HP M1705B, M1772A, M1771A, M1770A, PageWriter 300 Service Manual

PageWriter 100, 200 and 300 Series Cardiographs
M1770A, M1771A, and M1772A
Mobile Cart M1705B

Service Manual

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Notice

WARNING

0Notice

The information in this document is subj ect to change without notice.

Hewlett-Packard makes no warranty of any kind with regard to this material, includ ing,
but not limited to, the implied warranties of merchantability and fitness for a particular
purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental
or consequential damages in conn ection with the furnishing, performance, or use of this
material.

This document contains or refers to proprietary information which is protected by
copyright. All rights are reserved. No part of this document may be photocopied,
reproduced, or translated to another language without the prior written consent of Hewlett­Packard Company.

Responsibility of the Manufacturer

Hewlett-Packard only considers itself responsible for any effects on safety, reliability and
performance of the equipment if all the following are true:

• Assembly operations, extensions, re-adjustments, modifications or repairs are done by
persons authorized by Hewlett-Packard.

• The electrical installation of the relevant room complies with the IEC or national require­ments.

• The instrument is used according to the instructions for use presented in this manual.

As with all electronic equipment, radio frequency interference between this
cardiograph and any existing RF transmitting or receiving equipment at the
installation site, including electrosurgical equipment, should be evaluated
carefully and any limitations noted before the equipment is placed in service.
Monitoring during electrosurgery should not be attempted and monitoring
electrodes should be removed from the patient to preclude the possibility of
burns. Radio frequency generation from electrosurgical equipment and close
proximity transmitters may seriously degrade cardiograph performance. Hewlett­Packard assumes no liability for failures resulting from RF interference between
HP medical electronics and any radio frequency generating equipment at levels
exceeding those established by applicable standards.

ii

Notice

CAUTION

CAUTION

Like all electronic devices, this cardiograph is susceptible to electrostatic discharge
(ESD). Electrostatic discharge typically occurs when electrostatic energy is transferred to
the patient, the electrodes, or the cardiograph. ESD may result in ECG artifact that may
appear as narrow spikes on the cardiograph display or on the printed report. When ESD

occurs, the cardiograph’s ECG interpretation may be inconsistent with the physician’s
interpretation.

ESD discharges to exposed metal on the rear of the cardiograph can occasionally cause an
error message to appear on the cardiograph display. The cardiograph returns to normal
operation after turning the power off, then on again.

The data transmission cable must have a suppression device attached to assure the
cardiograph’s compliance with the European Radiated Emissions Standard found in
CISPR 11. If your data transmission cable does not include a suppression device,
compliance can be achieved by attaching one of the following suppression devices to the
cable, near the cardiograph:

part number 0443164251 Fair-Rite Products Corporat ion

P. O. Box J
One Commercial Row
Wallkill, Ne w York 12589
telephone: [phone]
FAX: [phone]

or
Euro-Schaffner, S. A.

1 B Avenue de Suisse - BP 16
68311 Illzach Cedex, France
telephone: [phone]
FAX: [phone]

part number 28B2025-0A0 Steward

East 36th Street
P. O. Box 510
Chattanooga, TN 37401
telephone: [phone]
FAX: [phone]

or
Steward EMC, S.A.

Rue Fritz-Couvoisier 40
Ch-2300 La Chaux-de-Fonds
Switzerland
telephone: [phone]
Fax: [phone]

This is to certify that this equipment is in accordance with the Radio Interference
Requirements of the EMC Directive.

iii

Notice

Warranty

Hewlett-Packard warrants this medical product against defects in materials and
workmanship for a period of three years in certain geographics, or one year with onsite
support.

If Hewlett-Packard receives notice of such defects during the warranty period, Hewlett­Packard shall, at its option, either repair or replace hardware products which prove to be
defective.

Hewlett-Packard software and firmware products that are designated by Hewlett-Packard
for use with a hardware product, when properly installed on that hardware product, are
warranted not to fail to execute their programming instructions due to defect s during the
warranty period. Hewlett-Packard shall repair or replace software media and firmware that
do not execute their programming instructions due to such defects. Hewlett-Packard does
not warrant that the operation of the software, firmware, or hardware shall be
uninterrupted or error free.

If Hewlett-Packard is unable, within a reasonable time, to repair or replace any product to
a condition as warranted, Buyer shall be entitled to a refund of the purchase upon return of
the product to Hewlett-Packard.

Limitation of Warranty

The foregoing warranty shall not apply to defects resulting from any of the following:

1. Improper or inadequate maintenance by Buyer.

2. Buyer-supplied software or interfacing.

3. Unauthorized modification or misuse.

4. Operation outside of the environmental specifications for the product.

5. Improper site preparation and maintenance.

THE WARRANTY SET FORTH ABOVE IS EXCLUSIVE AND NO OTHER
WARRANTY, WHETHER WRITTEN OR ORAL, IS EXPRESSED OR IMPLIED.
HEWLETT-PACKARD SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

iv

Notice

Printing History

October 1994 Edition 1
May 1996 Edition 2
October 1998 Edition 3

v

Safety Summary

0Safety Summary

Safety Symbols Marked on the Cardiograph

The following symbols are used on the cardiograph or the cart:

Caution - See operating instructions

Alternating current.

Meets IEC type CF leakage current requirements and is defibrillator
protected. (Isolated ECG input.)

Equipotential (identifies independent protective earth conductor to the
cardiograph).

Fuse.

Indicates power control for cardiograph.

Hz Indicates operating frequency in cycles per second.

The maximum weight that the cart can hold

Displays the configuration menu on the PageWriter
200/200/300pi.

Please see Chapter 2, “Performance Verification and Maintenance,” for safety
requirements that apply to the cardiograph.

vi

Conventions Used in This Manual

WARNING

CAUTION

NOTE

0Conventions Used in This Manual

Warning statements describe conditions or actions that can result in personal
injury or loss of life.

Caution statements describe conditions or actions that can result in damage to the
equipment or software.

Notes contain additional information on cardiograph usage.

TEXT represents the labels that appear on the display.

.H\

Softkey

represents keys on the key panel.

represents the temporary key labels that appear on the display.

vii

Preface

0Preface

This manual contains service information for the Hewlett-Packard M1 770A pageWriter
300pi, PageWriter 200i, M1771A PageWriter 200, and M1772A PageWriter 100
cardiographs. The information and procedures in this manual apply to all models unless
otherwise specified.

This manual is organized as follows:

• Chapter 1 — I n troduction. Contains a general description of the cardiographs, lists of
technical specifications, and lists of accessories and options.

• Chapter 2 — Performance Verification and Maintenance. Explains how to check the
cardiograph’s performance using built-in self-tests, and lists maintenance procedures and
safety requirements that apply to the cardiograph.

• Chapter 3 — Theory of Operation. Provides an overview of how the cardiograph

works and describes the operation of the m a jor subassemblies.

• Chapter 4 — Troubleshooting. Contains procedures and error codes to aid the service
person in localizing faults to a replaceable subassembly.

• Chapter 5 — Removal and Replacement. Contains procedures for removing and
replacing each of the cardiograph’s major subassemblies.

• Chapter 6 — Parts List. Lists part numbers for the cardiog raph’s replaceable parts, an d
provides assembly drawings.

• Appendix A — Connector Pin Assign ment s. Identifies and defines the signals

assigned to the subassembly interconnections.

• Index.

viii

Contents

Notice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii

Responsibility of the Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Limitation of Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

Safety Symbols Marked on the Cardiograph. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

Conventions Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

1. Introduction

PageWriter 100, 200, 200i, and 300pi Series Cardiographs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

M1705B Cart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Transmission and Storage, Option #A05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Inquiries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Specification Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Sampling Characteristics of Cardiograph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

PageWriter 100, 200, 200i, and 300pi Cardiographs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Country/Region Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Standard Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

2. Performance Verification and Maintenance

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Visual Inspection and Power On Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Extended Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Internal Circuitry Testing of PageWriter 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Internal Circuitry Testing of PageWriter 200/200i/300pi . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

How to Read the Extended Self-Test Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-11

Display Test (PageWriter 200/200i/300pi only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Indicator Light Test (PageWriter 100 only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Printer Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Keyboard Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -13

PageWriter 200/200i/300pi Keyboard Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

PageWriter 100 Keyboard Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

ECG Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Changing the Default Operating Language (200/200i/300pi Only) . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Resetting the Cardiograph to the Factory Default State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Resetting the PageWriter 200/200i/300pi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Resetting the PageWriter 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Cleaning the Cardiograph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Cleaning the Keyboard Overlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -19

Cleaning the Digital Array Printhead and Paper Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

ix

Cleaning the Electrodes and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

Caring for the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

Storing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

Safety Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

PageWriter 100, 200/200i, and 300pi Series Performance Verification Matrix . . . . . . . . . . . . . . . . 2-24

3. Theory of Operation

Operational Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

ECG Data Path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Power-on and Power-off Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Power-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Power-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Circuit Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

The Patient Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

CPU Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

CPU/System Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

System Gate Array/Real-Time Crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

ECG Front End Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Interrupt Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

DMA for ECG Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

DMA for LCD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

System Reset Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Watch-dog Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Real-Time Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

DRAM RAS and CAS Generation and Refresh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

NVRAM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Keyboard Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Display Control for PageWriter 20 and 300 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

NVRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

ECG Front End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

DRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

ROM-1 and ROM-2 Address Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Printer Gate Array/SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Motor Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Analog/Digital Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Thermal Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

System Expansion Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Voltage Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Primary Line Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Power Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Rectifier/Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Switch-Mode Battery Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

VPRINT Boost Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Switched +6V Boost Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

5V Linear Regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

ECG Front End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Isolation Power Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Front End Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Opto-Isolators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

x

Integrated Front End Circuits/Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Defibrillator Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Storage and Transmission (Option #A05 0nly) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

M177XA Expansion Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Gate Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

ROM-X1, ROM-X2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14

Flash1, Flash2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

VPROG Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Dual UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

18.432 MHz Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 -15

RS232 Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Serial Port Connectors 1 and 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

4. Troubleshooting

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Maintenance Philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Test Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Patient Cable Test Tool (M1770-87908) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Front End and RS-232 Port Test Tool (M1770-87909, Rev. B) . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Testing the Instrument Signal Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Testing the Cardiograph’s RS-232 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

The Error and Event Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Using Extended Self-test in Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

How the PageWriter 100 Communicates Error Codes and Messages . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

PageWriter 100 Error Code Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

PageWriter 100 Error Message Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Troubleshooting Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Testing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

5. Removal and Replacement

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Tool Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

The Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Removing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

The Keyboard Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Removing the Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Removing the Keyboard Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Removing the Keyboard Flexible Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Removing the Keyboard Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

Replacing the Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

The Top Cover Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Opening and Removing the Top Cover Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Replacing the Top Cover Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

The Printer Door Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Removing the Printer Door Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Replacing the Printer Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

The Printer Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Removing the Printer Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Replacing the Printer Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12

xi

The Printhead Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Removing the Printhead Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Removing the Optical Paper Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Replacing the Printhead Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

The Control Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

Removing the Control Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

Replacing the Control Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

The Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Removing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Replacing the Power Supply Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

The Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20

The Internal Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

Replacing the Power Supply Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

Replacing the Capacitor Board Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

Replacing the Printer Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

The Storage and Transmission Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

Removing the Storage and Transmission Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

6. Parts Lists

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Calling for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

7. Connector Pin Assignments

CPU Assembly Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

xii

Introduction

WARNING

NOTE

This chapter introduces you to the M1770A PageWriter 200i/300pi, M1771A PageWriter
200, and M1772A PageWriter 100 cardiographs and lists their technical specifications.

These cardiographs are only to be serviced by HP qualified personnel.

Safe and effective use of medical instrumentatio n requires periodic inspection and
preventive maintenance. Perform the preventive maintenance procedures in Chapter 2 of

this manual at required intervals to ensure satisfactory instrument performance.

The cardiographs use a thermal printhead to record waveforms and label the ECG report.
The paper supplied with the cardiographs is a thermal paper designed to work with this
printhead and with the photo detector used to advancing the paper.

Hewlett-Packard guarantees the performance of the cardiographs only when used with
Hewlett-Packard supplies, accessories, and paper that meet or exceed Hewlett-Packard
specifications.

0PageWriter 100, 200, 200i, and 300pi Series Cardiographs

The M1770A PageWriter 200i/300pi is Hewlett-Packard’s economical, interpretive

cardiograph. The M1771A PageWriter 200 is the economical, non-interpretive
cardiograph. The M1772A PageWriter 100 is the most economical, non-interpretive
cardiograph. The cardiogr aph con tains the user controls, the p rinter, and all the pr ocessing
circuitry. All models use the same enclosure. The M1705B cart is designed for these
cardiographs. Figure 1-1 shows the M1770A mounted on the cart. Option #A05 provides
transmission and storage capability for the M1770A and M1771A. The StressWriter
option provides capability for communication between a PageWriter 100/200/200i/300pi
cardiograph and a StressWrit er system.

1-1

PageWriter 100, 200, 200i, and 300pi Series Cardiographs

Figure 1-1 M1770A/M1771A PageWriter 300pi/200i/200 Cardiograph.

The PageWriter 100, 200, and 300 family of cardiographs print ECGs in Auto and
Manual formats. All PageWriter cardiographs use a continuous feed, high-resolution,
thermal array printer. This produces electrocardiograms on standard- size paper that can
be included in patient records without cutting or mounting. ECG reports clearly show the
ECG waveforms. The PageWriter 200 and 300 series cardiographs also annotate records
with patient information and ECG measurements. The Pa geWriter 200i and 300pi also
includes ECG interpretation for both adult and pediatric patients.

From a service standpoint, the PageWriter 100, 200, and 300 family of cardiographs are
similar except for two major hardware differences:

• The M1770A has additional firmware for ECG measurements and interpretation.

• The M1771A has additional firmware for ECG measurements.

• The M1772A keypanel does not have an LCD preview dis play and uses operation al keys
instead of alphanumeric keys for user input.

All other model differences are found in the cardiograph’s software.

The PageWriter 100, 200, and 300 family of cardiographs is designed for low-cost, long­term reliability. The modular design makes extensive use of VLSI and gate array
technology, resulting in a minimum number of subassemblies. The modular approach
means less down-time for the user, since replacing subassemblies allows faster field
repairs. The internal self-test efficiently identifies faulty subassemblies , further speeding
the repair process.

