Epson WorkForce 635, WorkForce 620, WorkForce 60 Service Manual
SERVICE MANUAL
Color Inkjet Printer
Epson WorkForce 635/Epson Stylus Office TX620FWD/
Epson Stylus Office BX625FWD/Epson ME OFFICE 960FWD
Epson WorkForce 620/625/Epson Stylus TX560WD/SX525WD/
Epson Stylus Office BX525WD/Epson ME OFFICE 900WD
Epson WorkForce 60/T42WD/
Epson Stylus Office B42WD/Epson ME OFFICE 82WD
Epson ME OFFICE 85ND
CONFIDENTIAL
SEMF09-016
Safety Precautions
All safety procedures described here shall be strictly adhered to by all parties servicing and maintaining this
product.
DANGER
Strictly observe the following cautions. Failure to comply could result in serious bodily injury or loss of life.
1. Always disconnect the product from the power source and peripheral devices when servicing the product or
performing maintenance.
2. When performing works described in this manual, do not connect to a power source until instructed to do so.
Connecting to a power source causes high voltage in the power supply unit and some electronic components
even if the product power switch is off. If you need to perform the work with the power cable connected to a
power source, use extreme caution to avoid electrical shock.
WARNING
Strictly observe the following cautions. Failure to comply may lead to personal injury or loss of life.
1. Always wear protective goggles for disassembly and reassembly to protect your eyes from ink in working. If
any ink gets in your eyes, wash your eyes with clean water and consult a doctor immediately.
2. When using compressed air products; such as air duster, fo r cleaning during repair and maintenance, the use
of such products containing flammable gas is prohibited.
PRECAUTIONS
Strictly observe the following cautions. Failure to comply may lead to personal injury or damage of the product.
1. Repairs on Epson product should be performed only by an Epson certified repair technician.
2. No work should be performed on this product by persons unfamiliar with basic safety knowledge required for
electrician.
3. The power rating of this product is indicated on the serial number/rating plate. Never connect this product to
the power source whose voltages is different from the rated voltage.
4. Replace malfunctioning components only with those components provided or approved by Epson;
introduction of second-source ICs or other non-approved components may damage the product and void any
applicable Epson warranty.
5. In order to protect sensitive microprocessors and circuitry, use static discharge equipment, such as anti-static
wrist straps, when accessing internal components.
6. Do not tilt this product immediately after initial ink charge, especially after performing the ink charge several
times. Doing so may cause ink to leak from the product because it may take some time for the waste ink pads
to completely absorb ink wasted due to the ink charge.
7. Never touch the ink or wasted ink with bare hands. If ink comes into contact with your skin, wash it off with
soap and water immediately. If you have a skin irritation, consult a doctor immediately.
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8. When disassembling or assembling this product, make sure to wear gloves to avoid injuries from metal parts
with sharp edges.
9. Use only recommended tools for disassembling, assembling or adjusting the printer.
10. Observe the specified torque when tightening screws.
11. Be extremely careful not to scratch or contaminate the following parts.
Nozzle plate of the printhead
CR Scale
PF Scale
Coated surface of the PF Roller
Gears
Rollers
LCD
Scanner Sensor
Exterior parts
12. 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.
13. Apply the specified amount of grease described in this manual.
14. Make the specified adjustments when you disassemble the printer.
15. When cleaning this product, follow the procedure described in this manual.
16. When transporting this product after filling the ink in the printhead, pack the printer without removing the
ink cartridges in order to prevent the printhead from drying out.
17. Make sure to install antivirus software in the computers used for the service support activities.
18. Keep the virus pattern file of antivirus software up-to-date.
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About This Manual
This manual, consists of the following chapters, is intended for repair service personnel and includes information
necessary for properly performing maintenance and servicing the product.
CHAPTER 1. DISASSEMBLY / REASSEMBLY
Describes the disassembly/reassembly procedures for main parts/units of the product, and provides the
standard operation time for servicing the product.
CHAPTER 2. ADJUSTMENT
Describes the required adjustments for servicing the product.
CHAPTER 3. MAINTENANCE
Describes maintenance items and procedures for servicing the product.
CHAPTER 4. APPENDIX
Provides the following additional information for reference:
Power-On Sequence
Connector Diagram
Troubleshooting
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. Pay attention to all symbols when they are
used, and always read explanation thoroughly and follow the instructions.
Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed,
could result in serious injury or loss of life.
Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed,
could result in bodily injury, damage or malfunction 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.
For Chapter 1 “Disassembly/Reassembly”, symbols other than indicated above are used to show additional
information for disassembly/reassembly. For the details on those symbols, see "1.2 Disassembly/Reassembly
Procedures (p12) ".
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Revision Status
Revision Date of Issue Description
A April 28, 2010 First Release
B August 6, 2010 Revised Contents
Chapter 1
"1.1.2 Jigs (p11)" has been added.
The Stopper Assy has been added and made change in "Table 1-1 Standard Operation
Time (WorkForce 635 series) (TBD) (p13)" of "1.2.1 Standard Operation Time for
servicing the product (TBD) (p13)".
Made change in "Table 1-2 Standard Operation Time (WorkForce 620 series) (TBD)
(p14)" of "1.2.1 Standard Operation Time for servicing the product (TBD) (p13)".
Made change in "1.2.2 Disassembly/Reassembly Flowchart (p17)".
Made change in "1.3 Detailed Disassembly/Reassembly Procedure for each Part/Unit
(p22)".
• Made change in " Document Pad (WorkForce 635/620 series) (p22)".
• Made change in " Left Housing/Right Housing (WorkForce 635/620 series) (p22)".
• Made change in " Panel Unit (WorkForce 635/620 series) (p22)".
• Made change in " Lower Panel Housing (WorkForce 635/620 series) (p22)".
• Made change in " Panel Board (WorkForce 635/620 series) (p23)".
• Made change in " Ink System Assy (p23)".
• Made change in " FAX Shield Plate/FAX Connector Cover (WorkForce 635 series)
(p23)".
• Made change in " Star Wheel Assy (p23)".
• Made change in " Main Board Unit (WorkForce 635/620 series) (p24)".
• Made change in " Front Frame (p24)".
• Made change in " Main Frame (w/ CR Assy) (p24)".
• Made change in " Printhead (p24)".
• Made change in " ADF Unit (WorkForce 635 series) (1) (p25)".
• Made change in " ADF Unit (WorkForce 635 series) (2) (p25)".
• " Paper Guide Front Assy (installation using the tools) (p26)" has been added.
• " Paper Guide Front Assy (Stopper Holder Idle Roller) (p26)" has been added.
• " LCD (WorkForce 635/620 series) (p26)" has been added.
• Made change in " Front Paper Guide Waste Ink Pad (p26)".
• " Stopper Assy (WorkForce 620 series) (p26)" has been added.
Made change in "1.4 Routing FFCs/cables (p28)".
• Made change in " Inside the USB Cover (WorkForce 635 series) (p28)".
• Made change in " Panel Unit (WorkForce 635 series) (p28)".
• Made change in " Scanner FFC/Scanner Motor Cable (WorkForce 635/620 series)
(p28)".
• Made change in " P/S Board Assy (WorkForce 635/620 series) (p28)".
• Made change in " FAX Assy (WorkForce 635 series) (p28)".
• Made change in " Head FFC (p29)".
• Made change in " Main Board (WorkForce 635 series) (p29)".
• Made change in " PF Motor (p29)".
• Made change in " PE Sensor (p29)".
• Made change in " Inside the USB Cover (WorkForce 620 series) (p30)".
• Made change in " Main Board (WorkForce 620 series) (p30)".
• Made change in " Panel Unit (WorkForce 620 series) (p29)".
Chapter 2
Made change in "2.1 Required Adjustments (p32)".
"2.2.1 PF Timing Belt Tension Measurement/PF Belt Step Check (p38)" has been
added.
"2.2.2 Checking the Platen Gap (p41)" has been added.
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Revision Date of Issue Description
B August 6, 2010
Chapter 3
Made change in "3.1.2 Lubrication (p44)".
Made change in "3.2 Lubrication Points and Instructions (p45)".
• Made change in "Fig. 3-1 Lubrication of the Driven Pulley Holder (p45)".
• Made change in "Fig. 3-2 Lubrication of the Paper Guide Front Assy (PF Roller) (p45)".
• Made change in "Fig. 3-3 Lubrication of the Paper Guide Front Assy (EJ Roller) (p45)".
• Made change in "Fig. 3-5 Lubrication of the PF Holder (p45)".
• Made change in "Fig. 3-6 Lubrication of the Main Frame (1) (p46)".
• Made change in "Fig. 3-8 Lubrication of the EJ Pulley (p46)".
• Made change in "Fig. 3-9 Lubrication of the Ink System Assy (1) (p46)".
• Made change in "Fig. 3-10 Lubrication of the Ink System Assy (2) (p46)".
• Made change in "Fig. 3-11 Lubrication of the CR Assy (p46)".
• Made change in
•
"Fig. 3-15 Lubrication of the Stopper Assy (WorkForce 620 series) (p48)"
"Fig. 3-12 Lubrication of the Scanner Unit (WorkForce 635/620 series) (p47)"
Chapter 4
Made change in "4.1 Power-On Sequence (p50)".
"4.3 Troubleshooting (p54)" has been added.
.
has been added.
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Revision Date of Issue Description
C October 12, 2010 Revised Contents
All chapters
Information of Epson WorkForce 60/T42WD/Epson Stylus Office B42WD/
Epson ME OFFICE 82WD/Epson ME OFFICE 85ND has been added.
Chapter 1
Production name has been added in "1.1 Overview (p11)".
Made change in "1.1.2 Jigs (p11)".
Made change in "1.2 Disassembly/Reassembly Procedures (p12)".
Made change in
• "1-3 Standard Operation Time (WorkForce 60 series) (TBD) (p15)" has been added.
"1.2.1 Standard Operation Time for servicing the product (TBD) (p13)"
Made change in "1.2.2 Disassembly/Reassembly Flowchart (p17)".
• Made change in
• "1.2.2.2 Housing Part (WorkForce 60 series) (p19)" has been added.
• Made change in "1.2.2.3 Printer Mechanism Part (p20)".
Made change in
• Production name has been added in
• Production name has been added in
• Production name has been added in
• Production name has been added in " Left Housing/Right Housing (WorkForce 635/620
series) (p22)".
• Production name has been added in " Panel Unit (WorkForce 635/620 series) (p22)".
• Production name has been added in " Upper Housing (w/ Panel Unit) (WorkForce 635/
620 series) (p22)".
•
Production name has been added in
• Production name has been added in " Panel Board (WorkForce 635/620 series) (p23)".
• Made change in " CR Scale/Extension Spring (p23)".
• Production name has been added in " Shield Plate (w/ Wireless LAN Module)
(WorkForce 635/620 series) (p23)".
• Production name has been added in " Wireless LAN Module (p23)".
• Production name has been added in
• Production name has been added in " CIS Unit (WorkForce 635/620 series) (p24)".
• Made change in " Paper Guide Front Assy (installation using the tools) (p26)".
• Made change in " Paper Guide Front Assy (Stopper Holder Idle Roller) (p26)".
• Production name has been added in " LCD (WorkForce 635/620 series) (p26)".
• " Front Cover (WorkForce 60 series) (p27)" has been added.
• " USB Cover (WorkForce 60 series) (p27)" has been added.
• " Upper Housing (WorkForce 60 series) (p27)" has been added.
• " Stacker Assy (WorkForce 60 series) (p27)" has been added.
• " Main Board Unit (WorkForce 60 series) (p27)" has been added.
"1.2.2.1 Housing Part (WorkForce 635 series/WorkForce 620 series) (p17)"
"1.3 Detailed Disassembly/Reassembly Procedure for each Part/Unit (p22)"
" USB Cover (WorkForce 635/620 series) (p22)"
" Decoration Plate (WorkForce 635/620 series) (p22)"
" Document Pad (WorkForce 635/620 series) (p22)"
" Lower Panel Housing (WorkForce 635/620 series) (p22)"
" Main Board Unit (WorkForce 635/620 series) (p24)"
.
.
.
.
.
.
.
.
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Revision Date of Issue Description
C October 12, 2010
Made change in "1.4 Routing FFCs/cables (p28)".
• Production name has been added in
• Production name has been added in
series) (p28)"
• Production name has been added in
• Production name has been added in
•
" Main Board (WorkForce 60 series) (p30)"
.
" Cover Open Sensor (WorkForce 635/620 series) (p28)"
" Scanner FFC/Scanner Motor Cable (WorkForce 635/620
" P/S Board Assy (WorkForce 635/620 series) (p28)"
" PF Encoder Sensor (WorkForce 635/620 series) (p29)"
has been added.
Chapter 2
Made change in "2.2.1 PF Timing Belt Tension Measurement/PF Belt Step Check
(p38)".
Chapter 3
Made change in "3.2 Lubrication Points and Instructions (p45)".
• Production name has been added in "3-12 Lubrication of the Scanner Unit (WorkForce
635/620 series) (p47)".
• Production name has been added in "3-13 Lubrication of the Duplex Unit (p47)".
• Production name has been added in "3-15 Lubrication of the Stopper Assy (WorkForce
620 series) (p48)".
Chapter 4
Made change in "4.2 Connector Diagram (p53)".
Made change in "4.3.1 Troubleshooting Workflow (p54)".
Made change in "4.3.2 Fatal Error Code (p56)".
.
.
.
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Epson WorkForce 635/620/60 series Revision C
Contents
Chapter 1 Disassembly/Reassembly
1.1 Overview. ................................................................................................................................................................. 11
1.1.1 Tools. ............................................................................................................................................................... 11
1.1.2 Jigs. .................................................................................................................................................................. 11
1.2 Disassembly/Reassembly Procedures ...................................................................................................................... 12
1.2.1 Standard Operation Time for servicing the product (TBD) ............................................................................ 13
1.2.2 Disassembly/Reassembly Flowchart............................................................................................................... 17
1.2.2.1 Housing Part (WorkForce 635 series/WorkForce 620 series)................................................................ 17
1.2.2.2 Housing Part (WorkForce 60 series) ...................................................................................................... 19
1.2.2.3 Printer Mechanism Part .......................................................................................................................... 20
1.3 Detailed Disassembly/Reassembly Procedure for each Part/Unit............................................................................ 22
1.4 Routing FFCs/cables . ............................................................................................................................................... 28
Chapter 2 Adjustment
2.1 Required Adjustments.............................................................................................................................................. 32
2.2 Details of Adjustments............................................................................................................................................. 38
2.2.1 PF Timing Belt Tension Measurement/PF Belt Step Check ........................................................................... 38
2.2.2 Checking the Platen Gap ................................................................................................................................. 41
2.2.3 MAC Address Setting...................................................................................................................................... 42
Chapter 3 Maintenance
3.1 Overview. ................................................................................................................................................................. 44
3.1.1 Cleaning........................................................................................................................................................... 44
3.1.2 Lubrication....................................................................................................................................................... 44
3.2 Lubrication Points and Instructions.......................................................................................................................... 45
Chapter 4 Appendix
4.1 Power-On Sequence. ................................................................................................................................................ 50
4.2 Connector Diagram . ................................................................................................................................................. 53
4.3 Troubleshooting. ....................................................................................................................................................... 54
4.3.1 Troubleshooting Workflow ............................................................................................................................. 54
4.3.2 Fatal Error Code . ............................................................................................................................................. 56
9
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CHAPTER 1
DISASSEMBLY/REASSEMBLY
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Epson WorkForce 635/620/60 series Revision C
1.1 Overview
This chapter describes procedures for disassembling the main parts/units of WorkForce 635 series, WorkForce
620 series and WorkForce 60 series. Unless otherwise specified, disassembled parts/units can be reassembled by
reversing the disassembly procedure. See the cautions or tips for disassembly/reassembly described in "1.3
Detailed Disassembly/Reassembly Procedure for each Part/Unit (p22)".
Read the " Safety Precautions (p3)" before disassembling and reassembling.
When you have to remove units or parts that are not described in this chapter, see the exploded diagrams of SPI
(Service Parts Information).
In this chapter, the product names are called as follows:
WorkForce 635 series:WorkForce 635/Epson Stylus Office TX620FWD/
Epson Stylus Office BX625FWD/ME OFFICE 960FWD
WorkForce 620 series:WorkForce 620/625/Epson Stylus TX560WD/
Epson Stylus SX525WD/Epson Stylus BX525WD/
ME OFFICE 900WD
WorkForce 60 series: WorkForce 60/T42WD/
Epson Stylus Office B42WD/ME OFFICE 82WD/
ME OFFICE 85ND
1.1.1 Tools
Use only specified tools to avoid damaging the printer.
Name Availability EPSON Part Code
(+) Phillips screwdriver #1 O 1080530
(+) Phillips screwdriver #2 O --Flathead screwdriver O --Flathead Precision screwdriver #1 O --Tweezers O --Longnose pliers O --Acetate tape --- 1003963
Nippers O ---
Note 1: Some of the tools listed above are commercially available.
2: EPSON provides the tools listed with EPSON part code.
1.1.2 Jigs
Name Q’ty EPSON Part Code
Paper guide front supporting tool (A)* 1 WorkForce 635 series: 1543170
WorkForce 620 series: 1543171
WorkForce 60 series: 1543170
Paper guide front supporting tool (B)* 1 WorkForce 635 series: 1543539
WorkForce 620 series: 1543544
WorkForce 60 series: 1543539
Paper guide front supporting tool (C)* 3 WorkForce 635 series: 1543541
WorkForce 620 series: 1543547
WorkForce 60 series: 1543541
Printhead supporting tool 2 1543169
Note *: The required tools differ between WorkForce 635 series, WorkForce 620 series and WorkForce 60 series. Be careful not to mix
up the tools.
Disassembly/Reassembly Overview 11
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Epson WorkForce 635/620/60 series Revision C
USB Cover
1
2
(p 22) (p 28)
Ink System Assy
1
1
(p 23) (p 46)
Ref.
Item Description Reference
Parts/unit name
White-letter
Part/unit supplied as an ASP ---
Black-letter
Part/unit not supplied as an ASP ---
Icon
Indicates a practice or condition that could result in
injury or loss of life if not strictly observed.
Indicates the reference
page in blue-letter
Indicates a practice or condition that could result in
damage to, or destruction of equipment if not strictly
observed.
Indicates the reference
page in blue-letter
Indicates the parts that are inevitably broken in the
disassembling procedure, and should be replaced with
a new one for reassembly.
---
Indicates necessary check items in the disassembling/
assembling procedure.
Indicates the reference
page in blue-letter
Indicates supplementary explanation for disassembly
is given.
Indicates the reference
page in blue-letter
Indicates particular tasks to keep quality of the units
are required.
Indicates the reference
page in blue-letter
Indicates particular routing of cables is required.
Indicates the reference
page in blue-letter
Indicates particular adjustment(s) is/are required.
Chapter 2 " Adjustment
(p31)"
Indicates lubrication is required.
Chapter 3 " Maintenance
(p43)"
Indicates the number of screws securing the parts/
units.
---
Indicates the points secured with other than a screw
such as a hook, rib, dowel or the like.
---
Shows removal/installation
as a unit/assy. is available.
Reference page
Shows the screw types and
the specified torque in the
“Screw type/torque list”.
Explanation available in the
Reference Guide
White letters indicate a part/
unit supplied as an ASP.
Black letters indicate a part/
unit not supplied as an ASP.
1.2 Disassembly/Reassembly Procedures
This section describes procedures for disassembling the parts/units in a flowchart format. For some parts/units,
detailed procedures or precautions are provided (accordingly indicated by icons and cell's color). Refer to the
explanations in the example chart below and perform an appropriate disassembling and assembling procedure.
(See "1.3 Detailed Disassembly/Reassembly Procedure for each Part/Unit (p22)".)
For routing cables, see "1.4 Routing FFCs/cables (p28)".
The example below shows how to see the charts on the following pages.
S4
S3
Disassembly/Reassembly Disassembly/Reassembly Procedures 12
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Epson WorkForce 635/620/60 series Revision C
1.2.1 Standard Operation Time for servicing the product (TBD)
The following are the standard operation time for servicing the product. Those are based on the MTTR result
measured using a prototype.
The underlined parts/units are supplied as After Service Parts.
Standard Operation Time for servicing WorkForce 635 series: See Table 1-1
Standard Operation Time for servicing WorkForce 620 series: See Table 1-2
Standard Operation Time for servicing WorkForce 60 series: See Table 1-3
Table 1-1. Standard Operation Time (WorkForce 635 series) (TBD)
Time (second)
Parts/Unit
USB Cover 34 Main Frame (w/ CR Assy) 1134
ADF Unit/Scanner Unit 287 Upper Paper Guide 1150
Scanner Unit
CIS Unit 550 CR Motor 1211
ADF Unit 417 CR Scale Holder 1154
Front ADF Cover 512 CR Assy 1185
Top ADF Cover 514
Right ADF Cover 552 I/C Guide 546
Rear ADF Cover 455
ADF Document
Support
ADF Cover Assy 18 Holder Board Assy 526
ADF Pad Assy 19 CSIC Terminal 577
Document Pad 20
Decoration Plate 57 Holder Board 589
Left Housing
Hinge 300 Front Frame 1167
Upper Housing
(w/ Panel Unit)
Upper Housing 526 Paper Guide Front Assy 1300
Cover Open Sensor 526
Duplex Unit
Right Housing 88 EJ Roller 1216
Panel Unit 225
Panel Gear 230 PF Motor 1406
Panel Lever 230 Frame Base Assy 1300
Lower Panel Housing 333
Panel Board 352 PE Sensor 1352
LCD 394 Stacker Assy 1347
Button 533 Frame Base 1404
Upper Panel Housing 575
Cassette Assy
Pickup Assy 25
Waste Ink Tray Assy
Paper Sheet Assy 12 Extension Spring 566
Replace-
ment
417 PE Holder Assy 1176
429 Printhead 626
88 Head FFC 1216
478 Star Wheel Assy 1193
4 EJ Pulley 1208
4 CR Scale 542
24 Cam Holder Assy 547
Adjust-
ment
Total
Parts/Unit
Hinge Cover
Cartridge/Cartridge
Cover
Inner Head Cable
Cover
CR Contact
Module
Front Paper Guide
Waste Ink Pad
PF Holder/PF Timing
Belt
Lower Paper Guide
Waste Ink Pad
Extension Spring
(Upper Paper Guide)
Driven Pulley/Extension
Spring
Replace-
ment
540
555
538
1431
1334
1305
548
599
Time (second)
Adjust-
ment
Total
Disassembly/Reassembly Disassembly/Reassembly Procedures 13
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Epson WorkForce 635/620/60 series Revision C
Table 1-1. Standard Operation Time (WorkForce 635 series) (TBD)
Time (second)
Parts/Unit
FAX Grounding Plate 559 FAX Assy 643
PF Encoder Sensor 759
Main Board Unit 746 Fax Board 721
Shield Plate
(w/ Wireless LAN Module)
Wireless LAN Module 790 Ink System Assy 570
Main Board 962
P/S Board Assy 538
Replace-
ment
918 Right Frame 517
Adjust-
ment
Total
Parts/Unit
FAX Shield Plate/
FAX Connector Cover
Waste Ink Pad
(Bottom of Ink System Assy)
Replace-
ment
721
575
Time (second)
Adjust-
ment
Total
Table 1-2. Standard Operation Time (WorkForce 620 series) (TBD)
Time (second)
Parts/Unit
USB Cover 34 Main Frame (w/ CR Assy) 897
Scanner Unit 114 Upper Paper Guide 913
CIS Unit 247 PE Holder Assy 939
Document Cover
Document Pad 20 CR Scale Holder 917
Decoration Plate 43 CR Assy 948
Left Housing 74
Hinge 127 I/C Guide 359
Upper Housing
(w/ Panel Unit)
Upper Housing
Cover Open Sensor 339 Holder Board Assy 339
Duplex Unit 4 CSIC Terminal 390
Right Housing 74
Panel Unit 211 Holder Board 385
Panel Gear/Panel Lever 225 Head FFC 979
Lower Panel Housing 324 Front Frame 930
Panel Board 465 Star Wheel Assy 956
LCD 507 Paper Guide Front Assy 1063
LCD Cover 510
Button 554 EJ Pulley 971
Upper Panel Housing 599 EJ Roller 979
Cassette Assy 4
Pickup Assy
Waste Ink Tray Assy 24 Frame Base Assy 1063
Main Board Unit 509
Shield Plate
(w/ Wireless LAN
Module)
Replace-
ment
60 CR Motor 974
322
445 Printhead 439
25 PF Motor 1169
666 PE Sensor 1115
Adjust-
ment
Total
Parts/Unit
Hinge Cover
Cartridge/Cartridge
Cover
Inner Head Cable
Cover
CR Contact
Module
Front Paper Guide
Waste Ink Pad
PF Holder/PF Timing
Belt
Lower Paper Guide
Waste Ink Pad
Replace-
ment
353
368
351
1194
1097
1068
Time (second)
Adjust-
ment
Total
Disassembly/Reassembly Disassembly/Reassembly Procedures 14
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Epson WorkForce 635/620/60 series Revision C
Table 1-2. Standard Operation Time (WorkForce 620 series) (TBD)
Time (second)
Parts/Unit
Wireless LAN Module 553 Stacker Assy 1110
Main Board 666 Frame Base 1167
PF Encoder Sensor 522
Right Frame 330 CR Scale 355
Ink System Assy. 383
Waste Ink Pad
(Bottom of Ink System Assy)
P/S Board Assy 351 Extension Spring 379
Stopper Assy
Replace-
ment
388 Cam Holder Assy 360
Adjust-
ment
Total
Parts/Unit
Extension Spring
(Upper Paper Guide)
Driven Pulley/Extension
Spring
Replace-
ment
361
412
Time (second)
Adjust-
ment
Total
Table 1-3. Standard Operation Time (WorkForce 60 series) (TBD)
Time (second)
Parts/Unit
USB Cover 34 Main Frame (w/ CR Assy) 550
Printer Cover 9 Upper Paper Guide 566
Upper Housing
(w/ Printer Cover)
Upper Housing
Duplex Unit 4 C R Scale Holder 570
Cassette Assy 4 CR Assy 601
Pickup Assy 25
Waste Ink Tray Assy 24 I/C Guide 199
Stacker Assy 128
Front Cover
Panel Unit 44 Holder Board Assy 179
Panel Board 101 CSIC Terminal 230
LED Lens 94
Button 126 Holder Board 242
Front Panel Cover 126 Head FFC 632
Stacker Open Sensor 56 Paper Guide Front Assy 716
Main Board Unit 348
Wireless LAN Module
Shield Plate
(w/ Cover Open Sensor)
Main Board 581
Cover Open Sensor 354 PF Motor 822
PF Encoder Sensor 361 Frame Base Assy 716
Front Frame 583
Replace-
ment
162 PE Holder Assy 592
171 CR Motor 627
13 Printhead 279
392 EJ Pulley 616
581 EJ Roller 624
Adjust-
ment
Total
Parts/Unit
Hinge Cover
Cartridge/Cartridge
Cover
Inner Head Cable
Cover
CR Contact
Module
Front Paper Guide
Waste Ink Pad
PF Holder/PF Timing
Belt
Lower Paper Guide
Waste Ink Pad
Replace-
ment
193
208
191
847
750
721
Time (second)
Adjust-
ment
Total
Disassembly/Reassembly Disassembly/Reassembly Procedures 15
Confidential
Epson WorkForce 635/620/60 series Revision C
Table 1-3. Standard Operation Time (WorkForce 60 series) (TBD)
Time (second)
Parts/Unit
Star Wheel Assy 609 PE Sensor 768
CR Scale 195 Frame Base 773
Driven Pulley/Extension
Spring
Right Frame 170 Cam Holder Assy 200
Ink System Assy 223 Extension Spring 219
Waste Ink Pad
(Bottom of Ink System
Assy)
Replace-
ment
252
228 Power Supply Unit 83
Adjust-
ment
Total
Parts/Unit
Extension Spring
(Upper Paper Guide)
Replace-
ment
201
Time (second)
Adjust-
ment
Total
Disassembly/Reassembly Disassembly/Reassembly Procedures 16
Confidential
Epson WorkForce 635/620/60 series Revision C
S3
S4
S4
S4
S4
S1
S2
S3
S4
S5
S6
S7
S8S9S10
S11
S12
S13
S14
1.2.2 Disassembly/Reassembly Flowchart
1.2.2.1 Housing Part (WorkForce 635 series/WorkForce 620 series)
START
USB Cover
S3
(p 22) (p 28)
ADF Unit/
Scanner Unit
S3 S8
(p 28)
Hinge
S4
---
Decoration Plate
Left Housing
Duplex Unit
1
2
(p 33)
---
---
Scanner Unit
2
---
S3
(p 30)
1
---
Decoration Plate
3
6
(p 22)
Left Housing
1
2
(p 22)
Panel Unit
Waste Ink Tray
Assy
(p 33)
Right Housing
S4
(p 22)
Panel Unit
Cassette Assy
1
4
(p 33)
---
---
Pickup Assy
1
2
---
---
1
Stacker Assy
---
Stopper Assy
S4
(p 26) (p 48)
---
Paper Sheet Assy
---
4
---
1
Document Cover
2
2
(p 22)
---
4
ADF Cover Assy
---
2
(p 25)
Document Pad
---
---
(p 22)
ADF Pad Assy
---
4
(p 25)
Document Pad
---
---
(p 22)
1
1
(p 18)
---
(p 22) (p 28)
3
6
(p 22) (p 29)
3
6
2
(p 18)
WorkForce 635 series specific parts/unit
Right Housing
Upper Housing
(w/ Panel Unit)
S4
(p 22)
A
(p 20)
WorkForce 620 series specific parts/unit
WorkForce 635 series/
WorkForce 620 series common parts/unit
Screw type/torque list
4
---
(p 18)
3
Symbol Screw type Torque
C.B.P-TITE SCREW,2.5X8,F/ZN-3C 4 1 kgf·cm
C.B.P-TITE SCREW,2X8,F/ZN-3C 2 0.5 kgf·cm
C.B.P-TITE SCREW,3X10,F/ZB-3C 6 1 kgf·cm
C.B.P-TITE SCREW,3X10,F/ZN-3C 6 1 kgf·cm
C.B.S-TITE SCREW,3X10,F/ZN-3C 6 1 kgf·cm
C.B.S-TITE SCREW,3X6,F/ZN-3C 4 0.5 kgf·cm
C.B.S-TITE SCREW,3X6,F/ZN-3C 6 1 kgf·cm
See "1.2.2.2Housing Part (WorkForce 60 series) (p19)" for
removing the housing part of WorkForce 60 series.
When replacing the Printer Mechanism supplied as an ASP, make
sure to adjust the Stopper Holder Idle Roller in the proper
attachment position, and then perform the PF Timing Belt tension
measurement. See " Paper Guide Front Assy (Stopper Holder Idle
Roller) (p26)" and "2.2.1PF Timing Belt Tension Measurement/
PF Belt Step Check (p38)" for the details.
