L655 L656 Manual de Servicio

SERVICE MANUAL

C olor lor I nkje nkj et Pr i nte nter

Epson ET-4550/3600 Epson L655/656/605/606

CONFIDENTIAL SEMF15-002

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, mechanical, photocopying, recording, or otherwise, 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 infor med 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 herein are for identification identification purpose only and may be trademarks or registered registered trademarks of their respective owners. EPSON disclaims any and all rights in those marks.

Copyright  2015

SEIKO EPSON CORPORATION Printer CS Quality Assurance Department

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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, mechanical, photocopying, recording, or otherwise, 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 infor med 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 herein are for identification identification purpose only and may be trademarks or registered registered trademarks of their respective owners. EPSON disclaims any and all rights in those marks.

Copyright  2015

SEIKO EPSON CORPORATION Printer CS Quality Assurance Department

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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 disconn disconnect ect the product product from the the power source source and peripher peripheral al devices devices when servicing servicing the product product or performing maintenance. 2. When performi performing ng works describe described d in this manual, manual, do not connect connect to a power source source until instructed instructed to do so. 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 wear protective protective goggles goggles for disassemb disassembly ly and reassembly reassembly to protect protect your your eyes from from ink in working. working. If any ink gets in your eyes, wash your eyes with clean water and consult a doctor immediately. 2. When using using compressed compressed air products; products; such such as air duster, duster, for cleaning cleaning during during repair and mainten maintenance, ance, 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 Repairs on Epson Epson product product should should be performed performed only only by an Epson Epson certified certified repair repair technicia technician. n. 2. No work should should be performed performed on this produc productt by persons unfamili unfamiliar ar with basic safety safety knowledge knowledge require required d for electrician. 3. The power power rating of of this product product is indicated indicated on the serial serial number/r number/rating ating plate. plate. Never Never connect connect this product product to the power source whose voltages is different from the rated voltage. 4. Replace Replace malfunction malfunctioning ing component componentss only with those those components components provided provided or approved approved by Epson; Epson; introduction of second-source ICs or other non-approved components may damage the product and void any applicable Epson warranty. 5. The capacitors capacitors on the the Main Board Board may be electrically electrically charged charged right right after the the power turns turns off or after driving 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 discharge the capacitors before starting disassembly/ disassembly/ reassembly. 6. To prevent prevent the circuit circuit boards from from short-circu short-circuiting, iting, be careful careful about about the following following when handlin handling g 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.

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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 manual. 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.

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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.

CH APTER 1. TROUBLE SHOOTI NG Describes the step-by-step procedures for the troubleshooting.

CH APTE R 2. DI SASSE MBLY / RE ASSE MBLY Describes the disassembly/reassembly procedures for main parts/units of the product, and provides the standard operation time for servicing the product.

CH APTE R 3. ADJ USTME NT Describes the required adjustments for servicing the product.

CHAPTER 4. MAI NTENANCE Describes maintenance items and procedures for servicing the product.

CHAPTE R 5. APPENDI X 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 t o all symbols when they are used, and always read explanation thoroughly and follow the i nstructions. 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 i ndicated above are used to show additional information for disassembly/reassembly. For the details on those symbols, see "2.3 Disassembly/Reassembly Procedures (p37)".

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Revision Status Revision

Date of Issue

A

May 19, 2015

First Release

B

October 19, 2015

 Chapter 2

C

May 9, 2016

Description



"2.1.5.1 Factors which Affect the Print Quality (p28)"



"2.1.5.2 Factors which Affect the Safety of Service Personnel such as Ink Leakage during Operation (p29)"

 Chapter 1  1.1.1 Touble Shooting Workflow                 

D

June 15, 2016

Deleted “Initial Ink Charge” (p11) Added “Poor Printing” “Blank Printing” (p27) Chapter2 2.1.5 Checks and Precautions before Disassembling 2.1.5.1 Factors Which Affect the Print Quality(P27) 2.1.5.2 Factors Which Affect the Safety of Service Person such as Ink Leakage during Operation(P30) 2.1.5.4 Discharging Procedure (P34) 2.3.2 Disassembly Flowchart CISS System(P40) 2.4 Detail Disassembly/Reassembly Procedure for each Part/Unit Ink Tank Housing Upper(P50) Ink End Sensor Board Holder(P50) Ink End Sensor Board(P50) Charpt3 Required Adjustment List(P58) 3.3.1 Checking the Platen Gap(P64)

 Cover 

The New Model Name(ET-3600,L605/606) is Added in the Service Manual Cover  Chapter1  1.3 Fatal Error Code List The Fatal Error Code for Hexadecimal Number is Added (P14,15,16,17) 

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E pson E T-4550, L655/656

Revision B

Contents Chapter 1 Troubleshooting 1.1 Troubleshooting....................................................................................................................................................... 10 1.1.1 Troubleshooting Workflow ............................................................................................................................ 10 1.2 Power-On Sequence ................................................................................................................................................ 12 1.3 Fatal Error Code List ............................................................................................................................................... 14

Chapter 2 Disassembly/Reassembly 2.1 Overview ................................................................................................................................................................. 2.1.1 Tools ............................................................................................................................................................... 2.1.2 Jigs .................................................................................................................................................................. 2.1.3 Locations of the Parts/Units ........................................................................................................................... 2.1.4 Standard Operation Time for servicing the product ....................................................................................... 2.1.5 Checks and Precautions before Disassembling .............................................................................................. 2.1.5.1 Factors which Affect the Print Quality .................................................................................................. 2.1.5.2 Factors which Affect the Safety of Service Personnel such as Ink Leakage during Operation ............

19 19 19 20 24 27 27 28

2.2 Common cautions when disassembling/reassembling the Product ......................................................................... 34 2.3 Disassembly/Reassembly Procedures ..................................................................................................................... 36 2.3.1 Functional differences between models and component parts ....................................................................... 36 2.3.2 Disassembly Flowchart................................................................................................................................... 37 2.4 Detailed Disassembly/Reassembly Procedure for each Part/Unit........................................................................... 44 2.5 Routing FFCs/cables ............................................................................................................................................... 50

Chapter 3 Adjustment 3.1 Required Adjustments ............................................................................................................................................. 54 3.2 Adjustment Program................................................................................................................................................ 3.2.1 Operating Environment .................................................................................................................................. 3.2.2 Details of the Adjustment Program ................................................................................................................ 3.2.2.1 CR Motor Heat Protection Control / PF Motor Heat Protection Control .............................................. 3.2.2.2 Scanner Motor Heat Protection.............................................................................................................. 3.2.2.3 MAC Address Setting ............................................................................................................................

58 58 58 59 59 60

3.3 Details of Adjustments ............................................................................................................................................ 3.3.1 Checking the Platen Gap ................................................................................................................................ 3.3.1.1 Preparation ............................................................................................................................................. 3.3.1.2 Confirmation procedure .........................................................................................................................

61 61 61 63

Chapter 4 Maintenance 4.1 Cleaning................................................................................................................................................................... 4.1.1 Cleaning the nozzle plate section of the printhead ......................................................................................... 4.1.2 Cleaning the CR Unit ..................................................................................................................................... 4.1.3 Cleaning the Exterior Parts/inside of the printer ............................................................................................

65 65 66 67

4.2 Lubrication .............................................................................................................................................................. 68 4.3 Lubrication Points and Instructions......................................................................................................................... 69

Chapter 5 A ppendix 5.1 Connector Diagram ................................................................................................................................................. 75 5.2 Protection for Transportation .................................................................................................................................. 76 5.2.1 Securing the CR Unit...................................................................................................................................... 76

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Revision B

5.2.2 Securing the Stacker Assy ............................................................................................................................ 77

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CHAPTER 1

TROUBLESHOOTING

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Revision B

E pson ET-4550, L655/656

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 • ESK’s repair data • Printer Mechanism specification for ET-4550, L655/656



If the reason for the return is evident, first check the phenomenon user claims recurs, then proceed to the troubleshooting.

Start What is returned reason? Turn on the printer

Printer failure only

ADF/Scanner unit failure Copy an image

Does printer turn on the power?

No

1 (p 11)

Yes

Is scanning operation finished without trouble?

No

5 (p 11)

Is Power-on sequence finished without error?

No

Yes

2 (p 11)

Yes

ADF failure?

No

Standby condition Yes Print check pattern

Is printing operation finished without error?

Copy an image by ADF

No

3

Is ADF operation finished without trouble?

(p 11)

Yes

Yes

Is printing operation finished without trouble? Yes

No

No

6 (p 11)

Finish*

4 (p 11)

*:

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

Figure 1-1. Troubleshooting Workflow (1)

Troubleshooting

Troubleshooting Workflow

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Revision B

1.2 Power-On Sequence This section describes the power-on sequences for this product. The preconditions are as follows. 

Power-on sequence (See Table 1-1.)     

Turning on the printer after turning it off without an error. The power was turned off normally at the previous shut down. Initial ink charge has finished and every ink tank 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

CR Unit/PF Roller movement and position*2

1. Printhead initialization*3

 

1-1.Initializes the Printhead.  

2. Maintenance error detection

























2-1.Checks the tube maintenance counter for ink tube errors. 2-2.Checks the waste ink counter if the waste ink overflow is occurring.

3. Releasing the CR lock 3-1.The PF Motor rotates clockwise, and releases the CR lock.

4. Seeking the home position 4-1.The CR Unit 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 Sensor.

E pson E T-4550, L655/656

Revision B

1.2 Power-On Sequence This section describes the power-on sequences for this product. The preconditions are as follows. 

Power-on sequence (See Table 1-1.)     

Turning on the printer after turning it off without an error. The power was turned off normally at the previous shut down. Initial ink charge has finished and every ink tank 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

CR Unit/PF Roller movement and position*2

1. Printhead initialization*3

 

1-1.Initializes the Printhead.  

2. Maintenance error detection

























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







4-4.The PF Roller rotates clockwise for approximately 1 second.













2-1.Checks the tube maintenance counter for ink tube errors. 2-2.Checks the waste ink counter if the waste ink overflow is occurring.

3. Releasing the CR lock 3-1.The PF Motor rotates clockwise, and releases the CR lock.

4. Seeking the home position 4-1.The CR Unit 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 Sensor.

5. Low temperature operation sequence*4 5-1.The CR Unit moves between around the switch lever and in front of the Left Frame two times.

Troubleshooting

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Revision B Table 1-1. Normal Power-on Sequence Operation*1

6. Adjustment of CR acceleration delay

CR Unit/PF Roller movement and position*2 

















7-2.The CR Unit slowly moves to its home position, and then moves until it touches the Right Frame again.







7-3.The CR Motor carries out the measurement drive, and the measured value is recorded in the EEPROM.







7-4.The CR Unit slowly moves to its home position







8. Ink detection and initializing the Ink System*







6-1.The CR Unit moves between around the switch lever and in front of the Left Frame two times. 6-2.The measured CR acceleration delay time is recorded in the EEPROM.

