Epson Stylus Color 400 Service Manual

EPSON

EPSON Stylus Color 400

SERVICE MANUAL

COLOR INK-JET PRINTER

SEIKO EPSON CORPORATION

4007366

NOTICE

All rights reserved. Reproduction of any part of this manual in any form whatsoever

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without SEIKO EPSON’s express written permission is forbidden.
The contents of this manual are subjects to change without notice.

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

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However, should any errors be detected, SEIKO EPSON would greatly appreciate
being informed of them.
The above notwithstanding SEIKO EPSON can assume no responsibility f or any errors

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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.

Copyright  1997 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

CAUTION

The precautionary measures itemized below should always be observed when performing
repair/maintenance procedures.

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

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 CO NNECTED, USE EXT REME CAUT ION IN W O RKING
ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

CAUTION

1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED O NLY BY EPSON CERTIFIED
REPAIR TECHNICIAN.

2. MAKE CERTAIN THAT T HE SOURCE VOLT AGE IS THE SAME AS T HE RATED VOLT AGE,
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 T HE EPSON PRODUCT HAS BEEN DISCONNECT ED 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.