EPSON L1455, ET-16500 Service Manual

SERVICE MANUAL

Color Inkjet Printer

Epson L1455

Epson ET-16500

CONFIDENTIAL

SEMF16-001

Notice:

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 r egistered

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

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, fo r cleaning during repair and maintenance, the use of such products containing flammable gas is prohibited.

PRECAUTIONS

Strictly observe the following cautions. Failure to comply may lead to personal injury or damage of the product.

1. Repairs on Epson product should be performed only by an Epson certified repair technician.

2. No work should be performed on this product by persons unfamiliar with basic safety knowledge required for electrician.

3. The power rating of this product is indicated on the serial number/rating plate. Never connect this product to the power source whose voltages is different from the rated voltage.

4. Replace malfunctioning components only with those components provided or approved by Epson; introduction of second-source ICs or other non-approved components may damage the product and void any applicable Epson warranty.

5. The capacitors on the Main Board may be electrically charged right after the power turns off or after driving motors which generates counter electromotive force such as when rotating the PF Roller or when moving the CR Unit. There is a risk to damage the Main Board if the Head FFC is short-circuited with the capacitors on the Main Board electrically charged, therefore, after the power turns off or after motors are driven, leave the printer untouched for approximately 30 seconds to discharge the capacitors before starting disassembly/ reassembly.

6. To prevent the circuit boards from short-circuiting, be careful about the following when handling FFC or cables.



When handling FFC, take care not to let the terminal section of FFC touch metal parts.

 When connecting cables/FFC to the connectors on circuit boards, connect them straight to the connectors to avoid

slant insertion.

Confidential

7. In order to protect sensitive microprocessors and circuitry, use static discharge equipment, such as anti-static wrist straps, when accessing internal components.

8. 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.

9. 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.

10. When disassembling or assembling this product, make sure to wear gloves to avoid injuries from metal parts with sharp edges.

11. Use only recommended tools for disassembling, assembling or adjusting the printer.

12. Observe the specified torque when tightening screws.

13. Be extremely careful not to scratch or contaminate the following parts.

Nozzle plate of the printhead

  CR Scale  PF Scale  Coated surface of the PF Roller  Gears  Rollers  LCD  Scanner Sensor  Exterior parts

14. 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.

15. Apply the specified amount of grease described in this manua l .

16. Make the specified adjustments when you disassemble the printer.

17. When cleaning this product, follow the procedure described in this manual.

18. When transporting this product after filling the ink in the printhead, pack the printer without removing the ink cartridges in order to prevent the printhead from drying out.

19. Make sure to install antivirus software in the computers used for the service support activities.

20. Keep the virus pattern file of antivirus software up-to-date.

21. When disassembling/reassembling this product, if you find adhesive power of the double-sided tape which secure the parts or FFC is not enough, replace the tape with new one and attach it correctly to the specified points where the parts or FFC should be secured.

22. Unless otherwise specified in this manual, the labels attached on the returned product should be transferred to the corresponding attachment positions on the new one referring to the labels on the returned product.

Confidential

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.

For Chapter 2 “Disassembly/Reassembly”, symbols other than indicated above are used to show additional information for disassembly/reassembly. For the details on those symbols, see "2.3 Disassembly/Reassembly

Procedures (p46)".

Confidential

Revision Status

Revision Date of Issue Description

A June 3, 2016 First Release

Confidential

Epson L1455 / ET-16500 Revision A

Contents

Chapter 1 Troubleshooting

1.1 Troubleshooting....................................................................................................................................................... 10

1.1.1 Troubleshooting Workflow ............................................................................................................................ 10

1.2 Power-On Sequence ................................................................................................................................................ 13

1.3 Fatal Error Code List............................................................................................................................................... 15

1.4 Status sheet ............................................. ..................................... ............................................................................ 20

1.4.1 Start method of Service Support Mode .................................................... 20

1.4.2 Description of Status sheet (Non-disclosed information to user)................................................................... 21

Chapter 2 Disassembly/Reassembly

2.1 O verview ................................................................................................................................................................. 24

2.1.1 Tools ............................................................................................................................................................... 24

2.1.2 Jigs .................................................................................................................................................................. 24

2.1.3 Standard Operation Time for servicing the product ....................................................................................... 25

2.1.4 Checks and Precautions before Disassembling .............................................................................................. 29

2.1.4.1 F actors which Affect th e Print Qu ality .................................................................................................. 29