7. CR measurement 7-1.The CR Unit moves until it touches the Right Frame.

8-1.The CR Unit moves slowly until it touches the Right Frame, and then moves back to its home position.

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: Executed when the detected temperature is under 5 oC (41oF) by the thermistor on the Printhead. *5: The empty suction operation may occur depending on situations.

Troubleshooting

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Revision B

1.3 Fatal Error Code List This section describes the fatal error code and the possible cause for this product. Table 1-2. Fatal Error List Error type

Error code 0x01 (100001) 0x02 (100002) 0x03 (100003) 0x04 (100004) 0x05 (100005) 0x06 (100006) 0x09 (100009) 0x0A (100010) 0x0B (100011)

Error name

ADF PID excess speed error

Possible cause • ADF Encoder failure (contaminated/detached scale, Encoder Board failure) • Motor driver failure (Main Board failure)

ADF PID reverse error

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

ADF PID lock error

ADF PID acceleration lock error

• ADF Encoder failure (contaminated/detached scale, Encoder Board failure) • Scanner Motor failure • Paper jam

ADF PID excess load error

• Cable disconnection

ADF PID driving time error

• Main Board failure

ADF BS+ excess speed error

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

ADF BS+ reverse error

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

ADF BS+ lock error

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

0x0D ADF/Scanner

(100013) 0x0E (100014)

ADF BS+ excess load error

• Paper jam • Cable disconnection

ADF BS+ driving time error

• Main Board failure • CIS Unit failure • Scanner Housing failure

0x10 (100016)

HP detection failure

• Main Board failure • Insufficient grease • Foreign object • FFC for CIS failure / FFC for CIS connection failure

0x11 (100017) 0x12 (100018) 0x13 (100019)

Contact detection distance exceeded Opposite side contact detection distance exceeded error

• CIS Unit failure • Scanner Housing failure (Including wrong attachment of the origin mark) • Main Board failure • FFC for CIS failure / FFC for CIS connection failure

Wrong contact detection distance error

• Motor failure • Scanner drive mechanism was overloaded.

0x14 (100020)

• Insufficient grease Measurement error

• Foreign object • Lack of gears • Deformation of the shaft

0x20 (100032) 0x30 (100048)

Troubleshooting

LED light failure

Option error

• CIS Unit failure • Main Board failure • Main Board failure

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Revision B Table 1-2. Fatal Error List

Error type

Error code

Error name

Possible cause • Paper jam

0x36 (100054)

Paper jam error

• Foreign object • Loading/ejecting papers out of the standard range or curled papers • Using long papers (Legal or longer)

0x41 (100065) 0x42 (100066) 0x43 (100067) 0x44 (100068) 0x45 (100069) 0x46 (100070) 0x49 (100073)

FB PID excess speed error


FB PID reverse error

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

FB PID lock error

FB PID acceleration lock error

• ADF Encoder failure (contaminated/detached scale, Encoder Board failure) • Scanner Motor failure • ADF drive mechanism overload (assembling failure, foreign object, lubrication failure)

FB PID excess load error

• Cable disconnection

FB PID driving time error


FB BS+ excess speed error


ADF/Scanner 0x4A (100074) 0x4B (100075)

FB BS+ reverse error

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

FB BS+ lock error

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

0x4D (100077)

FB BS+ excess load error

• ADF drive mechanism overload (assembling failure, foreign object, lubrication failure) • Cable disconnection

0x4E (100078) 0x51 (100081) 0x52 (100082) 0x53 (100083) 0x54 (100084) 0x55 (100085)

FB BS+ driving time error


Auto judge Fatal Error 1


---*



Auto judge Fatal Error 5 • Carriage overload error (paper jam/foreign object) • Deformation of the Main Frame • Ink system failure

0x60 (000096)

Home position

• CR Motor failure • Deformation of the Front Frame • CR Encoder failure (contaminated/detached scale, Encoder Board failure)

Printer

• Cable disconnection 0x68 (000104) 0x69 (000105)

Troubleshooting

Valve initialization timing contact detection error I/S clutch action timing contact detection error

• Ink system failure • Main Board failure

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Error type

Error code 0x6B (000107) 0x7F (000111) 0x8D (000141) 0x8E (000142) 0x8F (000143) 0x93 (000147) 0x97 (000151) 0x9A (000154)

Error name

PF runaway error

Possible cause • PF Encoder failure (contaminated/detached scale, Encoder Board failure) • Motor driver failure

---*

Inspection mode timing error

Factor error other than printer device

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.

Driver mismatch error

An unsupported driver was used

---*

EEPROM verify error (by command)

PE Sensor error

Head drive circuit excessive voltage error

• PE Sensor failure • Main Board failure • Head FFC failure • Main Board failure

Circuit error (include blowout of a fuse) • Main Board failure

0x9B (000155) 0x9C (000156) 0x9D (000157) 0x9E (000158) Printer

0x9F (000159)

0xE1 (000225)

Transistor temperature error

X-Hot detect error (pre printing)

X-Hot detect error (after flushing)

• Printhead failure • Main Board failure

Head temperature error

Printing inspection less mode error

This error occurs if the printing or manual cleaning are performed in Printing inspection less mode. • CR Encoder failure (contaminated/detached scale, Encoder Board failure)

CR PID excess load error

• CR Motor failure • Carriage overload error (paper jam/foreign object) • Cable disconnection

0xE2 (000226)

• CR Encoder failure (contaminated/detached scale, Encoder Board failure) CR PID excess speed error

• Motor driver failure (Main Board failure) • Slipping teeth of the CR Timing Belt • Improper tension of the CR Timing Belt

0xE3 (000227)

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

• Slipping teeth of the CR Timing Belt • Improper tension of the CR Timing Belt • Carriage overload error (paper jam/foreign object)

0xE4 (000228)

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

• CR Motor failure • Carriage overload error (paper jam/foreign object) • Cable disconnection • CR Encoder failure (contaminated/detached scale, Encoder Board failure)

0xE5 (000229)

CR PID speed fall error

• Motor driver failure (Main Board failure) • Slipping teeth of the CR Timing Belt • Improper tension of the CR Timing Belt • Carriage overload error (paper jam/foreign object)

Troubleshooting

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Error type

Error code

0xE8 (000232)

Error name

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

CR load position reverse error

• Slipping teeth of the CR Timing Belt • Improper tension of the CR Timing Belt • Carriage overload error (paper jam/foreign object)

0xE9 (000233)

• CR Encoder failure (contaminated/detached scale, Encoder Board failure) CR load position excess speed error

• Motor driver failure (Main Board failure) • Slipping teeth of the CR Timing Belt • Improper tension of the CR Timing Belt

0xEA (000234)

• CR Encoder failure (contaminated/detached scale, Encoder Board failure) CR load position excess load error

• CR Motor failure • Carriage overload error (paper jam/foreign object) • Cable disconnection

0xEE (000238)

CR PID driving time error • Main Board failure

0xEF (000239)

0xF1 (000241)

CR load position excess driving time error • PF Encoder failure (contaminated/detached scale, Encoder Board failure) PF PID excess load error

• PF Motor failure • PF drive mechanism overload (paper jam/foreign object) • Cable disconnection

0xF2 Printer

(000242)

PF PID excess speed error

• PF Encoder failure (contaminated/detached scale, Encoder Board failure) • Motor driver failure (Main Board failure) • Slipping gears have occurred around the PF Motor gears.

0xF3 (000243)

PF PID reverse error

• PF Encoder failure (contaminated/detached scale, Encoder Board failure) • Slipping gears have occurred around the PF Motor gears. • Paper jam

0xF4 (000244)

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


0xF8 (000248)

0xF9 (000249)

PF load position reverse error

• PF Encoder failure (contaminated/detached scale, Encoder Board failure) • Slipping gears have occurred around the PF Motor gears.

PF load position reverse error

• PF Encoder failure (contaminated/detached scale, Encoder Board failure) • Motor driver failure (Main Board failure) • Slipping gears have occurred around the PF Motor gears.

0xFA (000250)

• PF Encoder failure (contaminated/detached scale, Encoder Board failure) PF load position excess load error


0xFE (000254)

PF PID driving time error • Main Board failure

0xFF (000255)

PF load position excess driving time error

202620

WiFi error

WiFi board failure

205102

Card board error

Card board failure

System Error

Troubleshooting

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E pson E T-4550, L655/656 Note "*":

Revision B

Not occurs except in manufacturing process

Troubleshooting

18 Confidential

CHAPTER 2

DISASSEMBLY/REASSEMBLY

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E pson E T-4550, L655/656

Revision B

2.1 Overview This chapter describes procedures for disassembling the main parts/units of ET-4550, L655/656. 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 (p45)". 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

---

Q’ty

EPSON Part Code

Thickness gauge (1.48mm)

1

Commercially available

Thickness gauge (1.76mm)

1


Teflon tape (thickness: 0.08 mm)

1


Tube clip

4


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

Disassembly/Reassembly

Overview

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Revision B

2.1.3 Locations of the Parts/Units This section shows the locations of the main parts/units of ET-4550, L655/656. The parts/units which can not be seen in the following pictures are indicated in dotted lines ( ).



Exterior parts 1

Front

Right

7

6

8

2 9 5

4

3

Rear

Left

13 12

No.

Name

No.

11

10

Name

1

ADF Document Support (p39)

8

Ink Tank Unit (p39)

2

ADF Unit (p40)

9

Scanner Unit (p40)

3

Stacker Assy (p39)

10

FAX Filter Assy (p42)*

4

Panel Unit (p39)

11

Duplex Unit (p37)

5

Cassette Assy (p37)

12

Waste Ink Pad Assy (p39)

6

ADF LD Cover Assy (p39)

13

Hinge (p39)

7

ADF Pad Assy (p40)

Figure 2-1. Exterior Parts Note "*":

The FAX Filter Assy is mounted only on models for some country/region.


Overview

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Revision B

Printer mechanism

1

2

3

5

No.

4

Name

No.

Name

1

PE Sensor Lever Assy (p41)

4

Front Frame (p41)

2

Printhead (p39)

5

PF Roller (p43)

3

CR Unit (p43)

Figure 2-2. Printer Mechanism: Front

1 2

3 5

4

No.

Name

No.

Name

1

CR Scale & Spring (p41)

4

CR Encoder Sensor (p43)

2

CR Timing Belt (p43)

5

PW Sensor (p43)

3

Holder Board (p39)

Figure 2-3. Printer Mechanism: Right


Overview

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Revision B

1

2

3

6

No.

4

5

Name

No.

Name

1

Main Board Assy (p41)

4

EJ Roller Gear (p41)

2

Panel FFC (p39)

5

PF Scale (p41)

3

Wireless LAN Module (p41)

6

PF Encoder (p41)

Figure 2-4. Printer Mechanism: Left

1

8

No.

7

Name

2

3

6

4

5

No.

Name

1

Head FFC (p39)

5

Paper Guide Upper Assy (p41)

2

Tube Guide (p39)

6

Main Frame Assy (p41)

3

Ink End Sensor FFC (p41)

7

Holder Cam Assy (p41)

4

Star Wheel Holder Assy (p41)

8

CR Motor (p43)

Figure 2-5. Printer Mechanism: Rear


Overview

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Revision B

Ink Tank Unit

1

2

7

No.

6

3

4

5

Name

No.

Name

1

Tube Guide Sheet (p44)

5

Tube Lock (p44)

2

Adapter(Bk) (p44), Adapter(C/M/Y) (p44)

6

Adapter Cover (p44)

3

Ink Supply Adapter Tube Assy (p44)

7

Tube Clamp (x3) (p44)

4

Joint (p44)

Figure 2-6. Ink Tank Unit (1)

1

Front

4

3

No.

Name

Rear

6

5

7

8

2

No.

Name

1

Ink Tank Cover (p39)

5

Ink Supply Tank (C/M/Y) (p44)

2

Ink Tank Housing Upper (p44)

6

Ink End Sensor Assy (p44)

3

Cap Tank (p44)

7

Ink Supply Tank (Bk) (p44)

4

Ink Tank Housing Lower (p44)

8

Ink Supply Tank Tube Assy (p44)

Figure 2-7. Ink Tank Unit (2)


Overview

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Revision B

2.1.4 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 of ET-4550, L655/656 that has the most functions among these product series. For ET-4550, L655/656 the standard operation time differs slightly due to the differences in structure, however, 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

Adjustment/ Inspection

Total

0:45

0:15

1:00

Panel Board

2:02

0:15

2:17

Panel Buttons

2:33

---

2:33

LCD Unit

2:25

0:15

2:40

Panel Housing Assy

2:25

---

2:25

Waste Ink Pad Assy

0:37

0:12

0:49

Pickup Roller Assy

0:11

---

0:11

Adapter Cover

0:09

---

0:09

Holder Board

0:25

---

0:25

Printhead

1:38

13:06

14:44

Printhead Grounding Plate

2:12

---

2:12

Head FFC

3:29

---

3:29

Paper Stopper Assy

0:43

---

0:43

ADF LD Cover Assy

0:09

---

0:09

Gear Cover

0:52

---

0:52

ADF Document Support

0:19

---

0:19

Spur Gear 25.8/20.4, Combination Gear 24.9.6

1:00

---

1:00

Bevel Gear Shaft 10.4

0:58

---

0:58

Document Mat

0:13

---

0:13

Stacker Assy

0:08

---

0:08

Ink Tank Cover

0:08

---

0:08

Ink End Sensor Lumirror

0:36

---

0:36

Ink Tank Unit

3:04

---

3:04

Ink Tank Housing Lower

3:45

---

3:45

Cap Tank

0:34

---

0:34

Ink Tank Housing Upper

4:27

---

4:27

Ink End Sensor Assy

5:23

---

5:23

Ink Supply Tank (Bk, C/M/Y)

8:42

---

8:42

Ink Supply Tank Tube Assy

8:43

---

8:43

Rail Cassette

3:47

---

3:47

Tube Clamp (x3)

1:06

---

1:06

Tube Lock

0:28

---

0:28

Joint

0:12

---

0:12

Adapter (Bk, C/M/Y)

2:10

---

2:10

Tube Guide Sheet

1:58

---

1:58

Panel Unit


Overview

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E pson E T-4550, L655/656

Revision B Table 2-1. Standard Operation Time for servicing the product Time Parts/Unit Replacement


Total

Ink Supply Adapter Tube Assy

5:48

---

5:48

Housing Upper

1:51

---

1:51

Speaker

0:52

---

0:52

Tube Guide

3:07

---

3:07

Panel FFC

2:36

---

2:36

ADF/Scanner Unit

3:03

---

3:03

ADF Unit

3:41

---

3:41

ADF Hinge Holder

4:02

---

4:02

ADF Hinge Right

4:09

---

4:09

ADF Hinge Left

3:53

---

3:53

Cable Holder

3:48

---

3:48

ADF Frame Assy

5:33

---

5:33

ADF Frame Upper Assy

6:24

---

6:24

ADF Pad Assy

6:53

---

6:53

ADF Frame Lower Assy

6:24

---

6:24

3:41

0:58

4:39

Scanner Housing Upper Assy

5:03

---

5:03

CIS Module

5:12

---

5:12

Combination Gear 19.2.12.6

5:18

---

5:18

Combination Gear 18.4.9.66

5:22

---

5:22

Scanner Carriage Unit

5:31

0:58

6:29

Scanner FFC

6:28

---

6:28

Scanner Housing Lower Assy

6:28

---

6:28

Hinge

3:17

---

3:17

PS Unit

3:15

1:40

4:55

Printer Mechanism

6:21

---

6:21

1:28

10:23

11:44

20:39

---

11:13

1:28

12:46

11:44

22:58

11:18

---

11:18

Holder Cam Assy

6:55

---

6:55

CR Scale

6:49

---

6:49

CR Driven Pulley Assy

7:33

---

7:33

CR Scale Holder

7:17

---

7:17

Right Frame

7:13

---

7:13

Paper Guide Upper Assy

7:12

4:03

11:15

PE Sensor Lever Assy

7:17

0:12

7:29

PF Encoder Sensor

6:56

---

6:56

PF Scale

7:11

---

7:11

Wireless LAN Module

6:26

---

6:26

Scanner Unit

Read OK Main Board Assy

8:55 Read NG

Main Board Shield Plate Upper

11:13 Read OK

Main Board

11:18 Read NG

Main Board Shield Plate Lower


Overview

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E pson E T-4550, L655/656

Revision B Table 2-1. Standard Operation Time for servicing the product Time Parts/Unit Replacement


Total

Ink End Sensor FFC

7:01

---

7:01

EJ Roller Gear

9:03

1:45

10:48

Front Frame

10:59

5:34

16:33

Star Wheel Holder Assy

11:38

1:45

13:23

Star Wheel Holder Shield Plate

11:48

---

11:48

Star Wheel Holder

11:48

1:45

13:33

EJ Roller

11:56

1:45

13:41

Main Frame Assy

11:20

7:18

18:38

PW Sensor Cover

11:33

---

11:33

PW Sensor

11:51

2:41

14:32

CR Motor

12:24

0:22

12:46

CR Unit

12:35

5:12

17:47

CR Encoder Sensor

13:01

---

13:01

CR Pressing Plate/Compression Spring3.71

13:26

---

13:26

CR Timing Belt

12:49

---

12:49

Carriage

14:24

5:12

19:36

Main Frame

12:35

6:45

19:20

ASF Cover Assy

11:34

---

11:34

ASF Drive Transmission Gears

11:41

---

11:41

PF Roller Stopper

11:41

---

11:41

PF Roller

11:51

2:15

14:06

PF Drive Transmission Gear

12:32

---

12:32

Planet Gear Assy

12:44

---

12:44

Planet Release Holder Assy

13:01

---

13:01

PF Motor Gears

11:57

---

11:57

PF Motor

12:47

0:20

13:07

Frame Base Assy

6:21

---

6:21

Ink System

7:00

---

7:00

Pickup Gear

7:10

---

7:10

Pickup Driven Shaft

7:21

---

7:21

Stacker Guide Left

6:32

---

6:32

Stacker Guide Right

6:32

---

6:32

PE Sensor

6:39

0:31

7:10

Cassette Sensor

7:18

---

7:18

Pickup Lever

6:33

---

6:33

Cassette Lock Lever/Torsion Spring 426

6:42

---

6:42

I/F Cover

6:38

---

6:38

FAX Unit

6:49

---

6:49

FAX Filter Assy*

7:20

---

7:20

FAX Filter Board

6:53

---

6:53

Note "*":

The FAX Filter Assy is mounted only on models for some country/region.


Overview

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Revision B

2.1.5 Checks and Precautions before Disassembling 2.1.5.1 Factors which Affect the Print Quality HOW TO PLACE THE INK TANK ASSY WHEN DISASSEMBLING/REASSEMBLING

The film under sealing film attached on the Ink Supply Tank Assy of this printer is ventilation film. The ink in the ink tanks is vented to atmosphere through this film to keep ink supply to the Printhead stable. If the film gets wet with ink, the ink in the tanks is not properly vented and printing may not be capable. In order to prevent this from occurring, make sure to place the Ink Supply Tank A ssy as shown below after removing it. OK

Ink Supply Tank Assy

Ventilation Hole NG Ink Supply Tank Assy

Figure 2-8. How to Place the Ink Tank Assy


Overview

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E pson E T-4550, L655/656

Revision B

2.1.5.2 Factors which Affect the Safety of Service Personnel such as Ink Leakage during Operation Ink may spill when removing the following parts from ET-4550, L655/656. This section describes the parts that may cause ink spill and the means to minimize the ink spill when removing the parts. THE PARTS THAT MAY CAUSE INK SPILL WHEN REMOVING Parts

When ink may spill

Joint

Location

Removing the Ink Supply Tank Tube Assy / Ink Supply Adapter Tube Assy from the Joint

Ink Supply Tank

• Removing the tubes of the Ink Supply Tank Tube Assy from the Joint • Removing the tubes of the Ink Supply Tank Tube Assy from the Ink Supply Tank

A

A, B

Ink Supply Tank Tube Assy Adapter

Removing the Ink Supply Adapter Tube Assy from the Adapter


• Removing the Ink Supply Adapter Tube Assy from the Joint • Removing the Ink Supply Adapter Tube Assy from the Adapter

Note : These parts are indicated with the (p37)".)

C

A, C

icon in disassembly/reassembly flowchart. (See "2.3 Disassembly/Reassembly Procedures

Adapter

Joint

Ink Supply Tank

C

A

B Ink Supply Adapter Tube Assy


Figure 2-9. Location


Overview

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Revision B

MEANS DO TO MINIMIZE THE INK SPILL

Before disassembling, confirm that the printer is in the following condition. 

Adapter is removed

Before disconnecting the joint parts of the ink path, make sure that the Adapter is removed from the Carriage. Ink path

Adapter Carriage

Figure 2-10. Adapter 

Adapter and Ink tube are disconnected

Before disconnecting the Adapter and the Ink tube, pinch the ink tube with a Tube Clip When touch the film on the ink path, ink may leak out from the joint part. So touch the plastic part. Joint part

Film

Tube Clip

Figure 2-11. Adapter and Ink tube


Overview

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E pson E T-4550, L655/656

Revision B

DISCHRGING INK FROM THE INK SUPPLY TANK

Discharging ink is recommended only when disconnecting the Ink Supply Tank Tube Assy from the Ink Supply Tank. Before performing the above disconnection, discharge ink from the Ink Supply Tank as follows.





It is recommended that the ink in the Ink Supply Tank should be discharged completely before proceeding to disassembling/reassembling.



After all the reassembling work is complete, the discharged ink of each color should be refilled back to the Ink Supply Tank before performing the adjustment. Confirm the colors indicated on the film of the Ink Supply Tank so as not to mistake them, and make sure to refill each ink back to the correct tank from the corresponding ink supply hole.

Necessary tools

Containers (x 4) for each discharged ink • Injector (with a tip of φ3.2 mm) • Cloth • Cotton swab (x 4) • Tube Clip  Discharging preparation •

1. Remove the Ink Tank Cover. 2. Remove the screws (x5) that secure the Ink Tank Unit. (p 47) 3. Remove the Ink Tank Unit from the Frame Base Assy.

Ink Tank Unit

Figure 2-12. Discharging preparation (1)

4. 5. 6. 7. 8. 9.

Release the Tube Lock from the hooks (x 2) on the Tube Guide. (p 48) Remove the screw that secures the Adapter Cover and remove the Adapter Cover. (p 47) Remove the Tube Guide Sheet from the hooks (x 3) on the CR Unit. (p 48) Release the Ink Supply Adapter Tube Assy from the groove on the CR Unit. Remove the Adapter (x 4) from the CR Unit. To minimize ink spill, pinch the Ink Supply Adapter Tube Assy with a Tube Clip.


Overview

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E pson E T-4550, L655/656

Revision B

In the next step, ink may spill from the Ink Supply Adapter Tube Assy when removing it from the Adapter. Therefore, carry out the next step somewhere other than right over the printer and be careful not to contaminate the printer and the surroundings.

10. 11. 12. 13.

Remove the Ink Supply Adapter Tube Assy from the Adapter. Insert a cotton swab into the end of the Ink Supply Adapter Tube to prevent ink from leaking. Remove the Tube Clip from the Ink Supply Adapter Tube. Repeat Step 9 to Step 12 and disconnect all tubes (x 4) of the Ink Supply Adapter Tube Assy from the Adapter.

Cloth Adapter

Tube Clip

Cotton swabs

Figure 2-13. Discharging preparation (2) In the next step, be careful not to let the cotton swabs fall off from the Ink Supply Adapter Tube. After inserting the Ink Supply Adapter Tube, pinch it with the Tube Clip.

14. Pull out the Ink Supply Adapter Tube Assy in the direction of the arrow from the hole on the Frame Base Assy. .


Frame Base Assy

Hole

Figure 2-14. Discharging preparation (3)


Overview

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Revision B



Discharging procedure 1. Insert the tip of the injector to each of the refill holes on the Ink Supply Tank. 2. Suck out ink in the tanks (x 4) of the Ink Supply Tank and transfer it into the containers (x 4) by color.


Injector Container Refill hole

Figure 2-15. Discharging Ink (1)

3. Next, Release the Ink Supply Tank Tube from holder of the Ink Supply Tank. .

Holder



Overview

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Revision B

4. Raise the tip of the Ink Supply Adapter Tube. And return the ink of the Ink Tube to the Ink Tank Unit..

Ink Tank Unit Tip of the Ink Supply Adapter Tube Assy


5. Suck out all the remaining ink while inclining the Ink Tank Unit. And then transfer it to the containers.

Ink Tank Unit



Overview

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Revision B

2.2 Common cautions when disassembling/reassembling the Product This section describes common cautions when disa ssembling/reassembling the product. Before disassembling/reassembling the printer including this product, be sure to read " Safety Precautions (p3)" and this section. Item

When handling parts

Content

Photo/Illustration

1. When handling new parts for replacement, take care not to contaminate or damage them.

2.

2. When disassembling/reassembling the parts, take care not to damage the FFCs/cables/Ink tube if there is a possibility of coming into contact with them.

3.

Printer Mechanism

3. When reassembling the product, take care not to let components of the unit come off.

Main Frame Assy

When reassembling

When installing parts, take care not to damage them when securing them by tightening screws.

When applying grease

Do not lubricate any part other than those specified. If grease is applied on such a part, wipe it off completely.

---

External parts

Confirm visually that there are no scratches, dirt, and gaps.

---

Moving parts

After reassembling, confirm that there are no abnormal noises and they work smoothly.

---

Timing belts

1. Take care not to broke them.

ADF/Scanner Unit

2.

2.

2. Confirm that it is installed properly onto the transmissive sections of the pinion gear/driven roller.

Motors Sensors

---

Take care not to damage them. 1. Take care not to touch the detector sections.

2.

2. As for the encoder Sensor used with a circular scale, the photo sensor section should be set over the encoded area of the circular scale.

3.

3. Take care not to get injured by the sharp ends of the board terminal on the back of the circuit boards when handling the sensors or the peripheral parts. Scales

1. Take care not to touch the encoded area.

2.

4.

2. Install it with the black triangular section up. (CR Scale only) 3. Wipe off alcohol before installing. (CR Scale only) 4. Confirm that they do not touch the photo sensors after installation. Waste ink pads

1. Take care not to stain your hands with the waste ink soaked in the ink pads. If ink comes into contact with your hands, wash it off with water immediately.

2.

2. Take care not to stain the printer's parts with the waste ink soaked in the ink pads. If ink comes into contact with the parts, wash it off. (Especially, pay attention to Paper Guide Front/Lower Porous Pad)

Disassembly/Reassembly Common cautions when disassembling/reassembling the Product

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FFCs

Revision B Content

Photo/Illustration

1. Be sure to insert them to their connectors on the boards as far as they will go without any loose connection such as a half-way or slant connection.

---

2. Route them along their routing paths. 3. If the double-sided tape that secures the FFCs is not strong enough to secure them, make sure to replace the tape and secure the FFCs firmly. Gears

When installing gears, pay attention to the following: • The gear section should not be damaged.

---

• No foreign material is attached. • No grease is attached on any parts other than those specified. PF rollers

Do not touch rollers for paper feeding when handling them.

One Time parts

After removing One Time parts specified in this manual, do not reuse them, but be sure to replace them with new ones.

ADF/Scanner Unit

When disassembling/reassembling the ADF/Scanner Unit, make sure to do the work with the unit open to prevent damage to the Hinges.

Holder Cam Assy

Install the assy while aligning the protrusion on the D/E Lever with the groove on the cam of the Holder Cam Assy.

One Time icon:

D/E Lever

Protrusion

Ink System

Holder Cam Assy

Groove

1. Take care not to stain your hands with ink. 2. When you connect the ink tube to another part, insert the ink tube up to the root of the joint to prevent ink leakage and secure the tube with the tube clamp.

---

3. If it's hard to insert the ink tube to the joint, apply CR06 to the inserting part of the ink tube. Ink Supply Tank

When handling the Ink Supply Tank, do not put it with the ventilation hole (A in the figure on the right) downward. (See "2.1.5 Checks and Precautions before Disassembling (p28) ")

Ink Supply Tank

A

MAC Address Label

1. Take care not to stain or damage it.

2.

2. When replacing the Housing Upper, transfer the MAC address label to the new Housing Upper.

Housing Upper

Disassembly/Reassembly Common cautions when disassembling/reassembling the Product

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Revision B

2.3 Disassembly/Reassembly Procedures 2.3.1 Functional differences between models and component parts In "2.3.2 Disassembly Flowchart (p38)", the procedures are indicated on the premise that some parts/units are removed in advance. Make sure to remove the following parts/units before starting disassembly. 

Cassette Assy

Cassette Assy

Figure 2-19. Removing the Cassette 

Duplex Unit Duplex Unit

Figure 2-20. Removing the Duplex Unit


Disassembly/Reassembly Procedures

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Revision B

2.3.2 Disassembly Flowchart This section describes procedures for disassembling the parts/units in a flowchart format. For some parts/units, detailed procedures or precautions are provided (accordingly indicated by icons and cell's color). Refer to the explanations in the example chart below and perform an appropriate disassembling and assembling procedure. (See "2.4 Detailed Disassembly/Reassembly Procedure for each Part/Unit (p45)" .) For routing cables, see "2.5 Routing FFCs/cables (p51)". The example below shows how to see the charts on the following pages. The name enclosed in gray indicate a part/unit that must be removed on the way to the target parts. Shows necessary procedures before removing the following parts.*

Paper Guide Upper Assy (p29)

 CR Timing Belt  FFC/Cable * 1

Shows the procedure number on the “FFC/ cable list”.

--Black letters indicate a part/unit not supplied as an ASP.

1

--(p 21)

(p 27)

(p 22)

Icon


(p 43)

Reference page

The boxes with only part names indicates the removal of such parts. If the names of FFCs or cables are shown, disconnect the FFCs or cables from their connectors.

Item

Parts/unit name

Shows the screw types and the specified torque in the “Screw type/torque list”.

4

S2

Shows removal/installation as a unit/assy. is available.

Note "*":

White letters indicate a part/unit supplied as an ASP.

Printer Mechanism

Main Frame Assy

Description

Reference

White-letter

Part/unit supplied as an ASP

---

Black-letter

Part/unit not supplied as an ASP

---

Indicates a practice or condition that could result in injury or loss of life if not strictly observed.

Indicates the reference page in blue-letter

Indicates a practice or condition that could result in damage to, or destruction of equipment if not strictly observed.


Indicates the parts that are inevitably broken in the disassembling procedure, and should be replaced with a new one for reassembly.

---

Indicates the parts that may cause the ink spill when they are removed.

"2.1.5 Checks and Precautions before Disassembling (p28) "

Indicates necessary check items in the disassembling/assembling procedure.


Indicates supplementary explanation for disassembly is given.


Indicates particular tasks to keep quality of the units are required.


Indicates particular routing of cables is required.


Indicates particular adjustment(s) is/are required.

Chapter 3 " Adjustment (p54)"

Indicates lubrication is required.

Chapter 4 " Maintenance (p65)"

Indicates the number of screws securing the parts/ units.

---

Indicates the points secured with other than a screw such as a hook, rib, dowel or the like.

---


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Revision B

(p 41)

A



PW Sensor Cover ---

CR Motor cable

(p 41)

PF Roller Stopper

ASF Cover Assy

CR Motor

2

1 2

--S16

---

---

1

S8

3

---

---

PF Roller


(p 51)

PW Sensor ---

CR Unit

2

---

(p 54)

---

(p 50)

CR Encoder Sensor

---

2 Main Frame

S9

-----

---

---

---

CR Pressing Plate/ Compression Spring3.71

---

---

---

---


PF Motor Gear

-----

1

---

---

---

S11

---

PF Motor

Carriage

---

Planet Gear Assy 3

--S8

---

---

---

---

---

CR Timing Belt

---

---

(p 65)

---

---

---

Screw type/torque list

(p 52)

---

Symbol Paper Guide Front

(p 65)

Planet Release Holder Assy ---

---

---

1 ---

Screw Type

Torque

S1

C.B.P-TITE SCREW 2x8 F/ZN-3C

4 ± 1kgf ·cm

S2


6 ± 1kgf ·cm

S3

C.B.P-TITE SCREW 2.5x8 F/ZN-3C

4 ± 1kgf ·cm

S4


2 ± 0.5kgf ·cm

S5


6 ± 1kgf ·cm

S6

C.B.S-TITE SCREW 3x8 F/ZB-3C

6

S7

C.B.P-TITE SCREW 3x10 F/ZB-3C

6 ± 1kgf ·cm

S8


6 ± 1kgf ·cm

S9


2 ± 0.5kgf ·cm

S10


6 ± 1kgf ·cm

S11

C.B.S-TITEP4 SCREW 3x8 F/ZN-3C

6 ± 1kgf ·cm

S12

C. B. P- TI TE S- P1 S CRE W 3 x1 2 F /Z N- 3C

6 ± 1kgf ·cm

S13

C.B.S-TITE SCREW 3x6 F/ZN-3C

8 ± 1kgf ·cm

S14


6 ± 1kgf ·cm

S15


4 ± 1kgf ·cm

S16

C.P-TITE SCREW 3x4 F/ZN-3C

4 ± 1kgf ·cm

S17


4 ± 1kgf.cm

S18


3 ± 0.5kgf.cm

± 1kgf ·cm

Flowchart 2-5. Disassembly Flowchart (5)



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Revision B

(p 41)

A



PW Sensor Cover ---

CR Motor cable

(p 41)

PF Roller Stopper

ASF Cover Assy

CR Motor

2

1 2

--S16

---

---

1

S8

3

---

---

PF Roller


(p 51)

PW Sensor ---

CR Unit

2

---

(p 54)

---

---

-----

(p 50)

CR Encoder Sensor

---

2 Main Frame

S9

---

CR Pressing Plate/ Compression Spring3.71

---

CR Timing Belt -----

---


PF Motor Gear

-----

---

---

1

---

---

---

---

---

(p 65)

S11

---

---

---

PF Motor

Carriage

Planet Gear Assy 3

-----

S8

---

---

---

Screw type/torque list

(p 52)

---

---

---

Symbol Paper Guide Front

Planet Release Holder Assy ---

---

---

1

(p 65)

---

Screw Type

Torque

S1


4 ± 1kgf ·cm

S2


6 ± 1kgf ·cm

S3


4 ± 1kgf ·cm

S4


2 ± 0.5kgf ·cm

S5


6 ± 1kgf ·cm

S6


6

S7


6 ± 1kgf ·cm

S8


6 ± 1kgf ·cm

S9


2 ± 0.5kgf ·cm

S10


6 ± 1kgf ·cm

S11


6 ± 1kgf ·cm

S12


6 ± 1kgf ·cm

S13


8 ± 1kgf ·cm

S14


6 ± 1kgf ·cm

S15


4 ± 1kgf ·cm

S16


4 ± 1kgf ·cm

S17


4 ± 1kgf.cm

S18


3 ± 0.5kgf.cm

± 1kgf ·cm




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5



Revision B

9

(p 39)

(p 39)

Joint


S8

Cap Tank

Adapter Cover

Tube Clamp (x3)



Tube Lock



2

---

1

---

2

---

3

---

(p 48)

S10

(p 48)

(p 47)

(p 48)

---

Ink Supply Adapter Tube Assy Ink Supply Tank Tube Assy

2 Joint

(p 48)

--Ink Tank Housing Upper



2

Tube Lock (p44) (p 48)

2

S8

Adapter(Bk)

(p 49)

Ink End Sensor Assy 4

(p 47)

Tube Guide Sheet

Adapter(C/M/Y) ---

---

1

1 (p 47)

--5 (p 48)

4

S5


(p 49)



2




Screw type/torque list ---

Ink Supply Tank (C/M/Y)

Ink Supply Tank (Bk)

---

---

---

---

---

(p 48)

(p 49)

(p 49)

Ink Supply Tank Tube Assy --4

Symbol

Screw Type

Torque

S1


4 ± 1kgf ·cm

S2


6 ± 1kgf ·cm

S3


4 ± 1kgf ·cm

S4


2 ± 0.5kgf ·cm

S5


6 ± 1kgf ·cm

S6


6

S7


6 ± 1kgf ·cm

S8


6 ± 1kgf ·cm

S9


2 ± 0.5kgf ·cm

S10


6 ± 1kgf ·cm

S11


6 ± 1kgf ·cm

S12


6 ± 1kgf ·cm

S13


8 ± 1kgf ·cm

S14


6 ± 1kgf ·cm

S15


4 ± 1kgf ·cm

S16


4 ± 1kgf ·cm

S17


4 ± 1kgf.cm

S18


3 ± 0.5kgf.cm

---

± 1kgf ·cm




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5



Revision B

9

(p 39)

(p 39)

Joint


S8

Cap Tank

Adapter Cover

Tube Clamp (x3)



Tube Lock



2

---

2

---

(p 48)

S10

(p 48)

1

---

3

---

(p 47)

---

Ink Supply Adapter Tube Assy Ink Supply Tank Tube Assy

2

(p 48)

Joint

(p 48)

--Ink Tank Housing Upper



2

2


Tube Lock (p44) (p 48)

2

S8

Adapter(Bk)

(p 49)

Ink End Sensor Assy 4

---

---

---

1

1

5

(p 47)

(p 48)

(p 47)

4

S5


(p 49)



Tube Guide Sheet

Adapter(C/M/Y)



Screw type/torque list ---

Ink Supply Tank (C/M/Y)

Ink Supply Tank (Bk)

Symbol

---

---

---

---

---

(p 48)

(p 49)

(p 49)

Ink Supply Tank Tube Assy --4

Screw Type

Torque

S1


4 ± 1kgf ·cm

S2


6 ± 1kgf ·cm

S3


4 ± 1kgf ·cm

S4


2 ± 0.5kgf ·cm

S5


6 ± 1kgf ·cm

S6


6

S7


6 ± 1kgf ·cm

S8


6 ± 1kgf ·cm

S9


2 ± 0.5kgf ·cm

S10


6 ± 1kgf ·cm

S11


6 ± 1kgf ·cm

S12


6 ± 1kgf ·cm

S13


8 ± 1kgf ·cm

S14


6 ± 1kgf ·cm

S15


4 ± 1kgf ·cm

S16


4 ± 1kgf ·cm

S17


4 ± 1kgf.cm

S18


3 ± 0.5kgf.cm

---

± 1kgf ·cm




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2.4 Detailed Disassembly/Reassembly Procedure for each Part/Unit ADF/Scanner Unit

ADF Unit/Scanner Unit

ADF/Scanner Unit

Rear

ADF Pad Assy Bottom

ADF Hinge

ADF Pad Assy

0 digit side ADF Unit

ADF cable holder

Hook

ADF Pad Assy

Scanner Unit Tab

C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf ·cm)

Remove the ADF/Scanner Unit as follows.

ADF Frame Assy

1. Open the ADF/Scanner Unit and remove the screw that secures the ADF/Scanner Unit.

Hook Dowel

2. Release the ADF/Scanner Unit from the hinge on the 80-digit side. 3. Release the dowel on the 0-digit side of the ADF/Scanner Unit by pressing the tab outwardly and then remove the ADF/Scanner Unit by lifting it. 4. Disconnect the ADF PE Sensor cable, Scanner FFC, and grounding wire.(p 51)

ADF Frame Assy

Release the hooks (one each) on the ADF Hinges and the hook on the ADF cable holder, and remove the ADF Unit/Scanner Unit.

Release the hooks (x 2) and dowels (x 2) on the ADF Pad Assy from the ADF Frame Assy, and then remove the ADF Pad Assy.

Document Mat Step4

Scanner Housing Upper Assy Scanner Unit Upper

ADF PE Sensor

Scanner Housing Upper Assy

1

ADF Frame Assy Document Mat

ADF Unit

Scanner Unit Bottom


ADF PE Sensor cable 3

ADF Base

2

Dowel and Hole C.B.P-TITE SCREW 3x8 F/ZN-3C (6 ± 1 kgf ·cm) Standard line

Remove the ADF Frame Assy as follows. 1. Remove the screws (x 2) that secure the ADF Frame Assy.

4 C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf ·cm)

2. Release the dowels (x 2) on the ADF Frame Assy from the holes (x 2) on the ADF Base. 3. Release the ADF PE Sensor cable from the securing points of the routing.(p 51) 4. Disconnect the ADF PE Sensor cable from the ADF PE Sensor on the ADF Frame Assy, and then remove the ADF Frame Assy.


5

Attach the Document Mat on the ADF Unit with double-sided tape as shown above while aligning the mat with the standard lines.

Detailed Disassembly/Reassembly Procedure for each Part/Unit

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

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2.4 Detailed Disassembly/Reassembly Procedure for each Part/Unit ADF/Scanner Unit

ADF Unit/Scanner Unit

ADF/Scanner Unit

Rear

ADF Pad Assy Bottom

ADF Hinge

ADF Pad Assy

0 digit side ADF Unit

ADF cable holder

Hook

ADF Pad Assy

Scanner Unit Tab


Remove the ADF/Scanner Unit as follows.

ADF Frame Assy

1. Open the ADF/Scanner Unit and remove the screw that secures the ADF/Scanner Unit.

Hook Dowel

2. Release the ADF/Scanner Unit from the hinge on the 80-digit side. 3. Release the dowel on the 0-digit side of the ADF/Scanner Unit by pressing the tab outwardly and then remove the ADF/Scanner Unit by lifting it.

Release the hooks (one each) on the ADF Hinges and the hook on the ADF cable holder, and remove the ADF Unit/Scanner Unit.

4. Disconnect the ADF PE Sensor cable, Scanner FFC, and grounding wire.(p 51)

ADF Frame Assy

Release the hooks (x 2) and dowels (x 2) on the ADF Pad Assy from the ADF Frame Assy, and then remove the ADF Pad Assy.

Document Mat Step4

Scanner Housing Upper Assy Scanner Housing Upper Assy

Scanner Unit Upper

ADF PE Sensor

1

ADF Frame Assy Document Mat

ADF Unit


Scanner Unit Bottom ADF PE Sensor cable 3

2

Dowel and Hole

ADF Base

C.B.P-TITE SCREW 3x8 F/ZN-3C (6 ± 1 kgf ·cm) 5

Standard line

Remove the ADF Frame Assy as follows.

4

1. Remove the screws (x 2) that secure the ADF Frame Assy.


2. Release the dowels (x 2) on the ADF Frame Assy from the holes (x 2) on the ADF Base. 3. Release the ADF PE Sensor cable from the securing points of the routing.(p 51) 4. Disconnect the ADF PE Sensor cable from the ADF PE Sensor on the ADF Frame Assy, and then remove the ADF Frame Assy.



Attach the Document Mat on the ADF Unit with double-sided tape as shown above while aligning the mat with the standard lines.


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Revision B Scanner Housing Lower Assy

Panel Unit

ScannerS drive gears


Panel Unit (Backface)

Scanner drive lever

Panel Unit

Step3

Extension Spring 0.526

Panel Board

Speaker cable

Hook

Panel FFC

C.B.P-TITE SCREW 3x10 F/ZB-3C (6 ± 1 kgf ·cm)

Remove the Panel Unit as follows. 1. Remove the screws (x 2) that secure the Panel Unit. 2. Release the hooks (x 3) on the Panel Unit, and detach the Panel Unit.

Install the Scanner driver gears, scanner drive lever, and Extension Spring 0.526 as shown above.

3. Disconnect the Panel FFC and the Speaker cable from the connectors on the backface of the Panel Board, and remove the Panel Unit.

Panel Board

Speaker OK

Speaker

Housing Upper Left

Right

Precision driver

Precision driver

Housing Upper

Panel Housing Assy

Panel Board

Hook 4

3

2

Hook

1 NG

Speaker

Dowel and positioning hole C.B.P-TITE SCREW 3x10 F/ZN-3C (6

± 1kgf ·cm)



When reassembling, align the dowels on the Panel Housing Assy with the positioning holes on the Panel Board.





When handling the Speaker, do not pinch the middle of the woofer cone but make sure to hold it by the rim.

Since the Housing Upper is secured by the hooks (x 2) shown above, release the hooks with a precision screwdriver or a similar tool when removing the Housing Upper.


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Revision B Scanner Housing Lower Assy

Panel Unit

ScannerS drive gears


Panel Unit (Backface)

Scanner drive lever

Panel Unit

Step3


Panel Board

Speaker cable

Hook

Panel FFC

C.B.P-TITE SCREW 3x10 F/ZB-3C (6 ± 1 kgf ·cm)

Remove the Panel Unit as follows. 1. Remove the screws (x 2) that secure the Panel Unit. 2. Release the hooks (x 3) on the Panel Unit, and detach the Panel Unit.

Install the Scanner driver gears, scanner drive lever, and Extension Spring 0.526 as shown above.

3. Disconnect the Panel FFC and the Speaker cable from the connectors on the backface of the Panel Board, and remove the Panel Unit.

Panel Board

Speaker OK

Speaker

Housing Upper Left

Right

Precision driver

Precision driver

Housing Upper

Panel Housing Assy

Panel Board

Hook 4

3

2

Hook

1 NG

Speaker

Dowel and positioning hole C.B.P-TITE SCREW 3x10 F/ZN-3C (6

± 1kgf ·cm)



When reassembling, align the dowels on the Panel Housing Assy with the positioning holes on the Panel Board.





When handling the Speaker, do not pinch the middle of the woofer cone but make sure to hold it by the rim.

Since the Housing Upper is secured by the hooks (x 2) shown above, release the hooks with a precision screwdriver or a similar tool when removing the Housing Upper.


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Revision B


Paper Stopper Assy

Ink Supply Adapter Tube Assy / Tube Guide Sheet / Joint / Tube Lock / Tube Clamp

Paper Stopper Assy

Step 3



Cam Slider

Tube Guide Sheet Tube Guide

Paper Stopper

Hook Dowel Groove on CR Unit Step 8 Tube Lock


Hook C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf ·cm) Note: Ink Supply Tank in photo above is not charg ed with ink.

Slider Base Step 8 Compression Spring1.99

Stopper lever

Remove the Ink Tank Housing Lower as follows: 1. Remove the screws (x 2) that secure the Ink Tank Housing Lower. 2. Disengage the hooks (x 2) and remove Ink Tank Housing Lower.

Step 7

Tube Guide Sheet

0.5 mm or less

Ink Supply Adapter Tube

Joint Tube Guide

Hook

If any of the parts of the Paper Stopper Assy 1st/2nd comes off when removing it, be sure to reassemble the Paper Stopper Assy 1st/2nd as shown above.

Cap Tank Hole and Hook

CR Unit

0.5 mm or less

Ink Supply Tank Tube

OK

Step 1, 2 Ink Supply Adapter Tube Assy Tube Clamp Tube Clamp 45 degrees

Tube Lock To adapter

To tank

2

Ink Supply Tank Tube NG Cap Tank Black

3 C, M, Y

1. Attach Tube Clamp while align it with the markings (x 3) on Ink Supply Adapter Tube Assy as shown above. 2. Attach Tube Lock onto Ink Supply Adapter Tube Assy.

3 mm or less

3. Align the holes on Tube Guide Sheet with the dowels (x 2) on Tube Guide and secure them with the hooks (x 2). 4. With the opening on Tube Clamp facing Tube Guide Sheet, attach Ink Supply Adapter Tube Assy onto Tube Guide. When connecting the Cap Tank to the Ink Tank Housing Upper, insert each cap fully and make sure the gaps between the end of caps and the Ink Tank Housing Upper are 3 mm long or less.

5. Connect Ink Supply Adapter Tube Assy with Adapter and secure it with the groove on CR Unit.

To prevent damage to Cap Tank, attach it with the knob at an angle of 45 degrees.

7. Connect Ink Supply Adapter Tube Assy with Joint.

6. Engage the holes (x 3) on Tube Guide Sheet with the hooks (x 3) on CR Unit, secure them by sliding it in the arrow's direction. 8. Secure Tube Lock with the hooks (x 2) on Tube Guide.



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Paper Stopper Assy

Ink Supply Adapter Tube Assy / Tube Guide Sheet / Joint / Tube Lock / Tube Clamp

Paper Stopper Assy

Step 3



Cam Slider

Tube Guide Sheet Tube Guide

Paper Stopper

Hook Dowel Groove on CR Unit Step 8 Tube Lock


Hook C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf ·cm) Note: Ink Supply Tank in photo above is not charg ed with ink.

Slider Base Step 8 Compression Spring1.99

Stopper lever

Remove the Ink Tank Housing Lower as follows: 1. Remove the screws (x 2) that secure the Ink Tank Housing Lower.

Step 7

0.5 mm or less

Ink Supply Adapter Tube

Tube Guide Sheet

Joint Tube Guide

Hook

If any of the parts of the Paper Stopper Assy 1st/2nd comes off when removing it, be sure to reassemble the Paper Stopper Assy 1st/2nd as shown above.

2. Disengage the hooks (x 2) and remove Ink Tank Housing Lower.

Cap Tank Hole and Hook

CR Unit

Ink Supply Tank Tube

0.5 mm or less

OK

Step 1, 2 Ink Supply Adapter Tube Assy Tube Clamp Tube Clamp

Tube Lock

45 degrees

To adapter

To tank

2

Ink Supply Tank Tube NG Cap Tank

3

Black

C, M, Y

1. Attach Tube Clamp while align it with the markings (x 3) on Ink Supply Adapter Tube Assy as shown above. 2. Attach Tube Lock onto Ink Supply Adapter Tube Assy.

3 mm or less

3. Align the holes on Tube Guide Sheet with the dowels (x 2) on Tube Guide and secure them with the hooks (x 2). 4. With the opening on Tube Clamp facing Tube Guide Sheet, attach Ink Supply Adapter Tube Assy onto Tube Guide. When connecting the Cap Tank to the Ink Tank Housing Upper, insert each cap fully and make sure the gaps between the end of caps and the Ink Tank Housing Upper are 3 mm long or less.

5. Connect Ink Supply Adapter Tube Assy with Adapter and secure it with the groove on CR Unit.

To prevent damage to Cap Tank, attach it with the knob at an angle of 45 degrees.

7. Connect Ink Supply Adapter Tube Assy with Joint.

6. Engage the holes (x 3) on Tube Guide Sheet with the hooks (x 3) on CR Unit, secure them by sliding it in the arrow's direction. 8. Secure Tube Lock with the hooks (x 2) on Tube Guide.



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Ink End Sensor Assy / Ink Supply Tank Back

Printer Mechanism Screw (x2)

80 digit side

Printer Mechanism

0 digit side

1 mm or less Ink Tank Housing Upper Ink End Sensor Assy

1

2 9

7

Ink Supply Adapter Tube 8

4

3

Groove C.B.P-TITE SCREW 3x8 F/ZN-3C (6 ± 1 kgf ·cm)

Hook C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf ·cm)

Ink Supply Tank

5

6

Remove the Ink End Sensor Assy as follows: 1. Remove the screws (x 4) that secure the Ink End Sensor Assy. 2. Remove Ink End Sensor Assy by sliding it in the arrow's direction. 

Remove the Ink Tank Housing Upper as follows: 1. Remove Cap Tank. 2. Remove the screws (x 2) that secure the Ink Tank Housing Upper. 3. Disengage the hooks (x 2) and remove Ink Tank Housing Upper.



When connecting the Ink Supply Tank Tube Assy to the Ink Supply Tank, insert each tubes fully and make sure the gaps between the end of tubes and the Ink Suppl y Tank are 1 mm long or less. Attach Ink End Sensor Assy while aligning it with the groove on Ink Supply Tank, and secure the assy with the screw (x 4).

CR Scale CR Scale

C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf ·cm) C.B.P-TITE(S-P1) SCREW 3x12 F/ZN-3C (6 ± 1 kgf ·cm)

When removing the Printer Mechanism, remove the screws (x 9) shown above. 

Take utmost care not to catch cables/FFCs.



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

Holder Cam Assy

PF Encoder Sensor/PF Scale

Side view of CR Unit

PF Scale Main Frame

Black mark

Main Board Assy

D/E Lever

Holder Cam Assy Main Board Assy

PF Roller PF Encoder Sensor

Slit of CR Encoder PF Encoder Sensor

2

PF Scale

CR Scale

PF Roller

Protrusion

3

Groove

C.B.P-TITE SCREW 2x8 F/ZN-3C (4 ± 1 kgf ·cm) 1 

When attaching the PF Scale, if the double-sided tape does not have sufficient adhesive power or is contaminated, make sure to replace the tape.

CR Unit



Attach with the black triangle on the upper left corner.



Set through the slit on the CR Encoder.




When reassembling, align the cam slit on the Holder Cam Assy with the protrusion on the D/E Lever.



Make sure to attach the PF Scale correctly perpendicular to the PF Roller.



After installing the Holder Cam Assy, make sure that the Holder Cam Assy operates normally.



After installing the PF Encoder Sensor, make sure that the PF Scale is not in contact with the PF Encoder Sensor.


C.B.S-TITE SCREW 3x6 F/ZN-3C (8 ± 1 kgf ·cm) C.B.S-TITE SCREW 3x6 F/ZN-3C (4 ± 1 kgf ·cm)


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Ink End Sensor Assy / Ink Supply Tank Back

Printer Mechanism Screw (x2)

80 digit side

Printer Mechanism

0 digit side

1 mm or less Ink Tank Housing Upper Ink End Sensor Assy

1

2 9

7

Ink Supply Adapter Tube 8

4

3

Groove C.B.P-TITE SCREW 3x8 F/ZN-3C (6 ± 1 kgf ·cm)

Hook

Ink Supply Tank

5

6

Remove the Ink End Sensor Assy as follows:


1. Remove the screws (x 4) that secure the Ink End Sensor Assy. 2. Remove Ink End Sensor Assy by sliding it in the arrow's direction. 

Remove the Ink Tank Housing Upper as follows: 1. Remove Cap Tank. 2. Remove the screws (x 2) that secure the Ink Tank Housing Upper.



