

Group 1 The electrocardiograph uses RF energy only for its internal function. Therefore, its RF

emissions are very low and are not likely to cause any interference in nearby electronic
equipment.

Class A The electrocardiograph is suitable for use in all establishments other than domestic and

those directly connected to the public low-voltage power supply network that supplies
buildings used for domestic purposes.

Class A

Complies

80 Appendix B EMC Guidance and Manufacturer’s Declarations Welch Allyn CP 100 and CP 200 Electrocardiograph

Table 16. Electromagnetic Immunity

The electrocardiograph is intended for use in the electromagnetic environment specified below. The customer or user of the electrocardiograph
should assure that it is used in such an environment.

Immunity Test IEC 60601

Electrostatic discharge
(ESD)

IEC 61000-4-2

Electrical fast transient/
burst

IEC 61000-4-4

Surge

IEC 61000-4-5

Voltage dips, short
interruptions, and
voltage variations on
power supply input
lines.

IEC 61000-4-11

Power frequency
(50/60Hz)
magnetic field

Test Level

± 6 kV contact

± 8 kV air

±2 kV for power supply
lines

±1 kV for input/output
lines

±1 kV differential mode

±2 kV common mode

>95% dip in 0.5 cycle

60% dip in 5 cycles

30% dip for 25 cycles

>95% dip in 5 seconds

3 A/m 3 A/m Power frequency magnetic fields should be at levels

Compliance Level Electromagnetic Environment - Guidance

± 6 kV contact

± 8 kV air

±2 kV for power supply
lines

Not applicable

±1 kV differential mode

±2 kV common mode

>95% dip in 0.5 cycle

60% dip in 5 cycles

30% dip for 25 cycles

>95% dip in 5 seconds

Floors should be wood, concrete, or ceramic tile. If floors are
covered with synthetic material, the relative humidity should
be at least 30%.

Mains power quality should be that of a typical commercial or
hospital environment.

Mains power quality should be that of a typical commercial or
hospital environment.

Mains power quality should be that of a typical commercial or
hospital environment. If the user of the electrocardiograph
requires continued operation during power mains
interruptions, it is recommended that the electrocardiograph
be powered from an uninterruptible power supply or battery.

characteristic of a typical location in a typical commercial or
hospital environment.

IEC 61000-4-8

Service Manual Appendix B EMC Guidance and Manufacturer’s Declarations 81

Table 17. Electromagnetic Immunity

The electrocardiograph is intended for use in the electromagnetic environment specified below. The customer or user of the electrocardiograph
should assure that it is used in such an environment.

Immunity Test IEC 60601

Test Level

Conducted RF
IEC 61000-4-6

Radiated RF
IEC 61000-4-3

3 Vrms
150 kHz to 80 MHz

3 V/m
80 MHz to 2.5 GHz

Compliance

Electromagnetic Environment - Guidance

Level

Portable and mobile RF communications equipment should be used no closer
to any part of the electrocardiograph, including cables, than the
recommended separation distance calculated from the equation applicable
to the frequency of the transmitter.

Recommended separation distance

3 Vrms d = (1.17)

3 V/m d = (1.17) 80 MHz to 800 MHz

d = (2.33) 800 MHz to 2.5 GHz

P

P

P

where P is the maximum output power rating of the transmitter in watts (W)
according to the transmitter manufacturer and d is the recommended
separation distance in metres (m).

Field strengths from fixed RF transmitters, as determined by an
electromagnetic site survey,
each frequency range.

a

should be less than the compliance level in

b

Interference may occur in the vicinity of equipment marked with the
following symbol:

Note 1: At 80 MHz and 800 MHz, the higher frequency range applies.

Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures,
objects, and people.

a

Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio,
AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due
to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the
electrocardiograph is used exceeds the applicable RF compliance level above, the electrocardiograph should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the
electrocardiograph.

b

Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.

82 Appendix B EMC Guidance and Manufacturer’s Declarations Welch Allyn CP 100 and CP 200 Electrocardiograph

Table 18. Recommended Separation Distances Between Portable and Mobile RF Communications Equipment
and the Electrocardiograph

The electrocardiograph is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer
or user of the electrocardiograph can help prevent electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the electrocardiograph as recommended below, according to the maximum output
power of the communications equipment.

Separation Distance According to Frequency of Transmitter (m)

Rated Max. Output

Power of Transmitter

(W)

0.01 0.117 0.117 0.233

0.1 0.37 0.37 0.74

1 1.17 1.17 2.33

10 3.70 3.70 7.37

100 11.70 11.70 23.30

For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can be estimated
using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W)
according to the transmitter manufacturer.

Note 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.

Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures,
objects, and people.

150 kHz to 80 MHz

d = (1.17)

P P P

80 MHz to 800 MHz

d = (1.17)

800 MHz to 2.5 GHz

d = (2.33)

83

C

Software Updates

Caution Do not unplug or turn unit off during this process. It will cause the
system to be inoperable.

Note

.

Procedure Figure 59. CP 200 “Software Upgrade” Screen

1. Power ON unit.

2. Insert the SD memory card into the slot on the unit.

3. Press Menu key.

4. Choose Main Menu > Systems Settings> Device Info >

Upgrade Software

The Upgrade Software screen appears. See Figure 59.

5. Press the “Upgrade” Softkey button.
The upgrade takes approximately 60 seconds to
complete.The unit will reboot.

You cannot uninstall updates made to the unit.

Upgrade Software

Currently Installed

X.X.X

On Memory Card

X.X.X

Upgrade

6. Reset the Date and Time on the unit after it reboots. See the
Directions for Use manual.

Verify Update

1. Choose Main Menu > System Settings > Device Info >
Print Setting.

2. Compare product version to what was installed.

84 Appendix C Software Updates Welch Allyn CP 100 and CP 200 Electrocardiograph

85

D

Interconnect Diagrams

CP 200 Interconnect Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

CP 100 Interconnect Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

86 Appendix D Interconnect Diagrams Welch Allyn CP 100 and CP 200 Electrocardiograph

CP 200 Interconnect Diagram

Service Manual Appendix D Interconnect Diagrams 87

CP 100 Interconnect Diagram

88 Appendix D Interconnect Diagrams Welch Allyn CP 100 and CP 200 Electrocardiograph

PO Box 220, Skaneateles Falls, NY 13153-0220 USA

800 535 6663 www.welchallyn.com

Material Number.704340 Rev. D