Epson DFX-8500 Service Manual.pdf

EPSON

IMPACT SERIAL DOT MATRIX PRINTER

DFX-8500

SERVICE MANUAL

SEIKO EPSON CORPORATION

4009310

NOTICE

without SEIKO EPSON’s express written permission is forbidden.

The contents of this manual are subjects to change without notice.

All efforts have been made to ensure the accuracy of the contents of this manual.

However, should any errors be detected, SEIKO EPSON would greatly appreciate

being informed of them.

The above notwithstanding SEIKO EPSON can assume no responsibility for any errors

in this manual or the consequences thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice:

Other product names used herein are for identification purposes only and may be

trademarks or registered trademarks of their respective companies.

1998 by SEIKO EPSON CORPORATION

Nagano, Japan

PRECAUTIONS

Precautionary notations throughout the text are categorized relative to 1) personal injury and 2)

damage to equipment.

WARNING Signals a precaution which, if ignored, could result in serious or fatal personal injury.

Great caution should be exercised in performing procedures preceded by

WARNING Headings.

CAUTION

Signals a precaution which, if ignored, could result in damage to equipment.

The precautionary measures itemized below should always be observed when performing

repair/maintenance procedures.

WARNING

1. ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND

PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES.

2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH

BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN

THEIR LINE OF WORK.

3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL. DO NOT

CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE

POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING

ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

CAUTION

1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY EPSON CERTIFIED

REPAIR TECHNICIAN.

2. MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLTAGE,

LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A

PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT

CONNECT IT TO THE POWER SOURCE.

3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE

POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS

AND/OR INDIVIDUAL CHIPS.

4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE

STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN

ACCESSING INTERNAL COMPONENTS.

5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY

THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER

NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY

APPLICABLE EPSON WARRANTY.

iii

PREFACE

This manual describes functions, theory of electrical and mechanical operations, maintenance, and

repair of DFX-8500.

The instructions and procedures included herein are intended for the experience repair technician,

and attention should be given to die precautions on the preceding page. The Chapters are

organized as follows:

CHAPTER 1. GENERAL DESCRIPTION

Provides a general product overview, lists specifications, and illustrates the main components of the

printer.

CHAPTER 2. OPERATING PRINCIPLES

Describes the theory of printer operation.

CHAPTER 3. DISASSEMBLY AND ASSEMBLY

Includes a step-by-step guide for product disassembly and assembly.

CHAPTER 4. ADJUSTMENT

Includes a step-by-step guide for adjustment.

CHAPTER 5. TROUBLESHOOTING

Provides EPSON-approved techniques for troubleshooting.

CHAPTER 6. MAINTENANCE

Describes preventive maintenance techniques and lists lubricants and adhesives required to

service the equipment.

APPENDIX

Describes connector pin assignments, circuit diagrams, circuit board component layout and

exploded diagram.

The contents of this manual are subject to change without notice.

REVISION SHEET

Revision

Issued Data

Contents

Rev. A

May 18, 1998/

First issue

Rev. B

June 25, 1998

Second issue due to minor correction on the

manual contents.

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: