SERVICE MANUAL
Color Inkjet Printer
EPSON Stylus C58/C59/ME 2
EPSON Stylus C79/D78
EPSON Stylus C90/C91/C92/D92
SEIJ06-003
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 © 2006 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 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 Epsonapproved lubricants and adhesives required for servicing the product.
APPENDIX Provides the following additional information for reference:
• Exploded Diagram
• 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, and WARNING messages.
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
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.
Revision Status
Revision Date of Issue Description
A August 7, 2006 First Release
B December 1, 2006 [Chapter 4]
• “4.3.1 Upper Housing (p36) ”
Note when replacing the Base Frame is added to the reassembly procedure.
[Chapter 7]
• “7.1 Exploded Diagrams (p82) ” 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 (p13) ” is updated.
[Chapter 2]
• “2.3 Electrical Circuit Operating Principles (p22) ” is updated.
[Chapter 4]
• “4.5.6 Ink System removal (p48) ”
Caution during inserting the Ink Tube into the connector is added.
• “4.5.8 EJ Frame Assy/EJ Roller (p51) ”
Reassembly procedure of the Grounding Spring, Frame is added.
[Chapter 5]
• “5.2.1 Head angular adjustment (p72) ”
Print samples made by the adjustment program for Stylus C90/C91/C92/D92 is added.
[Chapter 6]
• “6.1.3 Lubrication (p78) ”
Lubrication point for Stylus C90/C91/C92/D92 is added.
[Chapter 7]
• “7.1 Exploded Diagrams (p82) ”
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.
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
Contents
Chapter 1 PRODUCT DESCRIPTION
1.1 Features................................................................................................................. 9
1.2 Printer Specifications.......................................................................................... 10
1.2.1 Paper Support .......................................................................................... 11
1.2.2 Printable Area Size and Margins ............................................................. 12
1.2.3 Ink Cartridge............................................................................................ 13
1.2.4 Black Ink Save Mode .............................................................................. 14
1.3 Interface.............................................................................................................. 14
1.3.1 USB Interface .......................................................................................... 14
1.4 General Specifications........................................................................................ 15
1.4.1 Electrical Specifications .......................................................................... 15
1.4.2 Acoustic Noise......................................................................................... 15
1.4.3 Safety Approvals ..................................................................................... 15
1.4.4 CE Marking ............................................................................................. 15
1.4.5 Environmental Performance .................................................................... 15
1.4.6 Durability................................................................................................. 15
1.5 Control Panel...................................................................................................... 16
1.5.1 Buttons..................................................................................................... 16
1.5.2 Indicators ................................................................................................. 16
1.5.3 Errors and Panel Status ............................................................................ 17
1.5.4 Printer Initialization ................................................................................. 17
Chapter 2 OPERATING PRINCIPLES
2.1 Overview ............................................................................................................ 19
2.2 Printer Mechanism.............................................................................................. 19
2.2.1 Printhead Specifications .......................................................................... 20
2.2.2 Carriage Mechanism................................................................................ 20
2.2.3 Paper Feeding Mechanism ...................................................................... 21
2.2.4 Ink System Mechanism ........................................................................... 22
2.3 Electrical Circuit Operating Principles............................................................... 22
2.3.1 C664 PSB/PSE Board.............................................................................. 23
2.3.2 C664/C683 Main Board .......................................................................... 23
Chapter 3 TROUBLESHOOTING
3.1 Overview ............................................................................................................ 27
3.1.1 Specified Tools........................................................................................ 27
3.1.2 Preliminary Checks ................................................................................. 27
3.2 Troubleshooting With LED Error Indications.................................................... 28
3.3 Troubleshooting for Motors and Sensors ........................................................... 29
Chapter 4 DISASSEMBLY/ASSEMBLY
4.1 Overview ............................................................................................................ 31
4.1.1 Precautions .............................................................................................. 31
4.1.2 Tools........................................................................................................ 32
4.1.3 Screws ..................................................................................................... 32
4.1.4 Work Completion Check......................................................................... 33
4.1.5 Caution After Repair ............................................................................... 33
4.1.6 Procedural Differences between the Models........................................... 34
4.2 Disassembly Procedures..................................................................................... 35
4.3 Removing Housing............................................................................................. 36
4.3.1 Upper Housing ........................................................................................ 36
4.4 Removing Board................................................................................................. 38
4.4.1 Main Board.............................................................................................. 38
4.5 Disassembling Printer Mechanism..................................................................... 40
4.5.1 Hopper..................................................................................................... 40
4.5.2 Printhead.................................................................................................. 41
4.5.3 CR Scale.................................................................................................. 44
4.5.4 CR Motor................................................................................................. 45
4.5.5 CR Unit/Timing Belt............................................................................... 46
4.5.6 Ink System removal................................................................................. 48
4.5.7 Power Supply Board................................................................................ 50
4.5.8 EJ Frame Assy/EJ Roller......................................................................... 51
4.5.9 Main Frame ............................................................................................. 53
4.5.10 LD Roller/ASF Unit .............................................................................. 56
4.5.11 Waste Ink Pads ...................................................................................... 58
6
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.12 PF Roller................................................................................................ 59
4.5.13 PF Motor................................................................................................ 60
4.6 Procedure Specific to Stylus C58/C59/ME 2 ..................................................... 61
4.6.1 Printhead .................................................................................................. 61
4.6.2 Waste Ink Pads ........................................................................................ 64
4.7 The Shortest Way to Remove the Main Frame. ................................................. 65
Chapter 5 ADJUSTMENT
5.1 Adjustment Items and Overview ........................................................................ 67
5.1.1 Servicing Adjustment Item List............................................................... 67
5.1.2 Replacement Part Adjustment Items ....................................................... 70
5.2 Adjustment by Using Adjustment Program ....................................................... 72
5.2.1 Head angular adjustment ......................................................................... 72
5.2.2 Top Margin Adjustment .......................................................................... 73
5.2.3 Bi-D Adjustment ..................................................................................... 73
5.2.4 First Dot Adjustment ............................................................................... 74
5.2.5 PF Band Adjustment................................................................................ 74
Chapter 6 MAINTENANCE
6.1 Overview ............................................................................................................ 76
6.1.1 Cleaning ................................................................................................... 76
6.1.2 Service Maintenance ............................................................................... 76
6.1.3 Lubrication .............................................................................................. 78
Chapter 7 APPENDIX
7.1 Exploded Diagrams ............................................................................................ 82
7.2 Parts List............................................................................................................. 95
7.3 Circuit Diagrams ................................................................................................ 96
7
PRODUCT DESCRIPTION
CHAPTER
1
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
1.1 Features
Main features of Stylus C58/C59/ME 2 and Stylus C79/D78/C90/C91/C92/D92
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/m2)
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 Stylus C58/C59/ME 2 and Stylus C79/D78/C90/C91/
C92/D92
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
Stylus C79/D78/C90/C91/C92/D92
Table 1-1. Difference between the Models
Model Ink Type
Stylus C58/C59/ME 2 Dye-based ink which has a good distinction of color
Stylus C79/D78/C90/
C91/C92/D92
Pigment-based ink that provides the water, light and
ozone resistant
Figure 1-1. External View
Stylus C58/C59/ME 2
PRODUCT DESCRIPTION Features 9
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
1.2 Printer Specifications
Table 1-2. Printer Specifications
Item Specification
Print method On-demand ink jet
Nozzle configuration
Print direction Bidirectional with logic seeking
Print resolution
Control code
Internal font
Input buffer size 32 Kbytes
Paper feed method Friction feed with ASF (Auto Sheet Feeder)
Paper path Sheet feeder, top entry
Paper feed rates (TBD)
Black: 90 nozzles
Color: 87 nozzles (29 each cartridge: cyan, magenta, yellow)
Horizontal x Vertical (dpi)
• 360 x 120 • 720 x 720
• 360 x 360 • 1440 x 720
• 360 x 720 • 5760 x 1440
• ESC/P2 expanded raster graphics code
• EPSON Remote command
Character code: ASCII 20H to 7FH
Font: Bit map LQ font
EPSON Courier
• High quality mode, 10.16-mm (0.4") feed
TBD mm/sec (TBD inch/sec)
• High speed mode, continuous feed
TBD mm/sec (TBD inch/sec)
PRINT SPEED & PRINTABLE WIDTH
Table 1-3. Character Mode
Character Pitch Printable Columns CR Speed
10 CPI (Pica) 80 419 mm/s (165 CPS*)
Note * : CPS: Characters per second
Table 1-4. Graphics Mode
Horizontal
Resolution
360 dpi
720 dpi
1440 dpi
5760 dpi
Printable
Area
209.8 mm
(8.26")
209.8 mm
(8.26")
209.8 mm
(8.26")
209.8 mm
(8.26")
Max. Dot
Count
2976
5952
11904
23808 VSD3 VSD3
Stylus C58/
C59/ME 2
Eco Eco
VSD1 VSD1
VSD2 VSD2
VSD3 ---
VSD3 VSD3
Dot Size
Stylus C79/
D78/C90/C91/
C92/D92
--- VSD2’ (Color)
--- VSD2’ (Black)
--- VSD3’ (Color)
--- VSD3’ (Black)
CR
Speed
723.9 mm/s
(360 CP)S
419.1 mm/x
(165 CPS)
609.6 mm/s
(240 CPS)
PRODUCT DESCRIPTION Printer Specifications 10
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
1.2.1 Paper Support
Following table shows the paper type and sizes supported by the printer.
Supported paper type and sizes vary depending on the markets.
Table 1-5. Paper Support
*1
*1
*1
*1
Thickness
(mm)
0.08-0.11
N/A
0.11
0.13
0.27
*1
0.27
0.23
Item Paper Size
Plain paper
Recycled paper
Envelope
(Bond paper, Air mail, PPC)
Premium Ink Jet Plain Paper
Bright White Ink Jet Paper
Premium Photo Paper Glossy (EAI)
Premium Glossy Photo Paper (Other)
EPSON special paper
Premium Photo Paper Semi-Gloss (EAI)
Premium Semigloss Photo Paper (Other)
Premium Presentation Paper Matte (EAI)
Matte Paper-Heavyweight (Other)
Letter
Legal
Half Letter
A4
A5
A6
B5
User defined
No.10
DL
C6
A4
A4
Letter
*1
A4
8" x 10"
5" x 7"
4" x 7.11"
4" x 6"
L (3R)
Letter
*1
4" x 6"
Letter
*1
A4
Weight
64-90 g/m
2
(17-24 lb.)
45-75g/m
2
(12-20 lb.)
80 g/m2 (21 lb.)
92.5 g/m2 (25 lb.)
255 g/m2 (68 lb.)
250 g/m2 (66 lb.)A4
167 g/m2 (44 lb.)
Table 1-5. Paper Support
*
1
*1
*1
*1
*1
Thickness
(mm)
0.25
0.30
Weight
258 g/m2 (68 lb.)
290 g/m2 (77 lb.)
Item Paper Size
Letter
*1
Photo Paper Glossy (EAI)
Glossy Photo Paper (EUR, Asia)
A4
5" x 7"
4" x 6"
Letter
*1
A4
Ultra Premium Photo Paper Glossy (EAI)
Ultra Glossy Photo Paper (Other)
EPSON special paper
8" x 10"
5" x 7"
4" x 6"
L (3R)
Note 1: For paper width and length, see Table 1-6, “Paper Width and Length,” on page 12.
Note *1: Borderless printing supported.
C A U T I O N
Make sure that the paper is not wrinkled, fluffed, torn, or folded.
The curve of paper must be 5 mm or below.
When printing onto an envelope, be sure that the flap is on the
long edge and is folded.
Do not use the adhesive envelopes.
Do not use double envelopes and cellophane window envelopes.
PRODUCT DESCRIPTION Printer Specifications 11
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
PAPER WIDTH AND LENGTH
Table 1-6. Paper Width and Length
Paper Size Width Length
A4 210 mm (8.3") 297 mm (11.7")
A5 148 mm (5.8") 210 mm (8.3")
A6 148 mm (5.8") 210 mm (8.3")
B5 182 mm (7.2") 257 mm (10.1")
Letter 215.9 mm (8.5") 279.4 mm (11")
Legal 215.9 mm (8.5") 355.6 mm (14")
Half Letter 139.7 mm (5.5") 215.9 mm (8.5")
Cut sheet
Envelope
8" x 10"
5" x 7"
4" x 7.11"
4" x 6"
L (3R)
User defined
No.10 104.8 mm (4.125") 241.3 mm (9.5")
DL 110 mm 220 mm
C6 114 mm 162 mm
203.2 mm 254 mm
127 mm 178 mm
101.6 mm 180.6 mm
101.6 mm 152.4 mm
89 mm (3.5") 127 mm (5")
50.8-329 mm
(2-12.6")
127-1117.6 mm
(5-44")
1.2.2 Printable Area Size and Margins
Refer to the table and figure below for the printable area size and margins.
Table 1-7. Guaranteed Print Area
A B-L B-R C D
Minimum
margin
A
3 mm
(0.12")
Cut sheet
A
3 mm
(0.12")
C
B-R
3 mm
(0.12")
R-BL-B
12.5 mm
(0.12")
Borderless printing
D
20 mm
(0.12")
*
Envelope
B-L
Note * : Borderless printing is carried out by enlarging the image size wider than the paper size as
shown in the figure. The image width protruding from the paper size is shown below.
Table 1-8. Borderless Printing
Paper Size Top Bottom Left/Right
A4, Letter, 8" x 10",
5" x 7", 4" x 7.11"
4" x 6", L (3R) 2.82 mm (0.11") 3.60 mm (0.14") 2.54 mm (0.1")
PRODUCT DESCRIPTION Printer Specifications 12
2.96 mm (0.12") 4.02 mm (0.16") 2.54 mm (0.1")
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
1.2.3 Ink Cartridge
Type/color: EPSON-brand special ink cartridges
Table 1-9. Stylus C58/C59/ME 2
Color ECC Pacific, Asia (Other)
Black T0761 T0751
Cyan T0762 T0752
Magenta T0763 T0753
Yellow T0764 T0754
Table 1-10. Stylus C79/D78
Color Latin, Asia, Pacific Europe
Black T0731 T0711
Cyan T0732 T0712
Magenta T0733 T0713
Yellow T0734 T0714
Table 1-11. Stylus C90/C91/C92/D92
Color Latin Asia Europe CISMEA
Black
Cyan T0732
Magenta T0733
Yellow T0734
T0731
T0901
T0731
T0911*
T0732
T0912*
T0733
T0913*
T0734
T0914*
T0711 T0921
T0712 T0922
T0713 T0923
T0714 T0924
Print Capacity (TBD)
Stylus C58/C59/ME 2
Black Ink Cartridge: TBD pages/A4
(ISO/IEC10561 Letter Pattern at 360 x 720 dpi)
TBD pages/A4
(360x720 dpi, 5% duty)
Color Ink Cartridge: TBD pages/A4 (360 x 720 dpi, 5% duty for each color)
Stylus C79/D78/C90/C91/C92/D92
Black Ink Cartridge: TBD pages/A4
(ISO/IEC10561 Letter Pattern at 360 x 720 dpi)
TBD pages/A4
(360x720 dpi, 5% duty)
Color Ink Cartridge: TBD pages/A4 (360 x 720 dpi, 5% duty for each color)
Shelf life: Two years from production date (if unopened), six months after
opening package.
