File name Epson FX-850 FX-1050 Service Manual.pdf

FX-85t3/I05D TECHNICAL MANUAL EPSON ~...,, ,: (-' ... (,. " NOTICE " All rights reserved. Reproduction of any part of this manual in any from whatsoever without SEIKO EPSON'S express written permission is forbidden. " The contents of this manual are subject 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. (L Copyright 1988 by SEIKO EPSON CORPORATION Na,ga no, Japan -i- REV.-A PREFACE This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of the FX-850 and FX- 1050. The instructions and procedures included herein are intended for the experienced repair technician, and attention should be given to the precautions on the preceding page. The chapters are organized as follows: Chapter 1 Provides a general product overview, lists specifications, and illustrates the main components of the printer. Chapter 2 Chapter 3 Chapter 4 Describes the theory of printer operation. Discusses the options Includes a step-by-step guide for product disassembly, assembly, and adjustment. Chapter 5 Chapter 6 Provides Epson-approved techniques for troubleshooting. Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment. q The contents of this manual are subject to change without notice. ­ iv ­ REV.-A REVISION TABLE REVISION A DATE ISSUED February 15, 1988 CHANGE DOCUMENT 1st issue g,}, .. .. f--; -v- REV.-A 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 a 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/maintenance procedures. DANGER 1. ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND THE HOST COMPUTER BEFORE 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 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. WARNING 1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. 2. MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER