Service Manuals, User Guides, Schematic Diagrams or docs for : epson printer Epson SQ 870 SQ1170 Service Manual

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EPSON TERMINAL PRINTER



SQ - 870/1170




                         4001225
                           REV.-A
                                                                                      o




                                     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.

                             @ Copyright 1992 by SEIKO EPSON CORPORATION
                                Nagano, Japan


                                      -i-
                                                                                                   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/main-
tenance 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/RATING PLATE. IF THE EPSON PROD-
          UCT HAS A PRIMARY-AC RATING DIFFERENT FROM THE 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 KP CHIPS AND CIRCUITRY, USE STATIC
         DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESS-
         ING INTERNAL COMPONENTS.
      5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS
         RECOMMENDED BY THE MANUFACTURER; INTRODUCTION OF SECOND-SOURCE
         ICS OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND
         VOID ANY APPLICABLE EPSON WARRANTY.




                                                 - ii 

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