Storage Temperature
Table 1-12. Storage Temperature
Situation Storage Temperature Limit
When stored in individual boxes
When installed in main unit
-30 oC to 40 oC
o
F to 104oF)
(-22
-20 oC to 40 oC
(-4oF to 104oF)
1 month max. at 40 oC (104oF)
Dimension
Stylus C58/C59/ME 2
12.7 mm (W) x 43 mm (D) x 47 mm (H)
Stylus C79/D78/C90/C91/C92/D92
Note * : Except EHK.
12.7 mm (W) x 68 mm (D) x 47 mm (H)
C A U T I O N
The ink cartridge cannot be refilled.
The ink cartridge that passes the expiration date should not be used.
The ink in the ink cartridge freezes at -16 °C (3.2 oF). Ink thaws
and is usable after approximately three hours at 25 °C (77
o
F).
PRODUCT DESCRIPTION Printer Specifications 13
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
1.2.4 Black Ink Save Mode
Black ink save mode allows you to print images with color ink only when the remain-
ing amount of black ink is low. This mode can be selected when the remaining
amount of color ink is sufficient since black areas of the images are printed with a
mixture of other colors.
Supported OS: Windows 98, ME, 2000, XP, XP x64
Printing mode: Plain Paper & Text Mode (360 dpi)
Operating procedure
1. User carries out printing from an application.
2. The printer driver checks both the printing mode and the amount of remaining ink,
and displays the specific window if the conditions described below are all met.
• Selected printing mode supports black ink save mode.
• Remaining amount of black ink is less than 5%, or the status of the black ink
is “ink low”.
• Remaining amount of all the color ink is more than 10%, or the status of all
the color ink is NOT “ink low”.
Starts printing in black ink
save mode.
Starts printing in a normal
manner.
Starts printing in a normal
manner. This window will
not be displayed again until
the black ink cartridge is
replaced.
Flowchart 1-1. Black Ink Save Mode
1.3 Interface
Stylus C58/C59/ME 2 and Stylus C79/D78/C90/C91/C92/D92 provide an USB
interface.
1.3.1 USB Interface
Standard: Based on Universal Serial Bus Specifications Revision 1.1,
Universal Serial Bus Device Class Definition for Printing
Devices Version 1.1
Descriptors: Based on Design Specification for USB Device Requests and
USB Descriptors for EPSON USB Printer
Product ID: 0005h
Transfer rate: 12 Mbps (Full Speed Device)
Cable length: Under 2 meters (6.6 feet)
Device ID
Table 1-13. Device ID
Product
Name
Stylus C58
Stylus C59
ME 2
Device ID
<00H><4BH>
MFG:EPSON;
CMD:ESCPL2,BDC;
MDL:Stylus C58
CLS:PRINTER;
DES:EPSON<SP>Stylus C58;
<00H><4BH>
MFG:EPSON;
CMD:ESCPL2,BDC;
MDL:Stylus C59
CLS:PRINTER;
DES:EPSON<SP>Stylus C59;
<00H><3FH>
MFG:EPSON;
CMD:ESCPL2,BDC;
MDL:ME 2
CLS:PRINTER;
DES:EPSON<SP>ME 2;
Product
Name
Stylus C79
Stylus D78
Device ID
<00H><4BH>
MFG:EPSON;
CMD:ESCPL2,BDC;
MDL:Stylus C79
CLS:PRINTER;
DES:EPSON<SP>Stylus C79;
<00H><4BH>
MFG:EPSON;
CMD:ESCPL2,BDC;
MDL:Stylus D78
CLS:PRINTER;
DES:EPSON<SP>Stylus D78;
Note : Device IDs shown in the table above are for when IEEE1284.4 is invalid.
When IEEE1284.4 is valid, the line that starts with “CMD” changes to
“CMD:ESCPL2,BDC,D4,D4PX”.
PRODUCT DESCRIPTION Interface 14
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
1.4 General Specifications
1.4.1 Electrical Specifications
Primary power input
Table 1-14. Primary power input
100-120 V model 220-240 V model
Rated power supply voltage (ACV) 100 to 120 220 to 240
Input voltage range (ACV) 90 to 132 198 to 264
Rated current (A) 0.4 (max. 0.7) 0.2 (max. 0.4)
Rated frequency (Hz) 50 to 60
Input frequency range (Hz) 49.5 to 60.5
11 (ISO10561 Letter Pattern)
Power consumption (W)
Note 1: This product complies with the “Energy Star” standards.
2: If the printer is not operated for more than five minutes, the standby function reduces
the current to the motor to conserve power.
Dielectric strength
AC1000 Vrms for 1 min. or AC1200 Vrms for 1 sec. (100-120V version)
AC1500 Vrms for one min. (220-240V version)
1.4.2 Acoustic Noise
Noise level: Approx. 44 dB (according to ISO7779)
2.5 (Sleep mode) 3.0 (Sleep mode)
0.2 (Power off mode) 0.4 (Power off mode)
1.4.4 CE Marking
220-240V version
Low voltage directive 73/23/EEC: EN60950
EMC directive 89/336/EEC: EN5502 Class B, EN61000-3-2,
EN61000-3-3, EN55024
1.4.5 Environmental Performance
Table 1-16. Environmental Performance
Condition Temperature Humidity*
Operating
Not operating*
Note *1: After opening package
*2: No condensation
*3: One month at 40°C (104°F), 120 hours at 60°C (140°F)
*4: Under the following conditions:
Humidity (%)
10 to 35°C
(50 to 95°F)*3*
-20 to 60°C
1
(-4°F to 140°F)
20 to 80%*
4
5 to 85%
90
80
70
60
50
40
2
4
1 x 10-3 seconds
2 x 10-3 seconds
Impact Vibration
1G,
2G,
0.15G
0.50G
1.4.3 Safety Approvals
Table 1-15. Safety Approvals
100-120 V version 220-240 V version
Safety standards
EMI
UL60950
CSA C22.2 No.60950
FCC part15 subpart B class B EN 55022(CISPR Pub.22) class B
CSA C108.8 Class B AS/NZS CISPR22 class B
EN 60950
1.4.6 Durability
Total print life:10,000 pages (A4, Letter) or five years (whichever comes first)
Printhead life: Seven billion shots (per nozzle) or five years (whichever comes first)
30
20
27/80
10/50
30/86 35/95 40/10420/68
Temperature (°C/°F)
PRODUCT DESCRIPTION General Specifications 15
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
1.5 Control Panel
1.5.1 Buttons
The control panel contains following two buttons (non-lock type), which are used to set
and execute some operations. The functions of each button are described in the table
below.
Table 1-17. Operations
Button Function
Power Turns on or off this unit.
When Paper out occurred
Loads paper.
When Paper jam occurred
Ejects paper.
When Double feed occurred
Clears the error and resumes the printing.
When Ink end or No ink cartridge occurred
Maintenance
Power + Maintenance
Moves the carriage to ink-check position.
When the carriage is in the ink-check position
Moves the carriage slightly to check the adjacent ink cartridge.
When the carriage is in “Ink low” or “Ink out” position
Moves the carriage to the replacement position.
During printing
Cancels the current print job.
When pressed for three seconds
Cleans the printhead.
When the printer is turning on
Print a nozzle check pattern.
*
When the printer is on
Shuts down the printer.
1.5.2 Indicators
The control panel contains following two LED to indicate some status.
Table 1-18. Indicators
LED Function
Power [Green] Lights while the printer is turned on.
Lights: Paper out, Paper jam, Double feed, No ink cartridge,
Maintenance [Red]
Flashes: Ink low
Power Button
Ink end, Incorrect ink cartridge
Maintenance Button
Power LED
Maintenance LED
Figure 1-2. Control Panel
Note * : Hold down [Maintenance] first and press [Power]. Keep the buttons pressed for over
seven seconds.
PRODUCT DESCRIPTION Control Panel 16
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
1.5.3 Errors and Panel Status
Followings are the errors that occur on the printer:
Fatal error: Carriage control error.
Maintenance request: Waste ink pads need to be replaced.
Ink end: Ink has run out.
No ink cartridge: Ink cartridge(s) is not installed.
Incorrect ink cartridge: Non-genuine ink cartridge(s) is installed.
Paper jam: Paper remains in the paper path.
Paper out: Failed to load papers.
Double feed: Two or more papers have been fed during duplex printing.
Ink low (warning): Ink is running low.
Table 1-19. Errors and Panel Status
Printer Status
Power LED Maintenance LED
Turning the power off Flashes fast Off 1
Fatal error Off Flashes fast 2
Maintenance request Flashes alternately 3
Paper jam --- On 4
Paper out --- On 4
Double feed --- On 4
Ink cartridge replacement Flashes --- 5
Ink sequence Flashes --- 6
Incorrect ink cartridge --- On 7
No ink cartridge/Ink end --- On 7
Data processing Flashes --- 8
Ink low --- Flashes 9
Indicators
Priority
1.5.4 Printer Initialization
There are four kinds of initialization method, and the following explains each
initialization.
1. Power-on initialization
This printer is initialized when turning the printer power on, or printer recognized
the cold-reset command (remote RS command).
When printer is initialized, the following actions are performed.
(a) Initializes printer mechanism
(b) Clears input data buffer
(c) Clears print buffer
(d) Sets default values
2. Operator initialization
This printer is initialized when turning the printer power on again within 10
seconds from last power off, or printer recognized the -INIT signal (negative
pulse) of parallel interface.
When printer is initialized, the following actions are performed.
(a) Cap the printer head
(b) Eject a paper
(c) Clears input data buffer
(d) Clears print buffer
(e) Sets default values
3. Software initialization
The ESC@ command also initialize the printer.
When printer is initialized, the following actions are performed.
(a) Clears print buffer
(b) Sets default values
4. Power-on initialization except I/F
The printer recognized the IEEE 1284.4 “rs” command.
When printer is initialized, the following action is performed.
(a) Initializes printer mechanism
(b) Clears input data buffer
(c) Clears print buffer
(d) Sets default values except I/F
Turning the power on On --- 10
Note 1: “---”: no change
2: When multiple errors occur at the same time, the one with higher priority will be indicated.
PRODUCT DESCRIPTION Control Panel 17
OPERATING PRINCIPLES
CHAPTER
2
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
2.1 Overview
This section describes the operating principles of the printer mechanism and electrical
circuit boards. The printer mechanism does not differ between the Stylus C58/C59/
ME2 and Stylus C79/D78/C90/C91/C92/D92.
PF motor
PF roller
2.2 Printer Mechanism
Printer mechanism of Stylus C58/C59/ME 2 and Stylus C79/D78/C90/C91/C92/D92
consists of printhead, carriage mechanism, paper loading/feeding mechanism, and ink
system.
As in the case of conventional models, Stylus C58/C59/ME 2 and Stylus C79/D78/
C90/C91/C92/D92 has two motors; one is a stepping motor for paper loading/feeding
mechanism, and the other is a DC motor for carriage mechanism.
Papers are fed from the backside and ejected from the front side of the printer.
Paper feeding mechanism feeds papers using the LD roller and the retard roller.
Star wheel
rollers
Carriage unit
Paper eject
roller
CR lock lever
Cap unit
CR timing belt
CR encoder
sensor
Retard roller
Compression
spring
LD roller
PE sensor
Cam, large
Cam, small
Clutch
Pump unit
CR motor
Figure 2-1. Printer Mechanism Outline
OPERATING PRINCIPLES Overview 19
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
2.2.1 Printhead Specifications
The Printhead of this product is a D2-CHIPS type.
Nozzle configuration
Monochrome 90 nozzles
Color 29 nozzles x 3 (Cyan, Magenta, Yellow)
The following shows the arrangement of the nozzles and the color arrangement of each
nozzle line when viewed the printhead from behind.
2.822mm
(40/360 inch)
C#29
Cyan: 29nozzles
C#1
M#29
Magenta: 29nozzles
K#90
K#89
Paper Loading
Black
Color
Direction
2.2.2 Carriage Mechanism
Main components of the carriage mechanism are carriage unit (including printhead,
CR encoder sensor), CR motor, timing belt, and CR scale.
2.2.2.1 CR Motor Specifications
Table 2-1. CR Motor Specifications
Item Specification
Type Motor with DC brush
Drive voltage +42 V ± 5% (applied voltage to the driver)
Electric resistance 28.8 Ω ± 10%
Inductance 20.1 mH ± 25%
Drive method PWM, constant-current chopping
Drive IC A6628
M#1
Y#29
Yellow: 29nozzles
Y#3
Y#2
Y#1
Carriage Moving Direction
K#3
K#2
K#1
0.2117mm
(1/120 inch)
Figure 2-2. Nozzle Rear View
OPERATING PRINCIPLES Printer Mechanism 20
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
2.2.3 Paper Feeding Mechanism
Paper loading/feeding mechanism consist of CR lock lever inside the ink system, LD
roller shaft (including clutch mechanism), and ASF unit.
CR lock lever and clutch mechanism play an important role in paper loading
mechanism. Refer to 2.2.3.2 Drive Process (p21) for details.
2.2.3.1 PF Motor Specifications (For both ASF and Pump motor)
Table 2-2. PF Motor Specification
Item Specification
Type 4-phase, 48-pole PM stepping motor
Drive voltage +42 V ± 5% (applied voltage to the driver)
Wire wound
resistance
Inductance 5.5 mH ± 20% (1KH, 1Vrms)
Drive method
Drive IC A6628
2-2 phase, 1-2 phase, W1-2phase, 2W1-2phase, 4W1-2 phase
4.3 Ω +8 / -12% (per one phase at 20 °C)
Bipolar drive
constant-current drive
2.2.3.2 Drive Process
1. Drive of the PF motor is always transmitted to the paper eject roller and the PF
roller, however, it is not transmitted to the LD roller and the retard roller owing to
the clutch of the LD roller shaft.
