Epson WF-R8590, WF-R8591, WF-R8593 Service Manual

SERVICE MANUAL

RevisionE Color Ink jet Printer

EPSON WF-R8590

EPSON WF-R8591
EPSON WF-R8593

CONFIDENTIAL

SEMF14-006

Notice:

 All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or

by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of
SEIKO EPSON CORPORATION.

 All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be

detected, SEIKO EPSON would greatly appreciate being informed of them.

 The contents of this manual are subject to change without notice.
 The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this

manual or the consequences thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

Note :Other product names used herein are for identification purpose only and may be trademarks or registered

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

Copyright © 2016 SEIKO EPSON CORPORATION

Printer CS Quality Assurance Department

Confidential

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, for 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 print head


 CR Scale
 PF Scale
 ASF 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 print head, pack the printer without removing the
ink pack in order to prevent the print head from drying out. In addition, make sure to secure the CR Unit with
tape before packing the printer "5.2 Protection for Transportation (p330)".

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. TROUBLESHOOTING

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

CHAPTER 2. 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 3. ADJUSTMENT

Describes the required adjustments for servicing the product.

CHAPTER 4. MAINTENANCE

Describes maintenance items and procedures for servicing the product.

CHAPTER 5. APPENDIX

Provides the following additional information for reference:

• Connector Diagram

• Protection for Transportation

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.

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Revision Status

Revision Date of Issue Description

A July 8th, 2014 First Release

B Jan.9h, 2015 Revise content

Chapter 1

1.1.1 Troubleshooting Workflow

1.2　Power-On Sequence

1.3 　Fatal Error Code List

Chapter 2

2.1.3 Standard Operation Time for servicing the product

2.3.5.4 Main Board

2.3.6.1 Print Head

2.3.6.16 Cap Unit

2.3.7.6 PF Tension Stopper

2.3.7.7 PF Tension Belt

2.3.7.8 PF Motor Assy

2.3.7.13 Sheet Guide

2.3.8.6 Ink Supply CL Assy

2.3.8.9 Tube

Chapter 3

3.2.1.1 PF Timing Belt Tension Measurement

3.2.1.3 ASF Timing Belt Tension Measurement

3.2.3 Ink Leak Check

3.2.3.2 Ink Lake Measurement jig 1

3.2.4 Head Angular Mecha Adjustment

3.2.5 SMAP Run out Adjustment

Chapter 4

4.3 Initialization of Password

C Jun 20,2015

Revise Content

Chapter 1

Fatal Error Code List (p18)

Chapter 2

Disassembly and Assembly Procedure (p59)

Chapter 3

3-3 Required Adjustment List (Adjustment using the Adjustment Program) (2/2) (p275)

Chapter 4

Firmware Update (p317)

Initialization of Password (p318)

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Revision Date of Issue Description

D Dec. 15.2015 Chapter 2

2.1.1 Tools (p.40)

2.1.1.1 Screw types used in the printer (p.41)

2.1.2 Standard Operation Time for servicing the product (p.42)

2.3.1.2 Ink flushing (p.61- p.62)

2.3.1.3 Initial Ink charge (p.62)

2.3.3.14 Front Housing (p.80)

2.3.5.3 Main Board Unit (p.99 - p.101)

2.3.5.8 Power Supply Unit (p.110 - p.111)

2.3.6.1 Print Head (p.113, p.114)

2.3.6.2 CR Waste Ink Pad (p.116)

2.3.6.3 CR Scale

How to install the CR Scale (p.119)

2.3.6.4 PW Sensor (p.120, p.120)

2.3.6.5 Head FFC p.121 - p.127)

2.3.6.7 Taking the ink tubes from the ink supply unit. (p.130 - p.130)

2.3.6.8 CR Unit (p.131, p.131 - p.133)

2.3.6.15 Ink Supply Unit (p.145, p.145 - p.148)

2.3.8.5 Ink Supply BK Assy (p.186)

2.3.8.6 Ink Supply CL Assy (p.188)

2.3.8.7 Ink Pack Holder (BK) (p.192)

2.3.8.8 Ink Pack Holder (Y/M/C) (p.193)

2.3.8.9 Ink Tube (p.194)

2.3.13 Mechanism Unit (p.260)

Chapter 5

5.2.2 Protection of the Ink Supply Needle (p.314)

E Apr. 4.2016 Copyright (p.2)

Chapter 1

Printer fatal error list 0x8A (p.22)
Chapter 2

2.3.1 Preparation for servicing (p.61)

2.3.2.1 Maintenance Box. (p.64)

Chapter 3

Table 3-1 Required Adjustment List (Mechanism adjustment) (p.280)

Table 3-2 Required Adjustment List (Adjustment using the Adjustment Program) (1/2) (p.281)

Table 3-3 Required Adjustment List (Adjustment using the Adjustment Program) (2/2) (p.282)

3.2.4 Head Angular Mecha Adjustment

1.Turn the printer on... (p.306)

12.Turn the printer on... (p.307)

3.2.6 Inspection Mode (p.316)

3.2.6.2 Printer Inspection Mode (p.317)

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Revision Date of Issue Description

F May 24, 2016 Revise the contents.

 Chapter 2

 Made change description of the disassembly/reassembly procedure in "2.3.6.1 Print

Head (p114)".

 Made change description of the disassembly/reassembly procedure in "2.3.6.15 Ink

Supply Unit (p148)".

 "2.3.6.19 Print Head / Ink Supply Unit (When the printer cannot perform Ink Flushing

by fatal error) (p168)" is added newly.

 Chapter 3

 Made change the description of Caution Box in "3.2.2.3 PG adjustment procedure

(p293)".

 New procedure is added, and changing the description in "3.2.3 Ink Leak Check

(p296)".

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EPSON WF-R8590 Revision F

Contents

Chapter 1 Troubleshooting

1.1 Troubleshooting....................................................................................................................................................... 14

1.1.1 Troubleshooting Workflow ............................................................................................................................ 14

1.2 Power-On Sequence ................................................................................................................................................ 17

1.3 Fatal Error Code List ............................................................................................................................................... 20

1.3.1 FAX Troubleshooting ..................................................................................................................................... 32

1.3.1.1 FAX Log ................................................................................................................................................ 32

1.3.1.2 Error Code/Superficial Phenomenon-Based Troubleshooting .............................................................. 37

Chapter 2 DISASSEMBLY/REASSEMBLY

2.1 Overview ................................................................................................................................................................. 40

2.1.1 Tools ............................................................................................................................................................... 40

2.1.1.1 Screw types used in the printer .............................................................................................................. 41

2.1.2 Standard Operation Time for servicing the product ....................................................................................... 42

2.2 Parts Diagram .......................................................................................................................................................... 45

2.3 Disassembly and Assembly Procedure.................................................................................................................... 61

2.3.1 Preparation for servicing ................................................................................................................................ 61

2.3.1.1

2.3.1.2 Ink flushing ............................................................................................................................................ 62

2.3.1.3 Initial Ink charge .................................................................................................................................... 63

2.3.2 Consumables/Accessories .............................................................................................................................. 64

2.3.2.1 Maintenance Box ................................................................................................................................... 64

2.3.3 Housing........................................................................................................................................................... 65

2.3.3.1 Front Cover Assy ................................................................................................................................... 65

2.3.3.2 Paper Support Support ........................................................................................................................... 66

2.3.3.3 Stacker Assy .......................................................................................................................................... 66

2.3.3.4 Rear ASF Document Support Cover ..................................................................................................... 67

2.3.3.5 Left ADF Hinge Cover .......................................................................................................................... 67

2.3.3.6 Right ADF Hinge Cover ........................................................................................................................ 68

2.3.3.7 Paper Support......................................................................................................................................... 69

2.3.3.8 Panel Assy.............................................................................................................................................. 70

2.3.3.9 Speaker................................................................................................................................................... 71

2.3.3.10 Front Cover Microswitch ..................................................................................................................... 72

2.3.3.11 Right Upper Front Cover ..................................................................................................................... 73

2.3.3.12 Panel Lower Front Cover..................................................................................................................... 73

2.3.3.13 Panel FFC ............................................................................................................................................ 74

2.3.3.14 Front Housing ...................................................................................................................................... 75

2.3.3.15 Middle Housing ................................................................................................................................... 86

2.3.4 Cover Sensors ................................................................................................................................................. 92

2.3.4.1 Rear Cover Microswitch........................................................................................................................ 92

2.3.4.2 Rear Cover PF Sensor ............................................................................................................................ 93

2.3.4.3 Right Pick Up Roller Sensor.................................................................................................................. 94

2.3.4.4 Left Pick Up Roller Sensor.................................................................................................................... 95

2.3.4.5 Casette Microswitch .............................................................................................................................. 95

2.3.4.6 PE Sensor ............................................................................................................................................... 96

2.3.5 Electric Circuit Components .......................................................................................................................... 97

2.3.5.1 USB/FAX Cover .................................................................................................................................... 97

2.3.5.2 USB Connector Assy ............................................................................................................................. 98

2.3.5.3 Main Board Unit .................................................................................................................................... 99

Unlocking the CR Unit ......................................................................................................................... 61

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EPSON WF-R8590 Revision F

2.3.5.4 Main Board .......................................................................................................................................... 107

2.3.5.5 Interface Board .................................................................................................................................... 108

2.3.5.6 Wireless LAN Module ......................................................................................................................... 109

2.3.5.7 CSIC Board (BK)................................................................................................................................. 110

2.3.5.8 Power Supply Unit ............................................................................................................................... 111

2.3.6 Carriage Mechanism/ Ink System Mechanism............................................................................................. 114

2.3.6.1 Print Head ............................................................................................................................................ 114

2.3.6.2 CR Waste Ink Pad ................................................................................................................................ 119

2.3.6.3 CR Scale .............................................................................................................................................. 120

2.3.6.4 PW Sensor............................................................................................................................................ 123

2.3.6.5 Head FFC ............................................................................................................................................. 124

2.3.6.6 CR Motor ............................................................................................................................................. 131

2.3.6.7 Taking the ink tubes from the ink supply unit. ...................................... ... ... ... .... ... ... ... ... .... .. 133

2.3.6.8 CR Unit ................................................................................................................................................ 134

2.3.6.9 Decompression Motor Assy................................................................................................................. 141

2.3.6.10 APG Gear Assy.................................................................................................................................. 142

2.3.6.11 APG Sensor........................................................................................................................................ 143

2.3.6.12 APG Motor Assy ............................................................................................................................... 144

2.3.6.13 CR Solenoid Assy .............................................................................................................................. 146

2.3.6.14 Ink End Board .................................................................................................................................... 147

2.3.6.15 Ink Supply Unit.................................................................................................................................. 148

2.3.6.16 Cap Unit ............................................................................................................................................. 157

2.3.6.17 Pump Unit .......................................................................................................................................... 164

2.3.6.18 Waste Ink Joint Tube Assy ................................................................................................................ 166

2.3.6.19 Print Head / Ink Supply Unit
(When the printer cannot perform Ink Flushing by

fatal error) ......................................................................................................................................................... 168

2.3.7 Paper Feed Mechanism................................................................................................................................. 174

2.3.7.1 Rear Cover Assy/Rear Cover Belt ....................................................................................................... 174

2.3.7.2 Rear Cover Control Lever.................................................................................................................... 174

2.3.7.3 Duplex Unit.......................................................................................................................................... 175

2.3.7.4 PF Encoder Sensor Assy ...................................................................................................................... 175

2.3.7.5 Pick Up Roller Motor Assy ................................................................................................................. 176

2.3.7.6 PF Tension Stopper.............................................................................................................................. 178

2.3.7.7 PF Timing Belt..................................................................................................................................... 179

2.3.7.8 PF Motor Assy ..................................................................................................................................... 181

2.3.7.9 PE Sensor ............................................................................................................................................. 182

2.3.7.10 PF Sensor ........................................................................................................................................... 186

2.3.7.11 Star Wheel Assy................................................................................................................................. 187

2.3.7.12 Rear ASF Unit ................................................................................................................................... 188

2.3.7.13 Sheet Guide ........................................................................................................................................ 190

2.3.7.14 Rear ASF Solenoid Assy ................................................................................................................... 191

2.3.7.15 Rear ASF Solenoid Gear Assy........................................................................................................... 192

2.3.7.16 Rear ASF PE Sensor .......................................................................................................................... 193

2.3.8 Ink Supply Mechanism......................................................................................................

2.3.8.1 Ink Supply BK Cover Assy ................................................................................................................. 195

2.3.8.2 Ink Supply CL Cover Assy ................................................................................................................. 197

2.3.8.3 Ink Supply BK Cover Open Sensor..................................................................................................... 199

2.3.8.4 Ink Supply CL Cover Open Sensor ..................................................................................................... 200

2.3.8.5 Ink Supply BK Assy ............................................................................................................................ 201

2.3.8.6 Ink Supply CL Assy............................................................................................................................. 203

2.3.8.7 Ink Pack Holder (BK) .......................................................................................................................... 207

2.3.8.8 Ink Pack Holder (Y/M/C) .................................................................................................................... 208

2.3.8.9 Tube ..................................................................................................................................................... 209

2.3.8.10 CSIC FFC .......................................................................................................................................... 211

2.3.8.11 Relay FFC (BK) ................................................................................................................................. 213

2.3.8.12 Relay FFC (CL) ................................................................................................................................. 214

2.3.9 ADF/ Scanner Unit ....................................................................................................................................... 216

2.3.9.1 ADF/ Scanner Unit .............................................................................................................................. 216

2.3.9.2 ADF Unit ............................................................................................................................................. 218

........................... 195

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EPSON WF-R8590 Revision F

2.3.9.3 ADF Cover Assy.................................................................................................................................. 221

2.3.9.4 Rear ADF Cover/ Rear Sub ADF Cover ............................................................................................. 222

2.3.9.5 Front Sub ADF Cover/ Front Main ADF Cover .................................................................................. 223

2.3.9.6 Document Cover Mat Assy.................................................................................................................. 225

2.3.9.7 ADF Pad Assy ..................................................................................................................................... 225

2.3.9.8 ADF Cover Microswitch ..................................................................................................................... 226

2.3.9.9 ADF PF Encoder Sensor ...................................................................................................................... 227

2.3.9.10 ADF LD Assy .................................................................................................................................... 229

2.3.9.11 ADF PF Support Guide...................................................................................................................... 231

2.3.9.12 ADF Side Cover/ ADF Paper End Side Cover .................................................................................. 232

2.3.9.13 ADF PE Sensor A .............................................................................................................................. 233

2.3.9.14 ADF PW Sensor A............................................................................................................................. 235

2.3.9.15 ADF PW Sensor B ............................................................................................................................. 236

2.3.9.16 ADF Document Detection Sensor A ................................................................................................. 237

2.3.9.17 ADF Document Detection Sensor B.................................................................................................. 238

2.3.9.18 Right ADF Hinge ............................................................................................................................... 239

2.3.9.19 Left ADF Hinge ................................................................................................................................. 240

2.3.9.20 Top ADF Document Support Assy.................................................................................................... 241

2.3.9.21 Bottom ADF Document Support ....................................................................................................... 243

2.3.10 Cassette ....................................................................................................................................................... 244

