Epson Stylus C58/C59
Epson ME 2
Epson Stylus C79/D78
Epson Stylus C90/C91/C92/D92
Epson Stylus T20/T20E/T23/T26/S20
Epson Stylus T10/T11
Epson ME 30
Epson Stylus T21/T24/T27/S21
Color Inkjet Printer
SERVICE MANUAL
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 © 2009 SEIKO EPSON CORPORATION.
IJP LP CS Quality Assurance Department
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 INJURY 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 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 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
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 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 list of Epson-
approved lubricants and adhesives required for servicing the product.
APPENDIX Provides the following additional information for reference:
• Exploded Diagram
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, and WARNING messages.
Indicates an operating or maintenance procedure, practice or condition
that, if not strictly observed, could result in injury.
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 is necessary to maintain the product’s quality.
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.
W A R N I N G
C A U T I O N
C H E C K
P O I N T
A D J U S T M E N T
R E Q U I R E D
Revision Status
Revision Date of Issue Description
A August 7, 2006 First Release
B December 1, 2006 [Chapter 4]
• “4.3.1 Upper Housing (p38)”
Note when replacing the Base Frame is added to the reassembly procedure.
[Chapter 7]
• “7.1 Exploded Diagram / Parts List (p85)” are updated.
C May 1, 2007 [All chapters]
• The model name; EPSON Stylus C90/C91/C92/D92 are added.
[Chapter 1]
• “1.2.3 Ink Cartridge (p14)” is updated.
[Chapter 2]
• “ The Capping mechanism covers the printhead with the cap to prevent the nozzle from increasing viscosity when the printer is in
stand-by state or when the printer is off. (p25)” is updated.
[Chapter 4]
• “4.5.6 Ink System removal (p51)”
Caution during inserting the Ink Tube into the connector is added.
• “4.5.8 EJ Frame Assy/EJ Roller (p54)”
Reassembly procedure of the Grounding Spring, Frame is added.
[Chapter 5]
• “5.2.1 Head angular adjustment (p75)”
Print samples made by the adjustment program for Stylus C90/C91/C92/D92 is added.
[Chapter 6]
• “6.1.3 Lubrication (p81)”
Lubrication point for Stylus C90/C91/C92/D92 is added.
[Chapter 7]
• “7.1 Exploded Diagram / Parts List (p85)”
Exploded Diagrams for Stylus C90/C91/C92/D92 are added.
• “7.3 Circuit Diagrams (p96)”
Circuit diagram of Stylus C90/C91/C92/D92; C683 Main is added.
Revision Date of Issue Description
D May 16, 2008 [All chapters]
The model name; Stylus T20/T20E/T23/T26/S20/T10/T11/Me 30 are added.
[Chapter 1]
• “1.1 Features (p10)” is updated.
• “1.2.1 Paper Support (p12)” is updated.
• “1.2.3 Ink Cartridge (p14)” is updated.
• “1.3.1 USB Interface (p16)” is updated.
[Chapter 2]
• 2.3 Electrical Circuit Operating Principles is deleted.
[Chapter 4]
• “4.1.6 Procedural Differences between the Models (p35)” is updated.
• “4.2 Disassembly Procedures (p37)” is updated.
• “4.5.5 CR Unit/Timing Belt (p48)”
Reassembly procedure of the Installing Head FFC is added.
[Chapter 7]
• Exploded Diagram / Parts List is changed to reference to SPI.
• Circuit Diagrams is deleted.
E May 7, 2009 [All chapters]
The model name; Epson Stylus T21/T24/T27/S21 are added.
[Chapter 1]
• “1.1 Features (p10)” is updated.
• “ Print speed & printable width (p11)” is updated.
• “1.2.1 Paper Support (p12)” is updated.
• “1.2.2 Printable Area Size and Margins (p13)” is updated.
• “1.2.3 Ink Cartridge (p14)” is updated.
• “1.2.4 Black Ink Save Mode (p15)” is updated.
• “1.3.1 USB Interface (p16)” is updated.
• “1.4.1 Electrical Specifications (p17)” is updated.
• “1.4.2 Acoustic Noise (p17)” is updated.