2. The carriage unit moves to the ASF trigger position once the paper loading
command is received.
3. PF motor is rotated counter clockwise, and the clutch is released by the CR lock
lever.
4. After the clutch is released, the PF motor rotates clockwise. Drive is transmitted to
the LD roller and the paper loading operation begins.
5. During paper loading operation, papers are fed from the ASF unit to inside the
printer by the rotating movement of the two cams of the LD roller.
Cam, large:releases hopper
Cam, small:releases paper back lever
6. Once a sheet of paper is fed, the hopper and the paper back lever bring back rest of
the papers to the position in readiness by the rotating movement of the two cams
mentioned above.
7. When the LD roller is turned a full circle, the CR lock lever release the clutch and
the drive to the LD roller is interfered.
OPERATING PRINCIPLES Printer Mechanism 21
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
2.2.4 Ink System Mechanism
The Ink system mechanism consists of pump mechanism and capping mechanism that
includes wiper mechanism.
2.2.4.1 Pump Unit Mechanism
When the PF motor turns, power is always transmitted to the ink system.
Table 2-3. PF Motor Rotational Direction & Ink System Mechanism
Direction* Function
Counterclockwise Absorbs the ink by the Pump Unit
Clockwise Release pump.
Note * : The PF Motor rotational direction = seen from the left side of the printer.
2.2.4.2 Capping Mechanism
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.
2.3 Electrical Circuit Operating Principles
The electric circuit of Stylus C58/C59/ME 2 and Stylus C79/D78/C90/C91/C92/D92
consists of the following boards:
Main board: C664 Main Board (Stylus C58/C59/ME 2/C79/D78)
C683Main Board (Stylus C90/C91/C92/D92)
CSIC Board: C654 Head Board (Stylus C58/C59/ME 2/C79/D78)
CR contact Module (Stylus C90/C91/C92/D92)
Power supply board: C664 PSB/PSE Boards
Below is a block diagram of C664 Main Board, C664 PSB/PSE Boards, and C654
Head Board.
Printer Mechanism
CR Motor
PF Motor
C664/C683 Main Board
Printhead
Sensors
CSIC Board/
C654 Head Board/
CR contact Module*
+42V
C664PSB/PSE Board
Note * : Varies depending on the model.
Stylus C58/C59/ME 2: CSIC Board
Stylus C79/D78 C654 Head Board
Stylus C90/C91/C92/D92: CR contact Module
PowerOFF
Figure 2-3. Electrical Circuit Block Diagram
OPERATING PRINCIPLES Electrical Circuit Operating Principles 22
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
2.3.1 C664 PSB/PSE Board
In the PSB/PSE Boards of Stylus C58/C59/ME 2 and Stylus C79/D78/C90/C91/C92/
D92, the simulated oscillating stimulation flyback converter circuit method is used, and
it supplies +42 VDC to the drive line. The application of the output voltage is described
below.
C664PSB Board:100-120V
C664PSE Board:220-240V
AC voltage input from AC inlet first goes through filter circuit that removes high
frequency components and is then converted to DC voltage via the rectifier circuit and
the smoothing circuit. DC voltage is then led to the switching circuit and FET QF1
preforms the switching operation. By the switching operation of the primary circuit,
+42VDC is generated and stabilized at the secondary circuit.
2.3.2 C664/C683 Main Board
The following lists the components of the logic circuit on C664/C683 Main Board.
Logic line (CPU-ASIC 4 in 1, Flash-ROM and so on)
Motor control/drive circuit (CR Motor, PF Motor)
Head control/drive circuit
USB I/F circuit
Sensor circuit
Reset circuit, EEPROM circuit
Table 2-4. C664/C683 Main Board Major Components and Primary Functions
IC Location Function
FLASH ROM IC3 3.3 V drive 4 M bit flash ROM that stores the program.
Reset Regulator IC1 3.3V/1.5V generate regulator, 2 ch reset circuit
EEPROM IC4 Makes back up of default setting values and parameters
Motor Driver IC6
Head Driver IC7 Generates trapezoidal waveform, drives 5 V
ASIC IC10
Drives CR/PF motors, controls PWM by the program timer,
adjusts 5 V, drives 42 V
Drives CPU (H8S/2674 base), internal 8 K byte x 4 RAM,
24 Mhz, 3.3 V/1.5V
OPERATING PRINCIPLES Electrical Circuit Operating Principles 23
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
Figure 2-4. C664 Main Board Block Diagram (Stylus C58/C59/ME 2)
OPERATING PRINCIPLES Electrical Circuit Operating Principles 24
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
Figure 2-5. C664/C683 Main Board Block Diagram (Stylus C79/D78/C90/C91/C92/D92)
OPERATING PRINCIPLES Electrical Circuit Operating Principles 25
TROUBLESHOOTING
CHAPTER
3
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
3.1 Overview
This chapter describes how to solve problems.
W A R N I N G
C H E C K
P O I N T
Be careful to avoid electric shocks when checking the electrical
circuit boards (C664 MAIN, PSE and B circuit boards) while
the power is turned on.
Touching an FET, transistor or heat sink with one hand while
touching a metal part of the mechanism with the other hand
could result in an electric shock, so carefully avoid this.
After initial filling of ink has been repeated several times,
immediate moving or tilting of the printer could result in
leaking of ink that has not been completely absorbed by the
Waste Ink Pad. When initial filling of ink has been repeated
several times, check the ink remaining in the tip of the Waste
Ink Tube and the waste ink not absorbed by the Waste Ink
Pad before moving the printer.
Disassembly and reassembly of parts is often required when
identifying the causes of problems. The parts should be
disassembled and re-assembled correctly while referring to
DISASSEMBLY/ASSEMBLY (p30) so that the operation and
status of each check item can be correctly verified.
Some individual part and units may require adjustment once
they are removed or replaced. If removing or replacing parts
which have specific instructions for adjustment included in
DISASSEMBLY/ASSEMBLY (p30), be sure to make these
adjustments after repairing the problem location.
3.1.2 Preliminary Checks
Before starting troubleshooting, be sure to verify that the following conditions are all met:
The power supply voltage must be within the specification limits.
(Measure the voltage at the electrical outlet.)
The power cable must be free from damage, short circuit, or breakage, and must
not be miswired.
The printer must be grounded properly.
The printer should not be located in a place where it can be exposed to too high or
low temperature, too high or low humidity, or abrupt temperature change.
The printer should not be located near waterworks, near humidifiers, near heaters
or near flames, in a dusty atmosphere or in a place where the printer can be
exposed to blast from an air conditioner.
The printer should not be located in a place where volatile or inflammable gases
are present.
The printer should not be located in a place where it can be exposed to direct
sunlight.
The printer must be located in a well-ventilated place.
The printer must be placed on a strong and steady level table (without an
inclination larger than five degrees).
Be sure to use papers that conform to the specifications.
There should be no errors in handling of the printer.
Check the inside of the printer, and remove foreign matters if any, such as paper
clips, staples, bits of paper, paper dust or toner.
Clean the inside of the printer and the rubber rollers.
3.1.1 Specified Tools
This printer does not require any specified tools for troubleshooting.
TROUBLESHOOTING Overview 27
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
3.2 Troubleshooting With LED Error Indications
LED error display, cause, and remedy are explained here.
Table 3-1. Troubleshooting With LED Error Indications
Error
Ink end/ No ink cartridge/
Incorrect ink cartridge
Paper Out --- On
Double feed error --- On
Paper jam --- On
Maintenance request
(Waste ink overflow)
Fatal error Off Flashes fast
LED status
Power Maintenance
--- On
Flashes alternately
Cause Remedy
• Ink inside Bk, Y, M, C cartridges has run out.
• Ink cartridge(s) is not installed.
• Non-genuine ink cartridge(s) is installed.
• Paper loading operation is executed when there is no paper.
• Papers stopped before the PE Sensor or could not be fed.
• Papers are fed without being placed against the right edge guide.
• Connector of the PE sensor is disconnected.
• When performing duplex printing, blank paper is ejected.
• The printer detected that the paper is too long upon ejection.
Even though paper feeding operation is carried out for
predetermined times, leading edge or back-end of the paper could
not be detected.
As a result of cleaning and flushing, total emission of ink has
exceeded the specific level.
• Home position of the carriage could not be detected.
• Abnormal external pressure is applied to the printer when the
power is on.
• Carriage movement is interfered during printing.
• Check the ink cartridge(s) and reinstall it correctly.
• Replace the ink cartridge(s) with a genuine one.
1. If there is no paper on the paper tray, load papers.
2. If the paper has stopped halfway, remove the paper, check if the
paper is not bent, fan the paper, and load it against the edge guide.
3. Press the [Maintenance] button to release the error.
1. Remove the blank paper, or check the paper size.
2. Press the [Maintenance] button to eject the paper and release the
error.
1. Press the [Maintenance] button on the panel.
2. If paper jam occurred again after pressing the button, open the
printer cover and remove all the papers inside the printer and
papers set on the hopper.
3. Making sure there is no paper inside the printer, load paper on the
hopper and press [Maintenance].
Replace the waste ink pad, and reset the waste ink counter using the
adjustment program. Refer to Chapter 5 “ADJUSTMENT” (p.66) for
details.
1. Turn the power off, wait for a few seconds, and turn the power
back on again.
2. If the fatal error still appears, turn the power off, remove the
papers on the hopper, and check the following:
• Open the printer cover, check the ink cartridges, and reinstall
them correctly.
• Check is there is no foreign material or papers inside the printer.
If there is any, remove them.
3. Turn the printer power on.
Note : “---”: no change.
TROUBLESHOOTING Troubleshooting With LED Error Indications 28
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
3.3 Troubleshooting for Motors and Sensors
Motor
Table 3-2. Motor Resistance and Check Points
Motor name Type Location Check point Resistance
CR motor Motor with DC brush CN5 Pin 1 & 2 28.8 Ω ± 10%
PF motor 4-phase, 200-pole HB stepping motor CN6
Pin 1 & 3
Pin 2 & 4
Sensor
Table 3-3. Sensor Check
Sensor name Detecting system Location Signal level Sensor status
PE sensor Transmission photo interrupter CN7 pin 1 & 2
2.6 V or more Paper loaded
0.4 V or less No paper
4.3 Ω ± 8%/-
ºC)
12%(20
TROUBLESHOOTING Troubleshooting for Motors and Sensors 29
DISASSEMBLY/ASSEMBLY
CHAPTER1
4
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.1 Overview
This section describes procedures for disassembling the main components of the
product. Unless otherwise specified, disassembled units or components can be
reassembled by reversing the disassembly procedure.
Procedures which, if not strictly observed, could result in personal injury are described
under the heading “WARNING”.
“CAUTION” signals a precaution which, if ignored, could result in damage to equipment.
Important tips for procedures are described under the heading “CHECK POINT”.
If the assembly procedure is different from the reversed disassembly procedure, the
correct procedure is described under the heading “REASSEMBLY”.
Any adjustments required after reassembly of components or parts are described under
the heading “ADJUSTMENT REQUIRED”.
When you have to remove any components or parts that are not described in this
chapter, refer to the exploded diagrams in the appendix.
4.1.1 Precautions
See the precautions given under the handling “WARNING” and “CAUTION” in the
following columns when disassembling or assembling Stylus C58/C59/ME 2 and
Stylus C79/D78/C90/C91/C92/D92.
C A U T I O N
Make sure that there is enough work space for disassembly/
reassembly.
Use only recommended tools for disassembling, assembling or
adjusting the printer.
Observe the specified torque when tightening screws.
Apply lubricants as specified.
(See “6.1.3 Lubrication (p. 78)” for details.)
Since a prototype was used to illustrate these disassembly and
reassembly procedures, the appearance of some parts may
differ from those on actual product. The procedures themselves,
however, are accurate for the retail model.
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.
W A R N I N G
Disconnect the power cable before disassembling or assembling
the printer. If you need to work on the printer with power
applied, strictly follow the instructions in this manual.
Always wear gloves for disassembly and reassembly to avoid
injury from sharp metal edges.
To protect sensitive microprocessors and circuitry, use static
discharge equipment, such as anti-static wrist straps, when
accessing internal components.
DISASSEMBLY/ASSEMBLY Overview 31
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.1.2 Tools
Use only specified tools to avoid damaging the printer.
Table 4-1. Tools
Name Supplier Parts No.
(+) Phillips screwdriver #1
(+) Phillips screwdriver #1
Flathead screwdriver
Tweezer
EPSON 1080530
EPSON 1080532
EPSON 1080527
EPSON 1080561
4.1.3 Screws
Screws used on Stylus C58/C59/ME 2 and Stylus C79/D78/C90/C91/C92/D92 are
shown below.
Table 4-2. Screws
No. Image Name Type
C.B.S. 3 x 6 C.B.S-TITE SCREW
1
C.B.S. 3 x 8 C.B.S-TITE SCREW
Table 4-2. Screws
No. Image Name Type
C.B.P. 3 x 8 C.B.P-TITE SCREW
7
C.P. 3 x 4 C.P. SCREW
9
2
C.B.P. 2.5 x 8 C.B.P-TITE SCREW
5
C.B.P. 3 x 6 C.B.P-TITE SCREW
6
DISASSEMBLY/ASSEMBLY Overview 32
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.1.4 Work Completion Check
If any service is made to the printer, use the checklist shown below to confirm all
works are completed properly and the printer is ready to be returned to the user.
Table 4-3. Work Completion Check
Classification Item Check Point Status
Self-test Is the operation normal?
ON-line Test Is the printing successful
Printhead
Carriage
Mechanism
Main Unit
Paper Feeding
MEchanism
Adjustment
Lubrication
Function ROM Version Version:
Specified
Adjustment
Specified
Lubrication
Is ink discharged normally from all
the nozzles?
Does it move smoothly?
Is there any abnormal noise during its
operation?
Is the CR Motor at the correct
temperature? (Not too hot to touch?)
Is paper advanced smoothly?
No paper jamming?
No paper skew?
No multiple feeding?
No abnormal noise?
Is the PF Motor at correct
temperature?
Is the paper path free of any
obstructions?
Are all the adjustment done
correctly?
Are all the lubrication made at the
specified points?
Is the amount of lubrication correct?
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Table 4-3. Work Completion Check
Classification Item Check Point Status
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Packing
Others
Ink Cartridge
Protective
materials
Attachments,
Accessories
Are the ink cartridges installed
correctly?
Have all relevant protective materials
been attached to the printer?
Have all the relevant items been
included in the package?
4.1.5 Caution After Repair
Before shipping the product after repair, be sure to secure the CR Unit following the
procedure below.