2.3.10.1 Casette Assy....................................................................................................................................... 244

2.3.10.2 Casette End Guide ............................................................................................................................. 244

2.3.11 2nd Cassette................................................................................................................................................ 245

2.3.11.1 2nd Cassette Unit ............................................................................................................................... 245

2.3.11.2 2nd Cassette Assy .............................................................................................................................. 247

2.3.11.3 2nd Cassette Frame Assy................................................................................................................... 247

2.3.11.4 2nd Cassette Drive Assy .................................................................................................................... 251

2.3.11.5 Actuator ............................................................................................................................................. 253

2.3.11.6 Sensor................................................................................................................................................. 254

2.3.11.7 Feed Roller......................................................................................................................................... 256

2.3.12 Option Cassette ........................................................................................................................................... 257

2.3.12.1 OP Casette Unit ................................................................................................................................. 257

2.3.12.2 OP Cassette Assy ............................................................................................................................... 258

2.3.12.3 OP Casette Retard Roller Assy.......................................................................................................... 258

2.3.12.4 OP Cassette End Guide...................................................................................................................... 259

2.3.12.5 OP Cassette Edge Guide Right .......................................................................................................... 259

2.3.12.6 OP Rear Cover Assy .......................................................................................................................... 261

2.3.12.7 Stopper Belt ....................................................................................................................................... 261

2.3.12.8 OP Right Cover.................................................................................................................................. 262

2.3.12.9 OP Left Cover.................................................................................................................................... 262

2.3.12.10 OP Rear Frame Assy........................................................................................................................ 263

2.3.12.11 OP Cassette Drive Assy................................................................................................................... 266

2.3.12.12 OP Rear Cover Open Microswitch .................................................................................................. 268

2.3.12.13 OP Rear Frame Cover Assy............................................................................................................. 268

2.3.12.14 OP Cassette Microswitch................................................................................................................. 271

2.3.12.15 OP Cassette PF Sensor..................................................................................................................... 272

2.3.12.16 OP Cassette Paper Sensor ................................................................................................................ 273

2.3.12.17 OP Cassette Hopper Sensor ............................................................................................................. 274

2.3.13 Mechanism Unit ......................................................................................................................................... 275

2.4 Routing the cables and FFC .................................................................................................................................. 277

2.4.1 Around the Main Board................................................................................................................................ 277

Chapter 3 Adjustment

3.1 Required Adjustments ........................................................................................................................................... 279

3.2 Details of Adjustments .......................................................................................................................................... 283

3.2.1 PF/CR/ASF Timing Belt Tension Measurement .......................................................................................... 283

3.2.1.1 PF Timing Belt Tension Measurement ................................................................................................ 284

3.2.1.2 CR Timing Belt Tension Check........................................................................................................... 286

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EPSON WF-R8590 Revision F

3.2.1.3 ASF Timing Belt Tension Measurement ............................................................................................. 287

3.2.2 PG Adjustment ............................................................................................................................................. 289

3.2.2.1 PG Adjustment procedure.................................................................................................................... 289

3.2.2.2 Preparation ........................................................................................................................................... 290

3.2.2.3 PG adjustment procedure ..................................................................................................................... 293

3.2.2.4 Checking the Platen Gap...................................................................................................................... 295

3.2.3 Ink Leak Check............................................................................................................................................. 296

3.2.3.1 Method of using the Leakage Check PET Chip. ................................................................................. 296

3.2.3.2 Method of using the Ink Leak Measurement jig.................................................................................. 298

3.2.4 Head Angular Mecha Adjustment ................................................................................................................ 306

3.2.5 SMAP Run out Adjustment .......................................................................................................................... 309

3.2.6 Inspection Mode ........................................................................................................................................... 316

3.2.6.1 To enter Inspection Mode................................................................................................... 316

3.2.6.2 Printer Inspection Mode....................................................................................................... 317

3.2.6.3 Touch Panel Adjustment...................................................................................................................... 318

3.2.6.4 To exit the Inspection Mode: ............................................................................................................... 321

Chapter 4 Maintenance

4.1 Overview ............................................................................................................................................................... 323

4.1.1 Cleaning ........................................................................................................................................................ 323

4.1.2 Lubrication.................................................................................................................................................... 323

4.2 Lubrication Points and Instructions....................................................................................................................... 324

4.3 Firmware Update ................................................................................................................................................... 326

4.4 Initialization of Password...................................................................................................................................... 327

Chapter 5 Appendix

5.1 Revision FConnector Diagram.............................................................................................................................. 329

5.2 Protection for Transportation ................................................................................................................................ 330

5.2.1 Securing the CR Unit.................................................................................................................................... 330

5.2.2 Protection of the Ink Supply Needle............................................................................................................. 331

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CHAPTER 1

TROUBLESHOOTING

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EPSON WF-R8590/WF-R8591/WF-R8593

ADF failure?

Finish

*

Turn on the printer

2

What is returned reason?

Copy an image

Copy an image by ADF

Start

ADF/Scanner

unit failure

Printer failure only

Yes

Yes

Yes

No

Does printer turn on the

power?

Yes

Is Power-on sequence

finished without error?

Yes

No

Is ADF operation finished

without trouble?

Standby condition

Is scanning operation

finished without

trouble?

1

No

Print check pattern

Is printing operation

finished without trouble?

Yes

Yes

Is printing operation

finished without error?

4

No

3

No

5

No

6

No

*: In case of “Not Trouble Found”, check fatal error code.

(p15)

(p15)

(p15)

(p16)

(p16)

(p16)

1.1 Troubleshooting

This section describes the troubleshooting workflow.

1.1.1 Troubleshooting Workflow

The following page describes the troubleshooting workflow. Follow the flow when troubleshooting problems.

 This flowchart is compiled based on the following contents.

• Our experience regarding the quality problem.

• Printer Mechanism specification for WF-R8590,WF-R8591 and WF-R8593.

 When FAX related error occurs, see " 1.3.1 FAX Troubleshooting (p32)".

Revision F

Troubleshooting Troubleshooting 14

Figure 1-1. Troubleshooting Workflow (1)

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

The power-on

1

sequence does not
start (p14)

No Power

[Presumable Cause]

• AC cable is unplugged.

• Power shuts down due to
scanner error.

• Power Supply Unit damage

• Main Board damage

• Detection failure of PW Sensor
occurred at power-on.

[Major Troubleshooting]

• Plug AC cable.

• Connect scanner harness.

• Power Supply Unit
replacement

• Main Board replacement

*

*: If the printer can turn on but turns off right away,

the protection circuit may cut off the power due to
an error such as a circuit failure.

Error is indicated during printing nozzle check pattern (p14)

3

LEDs on panel are flashing

[Presumable Cause]

• Wi-Fi connector is unplugged

• Wi-Fi Board damage

[Major Troubleshooting]

• Plug Wi-Fi connector

• Wi-Fi Board replacement

Error is indicated during

2

power-on sequence (p14)

Fatal error

Please refer to

List (p20)"

" 1.3 Fatal Error Code

for troubleshooting.

CR Fixing Tape error

[Occurrence Condition]

This error occurs if a paper jam
occurs during the power-on
sequence before initial ink charge.

[Major Occurrence Timing]

Power-on timing
(before initial ink charge)

[Major Troubleshooting]

Open the front cover and remove
the CR fixing tape.

Maintenance error

[Occurrence Condition]

This error occurs when
maintenance counter in EEPROM
exceeds the specified value.

[Major Occurrence Timing]

• Power-on timing

• Print start timing

• Paper eject timing

• Cleaning timing

• Ink pack replacement timing

[Major Troubleshooting]

• Replace Maintenance Box

No Maintenance Box error

[Occurrence Condition]

This error occurs when
Maintenance Box is not installed.

[Major Occurrence Timing]

• At power-on

• Maintenance Box monitoring
timing

[Major Troubleshooting]

• Turn the printer off once and
install Maintenance Box again,
and turn the power on.

Maintenance Box detection

[Occurrence Condition]

This error occurs when
Maintenance Box data is incorrect
or it is not recognized correctly.

[Major Occurrence Timing]

• Power-on timing

• Maintenance Box replacement

• Maintenance Box monitoring

[Major Troubleshooting]

• Remove and reinstall

• Maintenance Box replacement

• Relay Board CSIC Terminal

• Relay Board Assy replacement

• Relay Board FFC replacement

• Main Board replacement

error

timing

timing

Maintenance Box

replacement

Ink End error

[Occurrence Condition]

This error occurs when ink in Ink
pack is empty.

[Major Occurrence Timing]

• Power-on timing

• Print start timing

• Print timing

• Cleaning timing

• Ink pack replacement timing

[Major Troubleshooting]

Ink pack replacement

[NOTE]

If an error occurs during
printing, the page where the error
occurred is skipped and the
printing resumes from the next
page.

Ink pack detection error

[Occurrence Condition]

This error occurs when Ink pack
data is incorrect or Ink pack is not
recognized correctly.

[Major Occurrence Timing]

• Power-on timing

• Print start timing

• Cleaning timing

• Ink pack replacement timing

[Major Troubleshooting]

• Remove and reinstall Ink pack.

• Ink pack replacement

• CSIC Terminal replacement

• CSIC FFC replacement

• CR Contact Module
replacement

• Main Board replacement

No Ink pack error

[Occurrence Condition]

This error occurs when Ink pack
not installed.

[Major Occurrence Timing]

At power-on

[Major Troubleshooting]

Install Ink pack

Paper Jam error

Please refer to " Paper Jam error".

Cover open error

[Occurrence Condition]

This error occurs when Scanner
Unit (Printer Cover) is open.

[Major Occurrence Timing]

• At power-on

• During printing

[Major Troubleshooting]

• Close Scanner Unit (Printer
Cover) replacement

• Scanner Unit (Printer Cover)
replacement

• Cover Open Sensor
replacement

• Main Board replacement

Paper Jam error

[Occurrence Condition]

This error occurs when top/
bottom of paper is not detected by
PE Sensor or PW Sensor in the
specified steps of paper feeding
operation correctly.

[Major Occurrence Timing]

• Power-on timing

• Paper loading timing

• Paper eject timing

• Duplex print timing

[Major Troubleshooting]

1 Remove the jammed paper by

opening Printer Cover.
2 Push “Start” button.
3 If not resolved by 2), check the

following.

• Foreign material, bits of
paper

• Part come-off

• PE Lever

•PE Sensor

• Main Board

•PW Sensor

[NOTE]

* If an error occurs during
printing, the page where the error
occurred is skipped and the
printing resumes from the next
page.
* If an error occurs during duplex
printing, the following are
performed.

• If an error occurs during the
front face of duplex printing,
the page where the error
occurred and the next page
are skipped and the printing
resumes from the page after
the next.

• If an error occurs during the
back face of duplex printing,
the page where the error
occurred is skipped and the
printing resumes from the
next page.

No Paper error

[Occurrence Condition]

This error occurs when top of
paper is not detected by PE Sensor
in the specified steps of paper
loading operation correctly.

[Major Occurrence Timing]

Paper loading timing

[Major Troubleshooting]

1 Put paper in cassette and push

“START” button.

2 If a paper stops before reaching

PE Sensor, remove it and
check the paper condition.

3 A) If no damage on the paper, set

edge guide correctly after
putting paper in cassette and
push “PRINT” button again.
B) If damage on the paper, check
foreign materials / parts come­ off / parts transformation in
paper path.

4 If not resolved by 3-A) & 3-B),

check the following.

• Pickup Roller

• Duplex Unit

•PE Sensor

• Main Board

•PF Motor

• Casette Assy

Double Feed error

[Occurrence Condition]

This error occurs on the following
cases.

• A paper is ejected without
printing during paper loading
operation.

• Actual paper length is longer
than theoretical one.

[Major Occurrence Timing]

Paper loading timing

[Major Troubleshooting]

• PE Lever replacement

• PE Sensor replacement

• PW Sensor replacement

• Main Board replacement

No Paper Cassette error

[Occurrence Condition]

This error occurs if one of the
cassettes is not installed.

[Major Occurrence Timing]

Paper loading timing
(Front loading)

[Major Troubleshooting]

Install the Cassette Assy.

Paper Size Unmatch error

[Occurrence Condition]

This error occurs when actual
paper size is not matched to
theoretical one.

[Major Occurrence Timing]

• Duplex print timing

• FAX data print timing

[Major Troubleshooting]

1 Put correct sized paper in

cassette, and push “START”
button.

2 If not resolved by step 1),

check the following points.

• PE Lever

• PE Sensor

• PW Sensor

•Main Board

Manual Tray No Paper error

[Occurrence Condition]

When printing from Manual Tray
(MSF unit), this error occurs if
paper is not loaded at the time of
data transmission.

[Major Occurrence Timing]

Paper loading timing
(Rear loading)

[Major Troubleshooting]

• Put paper in the Manual Tray
(MSF unit).

• PE Sensor replacement

• PE Lever replacement

• Main Board replacement

Manual Feed Request error

[Occurrence Condition]

This error occurs if the printer
cannot receive the manual feed
request.

[Major Occurrence Timing]

Paper loading timing
(Rear loading)

[Major Troubleshooting]

• Send the print data.

• Main Board replacement

Excessive Manual Feed Error

[Occurrence Condition]

This error occurs when the PE
Sensor detects paper before
manual feed or when paper is
inserted too much.

[Major Occurrence Timing]

Print start timing (Rear loading)

[Major Troubleshooting]

• Eject paper with panel
operation, and load paper
again.

• Main Board replacement

• PE Sensor replacement

• PE Lever replacement

Insufficient Manual Feed

[Occurrence Condition]

This error occurs during manual
feed if the PE Sensor detects
paper but the paper is not fed by
auto loading.

[Major Occurrence Timing]

Print start timing (Rear loading)

[Major Troubleshooting]

Eject paper with panel operation,
and load paper again.

error

Figure 1-2. Troubleshooting Workflow (2)

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Problems related to print result or during printing (p14)

Poor Printing

[Phenomenon]

• Poor printing quality

• Ink stain on paper

• Dot missing

• Paper eject without printing

[Presumable Cause]

• Driver / Panel mis-setting

• Contamination of CR scale

• Contamination of Printhead
Cover

• Printhead damage

• Ink clogging of Printhead

• Contamination on Cap Unit /
Wiper of Ink system Assy

• Ink system Assy damage

• Narrow PG

• PE Lever damage

• PE Sensor damage

• PW Sensor damage

[Major Troubleshooting]

• Driver / Panel re-setting

• CR Scale replacement

• Printhead cover cleaning

• Printhead cleaning

• Ink pack replacement

• Printhead replacement

• Rubber cleaning of Cap Unit of
Ink system Assy

• Ink system Assy replacement

• PG readjustment

• Printer Mechanism
replacement

• PE Lever replacement

• PE Sensor replacement

• PW Sensor replacement

Poor Paper Loading

[Presumable Cause]

• Use of 3rd party media

• Edge guide mis-setting

• Foreign material

• Parts come-off

• Contamination of paper feed
roller (Duplex Unit)

• Cassette Assy damage

• Pickup Roller deterioration,
contamination

• Contamination of PF roller

[Major Troubleshooting]

• Recommendation of EPSON
media

• Edge guide re-setting

• Foreign material removal

• Parts re-installation

• Pick Up Assy replacement

• Cassette Assy replacement

• Printer Mechanism
replacement

• Rear ASF Unit replacement

Abnormal Noise

[Presumable Cause]

• Foreign material

• Insufficient grease

• Gear damage

• Stopper Holder Idle Roller is
installed in a wrong place.