1-2

Inquiries

M1705B Cart

The optional M1705B Cart provides mobility for the PageWriter 100, 200, and 300 family
of cardiographs. The large wheels make the cart easy to move, yet steady. Slots in the

cardiograph’s feet and a thumbscrew secure the cardiograph to the cart rails. The tray
directly below the cardiograph provides stor age for the user’s gu ide. Storage for the power
cable is built in. Other built-in cable retainers hold the patient data cable ou t of the way.
Two compartmented trays provide storage for spare patient electrodes and patient cables,
additional thermal paper, and consumable supplies.

Transmission and Storage, Option #A05

Transmission and storage features are available for the M1770A and M1771A with
purchase of Option #A05. Up to thirty Auto ECGs can be stored in the cardiograph’s
internal flash memory. Stored ECGs can be recalled later for editing, re-analyzing,
printing, or transmission to another PageWriter 200/200i/300pi equip ped with Option
#A05, a PageWriter XLi cardiograph, a TraceMaster ECG Management System, or
facsimile machine. Manual ECGs cannot be transmitted or stored.

1Inquiries

Refer any questions or comments regarding these instruments to the nearest Hewlett­Packard Sales/Service Office or to one of Hewlett-Packard’s Service Dispatch Centers.
Always identify the instrument by model number and serial number in all correspond ence.
Telephone numbers for Service Dispatch Centers and Sales/Service Offices are listed in
Chapter 6, “Parts List.”

1Specification Data

The following tables list the technical specifications for the cardiographs and the mobile
cart. Specifications are the same for all models except as noted

Table 1-1 Physical Specifications

Parameter Specification

Dimensions (h × w × l)

× 15 in × 17 in (11. 5 cm × 39.2 cm × 43.7 cm)

cardiograph
cart

Weight
cardiograph

cart

4 in

× 17 in × 33 in (91.4 cm × 43.5 cm × 84.8 cm)

36 in

18.7 lbs. (8.5 kg) or l es s (includes battery , 200 sheets of paper, pa ti ent cable, and power cord)

38 lbs. (17.24 kg)

Chemical resistance,
cleaners

Withstands the following: isopro py l alcohol (except patient cabl e ), mild soap and water, chlorine
bleach and wate r (30 ml/l of water).

1-3

Specification Data

Table 1-2 Electrical Specifications

Parameter Specification

Resolution
ECG (internal)
display

5 µV
128 row pixels by 24 0 column pixels

display sweep sp eed
Input impedance greater than 2.5 MΩ@ 10 Hz, typically greater than 100MΩ @ DC

Gain accuracy

Input bias less than 40 nA for input leadwire, les s t han 500 nA for Right L eg output

Common mode rejection

Defibrillator reco ve ry

Crosstalk rejection

Sample rate 4.096M samples per second per input le adwire (unfiltere d)
DC offset tolerance

Noise

Standardizing voltage

50/60 Hz notch filter 50/60 Hz AC line rejectio n filters are always active.
Pacemaker pulse display > 0.2 mV indication for pa ce pulses between 0. 5 and 2 ms dur ation at amplit ude

1

Meets or exceeds AAMI EC11-1991 standard for Diagnostic Electrocardiographic Devi ces.

2

Meets or exceeds AAMI EC11-1991 standard for Diagnostic Electrocardiographic Devices. Tested according to AAMI

23.1 mm/sec

±5% of input signal or ±40 µV, whichever is greater

leadwire

110 dB or greater with A A MI test circuit

System recovery 8 seconds after 360 joule discharge, no damage

Less than 2% chan nel crosstalk

≥ ±300 mVdc with less tha n 5% gain change
≤ 30 µV peak-to-peak RTI

1 mV

2 to 250 mV

± 1%

1

1

1

± 5% for 100 mSec ± 5 mSec

1

1

2

1

1

1

1

EC11-1991 test method 4.2.7.1.

Sampling Characteristics of Cardiograph

Physiological factors such as breathing can cause variation in amplitudes of heart beats,
independent of the heart rate. In addition, sampled systems (as opposed to continuous
systems) may show changes in the apparent height of the R-wave when sampling of the R­wave occurs slightly off-peak. Because the sampling rate and the heart rate are
asynchronous, the time between the peak and an adjacent sample can vary from one QRS
complex to the next. This results in a slight variation o f dis playe d QRS amplitude. This
effect is more pronounced wi th narrower si gnals, more commonly found in some pediat ric
electrocardiograms and in pacemaker pulses. The M177XA family of cardiographs
minimizes this effect by:

• using an integrating-type A/D converter

• sampling all leadwires simultaneously

• oversampling the signals

• processing the oversampled si gnals with appropriate digital si gnal process ing techniques

1-4

Specification Data

Table 1-3 ECG to Paper Specifications

Parameter Specification

Frequency response of PageWriter

High Pass Low Pass
200/200i/300pi
(-3dB bandwidth)

Auto ECG

Manual ECG

0.05 Hz

0.15 Hz

0.5 Hz

0.05 Hz

0.15 Hz

0.5 Hz

1
1

3

150 Hz

100 Hz

40 Hz

150 Hz

100 Hz

40 Hz

1
2

3

2

Frequency response of PageWriter 100
Auto ECG
Manual ECG

1

3

<3 dB down at (u ser selectable):

3 dB down at (user selectable):

<

0.15-150 Hz or 0.15-40 Hz

0.05-150 Hz or 0.05-40 Hz

ECG resolution on paper
voltage axis
time axis

Approximately 8 dots/mm (200 dots/in)
Approximately 20 dots/mm (500 dots/in) at 25mm/sec and slower
Approximately 10 dots/mm (250 dots/in) at 50mm/sec

Recorder speed 5, 10, 25, and 50 mm/sec +

1.5%

4

ECG visibility with pace pulse Meets or exceed AMMI EC11-1991 standard for Diagnostic Electrocardio-

graphic Devices

1

Bold entries mean meets or exceeds AAMI E C 11-1991 standard for Diagnostic Electrocardiographic Devices. Meets

frequency response standard 3.2.7.2 using methods A, D, and E with auto report filter settings at 0.05-150 Hz or

0.15-150 Hz.

2

-4 dB @ 100 Hz

3

Bold entries mean meets or exceeds AAMI E C 11-1991 standard for Diagnostic Electrocardiographic Devices. Meets

frequency response standard 3.2.7.2 using methods A, D, and E with manual report filter settings at 0.05-150 Hz.

4

Bold entries mean meets or exceeds AAMI E C 11-1991 standard for Diagnostic Electrocardiographic Devices.

1-5

Specification Data

Table 1-4 Power Supply and Battery Specifications

Parameter Specification

AC line frequenc y
115 V setting
230 V setting
AC input power rating

Battery voltage 6 V DC, 6.5 Ah
Battery recharge time with unit off

(battery full y discharged)
to 90% capacity
to full capacity

Battery capacity
Auto
continuous rhythm (Manual mode)

Battery life
AC and battery operation
battery only operation

Low battery warning At least 2 Auto ECGs or at least 2 minutes of Man-

Table 1-5 Safety Specifications

Parameter Specification
ECG leads source curr ent to ground Less than 10 µA RMS

50 and 60 Hz (nominal)

90–132 Vac
198–264 Vac
50 VA

7 hours typical
16 hours typical

40 ECGs
40 minutes

Typically 24 month s
Typically 14–16 months

ual ECG is allowed after the Low Battery indica­tion is given.

1

ECG leads sink current
120 Vac, 60 Hz

240 Vac, 50 Hz

1
2

Ground wire integrity

Shunting of defibrillator ene rg y

Operator safety during defibrillation

1

Meets or exceeds AAMI EC11-1991 st andard for Diagnostic Electrocardiographic

Less than 20 µA RMS with patient cable
Less than 50 µA RMS with patient cable

Less than 100 mΩ @ 25 A AC

1

< 10%

< 100 µC

1

1

Devices.

2

Meets or exceeds IEC 601-2-25 International Standard for Medical Electrical Equipment,

Part 2 for Electrocardiographs.

1-6

Specification Data

Table 1-6 Environmental Specifications

Parameter Specification
Temperature

operating
storage

Humidity
operating
storage

Pressure (altitude)
operating
storage

Table 1-7 Miscellaneous Specifications

Parameter Specification
Real time clock accuracy

10 to 40

° C

50

° to 104° F (10° to 40° C)
° to 122° F (0° to 50° C)

32

15 to 80% RH, non-condensing
15 to 90% RH, non-condensing

15,000 ft. (4600 m) for 2 hours
15,000 ft. (4600 m)

Less than 3 minutes deviation per month.

Printhead life Typically 100,000 pa ges

Table 1-8 Storage and Transmission Specifications (Option #A05 only)

Parameter Specification

Auto ECG storage capacity 30 ECGs
Transmission Protocols

DT

SCP
Modem command interfaces

Data modem
FAX modem

Modem protocols
Modulation
Error correction
Compression
FAX modulation

1

Described in the European Committee for Standardization, Standard Communications

Protocol - Computer - Assisted Electrocardiography. (CEN/TC 251).

Data transmission standard used betwee n HP PageWriter cardio­graphs and HP TraceMaster ECG Management System s

Standard Communications Protocol

Hayes standard AT command set
EIA/TIA-578 Serv i ce Cl ass 1

V.34
V.42
V.42 bis
V.17

1

1-7

Options and Accessories

1Options and Accessories

PageWriter 100, 200, 200i, and 300pi Cardiographs

These tables list the options and accessories available for the PageWriter 100, 200, and
300 family of cardiographs.

Country/Re gion Options

Each country/region option includes the appropriate power cord, voltage, printer, patient
cable, and language. See Table 1-9, which shows th e configuration o f each coun try/region
option.

1-8

Options and Accessories

NOTE

Table 1-9 Country/Region Option Configurations

Country/

Option

ABA North America English English A AHA 120 903–US Disposable
ABB Europe En gl ish English English A4 IEC 220 902–Europe None
ABC French Ca nada French French A AHA 1 20 903–US Disposable
ABD Germany German German A4 IEC 220 902–Europe None
ABE Spain Spanish Spanish A4 IEC 220 902–Euro pe None

ABF France French French A4 IEC 220 902–Europe None
ABG Australia English English A4 AHA 240 901–Australia Welsh
ABH Netherlands Dutch Dutch A4 IEC 220 9 02–Europe None
ABK Intercon

ABM Latin America Spanish Spanish A AHA 120 903–US Welsh
ABN Norwegian Norwe-

ABS Sweden Swedish Swedish A4 IEC 220 902-Europe None
ABU United Kingdom English English A4 IEC 240 900 –U K None

Region Labels

English English A AHA 120 903–US Welsh

English, Taiwan

gian

User
Manuals Printer

Norwe-

gian

A4 IEC 230 902-Europe None

AHA/

1

IEC Volts Power Cord

2

Electrodes

ABX Finland Finnish Finnish A4 IEC 220 902-Eu rope None
ABZ Italy Italian Italian A4 IEC 220 902–Europe None

AB2 China Chinese Chinese A4 IEC 220 922–Chi na Welsh

AB4 Singapore English Englis h A4 AHA 240 900–UK Welsh

AC6 S. Korea English English A AHA 220 902-Europe Welsh

ACJ India English English A4 IEC 240 917-SA Welsh

AKM China Chinese English A4 IEC 220 922-China Welsh

ACQ South Africa English English A4 IEC 220 9 17–SA None
AKV South America Spanis h Spanish A A H A 220 902–Europe Welsh

1

In Table 1-9 an “A” in the Printer column refers to 8.5 x 11-in. paper; “A4” refers to 210 x 29 7-mm paper

2

See Table 1-11 for HP part numbers

Switzerland should order the desired language (German, French, Italian, or English) and
the Swiss power cord (HP 8120-2296).

1-9

Options and Accessories

Table 1-10 PageWriter 300pi, 200/200i and 100 Series Documentation Part Numbers

Document Title Language Part Number

PageWriter 100 Cardiograph User’s Gui de
(M1772A)

PageWriter 200/20 0i Car diograph Users’s
Guide (M1770A, M1771A with Serial # Prefix
CNA, CNB, CNC, 3807A or earlier version)

English M1772-91900

French M1772-91901
German M1772-91902
Dutch M1772-91903
Spanish M17 72-91904
Italian M1772-91905
Finnish M1772-91910
Chinese M1772-91908
English M1772-91900

French M1770-91901
German M1770-91902
Dutch M1770-91903
Spanish M1770-91904
Italian M1770-91905

PageWriter 300p i Ca rdiograph Users’ s G uide
(M1770A with Serial # Prefix CND)

Swedish M1770-91906
Finnish M1770-91910
English M1770-91930

French M1770-91931
German M1770-91932
Dutch M1770-91933
Spanish M1770-91934
Italian M1770-91935
Swedish M1770-91936
Norwegian M1770-91938
Finnish M1770-91939

1-10

Options and Accessories

Table 1-10 PageWriter 300pi, 200/200i and 100 Series Documentation Part Numbers

PageWriter 300p i Pred ictive I nstr uments Quic k
Reference Guide (M1770A with Seria l # Pre fix
CND)

Interpretive Ph ysician’s Guide (M1770A) English M1700-92 908

English M1770-92800

French M1770-92801
German M1770-92802
Dutch M1770-92803
Spanish M1770-92804
Italian M1770-92805
Swedish M1770-92806
Norwegian M1770-92808
Finnish M1770-92809

French M1700-92918
German M1700-92928
Dutch M1700-92938
Spanish M17 00- 92948
Italian M1700-92958

Interpretive Physician’s Guide - Addendum
(M1770A)

Predictiv e Instruments Physic ian’s Guid e
(M1770A with Serial # Prefix CND)

English M1700-90700

French M1700-90701
German M1700-90702
Dutch M1700-90703
Spanish M1700-90704
Italian M1700-90705
English M1792-93900

French M1792-93901
German M1792-93902
Dutch M1792-93903
Spanish M1792-93904
Italian M1792-93905

1-11

Options and Accessories

Table 1-11 Power Cord Part Numbers

Power Cord Key HP Part Number

900 8120-1703
901 8120-4464
902 8120-1692
903 8120-5213
917 8120-4600
922 8120-8377

Table 1-12 Options

Option Description

A05 Adds storage and transmission capability
M2488A-#A70, A71, A72 StressWriter system includes Pa geWriter cardiograph
M2488A-#C70 StressWriter system includes interface card for PageWriter

cardiograph

Standard Accessories

Accessories included are based on model number and localization.

• 200 sheets of z-fold paper

-English paper p/n M2481A

-Metric paper p/n M2483A

• PageWriter 300pi HP M1770A Cardiograph User’s Guide (PageWriter 300pi)

• PageWriter 200/200i HP M1771A/M1770A Cardiograph User’s Guide (PageWriter

200/200i)

• Hewlett Packard Interpretive Cardio graph Physician’s Guide (PageWriter 200i/300pi
only)

• PageWriter 100 HP M1772A Cardiograph User’s Guide (PageWriter 100 only)

• Using the HP PageWriter 200/200i Cardiograph Operator Training Video (PageWriter
200/200i, also for use with PageWriter 300pi)

• Using the HP PageWriter 100 Cardiograph Operator Training Video (PageWriter 100
only)

1-12

Performance Verification and Maintenance

NOTE

1Introduction

This chapter describes how to verify the cardiograph’s performance, explains preventive
maintenance, presents patient safety informatio n, and provides a performance verification
checklist.

1Performance Verification

Several procedures make up performance verification: visual inspection of the
cardiograph exterior, execution of Extended Self-test, visual examination of an ECG
recorded from an ECG patient simulator, and system safety tests using a safety analyzer.

A Performance Verification matrix which appears at the end of this section specifies the
tests and inspections which must be performed follo wing servicing of the PageWriter
cardiographs. The Performance Verification test results must be recorded on

Customer Service order records

Make copies of the matrix. Fill out a copy each time the cardiograph is tested. Attach the
printer test output, and simulator ECG trace to the completed matrix and file with the
cardiograph’s permanent maintenance record.

If any of the performance verification tests fail, refer to Chapter 4, Troubleshooting.

2-1

Performance Verification

Visual Inspection and Power On Self Test

Before beginning the inspectio n, press the key to put the cardiograph in

2Q6WDQGE\

Standby mode, and unplug the power cord from the wall outlet. Inspect the cardiograph
for the following:

• Worn or damaged power cord

• Loose or missing hardware

• Mechanical damage

• Evidence of liquid spill

• Worn printer drive gear

• Worn printer roller

• Corroded or damaged reusable electrodes, if present

• Damaged patient cable

• Dirt/paper residue on the thermal printhead

• Frayed or damaged wiring

Replace any damaged or missing items, and clean the printhead and patient electrodes as
necessary. Cleaning instructions are listed under “Preventive Maintenance” later in this
chapter. Connect the cardiograph to AC power. Be sure that the AC indicator comes on.
Turn the cardiograph On and observe that the display turns on (PageWriter
200/200i/300pi) or that the LED’s flash on (PageWriter 100).

Extended Self-test

The cardiograph’s extended self-test checks each major subassembly. The extended self­test consists of two sections: the testing of internal circu itry and the testing of printer,
display, keyboard, and modem capabilities.

To begin the extended self-test, press and hold both the and keys while
turning on the cardiograph with the key.

2Q6WDQGE\

To stop or exit extended self-test, you must press to place the cardiograph

$XWR 0DQXDO

2Q6WDQGE\

in Standby.

Internal Circuitry Testing of PageWriter 100

These tests are performed on the internal circuitry:

•Memory

• Gate Array

• Front-End Interface

• Serial Interface

Each of these tests is described in detail later in this chapter.

When the internal circuitry test of the PageWriter 100 is performed, the LEDs show which
test is being performed. The following table shows which LED is associated with each
test.

2-2

Performance Verification

Table 2-1 PageWriter 100 Test LED’s

Test Number Test Name LED(s) lit on Page-

Writer 100

1 ROM-1 5 mm/mV OK
2 ROM-2 10 mm/mV Normally fails for 100.
3 ROM-X1 20 mm/mV OK for A#10.
4 ROM-X2 V Leads OK for A#10.
5 RAM Filter OK
6 NVRAM Auto OK
7 GA I II III Lead Group Will also flash all LEDs. OK
8 ECG FE aVR aVL aVF Lead Group OK

9 SIO II aVF V2 Lead Group OK for A#10.
A REMOTE V Leads For future use - normally fail s.
B MODEM 5 mm/sec OK for A#10, with modem or test tool

C FLASH1 10 mm/sec OK for A#10.
D FLASH2 25 mm/sec OK for A#10.