2.1.4.2 F actors which Affect th e Safety of Servi ce Personnel such as Ink Leakage during Operation ............ 32

2.1.4.3 How to remove the CISS system ........................................................................................................... 34

2.1.4.4 Discharging procedure........................................................................................................................... 42

2.2 Common cautions when disassembling/reassembling the Product......................................................................... 43

2.3 D isassembly/Reassembly Procedures ..................................................................................................................... 45

2.3.1 Functional differences between models and component parts....................................................................... 45

2.3.2 Disassembly Flowchart................................................................................................................................... 47

2.3.2.1 Housing Part ................................................................. ......................................................................... 48

2.3.2.2 CISS System/Print Head Part ................................. ............................................................................... 49

2.3.2.3 Printer Mechanism Part ................................. ..................................... ................................................... 50

2.4 Detailed Disassembly/Reassembly Procedure for each Part/Unit........................................................................... 54

2.5 Routing FFCs/cables ............................................................................................................................................... 65

Chapter 3 Adjustment

3.1 Required Adjustments ............................................................................................................................................. 71

3.2 D etails of Adjustments ............................................................................................................................................ 78

3.2.1 PF/CR Timing Belt Tension Measurement .................................................................................................... 78

3.2.1.1 PF Timing Belt Tension Measurement.................................................................................................. 79

3.2.1.2 CR Timing Belt Tension Check............................................................................................................. 80

3.2.2 PG Adjustment ............................................................................................................................................... 81

3.2.2.1 PG Adjustment procedure...................................................................................................................... 81

3.2.2.2 Preparation ............................................................................................................................................. 82

3.2.2.3 PG adjustment procedure....................................................................................................................... 85

3.2.2.4 Checking the Platen Gap........................................................................................................................ 87

3.2.3 Touch Panel Adjustment ................................................................................................................................ 88

Chapter 4 Maintenance

4.1 Cleaning................................................................................................................................................................... 93

4.1.1 Cleaning the CR Unit ..................................................................................................................................... 93

4.1.2 Cleaning the Exterior Parts/inside of the printer ............................................................................................ 94

4.2 Lubrication .............................................................................................................................................................. 95

4.3 Lubrication Points and Instructions......................................................................................... ................................ 96

Confidential

Epson L1455 / ET-16500 Revision A

Chapter 5 Appendix

5.1 Connector Diagram ............................................................................................................................................... 100

5.2 P rotection for Transportation ................................................................................................................................ 101

5.2.1 Securing the CR Unit.................................................... ... ..................................... ........................................ 101

Confidential

CHAPTER 1

TROUBLESHOOTING

Confidential

Epson L1455 / ET-16500

 This flowchart is compiled based on the following contents.

• Our experience regarding the quality problem

• ESK’s repair data

• Printer Mechanism specification for L1455/ET-16500

 If the reason for the return is evident, first check the phenomenon user claims recurs,

then proceed to the troubleshooting.

What is returned reason?

Standby condition

Is printing operation

finished without error?

Start

Turn on the printer

(p 11)

(p 12)

Copy an image

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

(p 12)

ADF/Scanner

unit failure

Printer failure only

Yes

Does printer turn on the

power?

Is Power-on sequence

finished without error?

Print check pattern

Is printing operation

finished without trouble?

Is scanning operation

finished without

trouble?

Is ADF operation finished

without trouble?

Copy an image by ADF

ADF failure?

Finish

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.

Revision A

Figure 1-1. Troubleshooting Workflow (1)

Troubleshooting Troubleshooting Workflow 10

Confidential

Epson L1455 / ET-16500 Revision A

The power-on

sequence does not start (p 10)

No Power

[Presumable Cause]

• Power Supply Unit damage

• Main Board damage

• Panel Unit damage

[Major Troubleshooting]

• Power Supply Unit replacement

• Main Board replacement

• Panel Unit 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.

Please refer to " 1.3 Fatal Error

Code List (p15)"for

troubleshooting.

Fatal error

Error is indicated during power-on sequence (p 10)

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 cartridge replacement timing

[Major Troubleshooting]

• Replace Maintenance Box

• Paper Guide Lower Porous Pad replacement

• Maintenance counter reset (only Paper Guide Lower Porous Pad)

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 counter reaches ink end level.

[Major Occurrence Timing]

• Power-on timing

• Print start timing

• Print timing

• Cleaning timing

[Major Troubleshooting]

Refill ink and reset ink counter by panel.

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

Please refer to " Paper Jam

error".

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 scanner unit and remove the CR fixing tape.

Error is indicated during printing nozzle check pattern (p 10)

Paper Jam error

[Occurrence Condition]

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

[Major Occurrence Timing]

• Power-on timing

• Paper loading timing

• Paper eject timin g

• Duplex print timing

[Major Troubleshooting]

1 remove the jammed paper by opening

Scanner Unit or 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

• Float of Paper Guide Front Porous Pad

•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, s et

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

[NOTE]

This error occurs only for manual duplex print.

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

• PW Sensor 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)

Appendix Troubleshooting Workflow 11

Confidential

Epson L1455 / ET-16500 Revision A

Problems related to print result or during printing(p 10)

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

• Float of Paper Guide Front Porous Pad

• Narrow PG

• PE Lever damage

• PE Sensor damage

• PW Sensor damage

• Ink tank ventilation film gets wet

• Different kinds of ink mixture

[Major Troubleshooting]

• Driver / Panel re-setting

• CR Scale replacement

• Printhead cover cleaning

• Printhead cleaning

• Ink cartridge replacement

• Printhead replacement

• Rubber cleaning of Cap Unit of Ink system Assy

• Ink system Assy replacement

• Paper Guide Front Porous Pad re-installation

• PG readjustment

• Printer Mechanism replacement

• PE Lever replacement

• PE Sensor replacement

• PW Sensor replacement

• Ink tank Replacement

• Ink supply pathway replacement or cleaning

Poor Paper Loading

[Presumable Cause]

• Use of 3rd party media

• Edge guide mis-setting

• Foreign material

• Part 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

• Part re-installat ion

• PF Roller replacement

• Cassette Assy replacement

• Pickup Roller replacement

Abnormal Noise

[Presumable Cause]

• Foreign material

• Insufficient grease

• Gear damage

[Major Troubleshooting]

• Foreign material removal

• Lubrication of grease

• Gear replacement

Blank Printing

[Presumable Cause]

• Ink tank ventilation film gets wet

• Ink tube crumples

• Ink tube connection is incomplete

[Major Troubleshooting]

• Ink tank replacement

• Ink tube re-installation or replacement

Scanning cannot be performed

successfully (p 10)

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 (p 10)

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

• ADF Paper Support Assy damage

• Foreign material

• ADF Cover Assy damage

• Wear of EJ Roller

• ADF Sensors damage

[Major Troubleshooting]

• ADF Cover Assy replacement

• ADF Pad Assy replacement

• Scanner Glass cleaning

• ADF Paper Support Assy replacement

• Foreign material removal

• ADF Unit replacement

Figure 1-3. Troubleshooting Workflow (3)

Appendix Troubleshooting Workflow 12

Confidential

Epson L1455 / ET-16500 Revision A

1.2 Power-On Sequence

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

 Normal power-on sequence (See Table 1-1.)



Turning on the printer after turning it off without an error.

 Initial ink charge has finished and every cartridge has sufficient ink.  No paper on the paper path.  The Printhead is capped by the cap of the Ink System and the CR Lock is engaged normally.

Table 1-1. Normal Power-on Sequence

Operation

1. Printhead initialization

1-1.Initializes the Printhead.

2. Checking for waste ink overfl ow

2-1.Checks the waste ink counter if the waste ink overflow is occurring.

CR Unit/PF Roller

movement and position

CRUnit

APGLever CRLock

0130

0130 HP

3. Avoiding deadlock sequence

3-1.The CR Unit moves to the 0-digit side slowly and confirms it touches the Right Frame.

3-2.The CR Unit moves to the 80-digit side up to its home position.

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

4. Seeking the home position

4-1.The carriage moves to the 0-digit side slowly and confirms it touches the Right Frame.

4-2.By regarding the position where the CR Unit touches the Right Frame as the specified distance from the origin, the

home position is determined. Thereafter, the position of the CR Unit is monitored based on the information provided by the CR Encoder.

4-3.The CR Unit slowly moves to its home position.

5. PF initialization

5-1.The CR Unit moves slowly about 3 cm to the 130-digit side.

5-2.The PF Roller rotates counterclockwise quickly.

0130 HP

5-3.The CR Unit moves to ASF trigger ON => OFF positions.

5-4.The PF Motor rotates clockwise for approx. one second.

5-5.The PF Roller rotates clockwise for about one second.

