Epson EPL-5500W User manual

EPSON TERMINAL PRINTER
EPL-5500W
SERVICE MANUAL
EPSON 4005668

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NOTICE
All rights reserved. Reproduction of any part of this manual in any form whatsoever 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 consequence thereof.
Epson is a registered trademark of Seiko Epson Corporation.
GeneralNotice: Other product names used herein are for identication purposes only and may be trademarks
of their respective campanies.
Copyright © 1995 by SEIKO EPSON CORPORATION Nagano, Japan
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PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1) personal injury and 2) damage to
equipment.
DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great
caution should be exercised in performing procedures preceded by DANGER Headings.
WARNING Signals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/ mainte-
nance procedures.
DANGER
1. ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND PERI-
PHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURE.
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 CON-
NECT 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.
WARNING
1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTI-
FIED 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 CON-
NECT 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 NONAP-
PROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE
EPSON WARRANTY.
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SAFETY INFORMATION
This printer is a page printer which operates by means of a laser. There is no possibility of danger from the laser,
provided the printer is operated according to the instructions in this manual provided.
Since radiation emitted by the laser is completely confined within protective housings, the laser beam cannot escape
from the machine during any phase of user operation.
For United States Users;
[Laser Safety]
This printer is certified as a Class 1 Laser product under the U.S. Department of Health and
Human Services (DHHS) Radiation Performance Standard according to the Radiation Control
for Health and Safety Act of 1968. This means that the printer does not produce hazardous laser
radiation.
[CDRH Regulations]
The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Adminis-
tration implemented regulations for laser products on August 2, 1976. Compliance is mandatory
for products marketed in the United States. The label shown below indicates compliance with
the CDRH regulations and must be attached to laser products marketed in the United States.
WARNING : Use of controls, adjustments or performance of procedures other than
those specified in this manual may result in hazardous radiation exposure.
[Internal Laser Radiation]
Maximum Radiation Power: 5.0 ×10-4 (W)
Wave Length: 790 ±20 nm
This is a Class IIIb Laser Diode Assay that has an invisible laser beam. The print head unit is
NOT A FIELD SERVICE ITEM. Therefore, the print head unit should not be opened under any
circumstances.
For Other Countries Users;
WARNING: Use of controls, adjustments or performance of procedures other than
those specified in this manual may result in hazardous radiation exposure.
This is a semiconductor laser. The maximum power of the laser diode is 5.0 ×10-4
W and the wavelength is 790 ±20 nm.
For Denmark Users;
ADVARSEL
Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion. Undgå
udsættelse for stråling.
Klasse 1 laser produkt der opfylder IEC825 sikkerheds kravene.
For Finland, Sweden Users;
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VAROITUS
Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altis-
taa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteiylle.
VARNING
Om apparaten används på annat sätt än i denna bruksanvisning specificerats, kan
användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laser klass
1.
For Finland, Sweden Service People
VAROITUS
Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle laser-säteilylle. Älä
katso säteeseen.
VARNING
Osynlig laserstrålning när denna del är öppnad och spärren är urkopplad. Betrakta ej
strålen.
For Norway Users;
ADVARSEL
Dersom apparatet brukes på annen måte enn spesifisert i denne bruksanvisning, kan
brukeren utsettes for unsynlig laserstråling som overskrider grensen for laser klasse 1.
Dette er en halvleder laser. Maksimal effeckt til laserdiode er 5.0 ×10-4 Wog
bølgelengde er 790 ±20 nm.
Laser Safety Labels
[Label on rear printer case]
A laser safety labels is attached on the outside of the printer shown below.
For United State
For Europe
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[Label inside printer]
The following laser safety label will be attached inside the printer as shown below.
For Denmark, Finland, Sweden, and Norway
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PREFACE
This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of
EPL-5500W.
The instructions and procedures included herein are intended for the experience repair technician, and attention
should be given to the 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. ADJUSTMENTS
Includes a step-by-step guide for adjustment.
CHAPTER 5. TROUBLESHOOTING
Provides Epson-approved techniques for adjustment.
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.
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REVISION SHEET
Revision Issue Date Revision Page
Rev. A November 24, 1995 1st issue
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TABLE OF CONTENTS
CHAPTER 1. GENERAL DESCRIPTION
CHAPTER 2. OPERATING PRINCIPLES
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
CHAPTER 4. ADJUSTMENTS
CHAPTER 5. TROUBLESHOOTING
CHAPTER 6. MAINTENANCE
APPENDIX
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