• “1.4.3 Safety Approvals (p17)” is updated.
• “1.4.5 Environmental Performance (p18)” is revised.
• “1.4.6 Durability (p18)” is revised.
[Chapter 2]
• “2.3 Power-On Sequence (p26)” is added.
Epson Stylus C58/C59/ME 2/C79/D78/C90/C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/ME 30/T21/T24/T27/S21 Revision E
7
Contents
Chapter 1 PRODUCT DESCRIPTION
1.1 Features. ............................................................................................................... 10
1.2 Printer Specifications. ......................................................................................... 11
1.2.1 Paper Support . ......................................................................................... 12
1.2.2 Printable Area Size and Margins . ............................................................ 13
1.2.3 Ink Cartridge. ........................................................................................... 14
1.2.4 Black Ink Save Mode . ............................................................................. 15
1.3 Interface ............................................................................................................... 16
1.3.1 USB Interface . ................................................................................................. 16
1.4 General Specifications. ....................................................................................... 17
1.4.1 Electrical Specifications . ................................................................................. 17
1.4.2 Acoustic Noise. ................................................................................................ 17
1.4.3 Safety Approvals . ............................................................................................ 17
1.4.4 CE Marking . .................................................................................................... 17
1.4.5 Environmental Performance . ........................................................................... 18
1.4.6 Durability.......................................................................................................... 18
1.5 Control Panel . ..................................................................................................... 19
1.5.1 Buttons...................................................................................................... 19
1.5.2 Indicators . ................................................................................................ 19
1.5.3 Errors and Panel Status. ........................................................................... 20
1.5.4 Printer Initialization. ................................................................................ 20
Chapter 2 OPERATING PRINCIPLES
2.1 Overview ............................................................................................................. 22
2.2 Printer Mechanism. ............................................................................................. 22
2.2.1 Printhead Specifications . ......................................................................... 23
2.2.2 Carriage Mechanism. ............................................................................... 23
2.2.3 Paper Feeding Mechanism . ..................................................................... 24
2.2.4 Ink System Mechanism . .......................................................................... 25
2.3 Power-On Sequence . .......................................................................................... 26
Chapter 3 TROUBLESHOOTING
3.1 Overview . ............................................................................................................ 28
3.1.1 Specified Tools......................................................................................... 28
3.1.2 Preliminary Checks . ................................................................................ 28
3.2 Troubleshooting With LED Error Indications. ................................................... 29
3.3 Troubleshooting for Motors and Sensors . .......................................................... 30
Chapter 4 DISASSEMBLY/ASSEMBLY
4.1 Overview . ............................................................................................................ 32
4.1.1 Precautions . .............................................................................................. 32
4.1.2 Tools . ........................................................................................................ 33
4.1.3 Screws . ..................................................................................................... 33
4.1.4 Work Completion Check. ........................................................................ 34
4.1.5 Caution After Repair . .............................................................................. 34
4.1.6 Procedural Differences between the Models. .......................................... 35
4.2 Disassembly Procedures. .................................................................................... 37
4.3 Removing Housing.............................................................................................. 38
4.3.1 Upper Housing . ............................................................................................... 38
4.4 Removing Board.................................................................................................. 40
4.4.1 Main Board............................................................................................... 40
Epson Stylus C58/C59/ME 2/C79/D78/C90/C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/ME 30/T21/T24/T27/S21 Revision E
8
4.5 Disassembling Printer Mechanism . .................................................................... 42
4.5.1 Hopper ...................................................................................................... 42
4.5.2 Printhead. ................................................................................................. 43
