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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October 22, 1998 3:00 pm DRAFT

Notice

Notice

The information in this document is subject to change without notice.

Hewlett-Packard makes no warranty of any kind with regard to this material, including, 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 connection 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 require-
	ments.
	• The instrument is used according to the instructions for use presented in this manual.
	As with all electronic	equipment, radio frequency interference between this
WARNING
	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. Hewlett-
	Packard 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

CAUTION

CAUTION

Notice

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 Corporation
		P. O. Box J
		One Commercial Row
		Wallkill, New 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 defects 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

Safety 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

WARNING

CAUTION

NOTE

Conventions Used in This Manual

Conventions 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\	represents keys on the key panel.
	represents the temporary key labels that appear on the display.
Softkey

vii

Preface

Preface

This manual contains service information for the Hewlett-Packard M1770A 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 — Introduction. 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 major 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 cardiograph’s replaceable parts, and provides assembly drawings.

•Appendix A — Connector Pin Assignments. 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

WARNING

NOTE

Introduction

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 instrumentation 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.

PageWriter 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 cardiograph contains the user controls, the printer, and all the processing 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 StressWriter 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 standardsize 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 PageWriter 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 display and uses operational 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 storage for the user’s guide. Storage for the power cable is built in. Other built-in cable retainers hold the patient data cable out 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 equipped with Option #A05, a PageWriter XLi cardiograph, a TraceMaster ECG Management System, or facsimile machine. Manual ECGs cannot be transmitted or stored.

Inquiries

	Refer any questions or comments regarding these instruments to the nearest Hewlett-
	Packard 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 correspondence.
	Telephone numbers for Service Dispatch Centers and Sales/Service Offices are listed in
	Chapter 6, “Parts List.”
	Specification 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)		4 in × 15 in × 17 in (11.5 cm × 39.2 cm × 43.7 cm)
cardiograph
cart		36 in × 17 in × 33 in (91.4 cm × 43.5 cm × 84.8 cm)
Weight
cardiograph		18.7 lbs. (8.5 kg) or less (includes battery, 200 sheets of paper, patient cable, and power cord)
cart		38 lbs. (17.24 kg)
Chemical resistance,		Withstands the following: isopropyl alcohol (except patient cable), mild soap and water, chlorine
cleaners		bleach and water (30 ml/l of water).

1-3

	Specification Data
Table 1-2	Electrical Specifications
Parameter		Specification
Resolution		5 μV
ECG (internal)
display		128 row pixels by 240 column pixels
display sweep speed		23.1 mm/sec ± 1%
Input impedance		greater than 2.5 MΩ@ 10 Hz, typically greater than 100MΩ @ DC1
Gain accuracy		±5% of input signal or ±40 μV, whichever is greater2
Input bias		less than 40 nA for input leadwire, less than 500 nA for Right Leg output
		leadwire1
Common mode rejection		110 dB or greater with AAMI test circuit1
Defibrillator recovery		System recovery 8 seconds after 360 joule discharge, no damage1
Crosstalk rejection		Less than 2% channel crosstalk1
Sample rate		4.096M samples per second per input leadwire (unfiltered)
DC offset tolerance		³ ±300 mVdc with less than 5% gain change1
Noise		£ 30 μV peak-to-peak RTI1
Standardizing voltage		1 mV ± 5% for 100 mSec ± 5 mSec1
50/60 Hz notch filter		50/60 Hz AC line rejection filters are always active.
Pacemaker pulse display		> 0.2 mV indication for pace pulses between 0.5 and 2 ms duration at amplitude
		2 to 250 mV1

1Meets or exceeds AAMI EC11-1991 standard for Diagnostic Electrocardiographic Devices.

2Meets or exceeds AAMI EC11-1991 standard for Diagnostic Electrocardiographic Devices. Tested according to AAMI 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 R- wave 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 of displayed QRS amplitude. This effect is more pronounced with narrower signals, more commonly found in some pediatric 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 signals with appropriate digital signal processing 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	0.05 Hz1	150 Hz1
	0.15 Hz1	100 Hz2
	0.5 Hz	40 Hz
Manual ECG	0.05 Hz3	150 Hz3
	0.15 Hz	100 Hz2
	0.5 Hz	40 Hz
Frequency response of PageWriter 100
Auto ECG1	<3 dB down at (user selectable):	0.15-150 Hz or 0.15-40 Hz
Manual ECG3	<3 dB down at (user selectable):	0.05-150 Hz or 0.05-40 Hz
ECG resolution on paper
voltage axis	Approximately 8 dots/mm (200 dots/in)
time axis	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

1Bold entries mean meets or exceeds AAMI EC11-1991 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

3Bold entries mean meets or exceeds AAMI EC11-1991 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.

