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 " 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

series) (p28)"

• 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

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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

(p 22) (p 28)

Ink System Assy

(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.

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

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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

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Epson WorkForce 635/620/60 series Revision C

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

(p 22) (p 28)

ADF Unit/

Scanner Unit

S3 S8

(p 28)

Hinge

---

Decoration Plate

Left Housing

Duplex Unit

(p 33)

---

Scanner Unit

---

(p 30)

---

Decoration Plate

(p 22)

Left Housing

(p 22)

Panel Unit

Waste Ink Tray

Assy

(p 33)

Right Housing

(p 22)

Panel Unit

Cassette Assy

(p 33)

---

Pickup Assy

---

Stacker Assy

---

Stopper Assy

(p 26) (p 48)

---

Paper Sheet Assy

---

Document Cover

(p 22)

---

ADF Cover Assy

---

(p 25)

Document Pad

---

(p 22)

ADF Pad Assy

---

(p 25)

Document Pad

---

(p 22)

(p 18)

---

(p 22) (p 28)

(p 22) (p 29)

(p 18)

WorkForce 635 series specific parts/unit

Right Housing

Upper Housing (w/ Panel Unit)

(p 22)

(p 20)

WorkForce 620 series specific parts/unit

WorkForce 635 series/ WorkForce 620 series common parts/unit

Screw type/torque list

---

(p 18)

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

Ref.

S15

(p 17) (p 17)

1 2 3

ADF Unit

(p 25)

Front ADF

Cover

(p 25)

Top ADF Cover

(p 25)

---

Scanner Unit

---

(p 28)

Rear ADF Cover

(p 25)

ADF Document

Support

(p 25)

---

Scanner

(p 28)

CIS Unit

(p 24)

(p 28) (p 47)

---

Panel Gear/ Panel Lever

---

Lower Panel

Housing

(p 22)

Panel Board

(p 23)

---

Lower Panel

Housing

(p 22)

---

Panel Board

---

(p 23)

(p 17)

Panel Unit

Upper Housing

---

Cover Open

Sensor

(p 28)

---

WorkForce 635 series specific parts/unit

---

Right ADF

Cover

(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

---

(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/

---

Upper Panel

Housing

---

Screw type/torque list

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

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

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

Epson WorkForce 635/620/60 series Revision C

1.2.2.2 Housing Part (WorkForce 60 series)

START

Front Cover

(p 27)

Panel Unit

(p 27)

Stacker Open

Sensor

---

USB Cover

Printer Cover

---

Duplex Unit

---

(p 33)

Waste Ink Tray

Assy

(p 33)

Cassette Assy

(p 33)

---

Pickup Assy

1 1

---

--1

USB Cover

(p 27)

P/S Board Assy

(p 37)

---

Panel Board

--2

---

LED Lens

Button

Upper Housing

(w/ Printer Cover)

(p 27)

Cover Open

Sensor

---

(p 20)

---

WorkForce 635 series specific parts/unit

---

Printer Cover

Front Panel Cover

---

Stacker Assy

--2

(p 27)

--4

Upper Housing

---

 See "1.2.2.1Housing Part (WorkForce 635 series/WorkForce 620 series) (p17)" for

disassembly of the Housing Part of WorkForce 635/620 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.

---

Screw type/torque list

Sym

bol

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

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

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

S15

C.B.P-TITE SCREW,3X4,F/ZN-3C 6 1 kgf·cm

WorkForce 635 series/W orkFor ce 620 series/ WorkForce 60 series common parts/unit

Screw type Torque

Flowchart 1-3. Disassembly Flowchart of Housing Part (3)

Disassembly/Reassembly Disassembly/Reassembly Flowchart 19

Confidential

Epson WorkForce 635/620/60 series Revision C

S15

Ref.

S13

Ref.

1.2.2.3 Printer Mechanism Part

WorkForce 635 series/WorkForce 620 series:

WorkForce 60 series:

FAX Grounding

Plate

---

Main Board Unit

(p 24)

(p 29) (p 33)

Right Frame

Main Frame

(w/ CR Assy)

S4 S8

S13

(p 24)

(p 46) (p 34)

Front Frame

(p 29)

(p 19)

(p 17)

Extension Spring

(Upper Paper Guide)

---

CR Scale/

Extension Spring

---

Cam Holder

Assy

Right Frame

---

FAX Grounding

Plate

Hinge Cover

Cartridge/

Cartridge Cover

Holder Board

Assy

---

P/S Board Assy

---

Main Board Unit

S4 S6

(p 24)

(p 30) (p 33)

(p 21)

---

(p 23)

Driven Pulley/

Extension Spring

(p 45)

---

PF Encoder Sensor

S14

(p 29)

(p 23)

Extension Spring

---

Ink System Assy

---

(p 23) (p 46)

Waste In k Pad (Bottom of Ink

System Assy)

---

FAX Assy

S3 S4

(p 28)

FAX Shield Plate/

FAX Connector

Cover

(p 23)

---

I/C Guide

---

Inner Head Cable

Cover

---

CSIC Terminal

---

Holder Board

---

Note "*": Only the Hinge Cover Cartridge is supplied as an ASP.

(p 28) (p 37)

CR Contact

Module

---

Main Board Unit

(p 27)

(p 30) (p 33)

---

(p 21)

Fax Board

---

Holder Board

Assy

---

WorkForce 635 series specific parts/unit

WorkForce 620 series specific parts/unit

WorkForce 60 series specific parts/unit

---

WorkForce 635 series/WorkForce 620 series/ WorkForce 60 series common parts/unit

(p 24)

(p 46)

Star Whee l Assy

(p 23) (p 35)

Ink System Assy

Paper Guide

Front Assy

(p 26)

(p 45)

(p 21)

(p 35)

---

(p 35)

Printhead

(p 24) (p 37)

---

EJ Pulley

---

(p 36) (p 46)

When replacing the Printer Mechanism supplied as an ASP, make

(p 21)

EJ Roller

---

(p 36) (p 45)

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.

Flowchart 1-4. Disassembly Flowchart of Printer Mechanism Part (1)

Screw type/torque list

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

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

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 C.B.P-TITE SCREW,3X4,F/ZN-3C 6 1 kgf·cm

Disassembly/Reassembly Disassembly/Reassembly Flowchart 20

Confidential

Epson WorkForce 635/620/60 series Revision C

S1S2S3

S10

S11

S12

S13

S14

S12

S10

(p 20)

Waste Ink Tray

Assy

Cassette Assy

Pickup Assy

P/S Board Assy

Waste In k Pad (Bottom of Ink

System Assy)

FAX Assy

Frame Base

*2*3

Assy

(p 36)

WorkForce 635 series/WorkForce 620 series:

WorkForce 60 series:

Shield Plate

(w/ Wireless LAN

Module)

(p 23)

Main Board

(p 33)

---

(p 20)

Shield Plate

(w/ Wireless LAN

Module)

(p 23)

---

(p 20)

Wireless LAN

Module

(p 23)

(p 20)

Upper Paper

Guide

---

(p 34)

---

PE Holder Assy

(p 34)

---

CR Scale Holder

---

Hinge Cover

Cartridge/

Cartridge Cover

I/C Guide

Inner Head Cable

Cover

CR Motor

---

S11

(p 28) (p 34)

---

Stopper Holder/

Idle Roller

EJ Pulley

EJ Roller

S15

---

(p 20)

---

Front Paper Gu ide

Waste Ink Pad

---

(p 26)

Holder Board

Assy

Printhead

PF Holder/

PF Timing Belt

---

CR Motor

(p 36) (p 45)

---

CR Assy

---

PF Motor

---

(p 35) (p 46)

---

Stacker Assy

Frame Base

(p 36)

Lower Paper Guide

Waste Ink Pad

(p 37)

---

PE Sensor

(p 29) (p 37)

---

Head FFC

---

(p 29)

(p 29) (p 36)

Screw type/torque list

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

Note "*1": Supplied as an ASP only for WorkForce 635 series/WorkForce 620 series.

---

"*2": Supplied as an ASP only for WorkForce 635 series/WorkForce 60 series. "*3": The shape of the parts are different but the procedure is the same between

WorkForce 635 series/WorkForce 620 series and WorkForce 60 series. "*4": See (p 19) for Stacker Assy of WorkForce 60 series. "*5": This is not mounted on Epson ME OFFICE 85ND.

When replacing the Printer Mechanism supplied as an ASP, make

WorkForce 635 series specific parts/unit

WorkForce 620 series specific parts/unit

sure to adjust the Stopper Holder Idle Roller in the proper attachment position, and then perform the PF Timing Belt tension measurement.

WorkForce 60 series specific parts/unit

See " Paper Guide Front Assy (Stopper Holder Idle Roller) (p26)" and

"2.2.1PF Timing Belt Tension Measurement/PF Belt Step Check

WorkFor ce 635 series/WorkForce 620 series/ WorkForce 60 series common parts/unit

(p38)" for the details.

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 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 1-5. Disassembly Flowchart of Printer Mechanism Part (2)

Disassembly/Reassembly Disassembly/Reassembly Flowchart 21

Confidential

Epson WorkForce 635/620/60 series Revision C

Hook Rib

C.B.P-TITE SCREW,3X10,F/ZB-3C (6 ± 1 kgf·cm)

USB Cover

Decoration Plate

Hook

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

Decoration Plate

No gap

ADF Unit (WorkForce 635 series) Document Cover (WorkForce 620 series)

Reference position

Document Pad

Standard line Double-sided tape

No gap

Right Housing

Left Housing

Hole Rib

Positioning hole

Dowel

Left

Panel FFC

Cover Open Sensor cable

Right

Document Cover

Dowel

Upper Housing

Panel Shaft HolderLeft

Hook

Right

Panel Shaft Holder

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

Panel Unit

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

Upper Housing

Panel Unit

WorkForce 635 series

Lower Panel Housing

WorkForce 620 series

Lower Panel Housing

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

1.3 Detailed Disassembly/Reassembly Procedure for each Part/Unit

USB Cover (WorkForce 635/620 series)

Remove the USB Cover by sliding it in the direction of the arrow shown above carefully not to damage the hooks (x2) that secure the USB Cover.

Decoration Plate (WorkForce 635/620 series)

Remove the Decoration Plate by rotating it in the direction of the arrow shown above carefully not to damage the hooks (x2) that secure the Decoration Plate.

Tighten the screws in the order indicated in the figure above.

Document Pad (WorkForce 635/620 series)

 First align one bottom corner of the Document Pad with the

reference position and attach it with double-sided tape.

 Make sure there is no gap on the left and bottom sides of the

Document Pad.

Left Housing/Right Housing (WorkForce 635/620 series)

 Be careful not to damage the hooks (x1 each) and ribs (x7

each) that secure the Left Housing/Right Housing.

 Be careful to remove the Left Housing since the Panel FFC and

the Cover Open Sensor cable are routed inside it.

When installing the Left/Right Housing, align the positioning holes with the dowels of the Upper Housing.

Document Cover (WorkForce 620 series)

Panel Unit (WorkForce 635/620 series)

Upper Housing (w/ Panel Unit)

Lower Panel Housing (WorkForce 635/620 series)

(WorkForce 635/620 series)

When removing the Document Cover, follow the procedure below.

1. With the Document Cover open, release the outside dowel on the right by pushing it from the rear of the printer.

2. Release the outside dowel on the left, and remove the Document Cover.

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 22

Remove the screws (x3) with the Panel Unit open, and turn the Panel Unit in the direction of the arrow to release the hooks of the Panel Shaft Holders from the Upper Housing, then remove the Panel Unit.

Secure the hooks of the Panel Shaft Holders firmly to the Upper Housing, and tighten the screws in the order indicated in the figure above.

Tighten the screws in the order indicated in the figure above.

Confidential

Epson WorkForce 635/620/60 series Revision C

Panel Board

WorkForce 635 series

1 2

5 6

Panel Board

WorkForce 620 series

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

CR Scale

Extension spring

Hook

Cut section

Longer leg

Cam Holder Assy

D/E Lever

Protrusion

Groove

8 ± 1 mm

Hole of Frame Base

Waste Ink Tube

FAX Shield Plate

FAX Connector Cover

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

Grounding Spring

Star Wheel Assy

Left

Rib

WorkForce

635 series only

C.B.S-TITE SCREW,3X6,F/ZN-3C (6 ± 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.B.S-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

WorkForce 635 series

WorkForce 620 series

WorkForce 60 series

C.B.S-TITE SCREW,3X6,F/ZN-3C (6 ± 1 kgf·cm)

Panel Board (WorkForce 635/620 series)

CR Scale/Extension Spring

Cam Holder Assy

Ink System Assy

Tighten the screws in the order indicated in the figure above.

FAX Shield Plate/FAX Connector Cover

(WorkForce 635 series)

 Install the CR Scale with the cut section up.  Attach it to the hook on the left of the printer with the longer

leg of the extension spring to the front of the printer.

Star Wheel Assy

When installing the Cam Holder Assy, insert the protrusion of the D/E Lever into the groove of the Cam Holder Assy.

Shield Plate (w/ Wireless LAN Module)

(WorkForce 635/620 series)

When installing the Ink System Assy, insert the Waste Ink Tube (8 ± 1 mm from the tip) into the hole on the Frame Base.

Wireless LAN Module

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 23

Tighten the screws in the order indicated in the figure above.

Hook the leg of the grounding spring to the rib and attach the

Tighten the screws in the order indicated in the figure above.

spring as shown in the figure above.

Confidential

Epson WorkForce 635/620/60 series Revision C

PF Encoder Cover

Double-sided tape (27 x 4 mm)

MAC Address Label

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

C.B.S-TITE SCREW,3X6,F/ZN-3C (4 ± 0.5 kgf·cm)

PF Encoder Cover

Rib

Screw hole

Main Board Unit

Timing Belt

Belt clamp

Torsion spring

Spacer

Label

CIS Carriage

Cutout

Bottom of Front Frame

1.6 mm

Antistatic cloth Antistatic cloth

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

Front Frame

Right

Left

D/E Lever

Cutout

Rear

Nozzle plate surface of Printhead

Main Frame

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm) C.B.S-TITE SCREW,3X6,F/ZN-3C (8 ± 1 kgf·cm) C.B.P-TITE SCREW(S-P1),3X12,F/ZN-3C (5 - 6 kgf·cm)

1 2

C.B.P-TITE SCREW,2.5X8,F/ZN-3C (4 ± 1 kgf·cm)

Printhead

Step 2-3

Printhead supporting tool

Rear

Carriage

Step 1

Printhead supporting tool

Main Board Unit (WorkForce 635/620 series)

Do not damage or contaminate the MAC Address Label.

 Align the rib (x1) and screw hole of the PF Encoder Cover with the Main Board Unit as shown above, and secure the PF Encoder Cover with

double-sided tape (x1).

 Tighten the screws in the order indicated in the figure above.  When replacing the Main Board, it is necessary to set the MAC address if the EEPROM data cannot be read out from the old Main Board. In such

a case, refer to "2.2.3MAC Address Setting (p42)" and set it.

CIS Unit (WorkForce 635/620 series)

Confirm the label of the CIS Unit, and make sure to install the proper spacers on both ends of the CIS Unit corresponding to the label.

• A: Spacer, CIS, A17 (black)

• B: Spacer, CIS, B19 (white)

• C: Spacer, CIS, C21 (gray)

 When installing the Timing Belt, secure the Timing Belt and

the CIS Carriage with the Belt Clamp, and attach the torsion spring to the location shown above.

Front Frame

 Tighten the screws in the order indicated in the figure above.  When attaching the antistatic cloth, make sure to follow the

standard below and attach it to the Front Frame.

• Align the antistatic cloth with the edge of the cutout on the bottom of the Front Frame.

• Attach it at 1.6 mm away from the edge of the Front Frame.

Main Frame (w/ CR Assy)

When removing the Main Frame with the Printhead installed on the Carriage, be careful not to damage the nozzle plate surface of the Printhead.

When removing the Main Frame, follow the procedure below.

1. Slide the D/E Lever toward the 0-digit side to align the D/E Le ver with the cutout of the Main Frame, and detach the D/E Lever from the Main Frame.

2. Release the CR Motor cable from the hooks of the Main Frame and ribs of the Frame Base. (See "CR Motor (p28)".)

3. Release the Head FFC from the ribs of the Front Frame. (See "Head FFC (p29)".)

4. Remove the screws (x4) that secure the Main Frame, and remove the Main Frame from the Frame Base.

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 24

When installing the Printhead, use the printhead supporting tools (x2) and follow the procedure below.

1. Move the carriage to the center, and from the rear of the printer, insert the supporting tools one each on the 0-digit side and 80-digit side until they touch the Main Frame.

2. Move the carriage toward the 80-digit side to the end, and install the Printhead to the carriage.

3. Tighten the screws in the order indicated in the figure above.

Printhead

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Rear ADF Cover

ADF Cover Assy

Top ADF Cover

ADF Unit

Hook Dowel Screw hole

Front ADF Cover

Release hooks that secure Front ADF Cover in the direction of the arrow.

Front ADF Cover

ADF Pad Assy

ADF Document Support

ADF Unit

Hook Dowel Screw hole

Right ADF Cover

Release hooks that secure Right ADF Cover in the direction of the arrow.

Right ADF Cover

ADF Unit (WorkForce 635 series) (1)

ADF Unit (WorkForce 635 series) (2)

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 25

The figures above indicate the hooks, dowels and screws that secure the parts and units.

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Epson WorkForce 635/620/60 series Revision C

Fig. 2: Tool position (80-digit side)

Paper Guide Front Assy

Frame Base

C.B.P-TITE SCREW(S-P1),3X12,F/ZN-3C (5 - 6 kgf·cm)

Fig. 3: Screws tightening order

Paper Guide Front Assy

Fig. 1: Tool positions (bottom)

Paper guide front supporting tools for WorkForce 635 series/WorkForce 60 series

224 mm

123 mm119 mm

186 mm

Front of printer

Paper guide front supporting tools for WorkForc e 620 series

89.5 mm

315 mm

Insert the tools into hole of Frame Base.

87 mm

When installing the Paper Guide Front Assy, use the paper guide front supporting tools (x4)

and follow the procedure below.

1. On a flat table, put the paper guide front supporting tools B and C on the positions shown in Fig. 1.

2. Put the Frame Base over the

paper guide front supporting tools B and C, and confirm that the tools are placed on the correct positions.

3. Install the Paper Guide Front Assy to the Frame Base.

4. Put the

paper guide front supporting tool A on

the position shown in Fig. 2.

5. Tighten the screws (x4) in the order indicated in Fig. 3 to secure the Paper Guide Front Assy.

6. After securing the Paper Guide Front Assy, install the PF Holder and the Stopper Holder Idle Roller. (See "Paper Guide Front Assy

(Stopper Holder Idle Roller) (p26)".)

7. Perform "2.2.1PF Timing Belt Tension

Measurement/PF Belt Step Check (p38)".

Left

Stopper Holder Idle Roller

PF Timing Belt

C.B.S-TITE SCREW,3X4,F/ZN-3C (6 ± 1 kgf·cm)

PF Holder

Less than 0.3 mm

LCD

C.B.P-TITE SCREW,2X8,F/ZN-3C (2 ± 0.5 kgf·cm)

Leg of Front Paper Guide Waste Ink Pad

Bottom of Paper Guide Front Assy

Front Paper Guide Waste Ink Pad Paper Guide Front Assy

Dowel

Cam slider

Slider base

Stopper

Compression spring

Extension spring

Stopper lever

Paper Guide Front Assy (installation using the tools)

A B C

12.5 mm

A B C

12.5 mm

45.5 mm

20 mm

8 mm

34.5 mm

8 mm

15 mm

44 mm

33 mm

45 mm

33 mm

34 mm

33 mm

Paper Guide Front Assy (Stopper Holder Idle Roller)

LCD (WorkForce 635/620 series)

Attach the Stopper Holder Idle Roller so that the gap between it and the PF Holder becomes less than 0.3 mm.

If the gap becomes larger than 0.3 mm, replace the Stopper Holder Idle Roller with the longer one (the following “1”) or the longest one (the following “2”) one by one to until proper gap is obtained.

1. Stopper Holder Idle Roller, PF;C (Parts code: 1540328)

Tighten the screws in the order indicated in the figure above.

2. Stopper Holder Idle Roller, PF;B (Parts code: 1540006)

Front Paper Guide Waste Ink Pad

Stopper Assy (WorkForce 620 series)

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 26

 Install the Front Paper Guide Waste Ink Pad under the ribs

(x12) of the Paper Guide Front Assy without any gap.

 After installing the Front Paper Guide Waste Ink Pad, check if

all the legs of the Front Paper Guide Waste Ink Pad come out from the holes of the Paper Guide Front Assy correctly.

If any of the parts of the Stopper Assy comes off when removing it, be sure to assemble the Stopper Assy as shown above.

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Epson WorkForce 635/620/60 series Revision C

Hook Rib

Front Cover

Back of Front Cover

Screw boss

Hooks

Rib

USB Cover

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

Upper Housing

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

Panel Unit

Stacker Open Sensor

Groove

Stacker Open Sensor

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

Stacker Lock

Stacker Assy

Bottom

Hooks to secure

Stacker Lock

Stacker Assy

Shaft & bearing

Frame Base

Step 1-2

Step 3

Positioning

hole

Rib

PF Encoder Cover

MAC Address Label

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

C.B.S-TITE SCREW,3X6,F/ZN-3C (6 ± 1 kgf·cm) C.B.S-TITE SCREW,3X6,F/ZN-3C (4 ± 0.5 kgf·cm)

Cutout

Dowel

Main Board Unit

PF Encoder Cover

Front Cover (WorkForce 60 series)

USB Cover (WorkForce 60 series)

Upper Housing (WorkForce 60 series)

Panel Unit (WorkForce 60 series)

Be careful not to damage the hooks (x2) and ribs (x4) that secure the Front Cover.

Stacker Assy (WorkForce 60 series)

Remove the USB Cover in the direction of the arrow. Be careful not to damage the hooks (x2), rib (x1) and screw boss (x1) then.

Tighten the screws in the order indicated in the figure above.

Main Board Unit (WorkForce 60 series)

When installing the Panel Unit, route the cable of the Stacker Open Sensor through the groove of the Upper Housing so as not to catch the cables in between.

Follow the procedure below when removing the Stacker Assy.

1. Release the hooks (x2) that secure the Stacker Lock, and lift the Stacker Lock in the direction of the arrow.

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 27

2. Remove the Stacker Lock from the shaft on the left of the Stacker Assy.

3. Remove the shaft on the right of the Stacker Assy from the bearing of the Frame Base, and remove the Stacker Assy from the Frame Base.

Do not damage or contaminate the MAC Address Label.

 Align the rib (x1) and positioning hole (x1) of the PF Encoder Cover with the cutout (x1) and dowel (x1) of the Frame Base.  Tighten the screws in the order indicated in the figure above.  When replacing the Main Board, it is necessary to set the MAC address if the EEPROM data cannot be read out from the old Main Board. In such

a case, refer to "2.2.3MAC Address Setting (p42)" and set it.

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Epson WorkForce 635/620/60 series Revision C

Double-sided tape

Scanner FFC

Ferrite core

C.B.P-TITE SCREW,3X10,F/ZN-3C (6 ± 1 kgf·cm)

FAX Assy

Grounding

wire

CN24 CN19

CN2

CN18

CN22

CN17

Main Board

Scanner FFC

Route FFC through hole

with its stiffener outward.

Rear

Front

Panel FFC

Groove

Rib

Hole

Panel FFC

Panel Unit

Cover Open Sensor

Cover Open Sensor cable

Groove of Upper Housing

Scanner Motor cable

Dowel Groove

Scanner FFC

Double-sided tape

Screw boss

P/S Board Assy cable

Ferrite core

P/S Board Assy cable

Section A

P/S Board Assy

CR Motor cable

2 mm or less

Main Frame

Hook Rib

CR Motor cable

CR Motor

Groove of PF Encoder Cover

Ferrite core

Back of PF Encoder Cover

FAX FFC

CN3

PF Encoder Cover

FAX Assy

Main Board

1.4 Routing FFCs/cables

Inside the USB Cover (WorkForce 635 series)

When routing the FFCs/cables inside the USB Cover, connect them to the Main Board as shown above.

• ADF PE Sensor cable (CN18) • ADF Encoder cable (CN19)

• ADF Document Sensor cable (CN22) • ADF Motor cable (CN24)

• Scanner Motor cable (CN2)

• Scanner FFC (CN17): Secure the ferrite core to the Upper Housing with double-sided tape.

• Grounding wire: Secure to the FAX Assy with screw.

Panel Unit (WorkForce 635 series)

When routing the Panel FFC, be careful of the following.  Route it through the rib, groove and hole of the Upper Housing as shown

above.

 Facing the FFC stiffener outward, route it through the hole of the Upper

Housing.

Cover Open Sensor (WorkForce 635/620 series)

Route the Cover Open Sensor cable through the groove of the Upper Housing.

Scanner FFC/Scanner Motor Cable

P/S Board Assy (WorkForce 635/620 series)

CR Motor

FAX Assy (WorkForce 635 series)

(WorkForce 635/620 series)

 When routing the Scanner FFC, secure it to the housing with double-sided

tape (x3).

 When routing the Scanner Motor cable, route it through the dowels (x2)

and groove of the housing.

Disassembly/Reassembly Routing FFCs/cables 28

When routing the P/S Board Assy cable, make sure of the following.

 Insert the ferrite core into the section A of the Frame Base.  Route the P/S Board Assy cable between the screw boss and P/S Board

Assy in order to prevent the cable from getting caught.

 When routing the CR Motor cable, route it through the hooks (x7) and ribs

(x2) as shown above.

 Make sure the gap between the CR Motor cable and the Main Frame is

less than 2 mm.

When routing the FAX FFC, insert the ferrite core into the groove of the PF Encoder Cover, and connect the FFC to the Main Board.

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Epson WorkForce 635/620/60 series Revision C

Head FFC

Carriage

To CR Encoder

To Holder Board Assy

Rib

Front Frame

Head FFC

Rib

Ferrite core

Head FFC

Double-sided tape

Head FFC

CN11 CN12

CN13

Bottom of Main Board Unit

Rib

PF Motor cable

CN7CN6

CN15

CN501

CN3

FAX FFC

CN14

Cutout of PF

Encoder Cover

PF Encoder FFC

CR Motor cable

P/S Board Assy cable

PF Motor cableCR Motor cable

PF Encoder FFC

PF Encoder Cover

Rib

Main Board

Bottom of Paper Guide Front Assy

Hook A

PF Motor cable

PF Motor

Hook

PE Sensor cable

PE Sensor

Hole

Boss Hook Rib A Rib B

Route FFC through hole

with its terminal outward.

Rib Groove Hole

Rear

Front

Panel FFC

Panel Unit

Head FFC

 When you do not need to replace the Head FFC, be careful not to disconnect it from the CR encoder connector. Once it is disconnected, you must

disassemble the carriage to reconnect it to the CR encoder.

 Confirm that the Head FFC is connected to the CR Contact Module and CR Encoder.  Route the Head FFC through the ribs (x3) of the Carriage.  Route the Head FFC through the ribs (x4) of the Front Frame.

Main Board (WorkForce 635 series)

When connecting the following cables to the Main Board, connect them as shown above.  Head FFC (CN11, CN12, CN13): Secure the ferrite core to the Main Board with double-sided tape, and connect it confirming the direction of the

terminals is correct.

 PF Motor cable (CN7): Route it through the ribs (x4) of the Frame Base, and connect it to the connector on the Main Board.  CR Motor cable (CN6): Route it through the cutout of the PF Encoder Cover, and connect it to the connector on the Main Board. See "CR

Motor (p28)" for routing it on the other sections.

 PE Sensor cable (CN15): Route it through the cutout of the PF Encoder Cover, and connect it to the connector on the Main Board. See "PE

Sensor (p29)" for routing it on the other sections.

 PF Encoder FFC (CN14): See "PF Encoder Sensor (WorkForce 635/620 series) (p29)".  FAX FFC (CN3): See "FAX Assy (WorkForce 635 series) (p28)".  P/S Board Assy cable (CN501): See "P/S Board Assy (WorkForce 635/620 series) (p28)".

PF Encoder Sensor (WorkForce 635/620 series)

Route the PF Encoder FFC through the ribs of the PF Encoder Cover, and connect it to the Main Board.

Route the PF Motor cable through the hooks (x2) of the Paper Guide Front Assy. Make one turn in the direction of the arrow around the hook A.

PF Motor

PE Sensor

 Route the PE Sensor cable through the hole of the Frame Base, and route

it through the bosses (x2), hook (x1), and rib A (x1).

 When routing the PE Sensor cable, keep it below the rib B.

Panel Unit (WorkForce 620 series)

When routing the Panel FFC, be careful of the following.  Route it through the rib, groove and hole of the Upper Housing as shown

above.

 Facing the FFC terminal outward, route it through the hole of the Upper

Housing.

Disassembly/Reassembly Routing FFCs/cables 29

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Epson WorkForce 635/620/60 series Revision C

Double-sided tape

Scanner FFC

Ferrite core

CN8

Main Board

CN17

Scanner FFC

Scanner Motor cable

Ferrite core

Head FFC

Double-sided tape

Head FFC

CN11 CN12

CN13

Bottom of Main Board Unit

PF Motor cable

Rib

CN15

CN7

CN6

CN501

CN14

PF Encoder FFC

CR Motor Cable

PE Sensor cable

PF Motor cable

P/S Board Assy cable

Cutout of PF

Encoder Cover

Rib

PF Encoder Cover

PF Encoder FFC

CR Motor Cable

PE Sensor cable

PF Motor cable

Ferrite core of P/S

Board Assy cable

Bottom of Main Board Unit

Panel FFCCN5

CN7 CN6

CN501

CN15

CN14

Double-sided tape

Ferrite core of Head FFC

CN11

CN12

Head FFC

CN13

Inside the USB Cover (WorkForce 620 series)

When routing the FFCs/cables inside the USB Cover, connect them to the Main Board as shown above.

• Scanner Motor cable (CN8)

• Scanner FFC (CN17): Secure the ferrite core to the Upper Housing with double-sided tape.

Main Board (WorkForce 620 series)

terminals is correct.

Motor (p28)" for routing it on the other sections.

 PE Sensor cable (CN15): Route it through the cutout of the PF Encoder Cover, and connect it to the connector on the Main Board. See "PE

Sensor (p29)" for routing it on the other sections.

 PF Encoder FFC (CN14): See "PF Encoder Sensor (WorkForce 635/620 series) (p29)".  P/S Board Assy cable (CN501): See "P/S Board Assy (WorkForce 635/620 series) (p28)".

Main Board (WorkForce 60 series)

When connecting the following cables to the Main Board, connect them as shown above.

 Head FFC (CN11, CN12, CN13): Secure the ferrite core to the Main Board with double-sided tape, and connect it confirming the direction of the

 Panel FFC (CN5): Connect it to the Main Board confirming the direction of the terminals is correct.  PF Motor cable (CN7): Route it as shown in the above, and connect it to the Main Board.  CR Motor Cable (CN6): Route it through the ribs (x2) of the PF Encoder Cover, and connect it to the connector on the Main Board. See "CR

 PE Sensor cable (CN15): Route it through the ribs (x2) of the PF Encoder Cover, and connect it to the connector on the Main Board. See "PE

 PF Encoder FFC (CN14): Route it through the ribs (x1) of the PF Encoder Cover, and connect it to the connector on the Main Board.  P/S Board Assy cable (CN501): Insert the ferrite core into the position shown above, and connect it to the connector on the Main Board.

Disassembly/Reassembly Routing FFCs/cables 30

terminals is correct.

Motor (p28)" for routing it on the other sections.

Sensor (p29)" for routing it on the other sections.

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CHAPTER 2

ADJUSTMENT

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Epson WorkForce 635/620/60 series Revision C

2.1 Required Adjustments

The table from the following page lists the required adjustments depending upon the parts being repaired or replaced. Find the part(s) you removed or replaced, and check which adjustment(s) must be carried out.

 If the EEPROM data cannot be read out from the old Main Board using the Adjustment

Program when replacing the Main Board is required, the Waste Ink Tray Assy must be replaced with the Main Board at the same time.

 After all required adjustments are completed, use the “Final check pattern print”

function to print all adjustment patterns for final check. If you find a problem with the printout patterns, carry out the adjustment again.

 When replacing the Main Board and the Printer Mechanism at the same time, the

adjustment should be made after performing the initial setting.

 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

 The table items and marks used in the “Required Adjustment List” provided on the

following pages have the following meanings.

• “O” indicates that the adjustment must be carried out.

• “---” indicates that the adjustment is not required.

• The “Mechanism Adjustment” should be performed just after reinstalling or

reassembling the part or unit.

• The “Adjustments using the Adjustment Program” need to be performed after

reassembling the printer completely.

 If you have removed or replaced multiple parts, make sure to check the required

adjustments for the all parts. And when multiple adjustments must be carried out, be sure to carry out them in the order given in the “Priority” row.

Adjustment Required Adjustments 32

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Epson WorkForce 635/620/60 series Revision C

OK NGNG

Table 2-1. Required Adjustment List

Adjustment Type Mechanism adjustment Adjustment using the Adjustment Program

Priority 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

PF Timing

Adjustment Item

Purpose

Duplex Unit

Cassette Assy

Waste Ink Tray Assy

Part Name

Main Board (Main Board Unit)

Remove Replace Remove Replace Remove Replace Remove Replace

(Read OK)

Replace (Read NG)

Belt tension

measurement/

PF belt step

Checking the

Platen Gap

EEPROM data copy

Initialize

Setting

MAC address

setting

Ink charge Head ID input

Maintenance

counter

PE Detector

confirmation

PF / EJ

adjustment

confirmation

Check if the tension of the PF Timing Belt is within the standard.

Check if the PG is within the standard.

To copy adjustment values or the like stored on the old Main Board to the new board when the Main Board needs to be replaced.

To write saledestinationspecific settings and the serial number into the Main Board after replacing it.

To set the MAC address (required for connecting to network) when the Main Board needs to be replaced.

To fill ink inside the new Printhead to make it ready for print after replacing the Printhead.

To correct characteristic variation of the replaced Printhead by entering its Printhead ID (Head ID).

To reset the waste ink counter after replacing the Waste Ink Pad.

Confirm the PE sensor's chattering after detecting the end of the paper falls within the specified period.

To correct variations in paper feed accuracy to achieve higher print quality.

--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---

--- --- --- --- --- --- --- --- --- O O --- --- O O --- --- --- ---

--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---

--- --- --- --- --- --- --- --- --- --- O --- --- --- O --- --- --- ---

--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---

--- --- --- --- --- --- --- O --- --- --- --- --- --- --- --- --- --- ---

--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---

--- --- O --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---

--- --- --- O O --- O *1 --- O O O O O O O

First dot

position / PW

adjustment

To correct the print start position in the carriage moving direction through software control.

Bi-D

adjustment

To correct print start timing in bidirectional printing through software control.

Head angular

adjustment

To correct tilt of the Printhead caused at the installation through software control.

PF band

adjustment

To correct variations in paper feed accuracy to achieve higher print quality in band printing.

adjustment

To correct paper detection position error caused by PE sensor mounting position error through software control.

Paper Skew

adjustment

To align print start position at 0-digit side with that at 80-digit side in banding bi-directional printing, timing of firing ink droplet is adjusted through software control.

PF / EJ

deterioration

offset

To reset the counter or set it to its maximum according to the replaced parts.

Input max. value

(10000)

CR motor heat

protection

control

To measure and correct the electrical variation of the motor and the power supply board.

O O

PF motor heat

protection

control

To measure and correct the electrical variation of the motor and the power supply board.

Printout pattern

How to judge

Adjustment program Tool

--- --- --- --- --- --- --- --- --- --- --- --- ---

The Adjustment Program is needed partly in this adjustment. See ? 2.2.1 PF

Timing Belt Tension Measurement/ PF Belt Step Check (p38)?

for the details.

See ? 2.2.2

Checking the Platen Gap (p41)? for the

details.

--- ---

See ? 2.2.3

MAC Address Setting (p42)?

for the details.

Examine the printout patterns and enter the value for the pattern with no overlap and gap between the two rectangles.

--- --- --- ---

-2 -1 0 1 2

-2

-1

-2 -1 0 1 2

-2

-1

0 1 2

PW

Adjustment

Examine the misaligned lines printed on top, bottom, left, and right of the paper, and enter the number beside the line that is exactly 5 mm away from the paper edge for each side.

1st dot

adjustment

Examine the printout patterns for each of the four modes, and enter the value for the pattern with no gap and overlap for each mode.

NGOK



Band pattern

Enter the values of the most straight lines.

Microweave

pattern

Enter the value for the group of which the gaps between the 2 color bars are the smallest.

Examine the printout patterns and enter the value for the pattern with no overlap and gap between the two rectangles.

---

OK NGNG

Examine the printout pattern and enter the number of the one with the least gap and overlap between the two different colored lines.

--- --- ---

Examine the lines on the left side of paper, and enter the number beside the line that overlaps with the horizontal line.

O O O O O O O O O O O O O O O O O O O

See p38 See p41 --- --- --- --- --- --- --- --- Ruler --- --- --- --- --- --- --- ---

Note "*1": Replacement of the Waste Ink Tray Assy is necessary. Note "*2": When you have just removed and reinstalled the part or unit, you are required to make the adjustments checked in the “Remove” row. However, if you have reinstalled the part or unit without using Epson-specified tools, the adjustments checked in the “Replace” row must be performed.

Adjustment Required Adjustments 33

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Epson WorkForce 635/620/60 series Revision C

OK NGNG

Table 2-1. Required Adjustment List

Adjustment Type Mechanism adjustment Adjustment using the Adjustment Program

Priority 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

PF Timing

Adjustment Item

Purpose

Main Frame (w/ CR Assy)

Upper Paper Guide

PE Holder