[Major Troubleshooting]

• Foreign material removal

• Lubrication of grease

• Gear replacement

Scanning cannot
be performed

5 64

successfully (p14)

Scanner failure

[Presumable Cause]

• Contamination of Scanner
Glass

• Contamination of Document
Pad

• CIS Unit bonding failure

• CIS Unit damage

• Scanner Motor damage

[Major Troubleshooting]

• Scanner Glass cleaning

• Document Pad cleaning

• Document Pad replacement

• CIS Unit replacement

• Scanner Motor replacement

ADF does
not operate
normally

(p14)

ADF failure

[Phenomenon]

• No paper feed

• Double feed

• Paper jam

• Paper skew

[Presumable Cause]

• Wear of Pickup Roller

• Wear of ADF Pad Assy

• Gear damage

• ADF Motor damage

• Contamination of Scanner
Glass

• Foreign material

• Paper Sheet damage

• ADF Cover Assy damage

• Wear of EJ Roller

• ADF Sensors damage

[Major Troubleshooting]

• ADF Cover Assy replacement

• ADF Pad Assy replacement

• Scanner Glass cleaning

• Foreign material removal

• ADF Unit replacement

Figure 1-3. Troubleshooting Workflow (3)

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

The condition of the CR lock

Red: CR lock is set
White: CR lock is released
The above shows the CR lock is set.

Carriage movement

Right-pointing arrow: Moves to the 0-digit side
Left-pointing arrow: Moves to the 130-digit side
The figure shows the carriage is moving to the 0-digit side.

Digit number of CR

PF Roller

Carriage

The rotation direction of
the ASF Motor

Clockwise:

Paper is fed normally

Counterclockwise:

Paper is fed backward
The above shows clockwise
rotation.

The rotation direction of
the PF Motor

Clockwise:

Paper is fed normally
Counterclockwise:

Paper is fed backward
The above shows clockwise
rotation.

1.2 Power-On Sequence

This section describes the power-on sequences for this product. The preconditions are as follows.

The following explains how to use the simplified diagrams in Table 1-1 or Table 1-2. The
diagrams show the movement of each component as seen from the front of the printer.

Figure 1-4. Movement of Components

 Normal power-on sequence



No error occurred at the last power-on, and the power was turned off normally.

 Initial ink charge has finished and every pack has sufficient ink.
 No paper on the paper path.
 The Printhead is capped by the cap of the Ink System.
 CR Lock is engaged normally.
 This indicates the Simple Sequence.
 PG position is set to PG 1.
 Option Cassette Unit is not installed.

Table 1-1. Power-on Sequence

Operation

1. APG reset

1-1.If PG is other than 1, the APG Motor rotates to set PG to 1.*

2. Printhead initialization and fuse inspection

2-1.Initializes the Printhead, and checks the fuse on the printer control

circuit board.

*1

9

Movement of

Components

CR

Motor

rotation

PF

Motor

rotation

--- --- ---

--- --- ---

ASF

Motor

rotation

3. Seeking the home position

3-1.To identify the CR Unit position, the CR Motor rotates

counterclockwise and it confirms the CR Unit touches the Right Frame
slowly. It regards the point when the CR Unit touches the Right Frame
as the position specified steps away from the home position, and sets it
as the origin.

3-2.If it judges the CR Unit is in the home position, the PF Motor rotates

clockwise and resets the CR lock.

3-3.The PF Motor rotates counterclockwise and sets the CR lock.

CCW --- ---

--- CW ---

--- CCW ---

Power-On Sequence 17

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Table 1-1. Power-on Sequence

Operation

3-4.The CR Motor rotates clockwise and it confirms the CR Unit touches

the Left Frame.*

3-5.The CR Motor and PF Motor stop.

3-6.The CR Motor rotates clockwise, and the CR Unit moves to the home

position, then the CR lock is set.

3-7.The PF Motor rotates clockwise and releases the CR lock.

2

4. CR measurement

4-1.The CR Motor rotates counterclockwise, and the CR Unit moves to the

0-digit side.*

3

Movement of

Components

CR

Motor

rotation

CW --- ---

--- --- ---

CW CCW ---

--- CW ---

CCW --- ---

PF

Motor

rotation

ASF

Motor

rotation

4-2.The CR Motor rotates clockwise, and the CR Unit moves to the 130-

digit side. (Measurement drive)

5. Adjustment of CR acceleration delay

5-1.The CR Motor rotates and the CR Unit moves back and forth two

times.*

4

6. Measurement of synchronized drive timing correction

6-1.The PF Motor and ASF Motor rotate.

7. Low temperature operation sequence

7-1.The PF Motor rotates clockwise, and the CR lock is unlocked.

7-2.The CR Motor rotates and the CR Unit moves back and forth two

7-3.The PF Motor rotates counterclockwise and the CR lock is set.

times.*

4

*5

8. Setting the PF Roller origin

8-1.The PF Motor rotates clockwise.

*6

CW --- ---

CW/

CCW

---

--- ---

CW/

CCW

CCW

--- CW ---

CW/

CCW

--- ---

--- CCW ---

--- CW ---

CW/

9. Sucking supply

9-1.The Decompression Motor Assy 1 rotates in turn (decompresses =>

vents to atmosphere), and the diaphragm pump sucks ink from the ink
cartridges.*

9-2.The Decompression Motor Assy 2 rotates in turn (decompresses =>

vents to atmosphere), and the diaphragm pump sucks ink from the ink
cartridges.*

8

8

10.Ink detection

10-1.Checks the ink consumption counters and the status of ink cartridges.

Power-On Sequence 18

--- --- ---

--- --- ---

--- --- ---

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Table 1-1. Power-on Sequence

Operation

11.Checking for waste ink overflow

11-1.Checks the waste ink counter of the Maintenance Box if the waste ink

overflow is occurring.

12.CR lock setting

12-1.The CR Motor rotates clockwise and the CR Unit moves to the home

position.

12-2.The CR Motor rotates counterclockwise and the CR Unit moves to the

0-digit side.

12-3.The PF Motor rotates counterclockwise and the CR lock is set.

12-4.The CR Motor rotates clockwise and the CR Unit moves to the home

position.

Movement of

Components

CR

Motor

rotation

--- --- ---

CW --- ---

CCW --- ---

--- CCW ---

CW --- ---

PF

Motor

rotation

ASF

Motor

rotation

13.Set the Hopper up

13-1.The ASF Motor rotates clockwise and the Hopper is set up.

*7

--- --- CW

Note : On the premise on this table, PG does not change and the Rear ASF does not operate during the sequence.

Note "*1": If any trouble exists such as the fuse has blown, the fatal error occurs.

"*2": At this point, if the output value of the CR Motor is below the specified value, the paper jam error occurs.

"*3": If, at this point, the output value of the CR Motor is more than the specified value, the fatal error occurs.

"*4": The DC error may occur.

o

"*5": Executes when the detected temperature is under 5

"*6": If the phase of the PF Roller cannot be detected, the SMAP phase detection error occurs.

"*7": If the sensor cannot detect the Hopper, the cassette damage error occurs.

"*8": If the Front Cover is open, the front cover open error occurs.

"*9": If the sensor cannot detect the APG position, the APG error occurs.

C (41oF) by the thermistor on the Printhead.

 Power-on Sequence after Recovering from a Paper Jam Error

Table 1-2. Power-on Sequence after Recovering from a Paper Jam Error

CR

Motor

rotation

CW/

CCW

Operation

Executes No.1 on the power-on sequence (Table 1-1).

1. Detecting remaining paper

1-1.The CR Motor rotates and the CR Unit moves back and forth slowly

once.

Movement of

Components

PF

Motor

rotation

--- ---

ASF

Motor

rotation

1-2.The CR Motor rotates clockwise and the CR Unit moves to the 0-digit

side slowly. At this point, if the CR lock lever, APG lever, and Suction
Unit are on the way, it evacuates them.

1-3.The CR Motor rotates and the CR Unit moves back and forth slowly

once.*

1

CW --- ---

CW/

CCW

Note : On the premise on this table, PG does not change and the Rear ASF does not operate during the sequence.

Note *1: At this point, if the output value of the CR Motor is more than the specified value, the paper jam error occurs.

Power-On Sequence 19

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

1.3 Fatal Error Code List

This section describes the fatal error code and the possible cause for this product.

 Printer fatal error list

Table 1-3. Fatal Error List (Printer)

Error type

Printer

Error

code

0x60 HP (Home Potion) error

0x61 Deadlock Avoidance error

0x62 Impossible contact detection error

0x63

0x64 PW sensor failure error

0x65 PW sensor detected foreign object error

0x67 APG error

0x69 Option Cassette recovery mode error

0x6A SMAP phase detection error • Misalignment of eccentric correction phase

0x6B PF runaway error

0x6C Option Cassette Connected error • Four optional cassettes or more setting error

0x6D Option Cassette Connected error • Option cassette setting error

0x6E Option Cassette Connected error • Option cassette setting error

0x6F Option Cassette Connected error • Option cassette setting error

0x70 Opt1 ASF excess load error

0x71 Opt1 ASF excess speed error

0x72 Opt1 ASF PID reverse error

Contact error at ink replacement timing
(Power-off)

Error name Possible cause

•Paper jam

• Foreign object

• Deformation of the main frame

• Foreign object

• Lock the CR Unit.

• Deformation of the main frame

•Paper jam

• Foreign object

• PW sensor failure

• Deformation of the main frame

•Paper jam

• Foreign object

• Deformation of the main frame

• Defective initial operation

• Foreign object

• PW sensor failure

• Main board failure

• Power On Sequence error

•Paper jam

• Foreign object

• Deformation of the main frame

• APG motor failure

• APG encoder failure

• Main board failure

• Option cassette board failure

• Main board failure

• PF encoder failure

• Motor driver failure

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

Fatal Error Code List 20

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Table 1-3. Fatal Error List (Printer)

Error type

Printer

Error

code

0x73 Opt1 ASF PID lock error

0x74 Opt1 ASF load position reverse error

0x75 Opt1 ASF load position excess speed error

0x76 Opt1 ASF load position excess load error

0x77 Opt1 LFT PID excess load error

0x78 Opt1 LFT PID excess speed error

0x79 Opt1 LFT PID lock error

0x7A Opt1 LFT PID driving time error

0x7B Opt2 LFT PID driving time error

0x7C Opt3 LFT PID driving time error

0x7D Option Communication error • Main board failure (UART Parity error/ UART FIFO Overflow)

0x7E Emergency stop error • Emergency cover open error

0x7F Inspection mode error ---

0x80 Opt2 ASF PID excess load error

0x81 Opt2 ASF PID excess speed error

Error name Possible cause

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Protection material remains

• Opt1 LFT Motor Failure

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 LIFT driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt1 LFT Motor Failure

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 LIFT driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 ASF motor failure

• Opt1 LIFT driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt1 LIFT motor failure

• Opt1 LIFT driven mechanism overload (paper jam/foreign object)

• Opt2 LIFT motor failure

• Opt2 LIFT driven mechanism overload (paper jam/foreign object)

• Opt3 LIFT motor failure

• Opt3 LIFT driven mechanism overload (paper jam/foreign object)

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

Fatal Error Code List 21

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Table 1-3. Fatal Error List (Printer)

Error type

Printer

Error

code

0x82 Opt2 ASF PID reverse error

0x83 Opt2 ASF PID lock error

0x84 Opt2 ASF load position reverse error

0x85 Opt2 ASF load position excess load error

0x86 Opt2 ASF load position excess load error

0x87 Opt2 LFT PID excess load error

0x88 Opt2 LFT PID excess speed error

0x89 Opt2 LFT PID lock error

0x8A Ink Leak error

0x8C Opt Communication error

0x8D Factor Error other than printer driver

0x8E Driver mismatch error • An unsupported drive was used.

0x8F EEPROM verify error (by command) ---

0x93 PE sensor failure

0x94 PW sensor light value adjust error

Error name Possible cause

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Protection material remains

• Opt2 LIFT motor failure

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 LIFT driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt2 LIFT motor failure

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 LIFT driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt2 LIFT motor failure

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 LIFT driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Ink leak at the ink supply route

• Printhead failure

• Ink Supply Unit failure

• Communication connector (Drawer Connectors) failure

• Cable disconnection

• Main board failure

This error occurs if the printer becomes a fatal error status due to a
failure of parts other than the printer such as the scanner or ADF.

• PE sensor failure

• Main board failure

• PW sensor failure

• Main board failure

Fatal Error Code List 22

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Table 1-3. Fatal Error List (Printer)

Error type

Printer

Error

code

0x96 Decompress pump motor drive time error

0x97 Head drive circuit VBS over-voltage error

0x99 IES (Ink End Sensor) process check error • Main board failure

0x9A Circuit error (include blowout of a fuse)

0x9B Transistor temperature error • Main board failure

0x9C X-Hot detect error (pre printing)

0x9D X-Hot detect error (after flushing)

0x9E Head temperature error

0x9F No print inspection mode error ---

0xA0 Opt3 ASF PID excess load error

0xA1 Opt3 ASF PID excess speed error

0xA2 Opt3 ASF PID reverse error

0xA3 Opt3 ASF PID lock error

0xA4 Opt3 ASF load position reverse error

0xA5 Opt3 ASF load position excess speed error

0xA6 Opt3 ASF load position excess load error

Error name Possible cause

• Decompress motor failure

• Main board failure

• Head FFC failure

• Main board failure

• Main board failure

• Power board failure

• Printhead failure

• Printhead FFC failure

• Cooling of print head

• Print head failure

• Main board failure

• Cooling of print head

• Print head failure

• Main board failure

• Cooling of print head

• Print head failure

• Main board failure

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

Fatal Error Code List 23

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Table 1-3. Fatal Error List (Printer)

Error type

Printer

Error

code

0xA7 Opt3 LFT PID excess load error

0xA8 Opt3 LFT PID excess speed error

0xA9 Opt3 LFT PID lock error

0xAA Opt1 ASF PID driving time error

0xAB Opt2 ASF PID driving time error

0xAC Opt3 ASF PID driving time error

0xAD Opt1 ASF BS driving time error

0xAE Opt2 ASF BS driving time error

0xAF Opt3 ASF BS driving time error

0xB0

0xB1

0xB2

0xB3

0xB4

0xB5

0xB6 Opt Communication error

0xB7

Opt Communication error

(Parameter length abnormality)

Opt Communication error

(Sub function code abnormality)

Opt Communication error

(A lot of numbers of optional cassettes)

Opt Communication error

(Parameter abnormality)

Opt Communication error

(Time-out error)

Opt Communication error

(Function code abnormality)

Opt Communication error

(Number of row for optional cassette

Error name Possible cause

abnormality in power supply ON)

• Protection material remains

• Opt3 LFT Motor Failure

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 LIFT driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt3 LFT Motor Failure

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 LIFT driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt3 LFT Motor Failure

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 LIFT driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt1 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt1 ASF Motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt2 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt2 ASF motor failure

• Pickup Roller drive mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt3 ASF Encoder failure (contaminated/detached scale, Encoder
Board failure)

• Opt3 ASF motor failure

• Pickup Roller drive mechanism overload (paper jam/foreign object)

• Cable disconnection

• Opt1 ASF motor failure

• Opt1 ASF Drive Board failure

• Opt2 ASF motor failure

• Opt2 ASF Drive Board failure

• Opt3 ASF motor failure

• Opt3 ASF Drive Board failure

• Communication connector failure

• Main board failure

• Communication connector failure

• Main board failure

• Communication connector failure

• Main board failure

• Communication connector failure

• Main board failure

• Communication connector failure

• Main board failure

• Communication connector failure

• Main board failure

• Communication connector failure

• Main board failure

• Communication connector failure

• Main board failure

Fatal Error Code List 24

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Table 1-3. Fatal Error List (Printer)

Error type

Printer

Error

code

0xB9 Ink device error

0xBA Ink device error

0xC0 CRCM access error

0xC1 CRCM access error

0xC3 Ink device error

0xD1 ASF PID excess load error

0xD2 ASF PID excess speed error

0xD3 ASF PID reverse error

0xD4 ASF PID lock error

0xD5 LFT PID excess load error

0xD7 LFT PID lock error ---

0xD8 ASF load position reverse error

0xD9 ASF load position excess speed error

0xDA ASF load position excess load error

0xDB LFT PID driving time error

Error name Possible cause

• Ink cartridge failure

• CSIC Loose connection

• CSIC Terminal failure

• CR Contact Module failure

• Main board failure

• Ink cartridge failure

• CSIC Loose connection

• CSIC Terminal failure

• CR Contact Module failure

• Main board failure

• CSIC Loose connection

• CSIC Terminal failure

• CR Contact Module failure

• Main board failure

• CSIC Loose connection

• CSIC Terminal failure

• CR Contact Module failure

• Main board failure

• Ink cartridge failure

• CSIC Terminal failure

• CR Contact Module failure

• Main board failure

• ASF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ASF motor failure

• Pickup Roller drive mechanism overload (paper jam/foreign object)

• Cable disconnection

• ASF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Motor driver failure (Main board failure)

• ASF Encoder failure (contaminated/detached scale, Encoder Board
failure)

•Paper jam

• ASF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ASF motor failure

• Pickup Roller (2nd cassette) drive mechanism overload (paper jam /
foreign object)

• Cable disconnection

• LFT motor failure

• Cable disconnection

• ASF Encoder failure (contaminated/detached scale, Encoder Board
failure)

•Paper jam

• ASF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Motor driver failure (Main board failure)

• ASF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ASF motor failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• Cable disconnection

• Main board failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

Fatal Error Code List 25

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Table 1-3. Fatal Error List (Printer)

Error type

Printer

Error

code

0xDD LFT PID excess speed error

0xDE ASF PID driving time error • Main board failure

0xDF ASF load position driving time error • Main board failure

0xE1 CR PID excess load error

0xE2 CR PID excess speed error

0xE3 CR PID reverse error

0xE4 CR PID lock error

0xE5 CR PID speed fall error

0xE6 APG PID lock error

0xE7 APG PID excess load error

0xE8 CR load position reverse error

0xE9 CR load position excess speed error

0xEA CR load position excess load error

0xEB APG PID driving time error • Main board failure

Error name Possible cause

• Main board failure

• Pickup Roller driven mechanism overload (paper jam/foreign object)

• CR Encoder failure (contaminated/detached scale, Encoder Board
failure)

• CR motor failure

• Carriage overload error (paper jam, foreign object)

• Cable disconnection

• CR Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Motor driver failure (Main Board failure)

• Tooth skip of the CR Timing Belt

• Improper tension of the CR Timing Belt

• CR Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Tooth skip of the CR Timing Belt

• Improper tension of the CR Timing Belt

•Paper jam

• CR Encoder failure (contaminated/detached scale, Encoder Board
failure)

• CR motor failure

• Carriage overload error (paper jam, foreign object)

• Cable disconnection

• CR Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Motor Driver failure (Main Board failure)

• Tooth skip of the CR Timing Belt

• Improper tension of the CR Timing Belt

•Paper jam

• APG encoder failure (contaminated/detached scale, Encoder Board
failure)

• APG motor failure

• Cable disconnection

• APG encoder failure (contaminated/detached scale, Encoder Board
failure)

• APG motor failure

• Cable disconnection

• CR Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Tooth skip of the CR Timing Belt

• Improper tension of the CR Timing Belt

•Paper jam

• CR Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Motor driver failure (Main board failure)

• Tooth skip of the CR Timing Belt

• Improper tension of the CR Timing Belt

• CR Encoder failure (contaminated/detached scale, Encoder Board
failure)

• CR motor failure

• Carriage overload error (paper jam, foreign object)

• Cable disconnection

Fatal Error Code List 26

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Table 1-3. Fatal Error List (Printer)

Error type

Printer

Error

code

0xEC APG PID excess speed error

0xED APG PID reverse error

0xEE CR PID driving time error • Main board failure

0xEF CR load position driving time error • Main board failure

0xF1 PF PID excess load error

0xF2 PF PID excess speed error

0xF3 PF PID reverse error

0xF4 PF PID lock error

0xF8 PF load position reverse error

0xF9 PF load position excess speed error

0xFA PF load position excess load error

0xFE PF PID driving time error • Main board failure

0xFF PF load position driving time error • Main board failure

Error name Possible cause

• APG encoder failure (contaminated/detached scale, Encoder Board
failure)

• Motor driver failure (Main board failure)

• Main Board failure

• Motor Driver failure

• PF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• PF motor failure

• PF drive mechanism overload (paper jam, foreign object)

• Cable disconnection

• PF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Motor driver failure (Main Board failure)

• Tooth skip of the PF Timing Belt

• Improper tension of the PF Timing Belt

• PF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Tooth skip of the PF Timing Belt

• Improper tension of the PF Timing Belt

•Paper jam

• PF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• PF motor failure

• PF drive mechanism overload (paper jam, foreign object)

• Cable disconnection

• PF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Tooth skip of the PF Timing Belt

• Improper tension of the PF Timing Belt

• PF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Motor driver failure (Main board failure)

• Tooth skip of the PF Timing Belt

• Improper tension of the PF Timing Belt

• PF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• PF motor failure

• PF driver mechanism overload (paper jam/foreign object)

• Cable disconnection

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 ADF/Scanner fatal error list

Table 1-4. Fatal Error List (ADF/Scanner)

Error type Error code Error name

• ADF Encoder failure (contaminated/detached scale, Encoder Board

0x01 ADF PID excess speed error

0x02 ADF PID reverse error

0x03

0x04 ADF PID acceleration lock detection error

0x05 ADF PID excess load error

0x06 ADF PID driving time error • SCN Main board failure

0x09 ADF BS+ excess speed error

0x0A ADF BS+ reverse error

0x0B ADF BS+ lock error

0x0D ADF BS+ excess load error

0x0E ADF BS+ driving time error • SCN Main board failure

0x10 HP detection error

0x11 Contact detection distance exceeded error

0x12

ADF PID (Proportional Integral Derivative
Controller) lock error

Opposite side contact detection distance
exceeded error

failure)

• Motor driver failure (SCN Main board failure)

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Paper jam

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ADF motor failure

• Paper jam

• Cable disconnection

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ADF motor failure

• Paper jam

• Cable disconnection

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ADF motor failure

• Paper jam

• Cable disconnection

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Motor driver failure (SCN Main board failure)

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Paper jam

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ADF Motor failure

• ADF drive overload (paper jam, foreign object)

• Cable disconnection

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ADF motor failure

• ADF drive overload (paper jam, foreign object)

• Cable disconnection

• CIS Unit failure

• Scanner Housing failure

• SCN Main board failure

• CIS Unit failure

• Scanner Housing failure (Including wrong attachment of the origin mark)

• SCN Main Board failure

• Scanner FFC failure / Scanner FFC connection failure

• Scanner Motor failure / Scanner Motor connection failure

• CIS Unit failure

• Scanner housing failure (Including wrong attachment of the origin mark)

• SCN Main board failure

• Scanner FFC failure / Scanner FFC connection failure

• Scanner motor failure / Scanner motor connection failure

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Table 1-4. Fatal Error List (ADF/Scanner)

Error type Error code Error name

• CIS Unit failure

• Scanner Housing failure (Including wrong attachment of the origin mark)

0x13

0x14 Measurement failure error • Scanner drive mechanism was overloaded

0x20 LED light error

0x21 ALD PID excess speed error

0x22 ALD PID reverse error

0x23 ALD PID Lock error

0x24 ALD PID acceleration lock

0x25 ALD PID excess load error

0x26 ALD PID driving time error

0x30

0x31

0x36 Paper jam error

0x41 FB PID excess speed error

0x42 FB PID reverse error

0x43 FB PID lock error

0x44 FB PID acceleration lock

Opposite side wrong contact detection distance
error

Option error

MAIN-B connection error

MAIN-A connection error

• SCN Main board failure

• Scanner FFC failure

• Scanner FFC connection failure

• Scanner motor failure

• Scanner motor connection failure

• CIS Unit failure

• SCN Main board failure

•ALD motor failure

• Motor driver failure

• Cable disconnection

•ALD motor failure

• Motor driver failure

• Cable disconnection

•ALD motor failure

• Motor driver failure

• Cable disconnection

•ALD motor failure

• Motor driver failure

• Cable disconnection

•ALD motor failure

• Motor driver failure

• Cable disconnection

•ALD motor failure

• Motor driver failure

• Cable disconnection

• Main Board failure

• Connected error between the Main board and SCN Main Board

• SCN Main Board failure

• Main Board failure

• Scanner FFC connection failure

• Paper jam

• Foreign object

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Paper jam

• Motor driver failure (SCN Main board failure)

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Paper jam

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ADF motor failure

• ADF drive mechanism overload (assembling failure, lubrication failure)

• Cable disconnection

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ADF motor failure

• ADF drive mechanism overload (assembling failure, lubrication failure)

• Cable disconnection

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Table 1-4. Fatal Error List (ADF/Scanner)

Error type Error code Error name

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

0x45 FB PID excess load error

0x46 FB PID driving time error • SCN Main board failure

0x49 FB BS+ excess sped error

0x4A FB BS+ reverse error

0x4B FB BS+ lock error

0x4D FB BS+ excess load error

0x4E FB BS+ driving time error • SCN Main board failure

0x51 Automatic judgement fatal error 1 ---

0x52 Automatic judgement fatal error 2 ---

0x53 Automatic judgement fatal error 3 ---

0x54 Automatic judgement fatal error 4 ---

0x55 Automatic judgement fatal error 5 ---

• ADF motor failure

• ADF drive mechanism overload (assembling failure, lubrication failure)

• Cable disconnection

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Motor driver failure (SCN Main board failure)

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• Paper jam

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ADF Motor failure

• ADF drive mechanism overload (assembling failure, lubrication failure)

• Cable disconnection

• ADF Encoder failure (contaminated/detached scale, Encoder Board
failure)

• ADF motor failure

• ADF drive mechanism overload (assembling failure, lubrication failure)

• Cable disconnection

Table 1-5. Fatal Error List (μSD (PDL))

Error type Error code Error name

0x5F

Match error between Main ROM and μSD
ROM

Mismatch of firmware version of the main and μSD

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 Inspection mode error list

Table 1-6. Ins pe ction mode error list

Error name Error indication Remedy

Fatal error Fatal Error Code: 0xXX Refer to " Fatal Error Code List (p20) ".

Printer failure error Fatal Error Code: 0xXX Refer to" Fatal Error Code List (p20) ".

Paper jam error Paper Jam Error Remove the jammed paper, close the cover.

No paper error Paper Out Error Set the paper, close the cover.

No tray / cassette error Cassette Nothing Set the cassette.

Rear cover open error Rear Open Error Close the rear cover.

Opt cover open error Opt Cover Open Close the opt cassette cover.

Ink case open error Ink Cover Open Error Close the ink cover.

Cover open error Cover Open Error Close the cover.

Carriage outside error OutSide Carriage Lock the CR Unit.

No ink cartridge error Ink Out Error Replace the ink pack.

ink cartridge abnormal error Ink Out Error Replace the ink pack.

ink cartridge non-genuine error Ink Out Error Replace the ink pack.

Initial charge error Ink Out Error Replace the ink pack.

ink error Ink Out Error Replace the ink pack.

Ink end error Ink Out Error Replace the ink pack.

Print error Ink Out Error Replace the ink pack.

Maintenance box nothing error Maintenance Box Nothing Error Replace the maintenance box.

Maintenance box CSIC error Maintenance Box CSIC Error Replace the maintenance box.

Maintenance box full error Maintenance Box Full Error Replace the maintenance box.

Double feed error Paper Piled out Error Remove the jammed paper, close the cover.

Fax paper length mismatch error Other Error Set the specified paper.

Auto duplex paper length mismatch error Paper Size Error (Duplex)

Paper mismatch error (logical) Other Error

Duplex printing error Can’t Duplex Media

Roller Life End error Roller Life End Replace the roller.

Cassette failure error Cassette Break Replace the cassette.

Memory overflow error Other Error

Manual Feed command error Manual Feed Error

Driver mismatch error Other Error

Ink Leakage error

Ink leakage Error
Fatal Error 0x8A

Changes to the paper size of a possible duplex printing.

Changes to the kind of paper a possible dull ex printing.

Set the paper for the duplex printing.

Expand the memory

Changes to the paper

－

Replace Printhead

<Procedure>

1.Start the adjust program.

1-1. Ink leak error reset

1-2. Ink flushing.

2.Replace Printhead.

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Item Information

Communication start
date / time

Year/month/day/hour/minute

Communication type Sending/receiving/polling reception

Communication ID

Sending/polling reception:

• Destination name of speed dial (first 20 characters)

• Telephone number (last 20 characters)

• Destination fax ID (20 characters)

Receiving:

• Destination fax ID (20 characters)

Airtime Hour/minute/second

Communication pages 0 to 100

Communication result

Common:

Normal/cancel/error code

*

Sending/polling reception:

No dial tone detected/No fax signal detected/Busy tone detected

1.3.1 FAX Troubleshooting

1.3.1.1 FAX Log

When an error related to fax occurs, it is not only indicated on the LCD but also saved as a log file. The error
code is recorded in it, and according to this log, the contents of the error can be confirmed.

Table 1-7. FAX Log (1)

Log Name Description Save Destination

Latest log
(Last Transaction)

*1

The latest communication log of sending / polling reception Nonvolatile memory

The following information is stored.

Communication log
(Fax Log)

Note *: For error codes, see Table 1-9. Error Code List (p.33).

Power failure log
(Fax Log)

Note *1: The latest communication log for all destinations are printed in a list form when the sequential broadcast is executed.

*2: The power failure log when the sequential broadcast is being executed is not printed for the destinations to which the

*2

Cancellation is treated as a normal termination, therefore, if it is cancelled, the latest log is printed when the auto print setting is
“always print”, and not printed when the setting is “only when an error occurs”. If “only when an error occurs” is selected, the
log is printed even when an error occurs for just one destination.

transmission log is already complete then. If the power failure occurs before the scheduled sending time when a broadcast is
scheduled, the scheduled sending time is recorded.

The information stored in this log is the same as the communication log. However, since the
airtime is “Unknown” in this case, the result of it is recorded as “power failure”.

The communication log is not stored under the following conditions:
 When the sending operation is canceled while storing B&W image or waiting for re-dial i

ng.

 In the case of a power failure during the operation of sending/polling reception including

waiting status for redial, or during receive operation.

 When the receiving operation is canceled before the fax signal is detected.
 If the fax signal is not detected during receiving operation.
 If cancelled during the sequential broadcast.

(The log for the destinations of “not dialed yet” or “waiting for re-dial” is not saved except
for those of which the communication is complete.)

Nonvolatile memory

Nonvolatile memory

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Item Information

Communication start
date / time

Year/month/day/hour/minute

Communication type Sending/receiving/polling reception

Communication ID

Sending/polling reception:

• Destination name of speed dial (first 20 characters)

• Telephone number (last 20 characters)

• Destination fax ID (20 characters)

Receiving:

• Destination fax ID (20 characters)

Airtime Hour/minute/second

Communication pages 0 to 100

Communication result

Common:

Normal/cancel/error code

Sending/polling reception:

No dial tone detected/No fax signal detected/Busy tone detected

Diagnosing code

10 bytes

Protocol data

The latest 43 commands/responses*

• Time stamp

• Sending / receiving

• Command /response code
(See Table 1-10. Command/Response Code (p.35))

• FCF/FIF (first 33 octets).

Table 1-8. FAX Log (2)

Log Name Description Save Destination

The following information of the latest communication is stored.

Protocol trace

Note *: If a large amount of FIF is received, the recorded command/response may

be less than 40.



Error codes

Error

Code

Phenomenon LCD Display Print Example

(HEX)

000 Successful completion (Monochrome) Complete OK

C000 Successful completion (Color) Complete OK Color

400 Communication error Communication error Error code

401 Communication error Communication error Error code

402 Communication error Communication error Error code

403 Communication error Communication error Error code

404 Communication error Communication error Error code

405 Communication error Communication error Error code

407 Communication error Communication error Error code

408 Communication error Communication error Error code

409 Communication error Communication error Error code

410 Communication error Communication error Error code

412 Communication error Communication error Error code

416 Communication error Communication error Error code

417 Communication error Communication error Error code

418 Communication error Communication error Error code

420

421 Communication error Communication error Error code

422 Communication error Communication error Error code

427 Communication error Communication error Error code

Fax signal was not detected during receive operation. (The call was a
telephone call)

Volatile memory

Table 1-9. Error Code List

Not displayed ---

Fatal Error Code List 33

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Table 1-9. Error Code List

Error

Code

(HEX)

433 Communication error Communication error Error code

434 Communication error Communication error Error code

436 Communication error Communication error Error code

459 Communication error Communication error Error code

490 Communication error Communication error Error code

494 Communication error Communication error Error code

495 Communication error Communication error Error code

496 Communication error Communication error Error code

501 Communication error Communication error Error code

502 Communication error Communication error Error code

503 Communication error Communication error Error code

504 Communication error Communication error Error code

505 Communication error Communication error Error code

540 Communication error Communication error Error code

541 Communication error Communication error Error code

542 Communication error Communication error Error code

543 Communication error Communication error Error code

544 Communication error Communication error Error code

550 Communication error Communication error Error code

554 Communication error Communication error Error code

620 Communication error Communication error Error code

621 Communication error Communication error Error code

623 Communication error Communication error Error code

624 Communication error Communication error Error code

630 A busy tone was detected after dialing

631 Communication error Communication error Error code

632 Communication error Communication error Error code

633 Communication error Communication error Error code

634 A fax signal was not detected for a given length of time after dialing No Answer No Answer

637 A dial tone was not detected before dialing No Dial Tone No Dial Tone

638 A power failure occurred during communication Not displayed Power Fail

700 The communication was canceled by an operation Canceled Canceled

706 System error System Error Error code

709 Communication error Communication error Error code

815 Communication error Communication error Error code

870 The image memory is full Memory Full Memory Full

871 The maximum number of files was exceeded Error code Error code

873 Communication error Communication error Error code

874 Communication error Communication error Error code

875 Communication error Communication error Error code

880 System error System Error Error code

881 System error System Error Error code

882 System error System Error Error code

883 System error System Error Error code

884 System error System Error Error code

928 Collision (A call signal was detected when shifting to dial operation) Not displayed ---

F0B Communication error Communication error Error code

F1E Communication error Communication error Error code

F20 Communication error Communication error Error code

Phenomenon LCD Display Print Example

Talking

(Line Busy)

Talking

(Line Busy)

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Table 1-9. Error Code List

Error

Code

(HEX)

F21 System error System Error Error code

F23 Communication error Communication error Error code

F24 Communication error Communication error Error code

F25 Communication error Communication error Error code

F27 System error System Error Error code

F28 System error System Error Error code

F29 Communication error Communication error Error code

F2A Communication error Communication error Error code

F2B No image data for reprint exists No Image ---

F2F System error System Error Error code

F3A Communication error Communication error Error code

F51 System error System Error Error code

F57 Communication error Communication error Error code

F58 Communication error Communication error Error code

F59 System error System Error Error code

F60 A scanner fatal error occurs

F61 A printer fatal error occurs

F62 Reserved --- Error code

F63 ADF misfeed or paper jam occurred

F64 The memory for printing received image is full Error code Error code

Phenomenon LCD Display Print Example

Same message when a scanner

fatal error occurred

Same message when a printer

fatal error occurred

Same message when an ADF

fatal error occurred

*

*

*

Error code

Error code

ADF Jam

Note *: Confirm the fatal error code with the Adjustment Program to check which error occurred. (See " 1.3 Fatal Error Code List

(p20)".)

 Command/response code

Table 1-10. Command/Response Code

Command/response

code

DIS 80 - Digital Identification Signal

CSI 40 - Called Subscriber Identification

NSF 20 - Non-Standard Facilities

DTC 81 - Digital Transmit Command

CIG 41 - CallInG subscriber identification

NSC 21 - Non-Standard facilities Command

PWD C1 - PassWorD

SEP A1 - Selective Polling

Reserved (PSA) 61 - Polled Sub Address

Reserved (CIA) E1 - Calling subscriber Internet Address

Reserved (ISP) 11 - Internet Selective Polling address

DCS 82 - Digital Command Signal

TSI 42 - Transmitting Subscriber Identification

NSS 22 - Non-Standard facilities Set-up

SUB C2 - Sub Address

SID A2 - Sender IDentification

TRN E6 - Training

TCF F0 - Training Check

CTC 12 - Continue To Correct

Reserved (TSA) 62 - Transmitting Subscriber internet Address

FCF value (HEX)

(LSB first: X=0)

First Second

Content

Fatal Error Code List 35

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Table 1-10. Command/Response Code

Command/response

code

Reserved (IRA) E2 - Internet Routing Address

CFR 84 - ConFirmation to Receive

FTT 44 - Failure To Train

CTR C4 - Response for Continue To correct

Reserved (CSA) 24 - Called Subscriber internet Address

EOM 8E - End Of Message

MPS 4E - Multi Page Signal

EOP 2E - End Of Procedure

PRI-EOM 9E - Procedure Interrupt-End Of Message

PRI-MPS 5E - Procedure Interrupt-Multi Page Signal

PRI-EOP 3E - Procedure Interrupt-End Of Procedure

Reserved (EOS) 1E - End Of Selection

PPS-EOM BE 8E Partial Page Signal-End Of Message

PPS-MPS BE 4E Partial Page Signal-Multi Page Signal

PPS-EOP BE 2E Partial Page Signal-End Of Procedure

PPS-PRI-EOM BE 9E Partial Page Signal-Procedure Interrupt- End Of Message

PPS-PRI-MPS BE 5E Partial Page Signal-Procedure Interrupt- Multi Page Signal

PPS-PRI-EOP BE 3E Partial Page Signal-Procedure Interrupt- End Of Procedure

PPS-EOS BE 1E Partial Page Signal-End Of Selection

PPS-NULL BE 00 Partial Page Signal-partial page boundary

EOR-EOM CE 8E End Of Retransmission-End Of Message

EOR-MPS CE 4E End Of Retransmission-Multi Page Signal

EOR-EOP CE 2E End Of Retransmission-End Of Procedure

EOR-PRI-EOM CE 9E End Of Retransmission-Procedure Interrupt-End Of Message

EOR-PRI-MPS CE 5E End Of Retransmission-Procedure Interrupt-Multi Page Signal

EOR-PRI-EOP CE 3E End Of Retransmission-Procedure Interrupt-End Of Procedure

EOR-EOS CE 1E End Of Retransmission-End Of Selection

EOR-NULL CE 00 End Of Retransmission- partial page boundary

RR 6E - Receive Ready

MCF 8C - Message ConFirmation

RTP CC - ReTrain Positive

RTN 4C - ReTrain Negative

PIP AC - Procedure Interrupt Positive

PIN 2C - Procedure Interrupt Negative

PPR BC - Partial Page Request

RNR EC - Receive Not Ready

ERR 1C - Response for End of Retransmission

Reserved (FDM) FC - File Diagnostic Message

DCN FA - DisCoNnect

CRP 1A - Command RePeat

Reserved (FNV) CA - Field Not Valid

PIX FF - PIXel image

Space Other combinations Unknown command/response

FCF value (HEX)

(LSB first: X=0)

First Second

Content

Fatal Error Code List 36

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

1.3.1.2 Error Code/Superficial Phenomenon-Based Troubleshooting

This section explains the troubleshooting procedures based on the error codes and superficial phenomenon.

 When an error occurs, it may be displayed on the LCD panel with a message instead of

an error code. To check the error code, print out a fax log.

 If the problem is not solved even after carrying out the remedy shown in the Table 1-11,

print out a protocol trace to analyze the cause of the error.

Table 1-11. Troubleshooting Based on the Error Code/Superficial Phenomenon

Error code (LCD

Message)/Phenomenon

Communication Error
(The error is indicated with
error code on the fax log.)

Line Busy The line is busy. Try again later.

No answer

Power fail

706,880-884,F21,F27­F28,F2F,F51,F59

Memory full Out of Memory

871

F60 A scanner fatal error occurred

F61 A printer fatal error occurred

F62 Reserved ---

F63

F64

Cannot receive faxes

Cannot dial

Cannot receive/send faxes
in color

Communication error

The other end of the line does not
answer.

The other end of the line
answered but no answer tone is
detected.

Power failure occurred during
sending/receiving/printing/redial i
ng.

A system error (fax circuit failure)
occurs

Maximum number of files is
exceeded

ADF document mis-feed or paper
jam occurs

The memory for printing received
image is full

The telephone cable is not
connected properly.

The telephone line is not working. Verify if the phone line works by connecting to a phone to it.

Auto answer is set to “N”. Set to “Y”.

DRD setting is incorrect.

Calling signal cannot be detected.

The telephone cable is not
connected properly.

The telephone line is not working. Verify if the phone line works by connecting to a phone to it.

Pulse/Tone dial setting error Turn the setting to the other one and try again.

ECM is set to off. Set to on and try again.

Fax mode is set to “B&W only”. Set to “B&W/Color”.

Description Remedy

Turn off v.34 and try again.

Turn off ECM and try again.

When using xDSL, check the connection from “Line” jack to the fax
via the xDSL splitter.

When using TAM, check the connection from “Line” jack to the
TAM via the fax.

Check if the telephone line makes any sounds.

Check the number and dial again.

Confirm the P/S Board Connector Cable or P/S Board is not
damaged, and retry.

Replace the FAX board with a new one.

Ask the sender to re-send the fax in several batches.

•See Table 1-3 " Fatal Error List (Printer)" (p.20).

Table 1-4 "Fatal Error List (ADF/Scanner)" (p.28).

•See

• Set the documents and try again.

• If a paper jam error occurs, remove the jammed paper and try again.

Ask the sender to re-send the fax in several batches.

Connect the telephone cable properly.

Set the setting to “ALL” and try again. Should other ring patterns be
selected, contact the telephone company.

Contact the telephone company or obtain the fax log for more
analysis.

Connect the telephone cable properly.

Fatal Error Code List 37

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Table 1-11. Troubleshooting Based on the Error Code/Superficial Phenomenon

Error code (LCD

Message)/Phenomenon

Cannot print all the
received data when
printing data stored in
memory

Images run off the paper

The size of the memory is 2.0
Mbyte. If the data becomes over
the set threshold, oldest data are
deleted to make room for new
ones.

Auto reduction is set to off. Set auto reduction to on and reprint the data.

Paper size setting does not match
the size of the received data.

Paper size setting does not match
the size of papers in the tray.

Description Remedy

Ask the sender to res end the data if necessary because the data
deleted from the memory can not be restored.

Choose the correct setting and reprint the data.

Choose the correct setting or load correct sized papers in the tray and
reprint the data.

Fatal Error Code List 38

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CHAPTER 2

DISASSEMBLY/REASSEMBLY

Confidential

EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Mechanical

contact sensor

Hook (short)

Hook (long)

Mechanical

contact sensor

Back

Hook (short)

Hook (long)

2.1 Overview

This chapter describes procedures for disassembling the main parts/units of WF­R8590. Unless otherwise specified, disassembled parts/units can be reassembled by
reversing the disassembly procedure. See the cautions or tips for disassembly/
reassembly described in2.3 Disassembly and Assembly Procedure (Page 61).

Read the Safety Precautions (p3) before disassembling and reassembling.

The length of the two hooks on mechanical contact sensor differs.
See the following and make sure to release the shorter hook first
when removing the mechanical contact sensor.

2.1.1 Tools

Use only specified tools to avoid damaging the printer.

Name Availability

(+) Phillips screwdriver #1 O 1080530 JIS B1012-1985

(+) Phillips screwdriver #2 O --- JIS B1012-1985

Flathead screwdriver #3

O ---

Flathead Precision
screwdriver #1

(+) Stubby screwdriver O --- Total length 47 mm or less

Tweezers O ---

Longnose pliers O ---

Teflon tape

Strong tape --- 1032813 Strong tape No.388 Blue

Acetate tape --- 1003963

Teflon tape O ---

Rope O ---

Double-clip O ---

Magnetizer O ---

Tie-wrap O --- Nylon (length 70mm

Cotton Swab O ---

Cleaning Sheet O ---

Sonic Tension Meter U508

O ---

O ---

O 1640645

EPSON

Part Code

Remarks

Qty two

Total length 195mm

Shaft length 100mm

Grip diameter 10mm

Shaft diameter 3mm

NITTO DENKO COPRP.

No.903UL

Sonic Tension MetereU507

EPSON Part Code:1294120

DISASSEMBLY/REASSEMBLY Overview 40

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Name Availability

PHOTO MATTE PAPER

Needle Cap ---- 1653127

Polyester Swab

Note 1:Some of the tools listed above are commercially available.

2: EPSON provides the tools listed with EPSON part code

○

○

EPSON

Part Code

---

---

Remarks

Tex wipe:

Alpha Swab with Long
Handle

(Model number: TX761*)

2.1.1.1 Screw types used in the printer

The screw types used in the printer are shown in the table below. The screw types used
in each part/unit are indicated as the symbols below in the disassembly procedures with
the total number of used screws.

Symbol

S1 C.B.(P2)SCREW,3X6,F/ZN-3C 0.6 ± 0.1N

S2 C.B.EP-TITE SCREW,2.6X17(B=14),F/ZN-3C 0.3 ± 0.05N

S3 C.B.P(W2)-TITE SCREW,3X8,F/ZN-3C 0.6 ± 0.1N

S4 C.B.P-TITE SCREW,2.5X5,F/ZN-3C 0.2 ± 0.05N

S5 C.B.P-TITE SCREW,3X10,F/ZN-3C 0.6 ± 0.1N

S6 C.C.P-TITE SCREW,3X6,F/ZN-3C 0.6 ± 0.1N

S7 C.B.P-TITE SCREW,3X12,F/ZN-3C 0.6 ± 0.1N

S8 C.B.P-TITE SCREW,3X8,F/ZN-3C 0.6 ± 0.1N

S9 C.B.P-TITE SCREW,4X12,F/ZN-3C 0.6 ± 0.1N

S10 C.B.P-TITE(P2)SCREW,3X10,F/ZN-3C 0.6 ± 0.1N

S11 C.B.SCREW,2.5X4,F/ZN-3C 0.3 ± 0.05N

S12 C.B.SCREW,3X12,F/ZN-3C 0.8 ± 0.1N

S13 C.B.SCREW,3X6,F/ZN-3C 0.8 ± 0.1N

S14 C.B.S-TITE SCREW,3X4,F/ZN-3C 0.8 ± 0.1N

S15 C.B.S-TITE SCREW,3X6,F/ZN-3C 0.6 ± 0.1N

Screw Type Torque

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

S16 C.B.S-TITE SCREW,3X6,F/ZN-3C 0.8 ± 0.1N

S17 C.B.S-TITE SCREW,3X8,F/ZN-3C 0.6 ± 0.1N

S18 C.B.S-TITE(P4)SCREW,3X6,F/ZN-3C 0.6 ± 0.1N

S19 C.C.S-TITE SCREW,3X5,F/ZN-3C 0.8 ± 0.1N

S20 C.C.S-TITE SCREW,3X6,F/ZN-3C 0.6 ± 0.2N

S21 C.P.SCREW,2.5X6,F/ZN-3C 0.6 ± 0.1N

S22 C.P.SCREW,3X4,F/ZN-3C 0.6 ± 0.1N

S23 SCREW,MOUNT,HEAD 0.3 ± 0.05N

·m

·m

·m

·m

·m

·m

·m

·m

DISASSEMBLY/REASSEMBLY Overview 41

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Symbol

S24 SHOULDER BOLT,3X4,RASF 0.8 ± 0.1N·m

S25 C.B.S-TITE(P4)SCREW,3X6,F/ZN-3C 0.6 ± 0.1N

S26 C.C.SCREW,3X5,F/ZN-3C 0.8 ± 0.1N

S27 C.P.SCREW,3X5,F/ZN-3C 0.4 ± 0.1N

S28 C.POLYWAVE DELTITE-A SCREW,3X6,F/ZN-3C 0.8 ± 0.1N

S29 C.C.P-TITE SCREW,3X8,F/ZN-3C 0.6 ± 0.1N

S30 C.B.P-TITE SCREW,2.5X10,F/ZN-3C 0.3 ± 0.05N

S31 C.B.S-TITE SCREW,3X8,F/ZN-3C 0.8 ± 0.1N

S32 C.B.P-TITE SCREW,3X10,F/ZN-3C 0.8 ± 0.1N

S33 C.B.S-TITE(P2)SCREW,3X8,F/ZB-3C 0.8 ± 0.1N

S34 C.POLYWAVE SELITE-A 3X6,F/ZN-3C 0.8 ± 0.1N

S35 C.B.P-TITE SCREW,3X8,F/ZN-3C 0.6 ± 0.05N

S36 C.B.P-TITE SCREW,4X12,F/ZN-3C 0.8 ± 0.1N

S37 C.C.SCREW,4X12,F/ZN-3C 0.5 ± 0.05N

S38 C.B.S-TITE SCREW,3X10,F/ZN-3C 0.8 ± 0.1N

Screw Type Torque

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

·m

2.1.2 Standard Operation Time for servicing the product

The following are the standard operation time for servicing the product. The underlined
parts/units are supplied as After Service Parts.

Time

Parts/Unit

Replacement

Option Cassette 1:04 0:38 1:42
Panel Assy 1:08 0:30 1:38
Speaker 1:19 0:00 1:19
Front Cover Assy 0:04 0:00 0:04
Paper Support Support 0:14 0:00 0:14
Left ADF Hinge Cover 1:03 0:00 1:03
Right ADF Hinge Cover 0:50 0:00 0:50
Stacker Assy 0:05 0:00 0:05
Paper Support Assy 2:14 0:00 2:14
Rear ASF Document Support Cover 0:07 0:00 0:07
Cassette Assy 0:04 0:00 0:04

Adjustment/

Inspection

Total

Casette Retard Roller Assy 0:09 0:00 0:09
Casette End Guide 0:10 0:00 0:10
Cassette Microswitch 0:27 0:00 0:27
PE Sensor 3:16 0:00 3:16
Rear Cover Assy 0:36 0:00 0:36
Rear Cover Belt 1:10 0:00 1:10
Rear Cover Control Lever 0:05 0:00 0:05
Maintenance Box 0:11 0:00 0:11
Duplex Unit 0:06 0:01 0:07
Rear Cover PE Sensor 1:54 0:09 2:03
Right Pick UP Roller Sensor 2:00 0:00 2:00

DISASSEMBLY/REASSEMBLY Overview 42

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Time

Parts/Unit

Replacement

Left Pick Up Roller Sensor 2:00 0:00 2:00
Rear ADF Cover 3:24 0:00 3:24
Rear Sub ADF Cover 3:17 0:00 3:17
ADF Side Cover 3:37 0:00 3:37
ADF Paper End Side Cover 3:37 0:00 3:37
Front Sub ADF Cover 0:32 0:00 0:32
Front Main ADF Cover 2:55 0:00 2:55
ADF PF Encoder Sensor 4:22 0:00 4:22
ADF Cover Microswitch 8:07 0:00 8:07
Document Cover Mat Assy 0:48 0:00 0:48
ADF Pad Assy 0:07 0:00 0:07
ADF PF Support Guide 0:07 0:00 0:07
ADF Cover Assy 0:08 0:00 0:08
ADF LD Assy 3:25 0:00 3:25
ADF/ Scanner Unit 5: 28 1:11 6:39
ADF/ Scanner Cable Support 20:32 0:00 20:32

Adjustment/

Inspection

Total

Time

Parts/Unit

Replacement

PW Sensor 41:10 5:03 46:13
Wireless LAN Module 40:24 0:09 40:33
Wireless LAN Module Cable 39:51 0:09 40:00
CSIC Board 42:18 0:09 42:27
Ink End Board 41:34 0:09 41:43
Decompression Motor Assy 43:52 0:09 45:01
Print Head 44:45 49:21 94:06
Print Head Seal 45:11 49:21 94:32
CR Waste Ink Pad 44:55 31:50 76:45
CR Scale/Extension Spring 44:55 0:28 45:33
Star Wheel Assy 42:10 0:09 42:19
Ink Supply Unit 47:33 21:40 69:13
PF Encoder Sensor Assy 40:47 14:21 55:08
Head FFC 56:11 31:50 88.01
Interface Board FFC 42:30 0:09 42:39
Interface Board 43:47 0:30 44:17

Adjustment/

Inspection

Total

ADF Unit 23:30 1:11 24:41

Panel Lower Front Cover*

Panel FFC 7:50 0:00 7:50
Right Upper Front Cover 8:14 0:00 8:14
Front Cover Microswitch 8:26 0:00 8:26
Front Housing 29:06 0:00 29:06
Middle Housing 33:39 0:09 33:48
USB/FAX Cover 34:12 0:09 34:21
USB Connector Assy 40:57 0:09 41:06

1

7:32 0:00 7:32

Main Board Unit 32:19 0:09 32:28
Main Board 48:58 25:57 74:55
Cap Unit 42:32 2:16 44:48
Pump Unit 55:53 2:16 58:09
Waste Ink Joint Tube Assy 50:56 2:16 53:12
Power Supply Unit 40:48 3:12 44:00
Pick Up Roller Motor Assy 43:03 0:50 43:53
PF Motor Assy 46:36 6:47 53:23
PF Timing Belt 46:36 6:47 53:23

DISASSEMBLY/REASSEMBLY Overview 43

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

Time

Parts/Unit

APG Gear Assy 40:59 0:45 41:44
APG Gear Sensor 41:09 0:09 41:18
CR Motor 51:14 7:15 58:29
APG Motor Assy 43:12 0:45 43:57
CR Solenoid Assy 42:58 0:09 43:07
CR Assy 98:55 21:15 120:10
Rear Cover Microswitch 43:57 0:09 44:06
Rear ASF Unit 51:58 1:17 53:15
Sheet Guide 51:18 0:44 52:02
Rear ASF Solenoid Assy 52:59 0:44 53:41
Rear ASF Solenoid Gear Assy 53:05 0:44 53:49
Rear ASF PE Sensor 53:57 0:44 54:41

Machine Unit

2nd Cassette Assy 0:10 0:00 0:10
2nd Cassette Retard Roller Assy 0:22 0:00 0:22

Replacement

74:16 32:50 107:06

Adjustment/

Inspection

Total

Time

Parts/Unit

Replacement

OP Cassette Retard Roller Assy 0:22 0:00 0:22
OP Cassette End Guide 0:27 0:00 0:27
OP Cassette Edge Guide Right 2:13 0:00 2:13
OP Rear Cover Assy 0:45 0:00 0:45
OP Stopper Belt 1:35 0:00 1:35
OP Rear Cover Open Sensor 5:09 0:00 5:09
OP Cassette Sensor 7:59 0:00 7:59
OP Cassette Paper Sensor 8:02 0:00 8:02
OP Cassette PF Sensor 8:02 0:00 8:02
OP Cassette Hopper Sensor 7:56 0:00 7:56

Adjustment/

Inspection

Total

2nd Cassette End Guide 0:27 0:00 0:27
2nd Cassette Edge Guide Right 2:13 0:00 2:13
2nd Rear Cover Assy 0:45 0:00 0:45
2nd Stopper Belt 1:35 0:00 1:35
2nd Rear Cover Open Sensor 33:48 0:35 34:23
2nd Cassette Sensor 36:38 0:35 37:13
2nd Cassette Paper Sensor 36:41 0:35 37:16
2nd Cassette PF Sensor 36:41 0:35 37:16
2nd Cassette Hopper Sensor 36:35 0:35 37:10
OP Cassette Assy 0:10 0:00 0:10

DISASSEMBLY/REASSEMBLY Overview 44

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

N

B

K

C

D

E

I

M

H

J

O

G

L

F

A

2.2 Parts Diagram

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

Left ADF Hinge Cover (p.67)

A

Rear ASF Document Support Cover

B

(p.67)
Paper Support Support (p.66)

C

Right ADF Hinge Cover (p.68)

D

Paper Support (p.69)

E

Middle Housing (p.86)

F

Panel FFC (p.74)

G

Open the Front Cover Assy. (P.65)

H

(p.72)

Panel Assy (p.70)

I

Right Upper Front Cover (p.73)

J

Stacker Assy (p.66)

K

Front Housing (p.75)

L

Speaker (p.71)

M

Front Cover Assy (p.65)

N

Panel Lower Front Cover (p.73)

O

Figure 2-1. Housing

DISASSEMBLY/REASSEMBLY Parts Diagram 45

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

A

D

A

A

A

A

A

C

B

A

E

F

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

Left Pick Up Roller Sensor (p.95)

A

Right Pick Up Roller Sensor (p.94)

B

Rear Cover PF Sensor (p.93)

C

Rear Cover Microswitch (p.92)

D

Casette Microswitch (p.95)

E

PE Sensor (p.96)

F

Figure 2-2. Cover Sensors

DISASSEMBLY/REASSEMBLY Parts Diagram 46

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

A

A

A

A

A

A

A

A

D

G

F

E

C

B

A

A

H

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

Power Supply Unit (p.111)

A

CSIC Board (BK) (p.110)

B

Wireless LAN Module (p.109)

C

USB/FAX Cover (p.97)

D

Interface Board (p.108)

E

Main Board (p.107)

F

Main Board Unit (p.99)

G

USB Connector Assy (p.98)

H

Figure 2-3. Electric Circuit Components

DISASSEMBLY/REASSEMBLY Parts Diagram 47

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

A

A

A

A

A

A

A

A

A

A

A

F

H

D

G

E

I

J

A

C

B

K

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

APG Gear Assy (p.142)

A

APG Motor Assy (p.144)

B

APG Sensor (p.143)

C

CR Scale (p.120)

D

Head FFC (p.124)

E

Print Head (p.114)

F

PW Sensor (p.123)

G

CR Waste Ink Pad (p.119)

H

CR Motor (p.131)

I

CR Unit (p.134)

J

CR Solenoid Assy (p.146)

K

Figure 2-4. Carriage Mechanism

DISASSEMBLY/REASSEMBLY Parts Diagram 48

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

A

A

A

A

A

A

A

B

H

F

E

D

C

A

A

G

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

Ink End Board (p.147)

A

Decompression Motor Assy (p.141)

B

Maintenance Box (p.64)

C

Waste Ink Joint Tube Assy (p.166)

D

Pump Unit (p.164)

E

Cap Unit (p.157)

F

Ink End Board (p.147)

G

Ink Supply Unit (p.148)

H

Figure 2-5. Ink System Mechanism

DISASSEMBLY/REASSEMBLY Parts Diagram 49

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

A

A

A

A

A

A

A

A

A

A

A

C

E

J

B

A

K

I

H

G

D

F

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

PF Tension Stopper (p.178)

A

Pick Up Roller Motor Assy (p.176)

B

Rear Cover Control Lever (p.174)

C

Rear Cover Assy/Rear Cover Belt

D

(p.174)
Duplex Unit (p.175)

E

PE Sensor (p.182)

F

Star Wheel Assy (p.187)

G

PF Sensor (p.186)

H

PF Motor Assy (p.181)

I

PF Encoder Sensor Assy (p.175)

J

PF Timing Belt (p.179)

K

Figure 2-6. Paper Feed Mechanism

DISASSEMBLY/REASSEMBLY Parts Diagram 50

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

A

A

A

A

A

B

D

A

E

C

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

Rear ASF Solenoid Assy (p.191)

A

Rear ASF Unit (p.188)

B

Rear ASF PE Sensor (p.193)

C

Sheet Guide (p.190)

D

Rear ASF Solenoid Gear Assy (p.192)

E

Figure 2-7. Rear ASF Mechanism

DISASSEMBLY/REASSEMBLY Parts Diagram 51

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EPSON WF-R8590/WF-R8591/WF-R8593 Revision F

A

A

A

A

A

A

E

D

A

C

B

F

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

Ink Supply BK Cover Assy (p.195)

A

Ink Supply BK Cover Open Sensor

B

(p.199)

Ink Supply BK Assy (p.201)

C

Ink Pack Holder (BK) (p.207)

D

Tube (p.209)

E

CSIC FFC (p.211)

F

Figure 2-8. Ink Supply Mechanism (1)

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A

A

A

A

A

A

A

A

A

D

A

C

B

F

D

D

E

E

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

Ink Supply CL Cover Assy (p.197)

A

Ink Supply CL Cover Open Sensor

B

(p.200)

Ink Supply CL Assy (p.203)

C

Ink Pack Holder (Y/M/C) (p.208)

D

Tube (p.209)

E

CSIC FFC (p.211)

F

Figure 2-9. Ink Supply Mechanism (2)

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A

A

A

A

A

A

A

A

A

A

E

D

A

C

J

G

H

F

B

I

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

ADF Cover Assy (p.221)

A

Rear ADF Cover/ Rear Sub ADF Cover

B

(p.222)

Document Cover Mat Assy (p.225)

C

ADF Unit (p.218)

D

ADF/ Scanner Unit (p.216)

E

ADF Side Cover/ ADF Paper End Side

F

Cover (p.232)

Bottom ADF Document Support (p.243)

G

Top ADF Document Support Assy (p.241)

H

Front Sub ADF Cover/ Front Main ADF Cover

I

(p.223)

ADF PF Support Guide (p.231)

J

Figure 2-10. ADF Unit/ Scanner Mechanism

DISASSEMBLY/REASSEMBLY Parts Diagram 54

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A

A

A

A

A

A

A

A

A

A

A

K

J

I

A

D

B

E

G

C

H

F

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

ADF LD Assy (p.229)

A

ADF PW Sensor A (p.235)

B

Left ADF Hinge (p.240)

C

ADF PE Sensor A (p.233)

D

ADF PW Sensor B (p.236)

E

ADF Document Detection Sensor B

F

(p.238)

ADF Document Detection Sensor A (p.237)

G

Right ADF Hinge (p.239)

H

ADF PF Encoder Sensor (p.227)

I

ADF Cover Microswitch (p.226)

J

ADF Pad Assy (p.225)

K

Figure 2-11. ADF Unit

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A

A

B

A

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

Casette End Guide (p.244)

A

Casette Assy (p.244)

B

Figure 2-12. Cassette Mechanism

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A

A

A

A

A

D

E

B

A

C

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

OP Cassette End Guide (p.259)

A

OP Casette Retard Roller Assy (p.258)

B

OP Cassette Edge Guide Right (p.259)

C

OP Casette Unit (p.257)

D

OP Cassette Assy (p.258)

E

Figure 2-13. Option Cassette Mechanism (1)

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A

A

A

A

A

A

A

A

A

A

A

E

I

J

A

B

H

K

D

F

G

C

A

L

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

OP Left Cover (p.262)

A

OP Rear Frame Assy (p.263)

B

OP Cassette Microswitch (p.271)

C

OP Cassette PF Sensor (p.272)

D

OP Rear Cover Assy (p.261)

E

OP Cassette Paper Sensor (p.273)

F

OP Cassette Hopper Sensor (p.274)

G

OP Rear Cover Open Microswitch (p.268)

H

Stopper Belt (p.261)

I

OP Right Cover (p.262)

J

OP Rear Frame Cover Assy (p.268)

K

OP Cassette Drive Assy (p.266)

L

Figure 2-14. Option Cassette Mechanism (2)

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A

A

A

A

A

A

A

A

B

D

F

G

C

E

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

2nd Cassette Unit (p.245)

A

2nd Cassette Assy (p.247)

B

2nd Cassette Frame Assy (p.247)

C

2nd Cassette Drive Assy (p.251)

D

Actuator (p.253)

E

Sensor (p.254)

F

Feed Roller (p.256)

G

Figure 2-15. 2nd Cassette Unit

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A

A

No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name No. Part/ Unit name

Mechanism Unit (p.275)

A

Figure 2-16. Printer Mechanism

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Left

Gear

CR locked

(The lever is raised)

CR Lock Lever

CR unlocked

(The Lever is lowered)

2.3 Disassembly and Assembly Procedure

2.3.1 Preparation for servicing

The common work used by the repair is described as follows.
Please refer to disassembly and reassembly sequence of the each parts whether
these work are necessary or not.

2.3.1.1 Unlocking the CR Unit

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

3. Remove the Left ADF Hinge Cover. (P.67)

4. Remove the Right ADF Hinge Cover. (P.68)

5. Remove the ADF/ Scanner Unit. (P.216)

6. Remove the Panel Lower Front Cover. (P.73)

7. Remove the Right Upper Front Cover. (P.73)

8. Remove the Stacker Assy. (P.66)

9. Remove the Cassette Assy. (P.244)

16. Rotate the gear shown in the figure in the direction of the arrow to unlock the CR
Unit.

Figure 2-17. 4Unlocking the CR Unit

10. Remove the Front Cover Microswitch. (P.72)

11. Remove the Ink Supply BK Cover Assy. (P.195)

12. Remove the Ink Supply CL Cover Assy. (P.197)

13. Remove the Front Housing. (P.75)

14. Remove the Ferrite Core Holder. (P.74)

15. Remove the Middle Housing. (P.86)

Figure 2-18. Status of the CR Lock Lever

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CR Unit

Push and Fix the BK
Sensor lever by Tape

Push and Fix the BK

Sensor lever by Tape

When moving the CR Unit, make sure to hold it by the location
shown below.

Figure 2-19. Moving the CR Unit

2.3.1.2 Ink flushing

1. Replace the maintenance box with the one for the repair. (P.64)

 Before performing Ink flushing, confirm the Maintenance Box

counter is 60% or less.

2. Open the Ink Supply BK Cover Assy.(P.195)

3. Push and fix the lever of the Ink Supply BK Cover Open Sensor with tape.

Figure 2-20. Fixing the Ink Supply BK Cover Open Sensor

4. Open the Ink Supply CL Cover Assy.(P.197)

5. Push and fix the lever of the Ink Supply CL Cover Open Sensor with tape.

Figure 2-21. Fixing the Ink Supply CL Cover Open Sensor

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AC Cable

Power Supply Unit

AC Inlet

6. Turn on the printer and conform the printer becomes ready, then remove the all Ink
Packs.

7. Perform the “Ink Flushing” with Adjustment Program.

Figure 2-22. Perform the ink flushing

Use the latest adjustment program (since Ver.1.06).

2.3.1.3 Initial Ink charge

1. Replace maintenance box with the one for the repair. (P.64)

2. Open the Ink Supply BK Cover Assy. (P.195)

3. Install the BK Ink Pack for the repair.

4. Open the Ink supply CL Cover Assy.(P.197)

5. Install the Y/M/C Ink Packs for the repair.

6. Close the Ink supply BK Cover Assy and the Ink supply CL cover Assy.

7. Plug the AC cable into the AC inlet of the printer.

8. Wait until the printer becomes ready.

9. Perform the “Initial ink charge” with the adjustment program.

8. Unplug the AC Cable from the AC Inlet of the Power Supply Unit.

Figure 2-24. Perform the Initial Ink charge

10. Perform the “Nozzle check print “with the adjustment program.

Figure 2-23. Unplug the AC Cable

11. If the nozzle-missing appeared in paper, perform the cleaning.

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Film

2.3.2 Consumables/Accessories

2.3.2.1 Maintenance Box

Take care not to drop the screws or the like on the Maintenance
Box. Doing so may damage the film on the Maintenance Box.

1. Open the Rear Cover Assy. (P.174)

2. Remove the Maintenance Box.

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Both

Hook (Left)

Hook (Right)

2.3.3 Housing

2.3.3.1 Front Cover Assy

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Open the Front Cover Assy.

2. Disengage the both of the Front Cover Assy.

3. Disengage the left side hook using the flatbed screw driver.

4. Disengage the right side hook, and remove the Front Cover Assy.

Figure 2-26. Removing the Front Cover Assy (2)

The picture of Figure 2-25 and Figure 2-26 is WF-8590 series's
picture.

Figure 2-25. Removing the Front Cover Assy (1)

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Tab

Tab

2.3.3.2 Paper Support Support

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Disengage the two tabs of the Paper Support Support, and remove the Paper
Support Support.

2.3.3.3 Stacker Assy

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Stacker Assy.

Figure 2-27. Removing the Paper Support Support

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Tab

Tab

S5

ADF/ Scanner Unit

S5

2.3.3.4 Rear ASF Document Support Cover

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Disengage the two tabs of the Rear ASF Document Support Cover, and remove the
Rear ASF Document Support Cover.

2.3.3.5 Left ADF Hinge Cover

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Paper Support Support. (P.66)

2. Open the ADF/ Scanner Unit.

3. Remove the two screws (S5).

Figure 2-28. Removing the Rear ASF Document Support Cover

Figure 2-29. Removing the Left ADF Hinge Cover (1)

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ADF/ Scanner Unit

S5

ADF/ Scanner

Unit

S5

4. Remove the Left ADF Hinge Cover in the direction of the arrow while lifting the
ADF/ Scanner Unit.

Figure 2-30. Removing the Left ADF Hinge Cover (2)

2.3.3.6 Right ADF Hinge Cover

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Paper Support Support. (P.66)

2. Open the ADF/ Scanner Unit.

3. Remove the three screws (S5).

Figure 2-31. Removing the Right ADF Hinge Cover (1)

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ADF/ Scanner Unit

4. Remove the Right ADF Hinge Cover in the direction of the arrow while lifting the
ADF/ Scanner Unit.

Figure 2-32. Removing the Right ADF Hinge Cover (2)

2.3.3.7 Paper Support

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Paper Support Support. (P.66)

2. Remove the Left ADF Hinge Cover. (P.67)

3. Remove the Paper Support.

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Hook

S5

TabInsert positionTab Insert position

Screw Cover

2.3.3.8 Panel Assy

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Open the ADF/ Scanner Unit.

2. Remove the four Screw Cover.

3. Remove the four screws (S5).

4. Insert a flathead screwdriver or a similar tool insert into the two insert potions

shown in Figure 2-33 and release each four tabs.

5. Disengage the five hooks, and remove the Panel Assy.

Figure 2-33. Removing the Panel Assy (1)

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Grounding wire

Panel Board

Speaker Cable

Panel FFC

Speaker Holder

Speaker Holder

Urethane

6. Disconnect the Panel FFC, grounding wire and Speaker Cable from the Panel
Board, and remove the Panel Assy.

Figure 2-34. Removing the Panel Assy (2)

Carry out the adjustments referring to "3.1 Required Adjustments"

(p279)

when the Panel Assy is replaced.

2.3.3.9 Speaker

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Speaker Holder Urethane outward.

3. Slide the Speaker Holder in the direction of the arrow, and remove the Speaker.

DISASSEMBLY/REASSEMBLY Disassembly and Assembly Procedure 71

Figure 2-35. Removing the Speaker

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Hook

Hook

Connector

Cable

2.3.3.10 Front Cover Microswitch

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

3. Remove the Left ADF Hinge Cover. (P.67)

4. Remove the Right ADF Hinge Cover. (P.68)

5. Remove the ADF/ Scanner Unit. (P.216)

6. Remove the Panel Lower Front Cover. (P.73)

9. Disconnect the cable from the connector.

10. Disengage the two hooks, and remove the Front Cover Microswitch.

Figure 2-36. Removing the Front Cover Microswitch

7. Open the Front Cover Assy. (P.65)

8. Remove the Right Upper Front Cover upward. (P.73)

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Ferrite Core

Grounding wire

S5

2.3.3.11 Right Upper Front Cover

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

3. Remove the Left ADF Hinge Cover. (P.67)

4. Remove the Right ADF Hinge Cover. (P.68)

2.3.3.12 Panel Lower Front Cover

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

3. Remove the Left ADF Hinge Cover. (P.67)

4. Remove the Right ADF Hinge Cover. (P.68)

5. Remove the ADF/ Scanner Unit. (P.216)

6. Release the grounding wire from hooks to prevent cutting.

7. Remove the Ferrite Core.

8. Remove the four screws (S5), and remove the Panel Lower Front Cover.

5. Remove the ADF/ Scanner Unit. (P.216)

6. Remove the Panel Lower Front Cover. (P.73)

7. Open the Front Cover Assy. (P.65)

8. Remove the Right Upper Front Cover upward.

Figure 2-37. Removing the Panel Lower Front Cover

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Connector

Ferrite Core

Ferrite Core

Ferrite Core

S5

Ferrite Core Holder

Grounding

Plate

Grounding

Plate

2.3.3.13 Panel FFC

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

3. Remove the Left ADF Hinge Cover. (P.67)

4. Remove the Right ADF Hinge Cover. (P.68)

5. Remove the ADF/ Scanner Unit. (P.216)

6. Disconnect the Panel FFC from the connector of the Main Board.

7. Remove the two screws (S5), and remove the two Grounding Plate.

8. Remove the Ferrite Core Holder.

9. Remove the three Ferrite Core from the Middle Housing.

10. Remove the three Ferrite Core from the Panel FFC.

Figure 2-38. Removing the Panel FFC

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Press down with your finger.

Hook

Inner

Cover

S5

Hook

2.3.3.14 Front Housing

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

3. Remove the Left ADF Hinge Cover. (P.67)

13. Remove the two screws (S5) that secure the Inner Cover of the Ink Supply BK
Assy.

14. Disengage the two hooks of the Inner Cover.

4. Remove the Right ADF Hinge Cover. (P.68)

5. Remove the ADF/ Scanner Unit. (P.216)

6. Remove the Panel Lower Front Cover. (P.73)

7. Remove the Right Upper Front Cover. (P.73)

8. Remove the Stacker Assy. (P.66)

9. Remove the Cassette Assy. (P.244)

10. Remove the Front Cover Microswitch. (P.72)

11. Remove the Ink Supply BK Cover Assy. (P.195)

12. Remove the Ink Supply CL Cover Assy. (P.197)

Figure 2-39. Removing the Ink Supply BK Assy (1)

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Inner Cover

Hook

Hook

Cable

Hook

Marking

Tube

15. Pull the Inner Cover toward you, and remove it upward.

Figure 2-40. Removing the Ink Supply BK Assy (2)

Make sure you insert two hook of the inner cover in the base of the
Ink Supply BK Assy. The Ink supply BK cover Assy does not open
if the hooks are not well

16. Release the cable of the Ink Supply BK Cover Open Sensor from the hook.

Figure 2-41. Removing the Ink Supply BK Assy (3)

17. Mark the tube at the point shown below.

Figure 2-42. Removing the Ink Supply BK Assy (4)

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S31

Hook

Hook

Hook

Hook

18. Remove the six screws (S31).

Figure 2-43. Removing the Ink Supply BK Assy (5)

19. Pull the Ink Supply BK Assy toward you to disengage the two hooks.

20. Lift the Ink Supply BK Assy to disengage the two hooks.

Figure 2-44. Removing the Ink Supply BK Assy (6)

Figure 2-45. Removing the Ink Supply BK Assy (7)

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Press down with your finger.