4Bold entries mean meets or exceeds AAMI EC11-1991 standard for Diagnostic Electrocardiographic Devices.

1-5

Specification Data

Table 1-4	Power Supply and Battery Specifications
Parameter		Specification
AC line frequency		50 and 60 Hz (nominal)
115 V setting		90–132 Vac
230 V setting		198–264 Vac
AC input power rating		50 VA
Battery voltage		6 V DC, 6.5 Ah
Battery recharge time with unit off
(battery fully discharged)
to 90% capacity		7 hours typical
to full capacity		16 hours typical
Battery capacity
Auto		40 ECGs
continuous rhythm (Manual mode)		40 minutes
Battery life
AC and battery operation		Typically 24 months
battery only operation		Typically 14–16 months
Low battery warning		At least 2 Auto ECGs or at least 2 minutes of Man-
		ual ECG is allowed after the Low Battery indica-
		tion is given.

Table 1-5	Safety Specifications
	Parameter	Specification
	ECG leads source current to ground	Less than 10 μA RMS1
	ECG leads sink current
	120 Vac, 60 Hz1	Less than 20 μA RMS with patient cable
	240 Vac, 50 Hz2	Less than 50 μA RMS with patient cable
	Ground wire integrity	Less than 100 mΩ @ 25 A AC1
	Shunting of defibrillator energy	< 10%1
	Operator safety during defibrillation	< 100 μC1

1Meets or exceeds AAMI EC11-1991 standard for Diagnostic Electrocardiographic Devices.

2Meets 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	50° to 104° F (10° to 40° C)
	operating
	storage	32° to 122° F (0° to 50° C)
	Humidity
	operating	15 to 80% RH, non-condensing
	storage	15 to 90% RH, non-condensing
	Pressure (altitude)
	operating	15,000 ft. (4600 m) for 2 hours
	storage	15,000 ft. (4600 m)

Table 1-7	Miscellaneous Specifications
	Parameter	Specification
	Real time clock accuracy
	10 to 40° C	Less than 3 minutes deviation per month.
	Printhead life	Typically 100,000 pages

Table 1-8	Storage and Transmission Specifications (Option #A05 only)
	Parameter	Specification
	Auto ECG storage capacity	30 ECGs
	Transmission Protocols
	DT	Data transmission standard used between HP PageWriter cardio-
		graphs and HP TraceMaster ECG Management Systems
	SCP	Standard Communications Protocol1
	Modem command interfaces
	Data modem	Hayes standard AT command set
	FAX modem	EIA/TIA-578 Service Class 1
	Modem protocols
	Modulation	V.34
	Error correction	V.42
	Compression	V.42 bis
	FAX modulation	V.17

1Described in the European Committee for Standardization, Standard Communications Protocol - Computer - Assisted Electrocardiography. (CEN/TC 251).

1-7

Options and Accessories

Options 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/Region Options

Each country/region option includes the appropriate power cord, voltage, printer, patient cable, and language. See Table 1-9, which shows the configuration of each country/region option.

1-8

Options and Accessories

Table 1-9		Country/Region Option Configurations
	Country/			User	Printer1	AHA/		Power Cord2
Option	Region		Labels	Manuals		IEC	Volts		Electrodes
ABA	North America		English	English	A	AHA	120	903–US	Disposable
ABB	Europe English		English	English	A4	IEC	220	902–Europe	None
ABC	French Canada		French	French	A	AHA	120	903–US	Disposable
ABD	Germany		German	German	A4	IEC	220	902–Europe	None
ABE	Spain		Spanish	Spanish	A4	IEC	220	902–Europe	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	902–Europe	None
ABK	Intercon		English	English	A	AHA	120	903–US	Welsh
	English, Taiwan
ABM	Latin America		Spanish	Spanish	A	AHA	120	903–US	Welsh
ABN	Norwegian		Norwe-	Norwe-	A4	IEC	230	902-Europe	None
			gian	gian
ABS	Sweden		Swedish	Swedish	A4	IEC	220	902-Europe	None
ABU	United Kingdom		English	English	A4	IEC	240	900–UK	None
ABX	Finland		Finnish	Finnish	A4	IEC	220	902-Europe	None
ABZ	Italy		Italian	Italian	A4	IEC	220	902–Europe	None
AB2	China		Chinese	Chinese	A4	IEC	220	922–China	Welsh
AB4	Singapore		English	English	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	917–SA	None
AKV	South America		Spanish	Spanish	A	AHA	220	902–Europe	Welsh

