Epson Stylus DX8400 User Manual

SERVICE MANUAL

Color Inkjet Printer

EPSON Stylus CX7300/CX7400/DX7400/

CX8300/CX8400/DX8400

SEMF07-001

Notice:

 All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,

photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.

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

 All effort 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 not withstanding SEIKO EPSON CORPORATION 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 purpose only and may be trademarks or registered trademarks of their

respective owners. EPSON disclaims any and all rights in those marks.

Copyright © 2007 SEIKO EPSON CORPORATION.

Imaging Products CS, PL & Environmental Management

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/maintenance procedures.

DANGER

1. ALWAYS DISCONNECT THE PRODUCT FROM 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.

4. WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES.

WARNING

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

2. MAKE CERTAIN THAT THE SOURCE VOLTAGES 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 NON-APPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.

6. WHEN USING COMPRESSED AIR PRODUCTS; SUCH AS AIR DUSTER, FOR CLEANING DURING REPAIR AND MAINTENANCE, THE USE OF SUCH
PRODUCTS CONTAINING FLAMMABLE GAS IS PROHIBITED.

About This Manual

A D J U S T M E N T

R E Q U I R E D

C A U T I O N

C H E C K

P O I N T

W A R N I N G

This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. The instructions and procedures included
herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.

Manual Configuration

This manual consists of six chapters and Appendix.

CHAPTER 1.PRODUCT DESCRIPTIONS

Provides a general overview and specifications of the product.

CHAPTER 2.OPERATING PRINCIPLES

Describes the theory of electrical and mechanical operations of the
product.

CHAPTER 3.TROUBLESHOOTING

Describes the step-by-step procedures for the troubleshooting.

CHAPTER 4.DISASSEMBLY / ASSEMBLY

Describes the step-by-step procedures for disassembling and assembling
the product.

CHAPTER 5.ADJUSTMENT

Provides Epson-approved methods for adjustment.

CHAPTER 6.MAINTENANCE

Provides preventive maintenance procedures and the lists of Epson­approved lubricants and adhesives required for servicing the product.

APPENDIX Provides the following additional information for reference:

• Exploded Diagram

• Parts List

• Circuit Diagrams

Symbols Used in this Manual

Various symbols are used throughout this manual either to provide additional
information on a specific topic or to warn of possible danger present during a
procedure or an action. Be aware of all symbols when they are used, and always read
NOTE, CAUTION, or WARNING messages.

Indicates an operating or maintenance procedure, practice or condition
that is necessary to keep the product’s quality.

Indicates an operating or maintenance procedure, practice, or condition
that, if not strictly observed, could result in damage to, or destruction of,
equipment.

May indicate an operating or maintenance procedure, practice or
condition that is necessary to accomplish a task efficiently. It may also
provide additional information that is related to a specific subject, or
comment on the results achieved through a previous action.

Indicates an operating or maintenance procedure, practice or condition
that, if not strictly observed, could result in injury or loss of life.

Indicates that a particular task must be carried out according to a certain
standard after disassembly and before re-assembly, otherwise the
quality of the components in question may be adversely affected.

Revision Status

Revision Date of Issue Description

A August 9, 2007 First Release

EPSON Stylus CX7300/CX7400/DX7400/CX8300/CX8400/DX8400 Revision A

Contents

Chapter 1 PRODUCT DESCRIPTION

1.1 Features.................................................................................................................. 9

1.2 Printing Specifications......................................................................................... 10

1.2.1 Basic Specifications.................................................................................... 10

1.2.2 Ink Cartridge............................................................................................... 10

1.2.3 Print Mode .................................................................................................. 11

1.2.4 Supported Paper.......................................................................................... 13

1.2.5 Printing Area............................................................................................... 15

1.3 Scanner Specifications......................................................................................... 15

1.3.1 Scanning Range .......................................................................................... 15

1.4 General Specifications......................................................................................... 16

1.4.1 Electrical Specifications ............................................................................. 16

1.4.2 Environmental Conditions .......................................................................... 16

1.4.3 Durability.................................................................................................... 17

1.4.4 Acoustic Noise............................................................................................ 17

1.4.5 Safety Approvals (Safety standards/EMI) .................................................. 17

1.5 Interface............................................................................................................... 17

1.5.1 USB Interface ............................................................................................. 17

1.5.2 Memory Card Slots..................................................................................... 18

1.6 Control Panel ....................................................................................................... 19

1.6.1 Operation Buttons & LEDs ........................................................................ 19

1.6.2 Control Panel Functions in Each Mode ...................................................... 21

1.7 Specification for Each Function .......................................................................... 29

1.7.1 Stand-alone Copy Function ........................................................................ 29

1.7.2 Memory Card Direct Print Function........................................................... 31

1.7.3 Camera Direct Print Function(USB Direct Print/PictBridge) .................... 36

1.7.4 Reprint/Restore Photos Function (CX8300/CX8400/DX8400 only) ......... 38

1.7.5 Setup Mode................................................................................................. 39

Chapter 2 OPERATING PRINCIPLES

2.1 Overview ............................................................................................................. 42

2.1.1 Printer Mechanism...................................................................................... 42

2.1.2 Motors & Sensors ....................................................................................... 43

2.1.3 Printhead..................................................................................................... 44

2.1.4 Carriage Mechanism................................................................................... 46

2.1.5 Paper Loading/Paper Feed Mechanism ...................................................... 47

2.1.6 Ink System Mechanism .............................................................................. 52

2.1.7 Ink Sequence............................................................................................... 55

2.2 Scanner Mechanism ............................................................................................ 56

2.2.1 Scanner Carriage Mechanism..................................................................... 56

2.3 Electrical Circuit Operating Principles................................................................ 58

2.3.1 PSB Board .................................................................................................. 58

2.3.2 C690 Main Board ....................................................................................... 59

Chapter 3 TROUBLESHOOTING

3.1 Overview ............................................................................................................. 66

3.1.1 Specified Tools ........................................................................................... 66

3.1.2 Preliminary Checks..................................................................................... 66

3.2 Troubleshooting................................................................................................... 67

3.2.1 Motor and Sensor Troubleshooting ............................................................ 67

3.3 Error Indications and Fault Occurrence Causes .................................................. 68

3.3.1 Error Indication Method ............................................................................. 68

3.3.2 Troubleshooting by Error Message ............................................................ 72

3.3.3 Superficial Phenomenon-Based Troubleshooting ...................................... 90

6