5-6.The PE sensor detects if paper exists and the PF Motor rotates clockwise for approx. 0.5 second.

0130 HP

Appendix 13

Confidential

Epson L1455 / ET-16500 Revision A

0130 HP

1Prior to Step 4-1 Initializes the APG Lever.

2 Prior to Step 4-2

The CR Unit evacuates to the 130-digit side once, and the PF Roller rotates clockwise once, then the cap unit of the Ink System is lowered, and then the CR Unit touches the Right Frame once again for confirmation.

3Prior to Step 4-3

The CR Unit moves to its CR Lock Position (130-digit side), and the PF Roller rotates

counterclockwise to engage the CR Lock. Then the CR Unit touches the CR Lock for confirmation. 4 Prior to Step 5-5 Initializes the APG unit (set to PG1 position). 5Prior to Step 7-1 Measurement of the CR Motor

Table 1-1. Normal Power-on Sequence

CR Unit/PF Roller

movement and position

0130 HP

6. Low temperature operation sequence

6-1.The CR Unit returns its home position.

Operation

6-2.The CR Unit moves between around the switch lever and in front of the Left Frame two times.

7. PF measurement and PW sensor initialization

7-1. The CR Unit slightly moves to the 0-digit side.

7-2.The carriage moves to the VHCheck position (130-digit side) quickly and stops; meanwhile the voltage values

detected by the PW sensor at the specified three points are recorded. At the same time, the PF Motor rotates clockwise and measures the load.

7-3.The CR Unit detects the voltage of the PW sensor at the carriage stop position (the black area at the Paper Guide

Front).

7-4.The CR Unit returns near its home position. At the same time, the PF Motor rotates clockwise and measures the

load.

8. Detecting ink cartridge and initializing ink system

8-1.The CR Unit slowly returns to its home position.

8-2.To check the operation of the PIS Sens or and to detect ink, the CR Unit moves back and for th between th e CR Unit

and near the APG Lever for two times.

9. CR lock setting

9-1.The CR Unit moves to its home position.

0130 HP

9-2.The PF Roller rotates counterclockwise to lock the CR Unit with the CR Lock.

Note *1: The rotation directions of the PF Motor are as follows.

Clockwise: Paper is fed normally Counterclockwise: Paper is fed backward

*2: The conditions of the CR lock are as follows.

Red CR lock is set

White CR lock is released *3: If it cannot be initialized, the fatal error occurs. *4: Confirm that the CR lock is not get stuck in the gap of the carriage or any other parts preventing the carriage from moving. *5: Eject paper if any. *6: Executed when the detected temperature is under 5

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

*7: The empty suction operation may occur depending on situations.

The power-on sequence shown in Table 1-1 is the sequence for when the previous power-off is complete normally as indicated in the conditions. If the previous power-off ends abnormally, operations including initialization of APG and such are performed in the following steps.

0130 HP

Appendix 14

Confidential

Epson L1455 / ET-16500 Revision A

1.3 Fatal Error Code List

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

 Fatal error list

Table 1-2. Fatal Error List (Printer)

Error type

ADF/Scanner

Error

code

01H ADF PID excess speed error

02H ADF PID reverse e r ror

03H ADF PID lock error • ADF Encoder failure (contaminated/detached scale, Encoder Board

04H

05H ADF PID excess load error 06H ADF PID

09H ADF BS+ excess speed error

0AH ADF BS+ reverse error

0BH ADF BS+ lock error • ADF Encoder failure (contaminated/detached scale, Encoder Board

0DH ADF BS+ excess load error

0EH ADF BS+ driving time er ro r • Main Board failure

10H HP detection error

11H

12H

13H

14H Measurement failure error • Scanner drive mechanism was overloaded.

ADF PID acceleration lock detection error

Contact detection distance exceeded error

Opposite side contact detection distance exceeded error

Opposite side wrong contact detection distance error

Error name Possible cause

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

• Motor driver failure (Main Board failure)

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

• Paper jam

failure)

• ADF Motor failure

• Paper jam

• Cable disconnection

DRIVING TIME ERROR • Main Board failure

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

• Motor driver failure (Main Board failure)

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

• Paper jam

failure)

• ADF Motor failure

• ADF drive overload (paper jam/foreign object)

• Cable disconnection

• CIS Unit failure

• Scanner Housing failure

• Main Board failure

• CIS Unit failure

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

• 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)

• 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)

• Main Board failure

• Scanner FFC failure / Scanner FFC connection failure

• Scanner Motor failure / Scanner Motor connection failure

Appendix 15

Confidential

Epson L1455 / ET-16500 Revision A

Table 1-2. Fatal Error List (Printer)

Error type

ADF/Scanner

Printer

Error

code

20H LED light error

30H Option error • Main Board failure

36H Paper jam error

41H FB PID excess speed

42H FB PID reverse

43H FB PID lock • ADF Encoder failure (contaminated/detached scale, Encoder Board 44H FB PID acceleration lock

45H FB PID excess load

46H FB PID driving time • Main Board failure

49H FB BS+ excess speed

4AH FB BS+ reverse

4BH FB BS+ lock • ADF Encoder failure (contaminated/detached scale, Encoder Board

4DH FB BS+ excess load

4EH FB BS+ driving time • Main Board failure 51H Automatic judgment fatal error 1 52H Automatic judgment fatal error 2 53H Automatic judgment fatal error 3 54H Automatic judgment fatal error 4 55H Automatic judgment fatal error 5

60H HP error

67H APG target position acquisition error

68H Contact error at valve initialization 69H Contact error at I/S clutch operation

6BH PF runaway error

7FH Inspection mode error ---

8DH Factor error other than printer device

8EH Driver mismatch error An unsupported driver was used. 8FH EEPROM verify error (by command) ---

93H PE Sensor error

Error name Possible cause

• CIS Unit failure

• Main Board failure

• Paper jam

• Foreign object

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

• Motor driver failure (Main Board failure)

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

• Paper jam

failure)

• 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 (Main Board failure)

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

failure)

• ADF Motor failure

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

• Cable disconnection

---*

• Paper jam

• Foreign object

• Deformation of the Main Frame

• APG Motor failure

• APG Sensor failure

• Main Board failure

• Ink system failure

• Main Board failure

• PF Encoder failure

• Motor driver 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

Appendix 16

Confidential

Epson L1455 / ET-16500 Revision A

Table 1-2. Fatal Error List (Printer)

Error type

Printer

Error

code

97H

9AH Circuit error (include blowout of a fuse) 9BH Transistor temperature error 9CH X-Hot detect error (pre printing) 9DH X-Hot detect error (after flushing)

9EH Head temperature error 9FH No print inspection mode error ---

D1H ASF PID excess load error

D2H ASF PID excess speed error

D3H ASF PID reverse error

D4H ASF PID lock error

D6H ASF PID excess torque limitation error

D8H ASF load position reverse error

D9H ASF load position excess speed error

DAH ASF load position excess load error

DEH ASF PID driving time error DFH ASF loa d position driving time error

E1H CR PID excess load error

E2H CR PID excess speed error

E3H CR PID reverse error

Head drive circuit VBS over-voltage error

Error name Possible cause

• Head FFC failure

• Main Board failure

• Printhead failure

• Main Board failure

• 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

• 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

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

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

• Cable disconnection

• Main Board failure

• 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

Appendix 17

Confidential

Epson L1455 / ET-16500 Revision A

Table 1-2. Fatal Error List (Printer)

Error type

Printer

Error

code

E4H CR PID lock error

E5H CR PID speed fall error

E8H CR load position reverse error

E9H CR load position excess speed error

EAH CR load position excess load error

EBH APG driving time error • Main Board failure

ECH APG excess speed error

EEH CR PID driving time error EFH CR load position driving time error

F1H PF PID excess load error

F2H PF PID excess spee d error

F3H PF PID reverse error

F4H PF PID lock error

F6H PF PID excess torque limitation error ---

F8H PF load position reverse error

F9H PF load position excess speed error

Error name Possible cause

• 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

• 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

• APG Sensor failure

• APG Motor failure

• Tooth skip of APG drive gear

• Main Board 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

Appendix 18

Confidential

Epson L1455 / ET-16500 Revision A

Table 1-2. Fatal Error List (Printer)

Error type

Printer

Note "*": Not occurs except in manufacturing process.

Error

code

FAH PF load position excess load error

FEH PF PID driving time error FFH PF load position driving time error

Error name Possible cause

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

• PF Motor failure

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

• Cable disconnection

• Main Board failure

Appendix 19

Confidential

Epson L1455 / ET-16500 Revision A

Power

[3]

Moves up menu selection.

[Color]

Enter

[6]

Moves down menu selection.

Power on button

[6] button

[4] button

1.4 Status sheet

This section describes the Status sheet for this product.

 This product can print the three kind of status sheet, and you can confirm the following

information.

• C o nfiguration Status Sheet

• Supply Status Sheet

• Usage History Sheet

 This product has Non-disclosed information to user.

This information can be displayed on the Status sheet by starting the product with the Service Support Mode.

1.4.1 Start method of Service Support Mode

During in the Service Support Mode, operations such as menu selection can be done by pressing the following buttons on the panel.

Figure 1-4. Panel Operation in Service Support Mode

1. From a power off status, push the following button until the message is displayed on LCD.  L1455/ET-16500

2. Select “2.Status Sheet Print Mode” from the Service Support menu.

3. The product starts as usual.

4. Print the Status sheets.

Appendix Start method of Service Support Mode 20

Confidential

Epson L1455 / ET-16500 Revision A

1.4.2 Description of Status sheet (Non-disclosed information to user)

 Supply Status sheet

Table 1-3. Supply Status sheet (Non-disclosed information to user)

Item Content Item Content

Consumable information <Maintenance Box>

Maintenance Box residual quantity

Residual quantity information of the Maintenance Box

Appendix Description of Status sheet (Non-disclosed information to user) 21

Confidential

Epson L1455 / ET-16500 Revision A

 Usage History Sheet

Table 1-4. Usage History Sheet (Non-disclosed information to user)

Item Content Item Content

Number of Sheets Loaded

From Cassette 1 Number of shee ts loaded from 1st

cassette

From Paper Feed Slot Number of sheet loaded from paper

feed slot.

Number of sheets scanned

From ADF Number of sheets scanned from ADF

Unit.

Number of Replacement

Maintenance Box Number of replacement of

Maintenance Box.

From Cassette 2 Number of loaded from 2nd cassette

From Scanner Glass Number of sheets scanned from

Scanner Glass.

Appendix Description of Status sheet (Non-disclosed information to user) 22

Confidential

CHAPTER 2

DISASSEMBLY/REASSEMBLY

Confidential

Epson L1455/ET-16500 Revision A

2.1 Overview

This chapter describes procedures for disassembling the main parts/units of L1455/ET-16500. Unless otherwise specified, disassembled parts/units can be reassembled by reversing the disassembly procedure. See the cautions or tips for disassembly/reassembly described in "2.4 Detailed Disassembly/Reassembly Procedure for each Part/

Unit (p55)".

Read the " Safety Precautions (p3)" before disassembling and reassembling. When you have to remove units or parts that are not described in this chapter, see the exploded diagrams of SPI

(Service Parts Information).

2.1.1 Tools

Use only specified tools to avoid damaging the printer.

Name Availability EPSON Part Code

(+) Phillips screwdriver #1 O 1080530 (+) Phillips screwdriver #2 O --Flathead screwdriver O --Flathead Precision screwdriver #1 O --Tweezers O --Longnose pliers O --Nippers O --Teflon tape No.903UL 1 1706715 Tube clip 4 Commercially available Injector 4 Commercially available Containers 4 Commercially available

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

2: EPSON provides the tools listed with EPSON part code.

2.1.2 Jigs

Name Q’ty EPSON Part Code

Thickness gauge (1.6mm) 1 Commercially available Thickness gauge (1.42mm) 1 Commercially available Thickness gauge (1.52mm) 1 Commercially available Thickness gauge (1.72mm) 1 Commercially available Thickness gauge (1.82mm) 1 Commercially available

Disassembly/Reassembly Overview 24

Confidential

Epson L1455/ET-16500 Revision A

2.1.3 Standard Operation Time for servicing the product

The following are the standard operation time for servicing the product. Those are based on the MTTR result measured using a prototype. Perform servicing referring to this operation standard time.

The underlined parts/units are supplied as After Service Parts.

Table 2-1. Standard Operation Time for servicing the product

Time

Parts/Unit

Replacement

USB Cover 0:44 --- 0:44 Pickup Holder 1st 0:23 --- 0:23 Pickup Roller 1st Pickup Holder 2nd 0:10 --- 0:10 Pickup Roller 2nd Paper Stopper Assy 2nd 0:50 --- 0:50 Duplex Unit Cover Assy 0:50 4:43 5:33

MSF Unit 1:01 4:43 5:44 MSF Stopper Belt 1:27 --- 1:27

Assist Roller Holder Assy 1:04 4:43 5:47 Decoration Plate 0:45 --- 0:45 Ink Tube Shield 0:57 --- 0 :5 7 Panel Unit Speaker Cover 2:12 --- 2:12 Speaker 2:12 --- 2:12 Lower Case ADF Pad Assy Document Pad MSF Cover ADF Cover Assy

LD Shaft 0:42 --- 0:42

ADF LD Assy ADF/Scanner Unit 9:28 --- 9:28

ADF Unit

ADF Cover Right ADF Decoration Plate Front ADF Decoration Plate Rear ADF Cover Front ADF Cover Rear ADF Paper Support Cover 17:13 --- 17:13 Paper Support Encoder Sensor 17:45 --- 17:45 ADF Paper Support Assy ADF Motor Unit 23:59 0:46 24:45 ADF Frame Base 23:59 --- 23:59

Scanner Unit

Scanner Housing Upper Assy 17:42 --- 17:42 Scanner FFC Cover 18:43 --- 18:43

0:53 --- 0:53

0:23 --- 0:23

1:50 0:26 2:16

1:14 --- --0:19 --- 0:19 0:14 --- 0:14 0:06 --- 0:06 0:31 --- 0:31

1:14 --- 1:14

14:42 0:46 15:28 15:03 --- 15:03 14:55 --- 14:55 14:52 --- 14:52 17:48 --- 17:48 16:52 --- 16:52

19:00 --- 19:00

14:42 0:58 15:40

Adjustment/

Inspection

Total

Disassembly/Reassembly Overview 25

Confidential

Epson L1455/ET-16500 Revision A

Table 2-1. Standard Operation Time for servicing the product

Time

Parts/Unit

Replacement

Scanner Motor Assy 19:18 0:58 20:16

CIS Module 20:22 --- 20:22 Hinge Left 9:52 --- 9:52 Hinge Right 9:52 --- 9:52 Housing Upper Assy 18:03 --- 18:03

Duplex Unit Cover Open Sensor 18:27 --- 18:27 Housing Upper

Housing Front Assy 20:44 --- 20:44

Cover Open Sensor Housing Front

Main Board Unit

Cable Support Plate 28:00 --- 28:00 Wireless LAN Module Shield Plate Upper (w/Wireless LAN Module) 28:31 --- 28:31 Main Board (read OK) Main Board (read NG)

Shield Plate Lower (w/Cable Support Plate) 30:02 --- 30:02 Stacker Assy FAX Unit

FAX Shield Plate /FAX Connector Cover 22:09 --- 2 2:09

FAX Board Power Supply Unit Clamp Tube Ink system Assy Gear Cover 22:34 --- 22:34 Holder Board Printhead Cover 21:15 --- 21:15 Printhead Pickup Assy 1st Relay Board FFC Guide 21:28 --- 21:28 Holder Cam Assy Waste Ink Tray Cover 22:06 --- 22:06 Relay Board Assy

Relay Board CSIC Terminal 23:11 --- 23:11

Relay Board 23:04 --- 23:04

Relay Board Holder 23:27 --- 23:27 Waste Ink Tray Holder 23:32 --- 23:32 CR Scale CR Driven Pulley Assy 22:32 1:00 23:32 APG Driven Shaft Support Plate 22:33 --- 22:33 APG Unit Support Plate 21:12 --- 21:12 APG Driven Shaft 25:24 --- 25:24

18:48 --- 18:48

21:05 --- 21:05 21:27 --- 21:27 27:28 --- 27:28

28:16 --- 28:16

30:02 2:25 32:27 30:02 17:32 47:34

20:51 --- 20:51 21:22 --- 21:22

22:09 --- 22:09 22:01 3:26 25:27 20:59 --- 20:59 22:10 --- 22:10

21:44 --- 21:44

23:45 23:44 47:29 23:57 --- 23:57

22:05 --- 22:05

22:48 --- 22:48

21:38 --- 21:38

Adjustment/

Inspection

Total

Disassembly/Reassembly Overview 26

Confidential

Epson L1455/ET-16500 Revision A

Table 2-1. Standard Operation Time for servicing the product

Time

Parts/Unit

Replacement

Paper Guide Upper Assy 27:13 8:15 35:28 PF Sensor 28:06 --- 28:06 CR Guide Frame Assy (w/CR Unit) 33:42 16:24 50:06 Front Frame 35:04 7:45 42:49 PG Adjustment Cam Right 34:14 5:40 39:54 CR Scale Support Plate 34:10 --- 34:10 PG Adjustment Cam Left 34:44 5:40 40:24 Star Wheel Assy

Star Wheel Frame

Star Wheel Holder Frame Base 2nd Assy

ASF Motor Assy 47:22 0:35 47:57

Spur Gear 16 47:26 --- 47:26

Pickup Assy 2nd 49:10 --- 49:10 Paper Stopper Assy 1st 46:58 --- 46:58 One Way Clutch Gear 39:22 --- 39:22 Main Frame Unit

PF Motor 48:16 0:26 48:42

CR Motor 47:54 0:41 48:35

PE Lever 52:00 0:38 52:38

Paper Guide Middle 52:17 --- 52:17

PE Sensor 52:32 0:38 53:10 Paper Guide Lower Porous Pad APG Unit 48:05 --- 48:05 Tank Cap Adapter Cover Ink Tank Cover Ink End Sensor Lumiror 0:34 --- 0:34 Ink Tank Assy

Ink Tank Housing Lower

Ink Tank Housing Upper

Ink End Sensor Board

Ink Tank Pourous Pad

Ink End Sensor Board Holder

Ink Tank (Black)

Ink Tank (Color)x3

Ink Supply Tube Joint Ink Adapter Tube Assy

Adapter (Black)

Adapter (Color)x3

Tube Guide Sheet

36:46 1:37 38:23 37:06 1:37 38:43 37:06 1:37 38:43 46:08 4:02 50:10

47:19 19:37 66:56

47:24 0:13 47:37

0:08 --- 0:08 0:18 --- 0:18 0:06 --- 0:06

6:01 --- 6:01 6:46 --- 6:46 7:42 --- 7:42 8:17 --- 8:17 7:52 --- 7:52 8:52 --- 8:52 9:55 --- 9:55 9:55 --- 9:55 9:03 --- 9:03

7:51 --- 7:51 12:19 --- 12:19 12:32 --- 12:32 12:58 --- 12:58 12:29 --- 12:29

Adjustment/

Inspection

Total

Disassembly/Reassembly Overview 27

Confidential

Epson L1455/ET-16500 Revision A

Table 2-1. Standard Operation Time for servicing the product

Time

Parts/Unit

Replacement

Ink Adapter Tube (Black1) 12:29 --- 12:29 Ink Adapter Tube (Black2) Ink Adapter Tube (Color1) Ink Adapter Tube (Color2) 13:39 --- 13:39 Joint (Black) 12:32 --- 12:32 Joint (Color) 12:39 --- 12:39 Tube Clamp(x4) Tube Guide 12:44 --- 12:44 Tube Guide Cover

12:59 --- 12:59 12:54 --- 12:54

13:09 --- 13:09

12:23 --- 12:23

Adjustment/

Inspection

Total

Disassembly/Reassembly Overview 28

Confidential

Epson L1455/ET-16500 Revision A

Ventilation film

Air hole

Cyan ink

Can’t judge by visual

evaluation

Ventilation film

2.1.4 Checks and Precautions before Disassembling

2.1.4.1 Factors which Affect the Print Quality

VENTILATION FILM GETS WET

The ventilation film is under the sealing film of the ink tank unit. The atmosphere in the ink tank is vented to the outside through this ventilation film in order to keep the ink supply to printer head stably. If the ventilation film gets wet, the atmosphere in the ink tank can't be vented to the outside and maybe have a trouble for printing.

Figure 2-1. Ventilation film

 How to check the ventilation film gets wet

 If the ventilation gets wet, the tank should be replaced. Because we can’t judge the

ventilation film wet by visual evaluation, we can check the air chamber where the ink reach.

Disassembly/Reassembly Overview 29

Confidential

Epson L1455/ET-16500 Revision A

Ink Tank Assy

Ventilation Hole

Ink Tank Assy

If the ink reach the following air chamber (red area), the ventilation film is likely to be wet, so we recommend that you disassemble the Ink Tank and confirm it.

Figure 2-2. Ventilation film gets wet

HOW TO PLACE THE INK TANK ASSY WHEN DISASSEMBLING/REASSEMBLING

In order to prevent the ventilation film from getting wet, make sure to place the Ink Supply Tank Assy as below after removing it.

Figure 2-3. How to Place the Ink Tank Assy

Disassembly/Reassembly Overview 30

Confidential

+ 72 hidden pages