When the tests are completed, the results are also printed out in a pass/fail format
on the left-hand side of the first page of the test repor t.

Comments/Expected Results

attached

Table 2-2 Test Results Format

Test Passes Test Fails

Printed Result OK **

In some cases, a test failure halts the test/test printout and an error code indicating the

failure is flashed on the LED’s. See Chapter 4, “Troubleshooting,” for a list of self-test
failure codes and failure symptoms. The section “How the PageWriter 100 Communicates
Error Codes and Messages” in Chapter 4 describes how to read the LED’s.

2-3

Performance Verification

Internal Circuitry Testing of PageWriter 200/200i/300pi

These tests are performed on the internal circuitry:

•Memory

• Gate Array

• Front-End Interface

• Serial Interface

Each test is described detail later in this chapter.

When testing the internal circuitry of the PageWriter 200/200i/300pi, the numbers 1
through 9 and the characters A through D are displayed one at a time beginning with
number 1. Each number represents a particular test. If the test fails, the character X is
placed after the test number, for example, 3X. The test descriptions below are listed in the
order the tests are performed.

Table 2-3 PageWriter 200/200i/300pi Test Numbers

Test Number Test Name Character Displayed on Page-

Writer 200/200i/300pi

1ROM-1 1 OK
2 RO M-2 2 Passes for 300pi, 200i, and 200 with

3 ROM-X1 3 Passes for Options #A05 an d #A10

4 ROM-X2 4 Passes for Options #A05 an d #A10

5RAM 5 OK
6 NVRAM 6 OK
7GA 7 OK
8ECG FE 8 OK
9 SIO 9 Passes for Options #A05 and #A10

A REMOTE A For future use - norm ally fails
B MODEM B Passes for Options #A05 and #A10

Comments

software revision A.05.0 6 or later.

only.

only.

only.

only, with modem or test tool

attached

C FLASH1 C Passes for Options #A05 and #A10

only

D FLASH2 D For future use - normal ly fails

2-4

Performance Verification

CAUTION

If your cardiograph is equipp ed with Option s #A05 or #A10, do not tu rn it off duri ng Test
C or D. If you turn off the cardiograph while Test C or D are in process, you could lose
stored ECGs, the Log of ECGs Stored, or the Log of ECGs Taken.

When the tests are completed, the results are printed out in a pass/fail format on the left­hand side of the first page of the test report.

Table 2-4 Test Results Format

Test Passes Test Fails

Printed Result OK **

In some cases, a test failure halts the test/test printout and an error code indicating the

failure appears on the display. See Chapter 4, “Troubleshooting,” for a list of self-test
failure codes and failure symptoms.

Memory Test

This test looks for failures in the following memory subsystems:

• Read-Only Memory (ROM)

• Random Access Memory (RAM)

• Non-Volatile Random Access Memory (NVRAM)

Read-Only M emory (tests 1-4) . The cardiograph is designed to have up to four ROMs
installed, two on the main control board and two on an option board. The Read-Only
Memory test reads the contents and performs a 32-bit cyclic redundancy check (CRC) of
each of the four ROM address spaces. The test of a ROM address space will fail if the
ROM module is faulty or is not present. The four ROM address spaces are identified on
the report as

•ROM-1

•ROM-2

•ROM-X1

•ROM-X2

Depending on the serial number and model of the unit you are servicing, the
corresponding ROM part numbers vary. Refer to tables 2-5, 2-6, 2-7, and 2-8 for the
correct ROM replacement part numbers.

2-5

Performance Verification

Table 2-5 ROM Replacement Part Numbers for PageWriter Cardiographs M1770, M1771A Serial Number

Prefix CNA, CNB, or CNC,3807A or earlier

Test ROM Part Number Language

ROM 1

ROM 2 U206 - Main CPU Board M1770-89521

ROM X1 U9 - Interface Board M2488-17901
ROM X2 U10 - Inte rf ace Board M 2488-17902

U205 - Main CPU Board M1770-89505

M1770-89521
M1770-89522
M1770-89523
M1770-89524
M1770-89525

English
French
German
Dutch
Spanish
Italian

Table 2-6 ROM Replacement Part Numbers for PageWriter Cardiographs M1770, M1771A Serial Number

Prefix CND

Test ROM Part Number Language

ROM 1
ROM 2

U205 - Main CPU Board M1770-89550

M1770-89551
M1770-89552
M1770-89553
M1770-89554
M1770-89555
M1770-89556
M1770-89558
M1770-89559

English
French
German
Dutch
Spanish
Italian
Swedish
Norwegian
Finnish

ROM X1 U9 - Interface Board M2488-17901
ROM X2 U10 - Inte rf ace Board M 2488-17902

2-6