HOW TO SECURE THE CR UNIT BEFORE PACKING
(1) Move the CR Unit to the Home position.
(2) Lock the Carriage Lock toward the front of the printer with a flathead screwdriver.
(See 4.5.2 Printhead (p41))
(3) Move the CR Unit to the center slightly until it comes in contact with the Carriage Lock.
(4) Attach the center portion ( ) of a strong tape to the Cartridge Cover located on the carriage.
(5) Attach the right portion ( ) of the strong tape to the Upper Housing.
(6) Attach the left portion ( ) of the strong tape to the left side of the carriage.
(7) Check to see that the CR Unit can move slightly between the Home position and the
Carriage Lock position. Then bring the CR unit back into contact with the Carriage
Lock, and pack the printer.
Carriage Lock
CR Unit
Figure 4-1. Securing CR Unit
Strong Tape
Upper Housing
Cartridge Cover
DISASSEMBLY/ASSEMBLY Overview 33
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.1.6 Procedural Differences between the Models
Some parts installed on Stylus C58/C59/ME 2 and Stylus C79/D78/C90/C91/C92/D92 differ from each other as described in the table below,
and for that, there are some procedural differences between the models. See the respective pages for details.
C H E C K
P O I N T
Since Stylus C79/D78/C90/C91/C92/D92 model was used to make this manual, the
appearance of some parts may differ from those on Stylus C58/C59/ME 2 model. The
procedures are the same for both models unless otherwise noted except for the one
described in the table below.
Table 4-4. Procedural Differences between Models
Item Description Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Reference Page
Cartridge Cover
Hinge
Sub FFC Guide
For Stylus C58/C59/ME 2,
see 4.6.1 Printhead (p61)
For Stylus C79/D78/C90/C91/C92/
D92,
see 4.5.2 Printhead (p41)
For Stylus C58/C59/ME 2,
4.5.8 EJ Frame Assy/EJ Roller
(p51)
For Stylus C79/D78/C90/C91/C92/
D92,
see 4.5.9 Main Frame (p53)
Printhead
Shield Plates/
GND Plate M/B/
CR Unit Holder
Stylus C58/C59/ME 2
You need to cut off the Cartridge
Cover Hinge and remove the
Cartridge Cover to take out the
Printhead.
Stylus C79/D78/C90/C91/C92/D92
You need to remove the Sub FFC
Guide to take out the Printhead.
Stylus C58/C59/ME 2
equipped with CR Unit Holder
Stylus C79/D78/C90/C91/C92/D92
equipped with Shield Plate L/Shield
Plate Upper/Shield Plate Front/
GND Plate M/B
Cartridge Cover
see
For Stylus C58/C59/ME 2,
see 4.6.2 Waste Ink Pads (p64)
For Stylus C79/D78/C90/C91/C92/
D92,
see 4.5.11 Waste Ink Pads (p58)
Waste Ink Pad
Stylus C58/C59/ME 2
7 parts
Stylus C79/D78/C90/C91/C92/D92
9 parts
DISASSEMBLY/ASSEMBLY Overview 34
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.2 Disassembly Procedures
This section explains the procedures for disassembling the product.
Unless otherwise stated, reassembly should be carried out in the reverse order of the
disassembly procedure.
For detailed engagement relations among main components, refer to the exploded
diagrams in the Appendix.
START
“4.3.1 Upper
Housing” (p36)
“4.5.1 Hopper”
(p40)
“4.4.1 Main
Board” (p38)
“4.5.9 Main
Frame” (p53)
“4.5.2 Printhead”
(p41)
“4.5.3 CR Scale”
(p44)
“4.5.4 CR Motor”
(p45)
“4.5.5 CR Unit/
Timing Belt”
(p46)
C H E C K
P O I N T
Since Stylus C79/D78/C90/C91/C92/D92 models were used to
illustrate these disassembly and reassembly procedures, the
appearance of some
parts may differ from those on Stylus C58/C59/ME 2 models. The
procedures themselves, however, are accurate for all the models
except for the printhead removal procedure.
“4.5.6 Ink System removal” (p48)
Ink System (Cap
Assy) (p48)
Note: Shown in the dotted-line is not the
shortest procedure, but is necessary to
proceed to the next step.
“4.5.8 EJ Frame
Assy/EJ Roller”
(p51)
*“4.5.12 PF
Roller” (p59)
*“4.5.13 PF
Motor” (p60)
“4.5.7 Power
Supply Board”
(p50)
*
“4.5.10 LD Roller/
ASF Unit” (p56)
*“4.5.11 Waste
Ink Pads” (p58)
*Ink System
(Pump Assy) (p48)
* The Shortest Way to Remove the Main Frame
If the parts to repair is the ones marked with “*” in the flowchart
only, there’s another way to remove the parts until the Main
Frame shown in the flowchart. Refer to “4.7 The Shortest Way to
Remove the Main Frame. (p. 65) ”
Figure 4-2. Disassembling Flowchart
DISASSEMBLY/ASSEMBLY Disassembly Procedures 35
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.3 Removing Housing
4.3.1 Upper Housing
Part/Unit that should be removed before removing Upper Housing
None
Removal Procedure
C A U T I O N
1. Remove the screws (x2) on the back of the printer.
2. While releasing the tab (x1) on the back, release the tabs (x2) on both sides of
When releasing the tabs on the sides, be careful not to scratch the
surface with a screwdriver. The coating is fragile and can be easily
damaged.
the printer with a flathead screwdriver.
3. Push the marked area ( )to release the tabs (x2, ) on the front side of the
printer (Arrows
).
4. Push the dotted area ( ) from inside as shown in the figure to release the
tab (x1,
Push here
Upper Housing
) in the middle.
Push here
Upper Housing
Push here from inside
Figure 4-4. Removing Upper Housing (2)
5. Remove the Upper Housing taking care not to scratch the Hopper with the
tabs.
C.B.S 3X6 (Torque: 6±1Kgf.cm)
Hopper
Figure 4-3. Removing Upper Housing (1)
:Tab
Upper Housing
Figure 4-5. Removing Upper Housing (3)
DISASSEMBLY/ASSEMBLY Removing Housing 36
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
The Ink Position Label is not included in the Upper Housing.
When installing the Upper Housing, order the label separately
and attach the Ink Position Label to the place shown below.
Ink Position Label
Install the label in this position with
Black to the right.
Upper Housing
Figure 4-6. Installing Ink Position Label
In Stylus C79/D78/C90/C91/C92/D92’s case:
• When reassembling the Upper Housing, be sure to check there
is no ink on the Shield Plate Upper. If there is some ink stein on
it, be sure to wipe it out before reassembling.
• When installing the Upper Housing, be sure to check the GND
Plate M/B comes in contact with the Shield Plate Upper.
If removing and reassembling the Shield Plate Front for some
reasons, be sure to follow the steps below.
Removing Shield Plate Front
1. Peel off the acetate tape and remove the grounding spring 1,2.
2. Bend the four protrusions of each of the two holes outwardly with a
flat-head precision driver or the like and remove the Shield Plate Front.
NOTE. After removing, be sure to straighten the protrusions of
the holes to restore their original state.
Reassembling Shield Plate Front
1. Insert the two holes of the plate over the dowels on the base
frame as far as they will go.
2. Install the grounding spring 1, 2 and attach a 20 x 18 mm piece of
acetate tape positioning it as described/shown below.
• Leaving a space of 5mm from the edge (A), attach the right 6-
7mm-width portion of the tape to the Shield Plate Front. Fold
the tape along the edge (B), and wrap the acute edge of the
plate. Be careful not to let the tape run over the frame edge.
NOTE 1. After reassembling, make sure the plate is kept in
absolute contact with the frame.
NOTE 2. When replacing the Base Frame, remove the Shield Plate
Front from the current Base Frame and reinstall it to a
new one as the Base Frame supplied as an ASP does not
include the part.
Front Left
Grounding Spring
Holes with protrusions & Dowel
Shield Plate Front
Upper Housing
Acetate Tape: 20mm x 18mm
m
m
5
:
A
Shield Plate Upper
m
Figure 4-7. Shield Plate Upper
mm
7
-
6
:
B
m
0
2
:
L
Figure 4-8. Removing and reassembling Shield Plate Front
DISASSEMBLY/ASSEMBLY Removing Housing 37
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.4 Removing Board
CN3
4.4.1 Main Board
Part/Unit that should be removed before removing Main Board
Upper Housing /Hopper
Removal Procedure
1. Peel off the acetate tapes (x2) from the Main Frame.
2. Disconnect the following connector cables (x4) and FFCs (x2) from the
connectors on the Main Board Assy.
• CN1: Head FFC
• CN3: Head FFC (Backside)
• CN5: PE Detector Connector Cable
• CN6: PF Motor Connector Cable
• CN7: CR Motor Connector Cable
• CN8: Power Supply Board Connector Cable
3. Remove the screws (x4), and remove the GND Plate M/B and the Main Board
Assy.
FFCs
Main Board Assy.
GND Plate
CN1
CN7
CN5
CN8
CN6
Figure 4-10. Connector Layout of Main Board
4. Remove the Grounding Plate Clip from the Main Board Assy.
5. Remove the Shield Plate from the Main Board.
Main Board Assy.
Shield Plate
Connectors
C.B.S 3X6 (Torque: 8±1Kgf.cm)
Figure 4-9. Removing Main Board (1)
Grounding Plate Clip
Figure 4-11. Removing Main Board (2)
DISASSEMBLY/ASSEMBLY Removing Board 38
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
A D J U S T M E N T
R E Q U I R E D
After replacing the Main Board, perform the following adjustment.
(Refer to Chapter 5 “ADJUSTMENT”)
1. “EEPROM data copy”(only after replacement)
2. “Destination Setting” (only after replacement*)
3. “USB ID Input” (only after replacement*)
4. “Waste Ink Pad Counter” (Ink Pads must be replaced)
5. “Head ID Input” (only after replacement*)
6. “TOP Margin Adjustment” (only after replacement*)
7. “First Dot Adjustment” (only after replacement*)
8. “Head Angular Adjustment” (only after replacement*)
9. “Bi-D Adjustment” (only after replacement*)
10. “PF Band Adjustment” (only after replacement*)
11. “CR Heat Protection Control” (only after replacement*)]
Note * : (EEPROM Copy NG)
DISASSEMBLY/ASSEMBLY Removing Board 39
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5 Disassembling Printer Mechanism
4.5.1 Hopper
Part/Unit that should be removed before removing Hopper
Upper Housing
Removal Procedure
1. Pull open the Bearing slightly (Arrow ), to release the guide pin (A).
2. Remove the Hopper (Arrow ) pulling out the guide pin (B).
3. Remove the Compression Spring 1.94.
Guide Pin (A)
Bearing
Before installing the Hopper, be sure to adjust the position of the
LD Roller following the steps below.
1. Unlock the Carriage Lock. (See “4.5.2 Printhead” (p41))
2. Move the CR Unit to the center of the printer.
3. Adjust the position of LD Roller turning the EJ Roller
clockwise.
• LD Roller position: the flat part facing inward.
• Paper Back Lever position: inner most.
Flat part of LD Roller
Inward
Paper Back Lever
EJ Roller
Compression Spring 1.94
Hopper
Guide Pin (B)
Figure 4-13. Installing Hopper and Compression Spring 1.94
Figure 4-12. Removing Hopper and Compression Spring 1.94
A D J U S T M E N T
R E Q U I R E D
After replacing the Hopper, perform the following adjustment.
(Refer to Chapter 5 “ADJUSTMENT”)
1. “TOP Margin Adjustment”
2. “PF Band Adjustment”
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 40
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
2.
4.5.2 Printhead
C H E C K
P O I N T
The removal procedures differ depending on the model.
For Stylus C58/C59/ME 2, see “4.6.1 Printhead” (p61).
Open the Cartridge Cover and remove all the Ink Cartridges from the CR Unit.
3. Release the FFCs from the tabs.
FFCs
Cartridge Cover
Part/Unit that should be removed before removing Printhead
Upper Housing
Removal Procedure
1. Unlock the Carriage Lock with a flathead screwdriver or a similar tool, and
move the CR Unit to the center of the printer.
Locked
Carriage Lock
Unlocked
Tabs
Figure 4-15. Releasing FFCs
4. Disconnect the Head FFCs (x2) that are connected to the CSIC Board and the
CR Encoder Board.
Head FFCs
CR Unit
Figure 4-16. Disconnecting Head FFCs
Figure 4-14. Unlocking Carriage Lock and Moving CR Unit to the Center
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 41
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
5. Release the tabs (1) and (2) with a flathead precision screwdriver, and remove
the Holder Board Assy upward.
Tab (1)
CR Unit
Tab (1)
Holder
Board Assy.
Tab (2)
CR Unit
Tab (2)
Tab (1)
Tab (2)
6. Release the tab and pull out the blade of the Sub FFC Guide from the slit, and
remove the Sub FFC Guide pulling out the guide pin (x1) from the notch.
Blade
Slit
Notch
Guide Pin
Sub FFC Guide
Notch
Figure 4-18. Removing Sub FFC Guide
C A U T I O N
Do not touch or damage the nozzles or the ink supply needles of the
Printhead.
7. Remove the screw (x3) and lift up the Printhead with a longnose pliers.
Holder Board Assy
Figure 4-17. Removing Holder Board Assy
C.B.P 2.5X8 (Torque: 3±1Kgf.cm)
Figure 4-19. Removing Printhead (1)
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 42
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
8. Remove the Head FFC (x1) from the connector (x1), and remove the
Printhead.
Head FFC
Printhead
When installing the Holder Board Assy, make sure to check if
the assy is properly installed in the right position. The assy is
likely to be installed in the wrong position.
There’s no need to remove the Cartridge Cover, when replacing
the Print Head of the Stylus C79/D78. But if the replacement is
required for some reasons, refer to “4.6.1 Printhead” (p61) for
the replacement procedures.
The Ink Position Label is not included in the Cartridge Cover.
When replacing the Cartridge Cover, order the label separately
and attach the Ink Position Label to the place shown below.
Figure 4-20. Removing Printhead (2)
When installing the Sub FFC Guide, follow the steps below.
1. Insert the blade between the ribs.
2. Insert the guide pin into the notch.
3. Push down and secure the Sub FFC Guide in place.
Sub FFC Guide
Guide Pin
Notch
Ribs
Blade
A D J U S T M E N T
R E Q U I R E D
Ink Position Label
Install the label in this position with
Black to the right.
Cartridge Cover
Figure 4-22. Installing Ink Position Label
After removing/replacing the Printhead, perform the adjustment in
the following order. (Refer to Chapter 5 “ADJUSTMENT”)
1. “Ink Charge” (only after replacement)
2. “Head ID Input” (only after replacement)
3. “TOP Margin Adjustment”
4. “First Dot Adjustment”
5. “Head Angular Adjustment”
6. “Bi-D Adjustment”
7. “PF Band Adjustment”
Figure 4-21. Installing Sub FFC Guide
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 43
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.3 CR Scale
C A U T I O N
Part/Unit that should be removed before removing CR Scale
Upper Housing
Removal Procedure
1. Release the right end of the CR Scale from the tab.
2. Release the CR Scale from the slit of the CR Encoder Sensor.
Pay attention to the following instructions:
• Do not touch the CR Scale with bare hands.
• Do not damage the CR Scale.
• Do not stretch Extension Spring 3.289 too much.
Stylus C58/C59/ME2’s Case
Tab
CR Scale
Stylus C79/D78’s Case
CR Scale
3. Release the Extension Spring 3.289 from the hook of the Main Frame.
4. Rotate the CR Scale 90 degrees as shown in the figure and remove the scale
from the Main Frame.
Chipped
90 º
CR Scale
Hook
Extension Spring 3.289
Tab
Figure 4-24. Removing CR Scale (3)
When installing the CR Scale, pay attention to the following
instructions.
The CR Scale must be set between the sides of the CR Encoder
Sensor, but not touching either side. If the CR Scale is rubbing
against either wall (emitter or receiver), it should be reinstalled.
Chipped part of the CR Scale should be facing upward.
Extension Spring 3.289 should not be twisted.
Slit of CR Encoder Sensor
CR Scale
Figure 4-23. Removing CR Scale (1)
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 44
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.4 CR Motor
Part/Unit that should be removed before removing CR Motor
Upper Housing /Hopper /CR Scale
Removal Procedure
1. Disconnect the Head FFCs from the Main Board, and release the CR Motor
connector cable from the tabs (x5) on the Main Frame.
2. Disconnect the CR Motor Connector Cable from the Main Board.
Tabs
C A U T I O N
CR Motor
Head FFCs
CR Motor Connector Cable
Main Board
Figure 4-25. Disconnecting CR Motor Connector Cable
After releasing the Timing Belt, temporarily secure the belt to the
Cartridge Cover with a tape or the like so as not to allow the grease
to come in contact with the Timing Belt. Contaminating the belt
with grease can result in malfunction of the printer.
3. Loosen the tension of the Timing Belt by pressing the Driven Pulley Holder in
the direction of the arrow as shown in the figure, and release the Timing Belt
from the pinion gear of the CR Motor.
4. Remove the screws (x2), and remove the CR Motor from the Main Frame.
Driven Pulley Holder
Timing Belt
CR Motor
Pinion Gear
Timing Belt
C.B.S 3X6 (Torque: 6±1Kgf.cm)
Main Frame
Figure 4-26. Releasing Timing Belt and Removing CR Motor
A D J U S T M E N T
R E Q U I R E D
After replacing the CR Motor, perform the following adjustment.
(Refer to Chapter 5 “ADJUSTMENT”)
1. “First Dot Adjustment”
2. “Head Angular Adjustment”
3. “Bi-D Adjustment”
4. “CR Heat Protection Control” (only after replacement)
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 45
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.5 CR Unit/Timing Belt
Part/Unit that should be removed before removing CR Unit/Timing Belt
Upper Housing /Hopper /Print Head /Ink System (Cap Assy)/CR Scale/CR Motor
C A U T I O N
Removal Procedure
CR Unit Removal
1. Remove the screw (x1), and remove the CR Scale Holder.
• In the case of Stylus C58/C59/ME2
2. Remove the CR Unit by sliding it in the direction of the arrow.
After releasing the Timing Belt, temporarily secure the belt to the
Cartridge Cover with a tape or the like so as not to allow the grease
to come in contact with the Timing Belt. Contaminating the belt
with grease can result in malfunction of the printer.
Remove the screw (x1), and remove the CR Scale Holder and the CR Unit Stopper.
CR Unit
CR Scale Holder
CR Unit Stopper
CR Scale Holder
Stylus C58/C59/ME2’s Case
C.B.S 3X6 (Torque: 8±1Kgf.cm)
Insert the wavy-surface part of the Timing Belt into the groove
of the CR Unit.
When installing the Head FFC, follow the steps below. (The
procedures are for the Stylus C79/D78/C90/C91/C92/D92, but
the steps are the same for both models unless otherwise noted.)
1. Put the Head FFC through the Hole of the Main Frame.
Main Frame
Ribs
Head FFC
Hole
Figure 4-29. Installing Head FFC (1)
2. Secure the Head FFC with Rib A, and C.
(In Stylus C58/C59/ME2's case, use Rib A and B.
(refer to Figure 4-29))
Ribs
Figure 4-27. Removing CR Scale Holder
Timing Belt Removal
1. Remove the Timing Belt from the groove of the CR Unit.
Timing Belt
Figure 4-28. Removing Timing Belt
.
Head FFC
Groove of CR Unit
Figure 4-30. Installing Head FFC (2)
>>To be continued to the next page.
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 46
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
>> From the previous page.
3. Fold back the Head FFC and secure it with Rib A again.
Head FFC
Figure 4-31. Installing Head FFC (3)
From the next step of Stylus C58/C59/ME2’s case, see the next
column
4. Connect the Head FFC to CN1, CN3 of the Main Board.
(see “4.4.1 Main Board” (p.38))
5. Arrange FFC1 on top of FFC2.
6. Secure the Head FFC with a Strong tape by the following
standard.
• Size: 60mm (L) x 18mm (W)
• The tape must be attached vertically to the Head FFC.
• The lower end of the tape must be 1-2 mm below the upper
side of the hook hole as shown in the figure.
Stylus C58/C59/ME2’s Case (from Step 4)
4. Put the Head FFC through the Ferrite Core with double
sided tape behind.
5. Connect the Head FFC to CN1, CN3 of the Main Board.
(see “4.4.1 Main Board ” (p.38))
6. Secure the Ferrite Core to the Main Frame with double
sided tape by the following standard.
• The top end of the Ferrite Core must be 1mm above the
horizontal marking on the Main Frame.
Main Frame
Marking
1mm
Ferrite Core CN1,CN3
Main Board
Figure 4-33. Installing Head FFC (5)
Strong Tape (60mm x 18mm)
FFC2
FFC1
1-2mm
CN1,CN3
Hook hole
Figure 4-32. Installing Head FFC (4)
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 47
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.6 Ink System removal
Part/Unit that should be removed before removing Ink System
Upper Housing
C A U T I O N
Head Cleaner
Cap Assy
Sealing Rubber
Removal procedure
Ink System (Cap Assy)
1. Release the tabs (x2) that secure the Cap Assy, and detach the Cap Assy.
Do not touch or damage the Sealing Rubber or the Head
Cleaner when performing the following work.
Mark the connection location before removing the Ink Tube.
When removing the Ink System, follow the procedure below.
1. Detach the Cap Assy.
2. Detach the Dump Assy.
3. Remove the whole Ink System.
Figure 4-34. Component Formation of Ink System
Pump Assy
2. Detach the Ink Tube from the Cap Assy, and remove the Cap Assy.
Cap Assy
Ink Tube
Figure 4-36. Removing Ink System (1)
Ink System (Pump Assy)
1. Remove the Main Board (p38)
2. Remove the Printhead (p41)
3. Remove the Ink System (Cap Assy) (p48)
4. Remove the CR Scale (p44)
5. Remove the CR Motor (p45)
6. Remove the CR Unit/Timing Belt (p46)
7. Remove the Main Frame (p53)
8. Insert a flathead screwdriver between the tab (1) and the rib, and release the
tab (1) while pushing it in the direction of the arrow
.
9. Release the tab (2) in the direction of the arrow .
Cap Assy
Tabs
Figure 4-35. Removing Ink System (1)
Tab (2)
Tab (1)
Rib
Pump Assy.
Figure 4-37. Removing Ink System (2)
Pump Assy.
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 48
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
10. Pull out the Ink Tube and the Tube Stopper (Figure 4-42) from the connector
of the Waste Ink Pads, and draw out the tube from the hole of the Frame Base.
11. Remove the pump system.
Ink Tube Connector of Waste Ink Pad
Hole of Frame Base
Figure 4-38. Removing Ink System (3)
When installing the Cap Assy, be sure to attach the Ink Tube
up to the edge as shown below without any space between.
Ink Tube
When installing the Cap Assy, follow the steps described below.
1. Arrange the tube between the ribs as shown in the figure below.
2. Place the Cap Assy and match the tabs (x2) and lock them.
(Figure 4-34)
3. Attach the Ink Tube.
Ink Tube
Ribs
(Figure 4-38)
Figure 4-41. Installing Ink System
When installing the Pump Assy, follow the steps described
below.
1. Match the tabs (x2) of the Pump Assy with the positioning
holes (x2) of the Frame Base. (Figure 4-36)
2. Insert the Ink Tube into the hole of the Frame Base, and insert the
tube into the connector.
3. Arrange the tube with the Tube Stopper as shown in the figure.
4. Attach the Ink Tube into the hole of the connector of Waste Ink
Pad.
Figure 4-39. Installing Ink Tube
Tube Stopper
Ink Tube
Connector
When inserting the Ink Tube into the connector, be careful not
to touch the Paper Back Lever.
Ink Tube Paper Back Lever
Figure 4-40. Paper Back Lever behind Ink Tube
10±1 mm
Figure 4-42. Installing Ink Tube(2)
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 49
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.7 Power Supply Board
Part/Unit that should be removed before removing LD Roller/ASF Unit
Upper Housing
Removal procedure
1. Peel off the acetate tape from the Frame Base.
2. Disconnect the connector cable from the connector (CN8) of the Main Board.
CN8
Acetate Tape
Figure 4-43. Removing Power Supply Board (1)
3. Remove the screw (x1), and remove the Power Supply Board in the direction
of the arrow.
C A U T I O N
Do not turn the Power Supply Board upside down as shown in the
figure below. This figure is only used to show the location of the
parts and the harness arrangement.
4. Pull out the connector cable through the hole of the Frame Base.
Bottom
Power Supply Board
Connector Cable
Hole
Figure 4-45. Removing Power Supply Board (3)
When installing the Power Supply Board, arrange the cable into
the slit
, and place the ferrite core into the hook in the area
of Figure 4-44 (p.50).
Frame Base
C.B.P 3X6 (Torque: 6±1Kgf.cm)
Power Supply Board
Cable of Power Supply Board
Cable of PF Motor
Ferrite core
Hook
Figure 4-46. Installing Power Supply Board
Figure 4-44. Removing Power Supply Board (2)
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 50
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.8 EJ Frame Assy/EJ Roller
Part/Unit that should be removed before removing EJ Frame Assy/EJ Roller
Upper Housing
C H E C K
P O I N T
When installing Spur Gear, 59. 6 and the EJ Roller, be sure to
install new ones. These parts cannot be reused.
Before starting the removal procedure, the preparing
procedure is needed both C58/C59/ME2 and C79/D78 series.
In the case of Stylus C79/D78/C90/C91/C92/D92
Remove the Grounding Spring (See Figure 4-52 (p.53)) from
the EJ Frame Assy.
In the case of Stylus C58/C59/ME2
Remove the screw (x1), and release the hooks and remove the
Shield Plate L.
Hooks
C.B.S 3X6 (Torque: 6±1Kgf.cm)
Shield Plate L
EJ Roller Removal
2. Insert a flathead screwdriver between the rib and the Spur Gear, 59.6 and push
the gear in the direction of the arrow, and remove the Spur Gear, 59.6
Rib
Spur Gear,59.6
EJ Roller
Figure 4-49. Removing EJ Roller (1)
3. Pull the bearing slightly (Arrow ), and remove the EJ Roller (Arrow ).
Bearing
Figure 4-47. Stylus C58/C59/ME2’s Preparation for removal
Removal procedure
EJ Frame Assy removal
1. Remove the screws (x2) and remove the EJ Frame Assy.
EJ Roller
Figure 4-50. Removing EJ Roller (2)
EJ Frame Assy
Grounding Spring
C.B.P 3X8 (Torque: 6±1Kgf.cm)
Figure 4-48. Removing EJ Frame Assy.
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 51
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
Follow the procedure below to install the Grounding Spring
(Grounding Spring, Frame) of Stylus C90/C91/C92/D92. (The
spring is different in shape from that of other models.)
1. Hook the end of the Grounding Spring, Frame to the EJ
Frame Assy.
2. Hook the bend of the Grounding Spring, Frame to the Shield
Plate, Front.
3. Pulling the Grounding Spring, Frame leftward, hook its the other
end to the Shield Plate L.
EJ Frame Assy
Shield Plate,Front
Shield Plate L
Grounding Spring, Frame
Hooks
Figure 4-51. Installing Grounding Spring, Frame
A D J U S T M E N T
R E Q U I R E D
After replacing the EJ Roller, perform the following
adjustment. (Refer to Chapter 5 “ADJUSTMENT”)
1. “Head Angular Adjustment”
2. “Bi-D Adjustment”
3. “PF Band Adjustment” (only after removal)
Whenever the EJ Frame Assy or EJ Roller is replaced, apply
G71 and G74 grease referring to Figure 6-9 (p.79) and Figure
6-10 (p.80) in Chapter 6.
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 52
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.9 Main Frame
Part/Unit that should be removed before removing LD Roller/ASF Unit
Upper Housing /Hopper /Main Board /Print Head /CR Scale /CR Motor /CR Unit /
Timing Belt
Removal procedure
C A U T I O N
1. Remove the screw and the Grounding Spring SPL, and remove the Shield
Shield Plate L
Positioning Hole
Exercise care to avoid injuring with the sharp edges around the
Shield Plate L shown in the figure below.
Plate L while releasing the hooks and the positioning hole.
Caution! Sharp edges
Hooks
Grounding Spring SPL
C.B.S 3X6 (Torque: 6±1Kgf.cm)
4. Remove the Extension Springs (x3) from the hooks of the Main Frame and the
guide pins of the Upper Paper Guide.
Main Frame
Upper Paper Guide
Extension Springs
Figure 4-54. Removing Extension Springs
5. Remove the screws (x4) that secure the Main Frame to the Frame Base.
Figure 4-52. Removing Shield Plate L
2. Remove the PF Roller Grounding Spring.
3. Remove the Driven Pulley Holder from the notch of the Main Frame.
Main Frame
Grounding Spring
Figure 4-53. Removing Grounding Spring and Driven Pulley Holder
Driven Pulley Holder
C.B.S-(P2) 3X6 (Torque: 8±1Kgf.cm)
C.P 3X4 (Torque: 4±1Kgf.cm)
Figure 4-55. Removing Main Frame (1)
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 53
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
6. While detaching the shaft of the LD Roller from the LD Holder Shaft Assy,
remove the Main Frame.