4.5.3 CR Scale ................................................................................................... 46
4.5.4 CR Motor. ................................................................................................ 47
4.5.5 CR Unit/Timing Belt . .............................................................................. 48
4.5.6 Ink System removal . ................................................................................ 51
4.5.7 Power Supply Board. ............................................................................... 53
4.5.8 EJ Frame Assy/EJ Roller. ........................................................................ 54
4.5.9 Main Frame . ............................................................................................ 56
4.5.10 LD Roller/ASF Unit . ............................................................................. 59
4.5.11 Waste Ink Pads . ..................................................................................... 61
4.5.12 PF Roller. ............................................................................................... 62
4.5.13 PF Motor. ............................................................................................... 63
4.6 Procedure Specific to Epson Stylus C58/C59/ME 2 . ......................................... 64
4.6.1 Printhead. ................................................................................................. 64
4.6.2 Waste Ink Pads . ....................................................................................... 67
4.7 The Shortest Way to Remove the Main Frame. . ................................................ 68
Chapter 5 ADJUSTMENT
5.1 Adjustment Items and Overview . ....................................................................... 70
5.1.1 Servicing Adjustment Item List. .............................................................. 70
5.1.2 Replacement Part Adjustment Items . ...................................................... 73
5.2 Adjustment by Using Adjustment Program . ...................................................... 75
5.2.1 Head angular adjustment . ........................................................................ 75
5.2.2 Top Margin Adjustment . ......................................................................... 76
5.2.3 Bi-D Adjustment . .................................................................................... 76
5.2.4 First Dot Adjustment . .............................................................................. 77
5.2.5 PF Band Adjustment. ............................................................................... 77
Chapter 6 MAINTENANCE
6.1 Overview ............................................................................................................. 79
6.1.1 Cleaning. .................................................................................................. 79
6.1.2 Service Maintenance . .............................................................................. 79
6.1.3 Lubrication . ............................................................................................. 81
Chapter 7 APPENDIX
7.1 Exploded Diagram / Parts List . .......................................................................... 85
CHAPTER
1
PRODUCT DESCRIPTION
Epson Stylus C58/C59/ME 2/C79/D78/C90/C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/ME 30/T21/T24/T27/S21 Revision E
PRODUCT DESCRIPTION Features 10
1.1 Features
Main features of Epson Stylus C58/C59/ME 2 and Epson Stylus C79/D78/C90/
C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/Epson ME 30/T21/T24/T27/S21
High quality color printing
Maximum print resolution: 5760 (H) x 1440 (V) dpi
4-color printing (Yellow, Magenta, Cyan, and Black)
Separate ink cartridges for each color
Build-in ASF (Auto Sheet Feeder)
Holds 80 cut sheets (24 lb, 90 g/m
2
)
Holds 20 special media (EPSON Premium Glossy Photo Paper, L (3R) size)
USB 1.1 compatible
Windows/Macintosh supported
Borderless printing
The difference between the Epson Stylus C58/C59/ME 2, Epson Stylus C79/D78/
C90/C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/ME 30/T21/T24/T27/S21
The main difference is the ink type as shown in the table below.
Dimension
With the output tray and paper support closed
Width: 435 mm (17.1 inches)
Depth: 219 mm (8.6 inches)
Height: 165 mm (6.5 inches)
Maximum dimension
Width: 435 mm (17.1 inches)
Depth: 418 mm (16.5 inches)
Height: 289 mm (11.4 inches)
Weight
2.8 kg (6.2 lb) without ink cartridges
Figure 1-1. External View
Table 1-1. Difference between the Models
Model Ink Type
Epson Stylus C58/C59/ME 2 Dye-based ink which has a good distinction of color
Epson Stylus C79/D78/C90/
C91/C92/D92/T20/T20E/T23/
T26/S20/T10/T11/ME 30/T21/
T24/T27/S21
Pigment-based ink that provides the water, light and
ozone resistant
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Description
Are you experiencing issues with your Epson Printer? Why spend a lot on repairs or replacements when you can handle it yourself? This comprehensive service and repair manual is utilized by certified Epson technicians and is equally beneficial for both professionals and DIY enthusiasts.
- Safety & Precautions
- Product Specifications
- Disassembly & Reassembly
- Adjustments
- Troubleshooting
- Maintenance
This detailed manual is accompanied by illustrations and step-by-step instructions, ensuring you can effectively troubleshoot and repair your printer. It is available in a high-resolution format, guaranteeing excellent print quality for the pages you need.
Upon payment, you will gain instant access to the manual without any shipping delays, allowing you to commence repairs promptly. The manual is in English and is compatible with both Windows and MAC platforms.
If you are unable to locate a specific service manual, feel free to reach out to us. With one of the most extensive service manual databases, we are well-equipped to assist you.