C.B.S-TITE SCREW,3X6,F/ZN-3C 8 1 kgf·cm
C.P.SCREW,2.5X6,F/ZN-3C 2 0.5 kgf·cm
C.P.SCREW,3X4,F/ZN-3C 2 0.5 kgf·cm
C.P.SCREW,3X4,F/ZN-3C 4 1 kgf·cm
C.P.SCREW,2.6X3,F/ZN-3C 4 1 kgf·cm
C.B.P-TITE SCREW(S-P1),3X12,F/ZN-3C 5 - 6 kgf·cm
C.B.P-TITE SCREW,2.5X8,F/ZN-3C 2 0.5 kgf·cm
S15
C.B.P-TITE SCREW,3X4,F/ZN-3C 6 1 kgf·cm
Flowchart 1-1. Disassembly Flowchart of Housing Part (1)
Disassembly/Reassembly Disassembly/Reassembly Flowchart 17
Confidential
Epson WorkForce 635/620/60 series Revision C
S4
S4
S4
S4
Ref.
S4
S4
S4
S15
(p 17) (p 17)
1 2 3
ADF Unit
(p 25)
Front ADF
Cover
(p 25)
Top ADF Cover
(p 25)
---
---
Scanner Unit
---
3
(p 28)
Rear ADF Cover
3
8
S4
(p 25)
1
3
ADF Document
Support
(p 25)
3
---
2
2
Scanner
(p 28)
CIS Unit
(p 24)
(p 28) (p 47)
---
Panel Gear/
Panel Lever
---
4
---
Lower Panel
Housing
6
2
(p 22)
Panel Board
(p 23)
---
---
Lower Panel
Housing
5
1
(p 22)
6
---
Panel Board
4
8
---
(p 23)
(p 17)
Panel Unit
Upper Housing
---
Cover Open
Sensor
(p 28)
---
---
WorkForce 635 series specific parts/unit
---
2
Right ADF
Cover
1
5
(p 25)
See "1.2.2.2Housing Part (WorkForce 60 series) (p19)" for
removing the housing part of WorkForce 60 series.
When replacing the Printer Mechanism supplied as an ASP, make
sure to adjust the Stopper Holder Idle Roller in the proper
attachment position, and then perform the PF Timing Belt tension
measurement. See " Paper Guide Front Assy (Stopper Holder Idle
Roller) (p26)" and "2.2.1PF Timing Belt Tension Measurement/
PF Belt Step Check (p38)" for the details.
Button
LCD
---
---
---
S2
(p 26)
LCD Cover
---
Upper Panel
Housing
---
---
---
Flowchart 1-2. Disassembly Flowchart of Housing Part (2)
WorkForce 620 series specific parts/unit
Button
WorkForce 635 series/
2
---
---
---
---
Upper Panel
Housing
---
---
---
---
---
Screw type/torque list
Symbol Screw type Torque
S1
C.B.P-TITE SCREW,2.5X8,F/ZN-3C 4 1 kgf·cm
S2
C.B.P-TITE SCREW,2X8,F/ZN-3C 2 0.5 kgf·cm
S3
C.B.P-TITE SCREW,3X10,F/ZB-3C 6 1 kgf·cm
S4
C.B.P-TITE SCREW,3X10,F/ZN-3C 6 1 kgf·cm
S5
C.B.S-TITE SCREW,3X10,F/ZN-3C 6 1 kgf·cm
S6
C.B.S-TITE SCREW,3X6,F/ZN-3C 4 0.5 kgf·cm
S7
C.B.S-TITE SCREW,3X6,F/ZN-3C 6 1 kgf·cm
S8
C.B.S-TITE SCREW,3X6,F/ZN-3C 8 1 kgf·cm
S9
C.P.SCREW,2.5X6,F/ZN-3C 2 0.5 kgf·cm
S10
C.P.SCREW,3X4,F/ZN-3C 2 0.5 kgf·cm
S11
C.P.SCREW,3X4,F/ZN-3C 4 1 kgf·cm
S12
C.P.SCREW,2.6X3,F/ZN-3C 4 1 kgf·cm
S13
C.B.P-TITE SCREW(S-P1),3X12,F/ZN-3C 5 - 6 kgf·cm
S14
C.B.P-TITE SCREW,2.5X8,F/ZN-3C 2 0.5 kgf·cm
WorkForce 620 series common parts/unit
C.B.P-TITE SCREW,3X4,F/ZN-3C 6 1 kgf·cm
Disassembly/Reassembly Disassembly/Reassembly Flowchart 18
Confidential
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