S5

Inner

Cover

Hook

Hook

21. Slide the Ink Supply BK Assy backward.

Figure 2-46. Sliding the Ink Supply BK Assy

22. Remove the three screws (S5) that secure the Inner Cover of the Ink Supply CL
Assy.

23. Disengage the two hooks of the Inner Cover.

Figure 2-47. Removing the Ink Supply CL Assy (1)

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Hook

Hook

Inner Cover

S5

Hook

Switch Cover

24. Pull the Inner Cover toward you, and remove it upward.

Make sure you insert two hook of the inner cover in the base of the
Ink Supply CL Assy. The Ink supply CL cover Assy does not open
if the hooks are not well.

Figure 2-48. Removing the Ink Supply CL Assy (2)

25. Remove the screw (S5).

26. Disengage the hook, and remove the Switch Cover.

Figure 2-49. Releasing the cable (1)

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Cable

Connector

Cable

Ferrite Core

Grounding

wire

S31

CN1

CSIC

Board (CL)

Hole

FFC

Grounding

wire

Tube (Y/M)

Tube (C)

Marking

Marking

Marking

27. Disconnect the cable from the connector.

Figure 2-50. Releasing the cable (2)

28. Release the cable of the Ink Supply CL Cover Open Sensor.

29. Remove the screw (S31), and remove the grounding wire.

Pull out the grounding wire from the hole shown in the figure
below.

30. Disconnect the FFC from the connector (CN1) of the CSIC Board (CL).

Figure 2-52. Removing the Ink Supply CL Assy (3)

31. Mark the tube at the point shown below.

DISASSEMBLY/REASSEMBLY Disassembly and Assembly Procedure 80

Figure 2-51. Releasing the cable (2)

Confirmed that the Ferrite Core is not on the CSIC Board (CL)
before turning on the power. Not only the CSIC Board (CL) but
also the main board is damaged if the Ferrite Core is on the CSIC
Board (CL).

Figure 2-53. Removing the Ink Supply CL Assy (4)

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S31

S17

S15

S38

Hook

Hook

32. Remove the seven screws (S15:2 pcs, S31: 4pcs,S17: 1pice)

Figure 2-54. Removing the Ink Supply CL Assy (5)

33. Loose the screws(x4) and don’t remove it

34. Pull the Ink Supply CL Assy toward you to disengage the two hooks.

Figure 2-56. Removing the Ink Supply CL Assy (7)

Figure 2-55. Removing the Ink Supply CL Assy (6)

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Hook

35. Lift the Ink Supply CL Assy to disengage the four hooks.

36. Slide the Ink Supply CL Assy backward.

Figure 2-58. Sliding the Ink Supply CL Assy

Figure 2-57. Removing the Ink Supply CL Assy (7)

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S7

S17

Front Cover

Assy

S5

Tab (left upper)

Tab (right upper)

37. Open the Front Cover Assy.

38. Remove the nine screws (S5:1piece S7:6pcs: S17:2pcs)

Figure 2-59. Removing the Front Housing (1)

39. Release the two tabs on the upper part in the order from the left to the right. Use a
flat-head screwdriver to release the tab on the right because it is stiff.

Figure 2-60. Removing the Front Housing (2)

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Front Housing

Space

Lower Housing

Hole

Hook

Lower Housing

Hook

Front Housing

Space

Hole

40. On the lower left, insert the flat-head screwdriver (φ 3.5 mm or less) into the hole
on the Lower Housing in the direction of the arrow and release the hook.

41. By holding the point shown below, pull the Front Housing toward you to make
some space between the Front Housing and the Lower Housing.

Figure 2-61. Removing the Front Housing (3)

42. Insert the flat-head screwdriver into the space between the Front Housing and the
Lower Housing, and pull the Front Housing slightly toward you.

43. On the lower right, insert the flat-head screwdriver (φ 3.5 mm or less) into the hole
on the Lower Housing in the direction of the arrow and release the hook.

44. By holding the point shown below, pull the Front Housing toward you to make
some space between the Front Housing and the Lower Housing.

Figure 2-63. Removing the Front Housing (5)

45. Insert the flat-head screwdriver into the space between the Front Housing and the
Lower Housing, and pull the Front Housing slightly toward you.

Figure 2-64. Removing the Front Housing (6)

Figure 2-62. Removing the Front Housing (4)

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Lower Housing

Front Housing

Hook

Hook

Left Right

Lower Housing

Guide

Guide

Rib and hole

Lower Housing

Right

46. Insert the flat-head screwdriver between the Front Housing and the Lower
Housing, and pull the Front Housing toward you to remove it.

Figure 2-65. Removing the Front Housing (7)

47. Remove the Front Housing while pulling it toward you.

When installing the Front Housing, be careful of the following.

 Insert the two hooks on the lower part straight into the holes on

the Lower Housing.

 Make sure to align the guides on the Front Housing and the

Lower Housing correctly.

 Insert the rib on the Front Housing into the hole on the Lower

Housing.

Figure 2-66. Removing the Front Housing (8)

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S15

Ink Holder

Cover

Clamp

Inside of the Ink

Supply Unit

Clamp

2.3.3.15 Middle Housing

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

13. Remove the Front Housing. (P.75)

14. Remove the Ferrite Core Holder. (P.74)

15. Remove the two screws (S15), and remove the Ink Holder Cover.

Figure 2-67. Removing the Ink Holder Cover

16. Release the FFC from the three clamps.

3. Remove the Left ADF Hinge Cover. (P.67)

4. Remove the Right ADF Hinge Cover. (P.68)

5. Remove the ADF/ Scanner Unit. (P.216)

6. Remove the Panel Lower Front Cover. (P.73)

7. Remove the Right Upper Front Cover. (P.73)

8. Remove the Stacker Assy. (P.66)

9. Remove the Cassette Assy. (P.244)

10. Remove the Front Cover Microswitch. (P.72)

11. Remove the Ink Supply BK Cover Assy. (P.195)

12. Remove the Ink Supply CL Cover Assy. (P.197)

Figure 2-68. Releasing the Tube (BK) and FFC (1)

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Tube (BK)

Clamp

FFC

Ink Supply

BK Assy

Tube (BK)

Clamp

FFC

OK

No Good

OK

No Good

17. Release the Tube (BK) and FFC from the clamp.

To prevent the Tube (BK) from being folded, check the state
of the Tube (BK) shown in the figure below after installing
the Ink Supply BK Assy

Figure 2-69. Releasing the Tube (BK) and FFC (2)

In the following step, take care not to let the Tube (BK) or FFC get
caught on the clamp.

18. Move the Ink Supply BK Assy in front of the Middle Housing.

Figure 2-70. Moving the Ink Supply BK Assy

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Rear Cover Assy

S5

S17

S5

Tab and hole

Lower Housing

Tab and hole

Main Board

Grounding wire

Panel FFC

19. Open the Rear Cover Assy. (P.174)

20. Remove the six screws (S5: 4 pcs, S17: 2 pcs).

21. Release the two tabs of the Middle Housing from the holes of the Lower Housing.

Figure 2-72. Removing the Middle Housing (2)

22. Disconnect the Panel FFC from the connector of the Main Board.

23. Release the grounding wire.

DISASSEMBLY/REASSEMBLY Disassembly and Assembly Procedure 88

Figure 2-71. Removing the Middle Housing (1)

Figure 2-73. Removing the Middle Housing (3)

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USB/FAX Cover

EXT Connector Cover

Flat-head screwdriver

Cable of the Front Cover

Microswitch

USB Cable

Grounding plate

24. While releasing the Middle Housing from the USB/FAX Cover, remove the
Middle Housing upward.

Figure 2-74. Removing the Middle Housing (4)

 Remove the EXT Connector Cover if it is installed.
 If it is difficult to release the cover, insert the flat-head

screwdriver to release fixing points on the Middle Housing.

 Take care not to catch the USB Cable and the cable of the

Front Cover Microswitch.

 Take care not to deform the grounding plate.

 Install the Middle Housing taking care not to let it interfere

with the Front Frame and Rear ASF Unit.

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Right side

Cable of the Ink Supply

Cover Open Sensor

Right Lower

Tube Guide

Hook

Right Lower

Tube Guide

Tube (Y/M/C)

Grounding

wire

Right side

 Route the cable of Ink Supply Cover Open Sensor through the

two hooks on the Right Lower Tube Guide.

 Route the Tube (Y/M/C) and the grounding wire inside the

Right Lower Tube Guide, and insert them in the lower section
of the Right Lower Tube Guide.

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Right Upper Tube Guide

Left Tube Clip

Ink Supply Unit

Route the Tube (Y/M/C) as shown below.

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Hooks

Connector

Cable

2.3.4 Cover Sensors

2.3.4.1 Rear Cover Microswitch

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

3. Remove the Left ADF Hinge Cover. (P.67)

4. Remove the Right ADF Hinge Cover. (P.68)

5. Remove the ADF/ Scanner Unit. (P.216)

16. Remove the USB/FAX Cover. (P.97)

17. Slide the Main Board Unit. (P.99)

18. Disengage the two hooks, and remove the Rear Cover Microswitch.

19. Disconnect the cable from the connector.

Figure 2-75. Removing the Rear Cover Microswitch

6. Remove the Panel Lower Front Cover. (P.73)

7. Remove the Right Upper Front Cover. (P.73)

8. Remove the Stacker Assy. (P.66)

9. Remove the Cassette Assy. (P.244)

10. Remove the Front Cover Microswitch. (P.72)

11. Remove the Ink Supply BK Cover Assy. (P.195)

12. Remove the Ink Supply CL Cover Assy. (P.197)

13. Remove the Front Housing. (P.75)

14. Remove the Ferrite Core Holder.(P.74)

15. Remove the Middle Housing. (P.86)

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Lower Paper Guide

S5

Hooks

Connector

Cable

2.3.4.2 Rear Cover PF Sensor

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Duplex Unit. (P.175)

When removing the screws in the next step, use a 40 mm-long or
shorter stubby screwdriver.

3. Disengage the four hooks, and remove the Rear Cover PE Sensor.

4. Disconnect the cable from the connector.

Figure 2-77. Removing the Rear Cover PE Sensor

2. Remove the three screws (S5), and open the Lower Paper Guide.

Figure 2-76. Opening the Lower Paper Guide

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S5

Lower Paper Guide

Hooks

Connector

Cable

2.3.4.3 Right Pick Up Roller Sensor

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Duplex Unit. (P.175)

2. Remove the four screws (S5), and remove the Lower Paper Guide.

3. Disengage the four hooks, and remove the Right Pick Up Roller Sensor.

4. Disconnect the cable from the connector.

Figure 2-79. Removing the Right Pick Up Roller Sensor

Figure 2-78. Opening the Lower Paper Guide

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Hooks

Connector

Cable

Hook

Connector

Cable

Hook

Bottom

2.3.4.4 Left Pick Up Roller Sensor

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Duplex Unit. (P.175)

2. Open the Lower Paper Guide. (refer to (p94))

3. Disengage the four hooks, and remove the Left Pick Up Roller Sensor.

4. Disconnect the cable from the connector.

2.3.4.5 Casette Microswitch

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Cassette Assy. (P.244)

2. Disengage the two hooks, and remove the Casette Microswitch.

3. Disconnect the cable from the connector.

Figure 2-81. Removing the Casette Microswitch

Figure 2-80. Removing the Left Pick Up Roller Sensor

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Hooks

Bottom

Connector

Cable

2.3.4.6 PE Sensor

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Cassette Assy. (P.244)

2. Disengage the four hooks, and remove the PE Sensor.

3. Disconnect the cable from the connector.

Figure 2-82. Removing the PE Sensor

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S1

2.3.5 Electric Circuit Components

2.3.5.1 USB/FAX Cover

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

3. Remove the Left ADF Hinge Cover. (P.67)

4. Remove the Right ADF Hinge Cover. (P.68)

16. Remove the two screws (S1), and remove the USB/FAX Cover.

Figure 2-83. Removing the USB/FAX Cover

5. Remove the ADF/ Scanner Unit. (P.216)

6. Remove the Panel Lower Front Cover. (P.73)

7. Remove the Right Upper Front Cover. (P.73)

8. Remove the Stacker Assy. (P.66)

9. Remove the Cassette Assy. (P.244)

10. Remove the Front Cover Microswitch. (P.72)

11. Remove the Ink Supply BK Cover Assy. (P.195)

12. Remove the Ink Supply CL Cover Assy. (P.197)

13. Remove the Front Housing. (P.75)

14. Remove the Ferrite Core Holder.(P.74)

15. Remove the Middle Housing. (P.86)

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Main Board

USB Cable

S17

Connector

Clamp

Clamp

2.3.5.2 USB Connector Assy

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

13. Remove the Front Housing. (P.75)

14. Remove the Ferrite Core Holder.(P.74)

15. Remove the Middle Housing. (P.86)

16. Disconnect the USB Cable from the connector of the Main Board.

17. Release the USB Cable from the two clamps.

18. Remove the screw (S17), and remove the USB Connector Assy.

3. Remove the Left ADF Hinge Cover. (P.67)

4. Remove the Right ADF Hinge Cover. (P.68)

5. Remove the ADF/ Scanner Unit. (P.216)

Figure 2-84. Removing the USB Connector Assy

6. Remove the Panel Lower Front Cover. (P.73)

7. Remove the Right Upper Front Cover. (P.73)

8. Remove the Stacker Assy. (P.66)

9. Remove the Cassette Assy. (P.244)

10. Remove the Front Cover Microswitch. (P.72)

11. Remove the Ink Supply BK Cover Assy. (P.195)

12. Remove the Ink Supply CL Cover Assy. (P.197)

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Hook

USB Cable

Route the USB Cable through the hook on the USB Connector
Assy.

2.3.5.3 Main Board Unit

For the screw types, see 2.1.1.1 Screw types used in the printer (p41).

1. Remove the Panel Assy. (P.70)

2. Remove the Paper Support Support. (P.66)

3. Remove the Left ADF Hinge Cover. (P.67)

4. Remove the Right ADF Hinge Cover. (P.68)

5. Remove the ADF/ Scanner Unit. (P.216)

6. Remove the Panel Lower Front Cover. (P.73)

7. Remove the Right Upper Front Cover. (P.73)

8. Remove the Stacker Assy. (P.66)

9. Remove the Cassette Assy. (P.244)

10. Remove the Front Cover Microswitch. (P.72)

11. Remove the Ink Supply BK Cover Assy. (P.195)

12. Remove the Ink Supply CL Cover Assy. (P.197)

13. Remove the Front Housing. (P.75)

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Tube (C)

Left Tube Clip

Tube (Y)

Tube (M)

Tube Clamp

14. Remove the Ferrite Core Holder.(P.74)

15. Remove the Middle Housing. (P.86)

16. Remove the USB/FAX Cover. (P.97)

17. Release the Ink Tube (Y,M,C) from the Left Tube Clip.

18. Release the Ink Tube (Y,M,C) from the Tube Clamp.

Figure 2-86. Release the Ink Tube (Y,M,C)

Figure 2-85. Release the Ink Tube (Y,M,C)

DISASSEMBLY/REASSEMBLY Disassembly and Assembly Procedure 100

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