LD Holder Shaft Assy
Main Frame
LD Roller
Upper Paper Guide
Figure 4-56. Removing Main Frame (2)
7. Release the connector cable of the PE Detector from the tabs (x4).
LD Holder Shaft Assy
Tabs
9. Release the tab (x1), and remove the PE Detector Assy.
PE Detector Assy
Tab
Figure 4-59. Removing PE Detector Assy
10. Release the tabs (x6) and remove the Upper Paper Guide.
Figure 4-57. Disconnecting Cable
8. Remove the screw (x1) and remove LD Shaft Holder Assy.
Upper Paper Guide
Tabs
Figure 4-60. Removing Upper Paper Guide
Tabs
C.B.S 3X6 (Torque: 6±1Kgf.cm)
Figure 4-58. Removing LD Shaft Holder Assy
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 54
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
11. Remove the PE Detector Lever and Torsion Spring, 0.222.
When securing the Main Frame to the Frame Base with
screws, be sure to perform the tightening in the order of the
numbers indicated in Figure 4-55 (p.53).
PE Detector Lever
When installing the Shield Plate L, be cautious not to damage
the Spur Gears of the PF Roller and the EJ Roller.
Install the Grounding Spring attaching the ends to the parts as
shown in the figure below.
Torsion Spring, 0.222
Figure 4-61. Removing PE Detector and Torsion Spring, 0.222
When installing the Extension Springs, follow the steps below.
1. Attach one end of the Extension Spring to the guide pin of the
Upper Paper Guide.
2. Attach the other end of the Extension Spring to the hook of the
Main Frame with the longnose pliers.
Extension Spring
Guide Pin
Hook
Figure 4-62. Installing Extension Springs
A D J U S T M E N T
R E Q U I R E D
Notch (Main Frame)
Grounding Spring
Shaft (PF Roller)
Figure 4-63. Installing Grounding Spring
After replacing the Waste Ink Pads, perform the following
adjustment. (Refer to Chapter 5 “ADJUSTMENT”)
1. “Waste Ink Pad Counter” (only after replacement)
2. “Ink Charge”
3. “TOP Margin Adjustment”
4. “Head Angular Adjustment”
5. “Bi-D Adjustment”
6. “PF Band Adjustment”
Whenever the Main Frame is replaced, apply G71 grease
referring to Figure 6-12 (p.80)
and Figure 6-13 (p.80) in
Chapter 6.
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 55
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.10 LD Roller/ASF Unit
Part/Unit that should be removed before removing LD Roller/ASF Unit
Upper Housing /Hopper /Main Board /Main Frame /EJ Frame Assy. /
Print Head /CR Scale/CR Motor/CR Unit/Timing Belt/Ink System
Removal procedure
Preparation for LD Roller Removal
1. Rotate the LD Roller until the flat part faces upwards.
2. Insert a tweezer or a screwdriver into the slot as shown in the figure to hold
the Paper Back Lever outwards.
3. Move the Carriage Lock Lever outwards.
LD Roller
Tweezer
Paper Back Lever
Carriage
Lock Lever
LD Roller Removal
C A U T I O N
Be cautious of the following points.
Do not touch the LD Roller with bare hands.
Do not touch the roller of ASF Unit with bare hands.
4. Release the tabs (x2) of the LD Roller shaft from the bearing, and loosen the
shaft.
Tabs
LD Roller
Figure 4-65. Removing LD Roller (1)
5. Pull out the LD Roller shaft from the frame of the ASF Unit and remove the
LD Roller.
Frame of ASF Unit
Flat part
Carriage
Lock Lever
LD Roller
Figure 4-66. Removing LD Roller (2)
Figure 4-64. Preparation (1)
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 56
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
ASF Unit Removal
1. Remove the screw (x1) from the side of the Lower Housing.
2. Remove the screws (x2), and remove the ASF Unit taking care not to scratch
it with the positioning tab.
ASF Unit
Lower Housing
C.B.P 3X8 (Torque: 6±1Kgf.cm)
ASF Unit
Assemble the LD Roller as shown below.
LD Roller Shaft
LD Roller
Extension
Spring 0.143
Tabs
Guide pin
Positioning hole
Spur Gear 36.8
Clutch
Figure 4-68. Assembling LD Roller (1)
1. Match the guide pin of the LD Roller Shaft with the positioning
hole of the Clutch.
2. Attach the tips of the Extension Spring 0.143 to the tab of the LD
Roller shaft and the tab of the Clutch.
3. Attach the cam side of the Spur Gear 36.8 to the hole of the Clutch.
LD Roller
Clutch
Figure 4-69. Assembling LD Roller (2)
Positioning Tab
A D J U S T M E N T
R E Q U I R E D
Figure 4-67. Removing ASF Unit
Whenever the LD Roller is replaced, apply G71 grease
referring to Figure 6-4 (p.78) and Figure 6-5 (p.78) in Chapter
6.
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 57
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.11 Waste Ink Pads
Part/Unit that should be removed before removing Waste Ink Pads
Upper Housing /Hopper /Main Board /Main Frame /EJ Frame Assy. /
Print Head /CR Scale/CR Motor/CR Unit/Timing Belt/Ink System/Power Supply
Board/EJ Roller/ASF Unit
Removal procedure
1. Remove the Waste Ink Pads (x8) from the sections indicated with to
of the Frame Base.
Figure 4-70. Removing Waste Ink Pads
When installing the Waste Ink Pads on the section , be sure
to lay the six parts one on top of another in the order shown in
the figure.
Figure 4-71. Installing Waste Ink Pads (1)
When installing the Waste Ink Pads on the section (B), make
sure to insert the tips of induction paper between the
and
pads.
C A U T I O N
When removing the Waste Ink Pads, be careful not to tear the tip
of the induction paper. If it is torn, replace the induction paper.
Tips of induction paper
Figure 4-72. Installing Waste Ink Pads (2)
When installing the Waste Ink Pads, be sure to insert ribs and
tabs of the Frame Base into the slots and notches of the pads.
When installing in the section (refer to Figure 4-71), be
sure to match the positioning tabs and press
until it clicks
to secure it in the right position.
A D J U S T M E N T
R E Q U I R E D
After replacing the Waste Ink Pads, perform the following
adjustment. (Refer to Chapter 5 “ADJUSTMENT”)
1. “Waste Ink Pad Counter” (only after replacement)
2. “Ink Charge”
3. “TOP Margin Adjustment”
4. “Head Angular Adjustment”
5. “Bi-D Adjustment”
6. “PF Band Adjustment”
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 58
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.12 PF Roller
C A U T I O N
Part/Unit that should be removed before removing PF Roller
Upper Housing /Hopper /Main Board /Main Frame /EJ Frame Assy. /
Print Head /CR Scale/CR Motor/CR Unit/Timing Belt/Ink System
Removal procedure
1. Remove the FB Cover.
Do not touch or damage the coated area of the PF Roller
Assy., when performing the following work.
When installing the Spur Gear, 13.5, be sure to install a new
one. The Spur Gear 13.5 cannot be reused.
FB Cover
2. Remove the Spur Gear, 13.5 from the PF Roller with a flathead screw driver
or the like.
Spur Gear, 13.5
PF Roller Assy.
Figure 4-75. Removing PF Roller (2)
3. <Pull open the bearing slightly (Arrow ), and remove the PF Roller Assy
(Arrow
).
PF Roller Assy.
Figure 4-73. Removing PF Roller (1)
C A U T I O N
When removing (prying) the Spur Gear, 13.5 with a flathead
screw driver or the like, do not use the fragile upper half of the
Figure 4-76. Removing PF Roller (3)
Bearing
bearing as a pivot point, but use the firmer lower half instead.
Whenever the PF Roller is replaced, apply G71 grease
referring to Figure 6-6 (p.79), Figure 6-7 (p.79) and Figure 6-8
Upper half of the Bearing
A D J U S T M E N T
R E Q U I R E D
(p.79) in Chapter 6.
Spur Gear, 13.5
Lower half of the Bearing
Figure 4-74. Removing Spur Gear, 13.5
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 59
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.5.13 PF Motor
Part/Unit that should be removed before removing PF Motor
Upper Housing /Hopper /Main Board /Main Frame /EJ Frame Assy. /
Print Head /CR Scale /CR Motor /CR Unit /Timing Belt /EJ Roller /PF Roller
Removal procedure
1. Detach the ferrite core from the Main Frame.
Main Frame
Ferrite Core
Figure 4-77. Removing PF Motor (1)
2. Remove the screws (x3), and remove the PF Motor.
When installing the PF Motor, arrange the cable into the slit and
the hook, then place the ferrite core into the positioning hole.
Positioning hole
Ferrite Core
Slit
Hook
Figure 4-79. Installing the PF Motor
C.B.S 3X8 (Torque: 6±1Kgf.cm)
PF Motor
Figure 4-78. Removing PF Motor (2)
DISASSEMBLY/ASSEMBLY Disassembling Printer Mechanism 60
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.6 Procedure Specific to Stylus C58/C59/ME 2
4.6.1 Printhead
Part/Unit that should be removed before removing Printhead
Upper Housing /Hopper
Removal Procedure
Printhead Removal
1. Unlock the Carriage Lock with a flathead screwdriver or a similar tool, and
move the CR Unit to the center of the printer.
Locked
Carriage Lock
Unlocked
CR Unit
C H E C K
P O I N T
The Cartridge Cover Hinge cannot be reused.
3. Follow the steps below to remove the Cartridge Cover Hinge.
(1) Cut off the part of the Cartridge Cover Hinge with a nipper as indicated in
the figure.
(2) Remove the upper part of the Cartridge Cover Hinge.
(3) Release the tab and remove the lower part of the Cartridge Cover Hinge.
Tab
Cut here
Cartridge Cover Hinge
Lower part
Upper part
Figure 4-81. Removing Cartridge Cover Hinge
4. Remove the Cartridge Cover.
5. Remove the screw, and remove the Sub FFC Guide while releasing the tab.
C.B.P 2.5X8 (Torque: 3±1Kgf.cm)
Tab
Figure 4-80. Releasing Carriage Lock
2. Open the Cartridge Cover and remove all the Ink Cartridges from the Carriage
Unit.
Sub FFC Guide
Figure 4-82. Removing Sub FFC Guide
DISASSEMBLY/ASSEMBLY Procedure Specific to Stylus C58/C59/ME 2 61
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
6. Release the FFC from the tabs.
FFCs
Tabs
Figure 4-83. Releasing FFCs from Tabs
7. Disconnect the FFCs (x2) that are connected to the CSIC Board and the CR
Encoder Board.
FFCs
8. Release the tabs (x2) that secure the Holder Board Assy, and remove the
Holder Board Assy upward.
Tab (1)
Holder
Board Assy.
CR Unit
Tab (1)
Tab (2)
CR Unit
Tab (2)
Tab (1)
Tab (2)
Holder Board Assy
Figure 4-85. Removing Holder Board Assy
Figure 4-84. Disconnecting Head FFCs
DISASSEMBLY/ASSEMBLY Procedure Specific to Stylus C58/C59/ME 2 62
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
C A U T I O N
Do not touch or damage the nozzles or the ink supply needles of the
Printhead.
9. Remove the screws (x3) that secure the Printhead, and lift up the Printhead
with a longnose pliers.
C.B.P 2.5X8 (Torque: 3±1Kgf.cm)
Figure 4-86. Removing Printhead (1)
10. Disconnect the Head FFC (x1) from the connector (x1) on the Printhead, and
remove the Printhead.
Head FFC
Printhead
A D J U S T M E N T
R E Q U I R E D
When installing the Holder Board Assy, make sure to check if
the assy is properly installed in the right position. The assy is
likely to be installed in the wrong position.
The Ink Position Label is not included in the Cartridge Cover.
When replacing the Cartridge Cover, order the label
separately and attach the Ink Position Label to the place shown
below.
Ink Position Label
Install the label in this position with
Black to the right.
Cartridge Cover
Figure 4-88. Installing Ink Position Label
After removing/replacing the Printhead, perform the adjustment
in the following order. (Refer to Chapter 5 “ADJUSTMENT”)
1. “Ink Charge” (only after replacement)
2. “Head ID Input” (only after replacement)
3. “TOP Margin Adjustment”
4. “First Dot Adjustment”
5. “Head Angular Adjustment”
6. “Bi-D Adjustment”
7. “PF Band Adjustment”
Figure 4-87. Removing Printhead (2)
DISASSEMBLY/ASSEMBLY Procedure Specific to Stylus C58/C59/ME 2 63
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.6.2 Waste Ink Pads
Part/Unit that should be removed before removing Waste Ink Pads
Upper Housing /Hopper /Main Board /Main Frame /EJ Frame Assy. /
Print Head /CR Scale/CR Motor/CR Unit/Timing Belt/Ink System/Power Supply
Board/EJ Roller/ASF Unit
Removal procedure
1. Remove the Waste Ink Pads (x7) from the sections indicated with to
of the Frame Base.
Figure 4-89. Removing Waste Ink Pads
When installing the Waste Ink Pads on the section , be sure
to lay the four parts one on top of another in the order shown
in the figure.
Figure 4-90. Installing Waste Ink Pads (1)
When installing the Waste Ink Pads on the section (B), make
sure to insert the tips of induction paper between the
and
pads.
C A U T I O N
When removing the Waste Ink Pads, be careful not to tear the tip
of the induction paper. If it is torn, replace the induction paper.
Tips of induction paper
Figure 4-91. Installing Waste Ink Pads (2)
When installing the Waste Ink Pads, be sure to insert ribs and
tabs of the Frame Base into the slots and notches of the pads.
When installing in the section (refer to Figure 4-90), be
sure to match the positioning tabs and press
until it clicks
to secure it in the right position.
A D J U S T M E N T
R E Q U I R E D
After replacing the Waste Ink Pads, perform the following
adjustment. (Refer to Chapter 5 “ADJUSTMENT”)
1. “Waste Ink Pad Counter” (only after replacement)
2. “Ink Charge”
3. “TOP Margin Adjustment”
4. “Head Angular Adjustment”
5. “Bi-D Adjustment”
6. “PF Band Adjustment”
DISASSEMBLY/ASSEMBLY Procedure Specific to Stylus C58/C59/ME 2 64
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
4.7 The Shortest Way to Remove the Main Frame.
If the parts to repair is only the parts after the Main Frame is removed, there’s another
way to remove the Main Frame together with other parts. (See the following list of
“Target Parts of this removal” or the parts marked with “*” in Figure 4-2,
"Disassembling Flowchart" (p.35))
Main Frame with other parts
Parts removed together
Main Board
CR Unit
Printhead
CR Scale
Head FFC
PE Sensor
Paper Guide Upper
Target Parts of this removal
LD Roller
ASF Unit
Ink System
Waste Ink Pad
PF Roller
PF Motor
Figure 4-92. Removing Main Frame with Other Parts
Removal procedure
1. Remove the “4.3.1 Upper Housing” (p.36) .
2. Remove the “4.5.1 Hopper” (p.40).
3. Disconnect the connector cables of P/S ASSY and PF Motor from CN6, CN8
of the Main Board. (See “4.4.1 Main Board” (p.38))
4. Remove the “4.5.4 CR Motor” (p.45).
5.
Remove the screw from the Shield Plate L. (The plate is not to be removed. In
Stylus C79/D78’s case, see Step1 in
C59/ME2’s case, see Check Point in
“4.5.9 Main Frame” (p.53)
. In Stylus C58/
“4.5.8 EJ Frame Assy/EJ Roller” (p.51)
6. Follow the same steps from Step 2 in “4.5.9 Main Frame” (p.53) to Step 6.
7. Remove the Main Frame together with other parts.
C A U T I O N
After removing the Main Frame, treat and place the Main
Frame with great care while following the next instructions.
Place the Main Frame with
the back side facing down
as shown in the figure.
Main Frame with other parts
Figure 4-93. How to place the Main Frame
• Be careful not to deform the Main Frame.
• Do not touch or damage the nozzles or the ink supply needles
of the Printhead when placing the Main Frame.
• Be careful not to stick the grease around the area, especially
not to allow the grease to come in contact with the Timing
Belt, which can result in malfunction of the printer.
• Be careful not to lose the rollers of Paper Guide Upper, and do
not touch the rollers with bare hands.
When reassembling the Main Frame, basically follow the
removal steps backward. But in some points listed below, be
sure to refer to the reassembly instructions.
• Be careful not to bend or damage the Shield Plate L when
placing the Main Frame on the Frame Base in Step 5.
• Be careful not to damage the Carriage Lock Lever when
placing the Main Frame on the Frame Base in Step 5. (See
Preparation for LD Roller Removal (p56))
• See “ Installing Extension Springs ” (p.55) and “Installing
Grounding Spring” (p.55) in Step 5
A D J U S T M E N T
R E Q U I R E D
After removing the Main Frame in this removal, perform the
required adjustment. (Refer to Chapter 5 “ADJUSTMENT”)
When the Main Frame is reassembled, perform the required
lubrication. (Refer to Chapter 6 “MAINTENANCE”)
)
DISASSEMBLY/ASSEMBLY The Shortest Way to Remove the Main Frame. 65
ADJUSTMENT
CHAPTER
5
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
5.1 Adjustment Items and Overview
This chapter describes adjustments necessary after the disassembly/reassembly of the printer.
5.1.1 Servicing Adjustment Item List
The adjustment items of this product are as follows.
Table 5-1. Adjustment Items
Function Item Purpose Method Outline Tool Used Media
EEPROM data copy
Destination settings
USB-ID Input
Adjustment Items
Head ID Input
TOP Margin Adjustment
This function is used to read the necessary data
from the EEPROM of the faulty Main Board
and write them to the new Main Board in order
to reduce the auxiliary adjustment items at the
time of Board replacement.
At the time of Main Board replacement, this
adjustment is made to write the Board common
information on a destination basis.
To enable recognition of each printer on the PC
side, when several same model printers are
connected to the PC via the USB hub.
At the time of Printhead replacement, this
adjustment is made to register the head
manufacturing variations correction ID to the
printer.
Adjust to make the Top Margin the value you
wish.
With the old Board installed, use the adjustment program to
read out and memorize the EEPROM data, and after
exchanging with the new Board, load the memorized data.
Use the adjustment program to write the Board information on a
destination basis to the Main Board.
Enter the serial number to the adjustment program. Operate the
function for the adjustment program to automatically create an
unique ID from the serial number, and it is registered to the
Printer.
Use the adjustment program to input the Head QR Code label
ID stuck on the Printhead. (Supplement: Read the QR code
label from left to right on the top row and then from top to
bottom in due order.)
Use the adjustment program, to print the Top margin
adjustment pattern, measure the distance from Paper top edge to
the TOP line, and adjust so that it becomes within 3 ± 1mm.
• Adjustment
Program
• Adjustment
Program --
• Adjustment
Program
• Adjustment
Program
• Adjustment
Program
• Rule
(Plain paper)
--
--
--
A4
ADJUSTMENT Adjustment Items and Overview 67
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
Table 5-1. Adjustment Items
Function Item Purpose Method Outline Tool Used Media
Head angular adjustment
Bi-D adjustment
First dot adjustment
Adjustment Items
PF Band adjustment
CR heat protection control
Adjust the vertical/horizontal tilt that occur
when installing the Head, by the software.
This adjustment is made to correct the print
timing in the go and return paths in bidirectional printing.
Correct the print timing by the software to
make the start printing position of the main
scan direction to the value you wish.
This adjustment is made to correct the
variations of Mechanism, or the paper feeding
accuracy.
Assuming production variation of the CR
Motor and the PS Board, operate this to use the
motor capacity to the maximum when the CR
Motor generates heat.
Use the adjustment program to print the adjustment pattern and
adjust to meet the standard.
Use the adjustment program to print out the adjustment pattern,
and enter the adjustment value of the printed pattern with no
black/white streaks in the block.
Adjustment items are, each dot sizes (ECO/VSD1/VSD2/
VSD3) x Colors (Black/Color), total of 8 types.
Use the adjustment program to print the adjustment pattern and
enter the adjustment value of printed position 5mm from the left
edge.
Use the adjustment program to print out the adjustment pattern,
evaluate the pattern based on the criteria, and register the
appropriate adjustment value to the printer.
Select the replaced parts in the adjustment program, then
operate this adjustment to automatically write the appropriate
adjustment value.
• Adjustment
Program
• Adjustment
Program
• Adjustment
Program
• Rule
• Adjustment
Program
• Adjustment
Program
A4
(Plain paper)
A4
(Plain paper)
A4
(Glossy paper)
A4
(Plain paper)
--
Table 5-2. Maintenance Items
Function Item Purpose Method Outline Tool Used Media
Head Cleaning
Ink charge
Maintenance Items
Waste ink pad counter read out/
Initialization
This function is used to execute Cleaning
efficiently when ink is not delivered from the
Head properly, e.g. dot missing.
When replacing the Head, this function is used
to fill ink in the flow path of the Head in the
ASP to make all nozzles printable and stabilize
the ink in the Printhead.
Initialize the Waste ink pad counter for
replaced parts after maintenance error
occurred. Also, when counter full is close, pad
exchange/counter initialization may be
executed to prevent re-fixing.
Use the adjustment program to execute Cleaning, then execute
nozzle check printing.
Use the adjustment program to execute ink charge, then
execute nozzle check printing.
After exchanging the Waste ink pad, initialize the counter by
the adjustment program.
• Adjustment
Program
• Adjustment
Program
• Adjustment
Program
A4 / Letter
(Plain Paper)
A4 / Letter
(Plain Paper)
--
ADJUSTMENT Adjustment Items and Overview 68
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
Table 5-3. Additional Functions
Function Item Purpose Method Outline Tool Used Media
Plain Paper
Print check
pattern
EEPROM data readout Read the EEPROM data for analysis.
Additional Functions
Read printer
information
Photo Quality
Ink Jet Paper
Waste Ink
counter
Manual CL
counter
I/C exchange
CL counter
Timer CL
counter
This printing is executed to check whether all
adjustment results are normal.
Read the printer operation information. Select and execute the functions by the adjustment program.
Select and execute the functions by the adjustment program.
Select this function in the exclusive servicing program, and
save all data of the EEPROM into a file.
• Adjustment
Program
• Adjustment
Program
• Adjustment
Program
A4 / Letter
(Plain paper)
A4 / Letter
(Photo Quality
Ink Jet Paper)
--
ADJUSTMENT Adjustment Items and Overview 69
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
5.1.2 Replacement Part Adjustment Items
The following table indicates the adjustment items for replacement parts.
Note: “Required” in this table indicates the adjustment item that must be executed when the corresponding part has been removed/replaced. “Required” indicates the adjustment item that must be
executed since the part is related to the corresponding part to be removed/replaced, or the adjustment item that must be executed when the corresponding part has been removed/replaced. “-” indicates
that no adjustment is required. When you have removed/replaced two or more parts, refer to the corresponding items of all parts. Also, if there are several adjustment items for one exchanging part,
execute the adjustment in the priority order mentioned in the table.
Table 5-4. Adjustment Items
Priority 1 2 3 4 5 6 7 8 9 10 11 12
Replaced parts
Hopper
Main Frame
Main Board
LD roller/ASF unit
Wasted ink Pads
Printhead
CR Motor
CR unit/Timing Belt
Ink System (Pump)
EJ Roller
Adjustment item
Removal -- -- -- -- -- -- Required -- -- -- Required --
Replacement -- -- -- -- -- -- Required -- -- -- Required --
Removal -- -- -- -- -- -- Required Required Required Required Required --
Replacement -- -- -- -- -- -- Required Required Required Required Required Required
Removal -- -- -- -- -- -- -- -- -- -- -- --
Replacement Required -- -- -- -- -- -- -- -- -- -- --
Replacement
(EEPROM Copy NG)
Removal -- -- -- -- -- -- Required -- Required Required Required --
Replacement -- -- -- -- -- -- Required -- Required Required Required Required
Removal -- -- -- -- Required -- Required -- Required Required Required --
Replacement -- -- -- Required Required -- Required -- Required Required Required --
Removal -- -- -- -- -- -- Required Required Required Required Required --
Replacement -- -- -- -- Required Required Required Required Required Required Required --
Removal -- -- -- -- -- -- -- Required Required Required -- --
Replacement -- -- -- -- -- -- -- Required Required Required -- Required
Removal -- -- -- -- -- -- Required Required Required Required Required --
Replacement -- -- -- -- -- -- Required Required Required Required Required Required
Removal -- -- -- -- Required -- Required Required Required Required Required --
Replacement -- -- -- -- Required -- Required Required Required Required Required --
Removal -- -- -- -- -- -- -- -- Required Required Required --
Replacement -- -- -- -- -- -- -- -- Required Required -- --
EEPROM
data copy
Destination
setting
-- Required Required
USB ID
input
Waste ink
pad counter
Ink Pads
must be
replaced
Ink charge
-- Required Required Required Required Required Required Required
Head ID
input
TOP margin
adjustment
First dot
adjustment
Head
Angular
adjustment
Bi-D
adjustment
PF band
adjustment
CR heat
protection
control
ADJUSTMENT Adjustment Items and Overview 70
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
Table 5-4. Adjustment Items
Priority 1 2 3 4 5 6 7 8 9 10 11 12
Replaced parts
PF Roller
PF Motor
Power Supply Board
EJ Frame Assy
Adjustment item
Removal -- -- -- -- -- -- Required Required Required Required Required --
Replacement -- -- -- -- -- -- Required Required Required Required Required --
Removal -- -- -- -- -- -- Required Required Required Required Required --
Replacement -- -- -- -- -- -- Required Required Required Required Required --
Removal -- -- -- -- -- -- -- -- -- -- -- --
Replacement -- -- -- -- -- -- -- -- -- -- -- Required
Removal -- -- -- -- -- -- Required -- Required Required Required --
Replacement -- -- -- -- -- -- Required -- Required Required Required --
EEPROM
data copy
Destination
setting
USB ID
input
Waste ink
pad counter
Ink charge
Head ID
input
TOP margin
adjustment
First dot
adjustment
Head
Angular
adjustment
Bi-D
adjustment
PF band
adjustment
CR heat
protection
control
ADJUSTMENT Adjustment Items and Overview 71
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
5.2 Adjustment by Using Adjustment Program
This section explains how to judge print samples by using the adjustment program.
Follow the instructions of the adjustment program for details of the adjustment methods.
5.2.1 Head angular adjustment
FOR STYLUS C58/C59/ME2 AND STYLUS C79/D78
Patterns are printed as shown below.
Sample of Head Angular band pattern :
NG -3 -2 -1 0 1 2 3 NG
Figure 5-1. Head angular adjustment Pattern Printing
[Judgment method]
Find the pattern with least vertical displacement between -3 and 3, and enter the value
of that pattern.
[Corrective action]
If the “NG” on both ends are the ones with least vertical displacement, reassemble/
replace the Head, and carry out the adjustment again.
C H E C K
P O I N T
The diagram below shows the OK and NG patterns.
FOR STYLUS C90/C91/C92/D92
Patterns are printed as shown below.
-1
-5
-7
-1
1
2
Figure 5-2. Head angular adjustment Pattern Printing
[Judgment method]
Find the pattern with no gaps or overleaps of the left and right pattern, and enter the
value of that pattern.
[Corrective action]
If an appropriate pattern is not printed, enter the nearest value and then print the
patterns again.
C H E C K
P O I N T
The diagram below shows the OK and NG patterns.
Overlap
OK NGNG
3
Gap
NGOKNG
NG OK
ADJUSTMENT Adjustment by Using Adjustment Program 72
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
0
5
5.2.2 Top Margin Adjustment
Patterns are printed as shown below.
Top Pattern Paper
3±1 mm
TOF Line
Figure 5-3. Top Margin adjustment Pattern Printing
[Judgment method]
Measure the distance from Paper top edge to the adjustment line, and check that it is
with in 3±1mm.
[Corrective action]
5.2.3 Bi-D Adjustment
8 types of the pattern below, each dot size (ECO/VSD1/VSD2/VSD3) x color (Black/
Color) are printed.
-
-1
-
Figure 5-4. Bi-D adjustment Pattern Printing
[Judgment method]
Find the pattern with no gaps or overleaps of the left and right pattern, and enter the
value of that pattern.
[Corrective action]
If an appropriate pattern is not printed, enter the nearest value and then print the
patterns again.
C H E C K
P O I N T
The diagram below shows the OK and NG patterns.
-
Overlap
-
Gap
With the adjustment program, select adjustment value "+2","+1","-1","-2" and adjust
the deviation. (Each adjustment value shifts the line by 0.85 mm.)
OK NGNG
NGOKNG
ADJUSTMENT Adjustment by Using Adjustment Program 73
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
5.2.4 First Dot Adjustment
Patterns are printed as shown below.
-2
-1
5 mm
0
1
2
Figure 5-5. Left Right margin adjustment Pattern Printing
[Judgment method]
Measure the distance from Paper left edge to the adjustment line, and enter the value of
the patter that it is 5mm away from the left edge.
5.2.5 PF Band Adjustment
Patterns are printed as shown below.
-3
-2
-1
0
1
2
3
Figure 5-6. PF Band Adjustment Pattern
[Judgment method]
Select the pattern with no gap or overleap.
[Corrective action]
[Corrective action]
If the an appropriate pattern is not printed, reassemble the parts that was removed/
replaced, and carry out the adjustment again.
If the an appropriate pattern is not printed, reassemble the parts that was removed/
replaced, and carry out the adjustment again.
C H E C K
P O I N T
The diagram below shows the OK and NG patterns.
Overlap
NG
OK
Gap
NG
ADJUSTMENT Adjustment by Using Adjustment Program 74
MAINTENANCE
CHAPTER
6
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
6.1 Overview
This section provides information to maintain the printer in its optimum condition.
6.1.1 Cleaning
This printer has no mechanical components which require regular cleaning except the
Printhead. Therefore, when returning the printer to the user, check the following parts
and perform appropriate cleaning if stain is noticeable.
.
C A U T I O N
Never use chemical solvents, such as thinner, benzine, and
acetone to clean the exterior parts of the printer like the
Housing. These chemicals may deform or deteriorate the
components of the printer.
Be careful not to damage any components when you clean inside
the printer.
Do not scratch the coated surface of the PF roller. Use soft brush
to wipe off any dusts. Use a soft cloth moistened with alcohol to
remove the ink stain.
Do not use cleaning sheet included in the media for normal
usage. It may damage the coated surface of PF roller.
If the adhesive surface of the cleaning sheet is set to the LD roller
shaft side and used to clean the LD roller surface, it is no
problem.
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.
6.1.2 Service Maintenance
If any abnormal print (dot missing, white line, etc.) has occurred or the printer indicates
the “Maintenance request error” (This error is displayed as “Maintenance call error” in
the STM3), take the following actions to clear the error.
Printhead cleaning
When dot missing or banding phenomenon has occurred, you need to perform the
printhead cleaning operation*1 by using the printhead cleaning function. This
function can be performed by the control panel operation, the printer driver utility
and the Adjustment program.
In case that the cleaning sequence is performed by the control panel operation,
confirm that the printer is in stand-by state (the Power LED is lighting), and hold
down the Error reset button on the control panel for more than 3 seconds. Then,
the printer starts the cleaning sequence (the Power LED blinks during this
sequence).
In case that you select and perform the manual cleaning by the printer driver
utility, the most appropriate cleaning mode is selected. The following is the
process to perform the printhead cleaning from the printer driver utility.
As for the operation of the Adjustment program, refer to
Chapter 5 “ADJUSTMENT” (p.66).
*1: Stylus C58/C59/ME 2 and Stylus C79/D78/C90/C91/C92/D92 have four
modes for manual cleaning, and even during printing, the appropriate cleaning
mode is automatically selected and performed according to various conditions.
Therefore the ink consumption amount for manual cleaning varies depending on
each mode.
Exterior parts
Use a clean soft cloth moistened with water, and wipe off any dirt. If the exterior parts
are stained by the ink, use a cloth moistened with neutral detergent to wipe it off.
Inside the printer
Use a vacuum cleaner to remove any paper dust.
LD Roller
When paper loading function does not operate because friction of the LD roller is
lowered by any paper dust, set the adhesive side up of the cleaning sheet (included
in the media) to remove any paper dust. Repeat loading the cleaning sheet several
times.
MAINTENANCE Overview 76
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
1. Select the “EPSON Status Monitor 3” in the printer driver utility, and make sure
that the printer is in stand-by state by using the Status monitor 3. If the printer is in
stand-by state, the following figure is indicated on the monitor.
Figure 6-1. Status monitor 3 indication
2. Select the “Head Cleaning” in the printer driver utility, and perform the printhead
cleaning. After performing the printhead cleaning operation, print a nozzle check
pattern by selecting the “Nozzle Check“. If you repeat the printhead cleaning
operation without selecting the “Nozzle Check”, CL1, the weakest cleaning, will
be repeated.
Maintenance request error (Maintenance call error)
Ink is used for the printhead cleaning operation as well as the printing operation.
When the ink is used for the printhead cleaning operation, the ink is drained to the
Waste drain ink pad and the amount of the waste ink is stored as the waste ink
counter into the EEPROM on the Main board. Due to this, when the waste ink max
counter has reached the limit (9000) of the absorbing capability of the Waste drain
ink pad, the Maintenance call error is indicated on Status monitor 3 as following
figure. But waste ink max counter is changed by usage, therefore waste ink max
counter is not necessarily right.
Figure 6-3. Maintenance error indication in STM3
In this case, replace to new Waste drain ink pad and clear the waste ink counter stored
into the EEPROM. The waste ink counter can be reset only from the Adjustment
program because this printer dose not have the waste ink counter reset function by the
control panel SW. As for the procedure, refer to Chapter 5 “ADJUSTMENT” (p.66).
In your repair activity, check the waste ink counter along with the firmware version,
Main board checker program version and nozzle check pattern on the nozzle check
pattern printing. If the waste ink counter is closed to its limit, recommend that the
Waste drain ink pad will be replaced with new one. This is because the “Maintenance
request error” will may occur after returning the repaired product to the customer.
Figure 6-2. Head cleaning function in the printer driver utility
MAINTENANCE Overview 77
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
6.1.3 Lubrication
The characteristics of the grease have great affects on the mechanical function and
durability, especially does the characteristics about temperature environment. The type
and amount of the grease used to lubricate the printer parts are determined based on the
results of the internal evaluations. Therefore, be sure to apply the specified type and
amount of the grease to the specified part of the printer mechanism during servicing.
C A U T I O N
Never use oil or grease other than those specified in this
manual. Use of different types of oil or grease may damage the
component or give bad influence on the printer function.
Never apply larger amount of grease than specified in this
manual.
Type Name EPSON code Supplier
Grease G-71 1304682 EPSON
Grease G-58 1432035 EPSON
Grease G-74 1409257 EPSON
Refer to the following figures for the lubrication points.
Blade B (Round side UP)
<Lubrication Point>
Blade A, Blade B of LD Roller
<Lubrication Type>
G-71
<Lubrication Amount>
φ1mm x along edges (L)
LD Roller (Round side UP)
Blade A (Flat side UP)
Lubrication Points (Side view)
Blade B
Blade A
<Remarks>
Use an injector to apply G-71.
• G-71 must not be adhered to
other parts.
• Rub off excess G-71 with a
cotton bud if necessary.
Figure 6-4. Lubrication on LD Roller (1)
Blade B (V-shape side UP)
<Lubrication Point>
Blade A, Blade B of LD Roller
<Lubrication Type>
G-71
<Lubrication Amount>
φ1mm x along edges (L)
LD Roller (Flat side UP)
Blade A (Round side UP)
Lubrication Points (Side view)
Blade B
Blade A
<Remarks>
Use an injector to apply G-71.
• G-71 must not be adhered to
other parts.
• Rub off excess G-71 with a
cotton bud if necessary.
Figure 6-5. Lubrication on LD Roller (2)
MAINTENANCE Overview 78
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
Lower Housing
Bearing C
Lubrication Point
Bearing A
Bearing A of Lower Housing
(for PF Roller)
<Lubrication Type>
G-71
<Lubrication Point>
Lubrication Point
<Lubrication Amount>
φ
1 mm x along inner edge (L)
<Remarks>
Use an injector to apply G-71.
• G-71 must not be adhered to
other parts.
• Rub off excess G-71 with a
cotton bud if necessary.
Figure 6-6. Lubrication on PF Roller Bearing (1)
<Lubrication Point>
Bearing B, C of Lower Housing
(for PF Roller)
<Lubrication Type>
Lubrication Point
G-71
<Lubrication Amount>
φ1 mm x along inner edges (L)
<Remarks>
Bearing B
Use an injector to apply G-71.
• G-71 must not be adhered to
other parts.
• Rub off excess G-71 with a
cotton bud if necessary.
Figure 6-7. Lubrication on PF Roller Bearing (2)
Spur Gear
Lubrication Point(1)
Spur Gear
<Lubrication Point>
Shaft and Groove of PF Roller
Lubrication Points
<Lubrication Type>
G-71
<Lubrication Point>
φ1 mm x around shaft x 2
<Remarks>
Use an injector to apply G-71.
PF Roller
• G-71 must not be adhered to
other parts.
• Rub off excess G-71 with a
cotton bud if necessary.
Figure 6-8. Lubrication on PF Roller
<Lubrication Point>
(1) Teeth of Spur Gear of EJ Roller*
(2) Shaft of Spur Gear of EJ Roller
Lubrication Point(2)
<Lubrication Type>
(1) G-58*
(2) G-71
<Lubrication Amount>
(1) φ1 mm x 60 mm*
(2) φ1 mm x around shaft
<Remarks>
Use an injector to apply G-58*
EJ Roller
and G-71.
• G-71 must not be adhered to
other parts.
• Rub off excess G-71 with a
cotton bud if necessary.
Figure 6-9. Lubrication on EJ Roller (1)
Note * : Stylus C90/C91/C92/D92 Only.
MAINTENANCE Overview 79
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
Lubrication Points (x 19)
Figure 6-10. Lubrication on EJ Roller (2)
Main Frame
355 mm
1
<Lubrication Point>
Bearings (x19) below the hooks of
Lower Housing (for EJ Roller)
<Lubrication Type>
G-74
<Lubrication Point>
0.04g/position
<Remarks>
Use a flux dispenser to apply G-74
• G-74 must not be adhered to
other parts.
• Rotate EJ Roller when lubricate
it with G-74.
Right Side View
1.5 mm
Lubrication Point ( : x 1)
Main Frame
Figure 6-12. Lubrication on Main Frame (1)
Right Side View
1
<Lubrication Point>
Upper rib (x 1)
Area 1 in Figure 6-11
<Lubrication Point>
G-71
<Lubrication Amount>
φ 1 mm x 355 mm along upper rib
(See Figure 6-11)
<Remarks>
Use an injector to apply G-71.
• G-71 must not be adhered to
other parts.
• Rub off excess G-71 with a
cotton bud if necessary.
<Lubrication Point>
2
Lower rib (x 4: Point A - Point D)
Area 2 in Figure 6-11
2
Figure 6-11. Lubrication on Main Frame
There is one lubrication point in the area indicated with 1. See Figure 6-12
Main Frame
Lubrication Points ( : x 4)
1.5 mm
B
A
6 mm
C
D
4 mm
<Lubrication Point>
G-71
<Lubrication Amount>
φ 1 mm x 355 mm along lower rib
(See Figure 6-11)
<Remarks>
Use an injector to apply G-71.
• G-71 must not be adhered to
other parts.
• Rub off excess G-71 with a
cotton bud if necessary.
There are four lubrication point in the area indicated with 2. See Figure 6-13
Figure 6-13. Lubrication on Main Frame (2)
MAINTENANCE Overview 80
APPENDIX
CHAPTER
7
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
7.1 Exploded Diagrams
The exploded diagrams of this product are shown on the following pages.
Exploded diagram of Stylus C58/C59CME2
Exploded diagram of Stylus C79/D78
Exploded diagram of Stylus C90/C91/C92/D92
APPENDIX Exploded Diagrams 82
102
Only numbered Service Parts
are available.
100
except for C665041,C665061400
EPSON STYLUS C59/C58/ME 2 No.1
Rev.01 C665-ACCE-011
105
106
Only numbered Service Parts
are available.
103
104
104
104
EPSON STYLUS C59/C58/ME 2 No.2
107
Rev.01 C665-CASE-011
200
Only numbered Service Parts
are available.
300
EPSON STYLUS C59/C58/ME 2 No.3
Rev.01 C665-ELEC-011
525
Included No.501&503500
526
Only numbered Service Parts
are available.
707
708
515
702
701
505
504
508
506
507
503
513
511
512
529
510
529
519
520
516
516
517
518
502
709
700
705
704
528
706
501
509
EPSON STYLUS C59/C58/ME 2 No.4
521
527
514
Rev.01 C665-MECH-011
102
100
except for C664031400
EPSON STYLUS D78/C79 No.1
Rev.01 C664-ACCE-001
105
106
103
104
104
104
EPSON STYLUS D78/C79 No.2
107
Rev.01 C664-CASE-001
200
300
EPSON STYLUS D78/C79 No.3
Rev.01 C664-ELEC-001
525
Included No.501&503500
526
708
707
515
701
702
505
504
508
506
507
503
513
530
524
511
512
529
510
529
523
519
520
516
516
517
518
502
709
703
700
704
705
706
528
501
522
509
EPSON STYLUS D78/C79 No.4
521
527
514
Rev.01 C664-MECH-001
102
100
400
EPSON STYLUS D92/C90/C91/C92 No.1
Rev.01 C683-ACCE-011
108
105
103
104
104
EPSON STYLUS D92/C90/C91/C92 No.2
107
104
Rev.01 C683-CASE-011
200
300
EPSON STYLUS D92/C90/C91/C92 No.3
Rev.01 C683-ELEC-011
525
Included No.501&503500
526
708
707
515
701
702
505
504
508
506
507
503
513
530
524
511
512
529
510
529
523
519
520
516
516
517
518
502
709
703
700
704
705
706
528
509
522
501
EPSON STYLUS D92/C90/C91/C92 No.4
521
527
514
Rev.01 C683-MECH-011
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
7.2 Parts List
This manual does not provide parts list.
See SPI (Service Parts Information) for details.
APPENDIX Parts List 95
EPSON Stylus C58/C59/ME 2 Stylus C79/D78/C90/C91/C92/D92 Revision C
7.3 Circuit Diagrams
The control electrical circuit diagrams of this product are shown on the following pages.
APPENDIX Circuit Diagrams 96
Model: Stylus C58/C59/ME 2
Stylus C79/D78
Board: C664 MAIN
Rev.: A
Sheet: 1/1
Model: Stylus C90/C91/C92/D92
Board: C683 MAIN
Rev.: A
Sheet: 1/1
Model: Stylus C58/C59/ME 2
Stylus C79/D78/C90/C91/C92/D92
Board: C664 PSB (100V-120V)
Rev.: A
Sheet: 1/1
Model: Stylus C58/C59/ME 2
Stylus C79/D78/C90/C91/C92/D92
Board: C664 PSE (220V-240V)
Rev.: A
Sheet: 1/1
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