1In Table 1-9 an “A” in the Printer column refers to 8.5 x 11-in. paper; “A4” refers to 210 x 297-mm paper

2See Table 1-11 for HP part numbers

	NOTE	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 Guide	English	M1772-91900
	(M1772A)
		French	M1772-91901
		German	M1772-91902
		Dutch	M1772-91903
		Spanish	M1772-91904
		Italian	M1772-91905
		Finnish	M1772-91910
		Chinese	M1772-91908
	PageWriter 200/200i Cardiograph Users’s	English	M1772-91900
	Guide (M1770A, M1771A with Serial # Prefix
	CNA, CNB, CNC, 3807A or earlier version)
		French	M1770-91901
		German	M1770-91902
		Dutch	M1770-91903
		Spanish	M1770-91904
		Italian	M1770-91905
		Swedish	M1770-91906
		Finnish	M1770-91910
	PageWriter 300pi Cardiograph Users’s Guide	English	M1770-91930
	(M1770A with Serial # Prefix CND)
		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 300pi Predictive Instruments Quick	English	M1770-92800
	Reference Guide (M1770A with Serial # Prefix
	CND)
		French	M1770-92801
		German	M1770-92802
		Dutch	M1770-92803
		Spanish	M1770-92804
		Italian	M1770-92805
		Swedish	M1770-92806
		Norwegian	M1770-92808
		Finnish	M1770-92809
	Interpretive Physician’s Guide (M1770A)	English	M1700-92908
		French	M1700-92918
		German	M1700-92928
		Dutch	M1700-92938
		Spanish	M1700-92948
		Italian	M1700-92958
	Interpretive Physician’s Guide - Addendum	English	M1700-90700
	(M1770A)
		French	M1700-90701
		German	M1700-90702
		Dutch	M1700-90703
		Spanish	M1700-90704
		Italian	M1700-90705
	Predictive Instruments Physician’s Guide	English	M1792-93900
	(M1770A with Serial # Prefix CND)
		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 PageWriter 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 Cardiograph 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

Introduction

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

Performance 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 following 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.

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

2-1

2Q 6WDQGE\

Performance Verification

Visual Inspection and Power On Self Test

Before beginning the inspection, press the key to put the cardiograph in 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 circuitry and the testing of printer, display, keyboard, and modem capabilities.

To begin the extended self-test, press and hold both the $XWR	and 0DQXDO keys while
turning on the cardiograph with the 2Q 6WDQGE\ key.
To stop or exit extended self-test, you must press 2Q 6WDQGE\	to place the cardiograph
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-	Comments/Expected Results
				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 fails.
	B		MODEM	5 mm/sec	OK for A#10, with modem or test tool
					attached
	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 report.

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-	Comments
				Writer 200/200i/300pi
	1		ROM-1	1	OK
	2		ROM-2	2	Passes for 300pi, 200i, and 200 with
					software revision A.05.06 or later.
	3		ROM-X1	3	Passes for Options #A05 and #A10
					only.
	4		ROM-X2	4	Passes for Options #A05 and #A10
					only.
	5		RAM	5	OK
	6		NVRAM	6	OK
	7		GA	7	OK
	8		ECG FE	8	OK
	9		SIO	9	Passes for Options #A05 and #A10
					only.
	A		REMOTE	A	For future use - normally fails
	B		MODEM	B	Passes for Options #A05 and #A10
					only, with modem or test tool
					attached
	C		FLASH1	C	Passes for Options #A05 and #A10
					only
	D		FLASH2	D	For future use - normally fails

2-4

CAUTION

Table 2-4

Performance Verification

If your cardiograph is equipped with Options #A05 or #A10, do not turn it off during 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.

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 Memory (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	U205 - Main CPU Board		M1770-89505
ROM 2	U206 - Main CPU Board		M1770-89521	English
			M1770-89521	French
			M1770-89522	German
			M1770-89523	Dutch
			M1770-89524	Spanish
			M1770-89525	Italian
ROM X1	U9 - Interface Board		M2488-17901
ROM X2	U10 - Interface Board		M2488-17902

Table 2-6	ROM Replacement Part Numbers for PageWriter Cardiographs M1770, M1771A Serial Number
	Prefix CND
Test		ROM Part Number		Language
ROM 1	U205 - Main CPU Board		M1770-89550	English
ROM 2			M1770-89551	French
			M1770-89552	German
			M1770-89553	Dutch
			M1770-89554	Spanish
			M1770-89555	Italian
			M1770-89556
				Swedish
			M1770-89558
				Norwegian
			M1770-89559
				Finnish
ROM X1	U9 - Interface Board		M2488-17901
ROM X2	U10 - Interface Board		M2488-17902

2-6