3. Disengage the hooks (x 2) and remove Ink Tank Housing Upper.

When removing the Printer Mechanism, remove the screws (x 9) shown above.

Attach Ink End Sensor Assy while aligning it with the groove on Ink Supply Tank, and secure the assy with the screw (x 4).

CR Scale CR Scale

C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf ·cm) C.B.P-TITE(S-P1) SCREW 3x12 F/ZN-3C (6 ± 1 kgf ·cm)

When connecting the Ink Supply Tank Tube Assy to the Ink Supply Tank, insert each tubes fully and make sure the gaps between the end of tubes and the Ink Suppl y Tank are 1 mm long or less.



Take utmost care not to catch cables/FFCs.



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

Holder Cam Assy

PF Encoder Sensor/PF Scale


Main Board Assy

PF Scale Main Frame

Black mark

D/E Lever

Holder Cam Assy Main Board Assy

PF Roller PF Encoder Sensor

Slit of CR Encoder PF Encoder Sensor

2

PF Scale

CR Scale

PF Roller

Protrusion

3

Groove

C.B.P-TITE SCREW 2x8 F/ZN-3C (4 ± 1 kgf ·cm) 1 

When attaching the PF Scale, if the double-sided tape does not have sufficient adhesive power or is contaminated, make sure to replace the tape.

CR Unit



Attach with the black triangle on the upper left corner.



Set through the slit on the CR Encoder.



When reassembling, align the cam slit on the Holder Cam Assy with the protrusion on the D/E Lever.



Make sure to attach the PF Scale correctly perpendicular to the PF Roller.



After installing the Holder Cam Assy, make sure that the Holder Cam Assy operates normally.



After installing the PF Encoder Sensor, make sure that the PF Scale is not in contact with the PF Encoder Sensor.





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EJ Roller Gear



PF Roller

80 digit side

1

EJ grounding spring 2 PF Roller

PF Roller grounding spring

7

4 6

3 Bottom

2

5

1

EJ Roller Gear

EJ Roller

C.B.S-TITE SCREW 3x6 F/ZN-3C (4 ± 1 kgf ·cm) C.P SCREW 3x4 F/ZN-3C (4 ± 1 kgf ·cm) C.B.S-TITE SCREW 3x10 F/ZN-3C (4 ± 1 kgf ·cm)

Star Wheel Holder Assy C.B.P-TITE(SP-1) SCREW 3x12 F/ZN-3C (6 ± 1 kgf ·cm)

Insert the EJ Roller Gear fully into the EJ Roller to make it secured completely.




Attach the EJ grounding spring as shown above.




Main Frame Assy

Ink System

Bottom of CR Unit

Rear

Right Frame

Cutout

Section B

Rail

Attach the PF Roller grounding spring as shown above.

Ink Tube

D/E Lever 1

2 80 digit side Guide

Right Frame Main Frame Assy

Nozzle plate surface of Printhead

CR unit

C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf ·cm) Align the marking

Remove the PW Sensor, CR Unit and so on without removing the Main Frame Assy as much as possible when removing them because section B on the Paper Guide Front Assy is deformed when the screw of 80-digits side is removed. Rib

If removing the Main Frame Assy, remove it as follows.

Hook and Hole

1. Move the CR Unit to the end of the 80-digit side, and detach the rails (x 2) of the CR Unit from the guides on the Front Frame.

When routing the Ink Tube, be careful about the following.

2. Remove the D/E Lever by sliding it to the 0-digit side and aligning the shape of the lever with the cutout on the Main Frame Assy.



Route through the ribs (x 3) on the Frame Base Assy.

3. Release the CR Motor cable from the hook on the Main Frame Assy.(p 51)



Make sure that the Ink Tube is not folded in any part.

4. Release the Head FFC from the hook on the Front Frame.(p 52)



Align the marking of the ink tube with the hole of the Frame Base Assy.

5. Remove the screws (x 2) that secure the Main Frame Assy, and remove the Main Frame Assy.




When reassembling, align the hooks on the Main Frame/Front Frame with the positioning holes on the Right Frame.

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Revision B


EJ Roller Gear



PF Roller

80 digit side

1

EJ grounding spring 2 PF Roller


7

4 6

3 Bottom

2

5

1

EJ Roller Gear

EJ Roller

C.B.S-TITE SCREW 3x6 F/ZN-3C (4 ± 1 kgf ·cm) C.P SCREW 3x4 F/ZN-3C (4 ± 1 kgf ·cm) C.B.S-TITE SCREW 3x10 F/ZN-3C (4 ± 1 kgf ·cm)

Star Wheel Holder Assy C.B.P-TITE(SP-1) SCREW 3x12 F/ZN-3C (6 ± 1 kgf ·cm)

Insert the EJ Roller Gear fully into the EJ Roller to make it secured completely.




Attach the EJ grounding spring as shown above.




Main Frame Assy

Ink System

Bottom of CR Unit

Rear

Right Frame

Cutout

Section B

Rail

Attach the PF Roller grounding spring as shown above.

Ink Tube

D/E Lever 1

2 80 digit side Guide

Right Frame Main Frame Assy

Nozzle plate surface of Printhead

CR unit

C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf ·cm) Align the marking

Remove the PW Sensor, CR Unit and so on without removing the Main Frame Assy as much as possible when removing them because section B on the Paper Guide Front Assy is deformed when the screw of 80-digits side is removed. Rib

If removing the Main Frame Assy, remove it as follows.

Hook and Hole

1. Move the CR Unit to the end of the 80-digit side, and detach the rails (x 2) of the CR Unit from the guides on the Front Frame.

When routing the Ink Tube, be careful about the following.

2. Remove the D/E Lever by sliding it to the 0-digit side and aligning the shape of the lever with the cutout on the Main Frame Assy.



Route through the ribs (x 3) on the Frame Base Assy.

3. Release the CR Motor cable from the hook on the Main Frame Assy.(p 51)



Make sure that the Ink Tube is not folded in any part.

4. Release the Head FFC from the hook on the Front Frame.(p 52)



Align the marking of the ink tube with the hole of the Frame Base Assy.

5. Remove the screws (x 2) that secure the Main Frame Assy, and remove the Main Frame Assy.



When reassembling, align the hooks on the Main Frame/Front Frame with the positioning holes on the Right Frame.


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Revision B

2.5 Routing FFCs/cables ADF/Scanner Unit

ADF Frame Assy

Scanner Housing Lower Assy Scanner Housing Lower Assy

ADF PE Sensor

ADF PE Sensor cable

Scanner GND wire

Hole

GND terminal

ADF/Scanner Unit ADF Frame Assy

ADF PE Sensor cable

Main Board Assy

Grounding wire

Scanner FFC Scanner FFC

Ferrite core

Rib Cable guide

Double-sided tape

ADF PE Sensor cable 

Hole

Rib

ADF Base

Connect the Scanner FFC, ADF PE Sensor cable, and grounding wire to their connectors on the Main Board Assy as shown above.

Route the ADF PE Sensor cable through the rib and then through the hole on the bottom of the ADF Base, and then connect it to the ADF PE Sensor on the ADF Frame Assy.


CR Motor cable



• •

Route through the ribs (x 11) on the Scanner Housing Lower Assy. Set the ferrite core in the position shown below and secure it with double-sided tape. Scanner grounding (GND) wire Set the grounding (GND) terminal in the position shown above. Route through the cable guides (x 3), then through the hole on the Scanner Housing Lower Assy.

Speaker cable/Panel FFC

CR Motor cable

CIS Module

Scanner FFC • •

Frame Base Assy

Rear

Panel FFC

Scanner FFC


CR Motor cable

Main Board

FFC guide

Speaker cable Panel FFC Scanner FFC

Scanner encoder sensor

Rib



Route the Scanner FFC through the ribs (x 2) on the Scanner Carriage Unit.



Route the Scanner FFC through the FFC guide and connect to CN1 on Scanner encoder sensor



Connect the Scanner FFC to the CIS Module aligning with the folds on the FFC.


CR Motor

C R M ot or c ab le

P ri nt er M ec ha ni sm



Hook

Route through the hooks (x 9) on the Printer Mechanism, and connect to the connector (CN9) on the Main Board.

Rib Double-sided tape

Speaker cable

Route through the rib on the Frame Base Assy. 

Panel FFC

Route behind the ribs (x 4) on the Frame Base Assy and secure at the points (x2) above with double-sided tape.

Routing F F Cs/cables

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2.5 Routing FFCs/cables ADF/Scanner Unit

ADF Frame Assy

Scanner Housing Lower Assy Scanner Housing Lower Assy

ADF PE Sensor

ADF PE Sensor cable

Scanner GND wire

Hole

GND terminal

ADF/Scanner Unit ADF Frame Assy

ADF PE Sensor cable

Main Board Assy

Grounding wire

Scanner FFC Scanner FFC

Ferrite core

Rib Cable guide

Double-sided tape

ADF PE Sensor cable 

Hole

Connect the Scanner FFC, ADF PE Sensor cable, and grounding wire to their connectors on the Main Board Assy as shown above.

Rib

ADF Base

Route the ADF PE Sensor cable through the rib and then through the hole on the bottom of the ADF Base, and then connect it to the ADF PE Sensor on the ADF Frame Assy.


Scanner FFC • •



• •

Route through the ribs (x 11) on the Scanner Housing Lower Assy. Set the ferrite core in the position shown below and secure it with double-sided tape. Scanner grounding (GND) wire Set the grounding (GND) terminal in the position shown above. Route through the cable guides (x 3), then through the hole on the Scanner Housing Lower Assy.

CR Motor cable

Speaker cable/Panel FFC

CR Motor cable

CIS Module

Frame Base Assy

Rear

Panel FFC

Scanner FFC


CR Motor cable

Main Board

FFC guide

Speaker cable Panel FFC Scanner FFC

Scanner encoder sensor


Rib



Route the Scanner FFC through the ribs (x 2) on the Scanner Carriage Unit.



Route the Scanner FFC through the FFC guide and connect to CN1 on Scanner encoder sensor



Connect the Scanner FFC to the CIS Module aligning with the folds on the FFC.

CR Motor

C R M ot or c ab le

P ri nt er M ec ha ni sm



Hook

Route through the hooks (x 9) on the Printer Mechanism, and connect to the connector (CN9) on the Main Board.


Speaker cable

Route through the rib on the Frame Base Assy. 

Panel FFC

Route behind the ribs (x 4) on the Frame Base Assy and secure at the points (x2) above with double-sided tape.


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Revision B Head FFC / CR Encoder FFC Head FFC

Rear

Printer Mechanism Side

PS Unit cable

CR Encoder FFC

Head FFC

Ferrite core

CR Motor cable

Frame Base Assy

CR Encoder Sensor CR Unit

CR Encoder FFC

CR Encoder

Printer Mechanism

CR Unit

CR Encoder FFC

PE Sensor cable

CR Unit

FAX FFC

Holder Board

Main Board Assy

Hook Rib



PE Sensor cable:



Cassette Sensor cable: Route through the hook on the Main Board Assy and connect to the connector (CN16) on the Main Board Assy.



FAX FFC:

Route along the FFC’s folds and through the hooks on the Main Board Assy and connect to the connector (CN1) on the Main Board Assy.



PS Unit cable:

Connect to the connector (CN501) on the Main Board Assy, and route through the hook on the Main Board Assy, and then set the ferrite core in the position shown above.



CR Motor cable:

Route through the rib on the Frame Base Assy and wrap one turn around the hook on the Frame Base Assy.

Route through the hook on the Main Board Assy and connect to the connector (CN13) on the Main Board Assy.

PF Encoder Sensor FFC Hook Hole Double-sided tape

Rear

Front Frame

Wrap 1 turn

Cassette Sensor cable

PF Motor cable

Left side of Printer Mechanism

Main Board Assy

CR Encoder FFC

Rear

Front Frame

Main Board Assy

Head FFC PF Encoder Sensor FFC Main Board Assy

PF Mo to r c abl e

M ai n Bo ar d

Paper Guide Front



PF Motor cable

Route the Head FFC as follows:

1. Connect to the connector on the Printhead, and then install the Printhead.(p 47) 2. Route the hole on the CR Unit, then route through the hooks (x 3) on the side of the CR Unit. 3. Route through the hooks (x 4) on the Main Board Assy and Front Frame, then connect to the connector (CN14) on the Main Board Assy. 

Route the CR Encoder FFC as follows:

1. Route through the hole on the CR Unit and connect it to the connector (CN1) on the CR Encoder.

Groove Rib Hook

2. Route through the hooks (x 3) on the side of the CR Unit. 3. Attach the Holder Board.

Double-sided tape

4. Route through the hooks (x 4) on the Main Board Assy and Front Frame, then secure with double-sided tape on the Front Frame at the positions (x 2) shown above. 5. Connect to the connector (CN17) on the Main Board Assy.


Secure the PF Encoder Sensor FFC with double-sided tape at the point shown above, and connect it to the connector (CN6) on the Main Board Assy.




Route through the grooves (x 5) and the rib on the Paper Guide Front.




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Revision B Head FFC / CR Encoder FFC Head FFC

Rear

Printer Mechanism Side

PS Unit cable

CR Encoder FFC

Head FFC

Ferrite core

CR Motor cable

Frame Base Assy

CR Encoder Sensor CR Unit

CR Encoder

CR Encoder FFC

Printer Mechanism

CR Unit

CR Encoder FFC

PE Sensor cable

CR Unit

FAX FFC

Holder Board

Main Board Assy

Hook Rib



PE Sensor cable:



Cassette Sensor cable: Route through the hook on the Main Board Assy and connect to the connector (CN16) on the Main Board Assy.



FAX FFC:

Route along the FFC’s folds and through the hooks on the Main Board Assy and connect to the connector (CN1) on the Main Board Assy.



PS Unit cable:

Connect to the connector (CN501) on the Main Board Assy, and route through the hook on the Main Board Assy, and then set the ferrite core in the position shown above.



CR Motor cable:

Route through the rib on the Frame Base Assy and wrap one turn around the hook on the Frame Base Assy.


PF Encoder Sensor FFC Hook Hole Double-sided tape

Rear

Front Frame

Wrap 1 turn


PF Motor cable

Left side of Printer Mechanism

Rear

Main Board Assy

Front Frame

Main Board Assy

Head FFC

CR Encoder FFC

PF Encoder Sensor FFC Main Board Assy

PF Mo to r c abl e

M ai n Bo ar d

Paper Guide Front



PF Motor cable

Route the Head FFC as follows:

1. Connect to the connector on the Printhead, and then install the Printhead.(p 47) 2. Route the hole on the CR Unit, then route through the hooks (x 3) on the side of the CR Unit. 3. Route through the hooks (x 4) on the Main Board Assy and Front Frame, then connect to the connector (CN14) on the Main Board Assy. 

Route the CR Encoder FFC as follows:

1. Route through the hole on the CR Unit and connect it to the connector (CN1) on the CR Encoder.

Groove Rib Hook

2. Route through the hooks (x 3) on the side of the CR Unit. 3. Attach the Holder Board.

Double-sided tape

4. Route through the hooks (x 4) on the Main Board Assy and Front Frame, then secure with double-sided tape on the Front Frame at the positions (x 2) shown above. 5. Connect to the connector (CN17) on the Main Board Assy.


Secure the PF Encoder Sensor FFC with double-sided tape at the point shown above, and connect it to the connector (CN6) on the Main Board Assy.



Route through the grooves (x 5) and the rib on the Paper Guide Front.





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FAX Unit Frame Base Assy

PE Sensor

Ink End Sensor FFC (1) 80-digit side

FAX FFC

PE Sensor cable

Frame Base Assy

0-digit side

Main Board

Frame Base Assy

CN5 Ink End Sensor FFC

Inside of Frame Base Assy

PE Sensor

Hook Hole

FAX Unit Rib Hook Groove


Route the FAX FFC along the rib on the Frame Base Assy, and secure it with double-sided tape at the point shown above.

Route the PE Sensor cable through the ribs (x2), hook, and groove on the Frame Base Assy.


Route the Ink End Sensor FFC as follows from the 80 digit side. 

80-digit side: Connect to the connector (CN5) on the Main Board and secure with double-sided tape at the point shown above.



Center:

Route along the folds of the Ink End Sensor FFC and secure with double-sided tape (x 2) at the points on the Front Frame shown above.



0-digit side:

Route along the folds of the Ink End Sensor FFC and through the hole on the Frame Base Assy, and then route through the hook.

Ink End Sensor FFC (2)

Cassette Sensor Frame Base Assy

Ink End Sensor FFC


Ink End Sensor FFC


Ink End Sensor Assy

Top

Ink End Sensor Assy

CN1 Bottom

Ink Supply Tank

Rib Hole Groove Rib Hook Cutout

Route the Ink End Sensor FFC as shown below. 1. Route from the bottom of the Ink End Sensor Assy upward through the cutout. 2. Route through the rib (x 1) and hook (x 1) on the Ink End Sensor Assy, and then connect to the connector (CN1) as shown above.


Cassette Sensor

Ink End Sensor FFC

Route the Cassette Sensor cable as shown below: 1. Route through the rib and into the hole on the bottom of the Frame Base Assy. 2. Pull out from the hole on the other side and route through the ribs (x 3) and grooves (x 2) on the Frame Base Assy.


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FAX Unit Frame Base Assy

PE Sensor

Ink End Sensor FFC (1) 80-digit side

FAX FFC

PE Sensor cable

Frame Base Assy

0-digit side

Main Board

Frame Base Assy

CN5 Ink End Sensor FFC

Inside of Frame Base Assy

PE Sensor

Hook Hole

FAX Unit Rib Hook Groove


Route the FAX FFC along the rib on the Frame Base Assy, and secure it with double-sided tape at the point shown above.

Route the PE Sensor cable through the ribs (x2), hook, and groove on the Frame Base Assy.


Route the Ink End Sensor FFC as follows from the 80 digit side. 

80-digit side: Connect to the connector (CN5) on the Main Board and secure with double-sided tape at the point shown above.



Center:

Route along the folds of the Ink End Sensor FFC and secure with double-sided tape (x 2) at the points on the Front Frame shown above.



0-digit side:

Route along the folds of the Ink End Sensor FFC and through the hole on the Frame Base Assy, and then route through the hook.

Ink End Sensor FFC (2)

Cassette Sensor Frame Base Assy

Ink End Sensor FFC


Ink End Sensor FFC


Ink End Sensor Assy

Top

Ink End Sensor Assy

CN1 Bottom

Ink Supply Tank

Rib Hole Groove Rib Hook Cutout

Ink End Sensor FFC

Route the Cassette Sensor cable as shown below: 1. Route through the rib and into the hole on the bottom of the Frame Base Assy.

Route the Ink End Sensor FFC as shown below. 1. Route from the bottom of the Ink End Sensor Assy upward through the cutout. 2. Route through the rib (x 1) and hook (x 1) on the Ink End Sensor Assy, and then connect to the connector (CN1) as shown above.


Cassette Sensor

2. Pull out from the hole on the other side and route through the ribs (x 3) and grooves (x 2) on the Frame Base Assy.


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CHAPTER 3

ADJUSTMENT

CHAPTER 3

ADJUSTMENT

Confidential

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Revision B

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

When performing the adjustment with printing and feeding papers, conform information of paper in the printer to the size and type of paper set in the cassette.



After all required adjustments are completed, use the “Final check pattern print” function to print all adjustment patterns for final check. If you find a problem with the printout patterns, carry out the adjustment again.



When replacing the Main Board and the Printer Mechanism at the same time, the adjustment should be made after performing the initial setting.



The table items and marks used in the “Required Adjustment List” provided on the following pages have the following meanings. • “---” indicates that the adjustment is not required. • The “Mechanism Adjustment” should be performed just after reinstalling or reassembling the part or unit. • The “Adjustments using the Adjustment Program” need to be performed after reassembling the printer completely.



Adjustment

If you have removed or replaced multiple parts, make sure to check the required adjustments for the all parts. And when multiple adjustments must be carried out, be sure to carry out them in the order given in the “Priority” row.

Required Adjustments

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3.2 Adjustment Program This section provides the operating environment, functions related to safety and privacy policy, and the adjustment item newly added of the Adjustment Program. See "3.1 Required Adjustments (p55)" for the adjustments not explained here.

3.2.1 Operating Environment The operating environment for the Adjustment Program is as follows. 

OS:



Interface: USB

Windows Vista, 7, 8, 8.1

3.2.2 Details of the Adjustment Program Refer to the guide in the Adjustment Program for the details of the procedure.

Revision B

E pson E T-4550, L655/656

Revision B

3.2 Adjustment Program This section provides the operating environment, functions related to safety and privacy policy, and the adjustment item newly added of the Adjustment Program. See "3.1 Required Adjustments (p55)" for the adjustments not explained here.

3.2.1 Operating Environment The operating environment for the Adjustment Program is as follows. 

OS:



Interface: USB

Windows Vista, 7, 8, 8.1

3.2.2 Details of the Adjustment Program Refer to the guide in the Adjustment Program for the details of the procedure.

Adjustment

Adjustment Program

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3.2.2.1 CR Motor Heat Protection Control / PF Motor Heat Protection Control Purpose

To measure the manufacturing variations of the DC motors (CR Motor/PF Motor), Main Board and Power Supply Board to determine the correction value used for estimating the current values of the motors.

Risks if the adjustment is not correctly made

The printer cannot measure the current value of motor correctly, then the heat generation caused by motor drive cannot be estimated accurately either, and which may results in trouble such as incorrect control of motors when allotting a cool down period according to each heat generation. In the worst case, excessive heat generation may cause smoke or ignition.

Procedure

1. Select from the menu of the Adjustment Program. Check the check box of the replaced parts and press the “Perform” button to measure the correction value. 2. The correction value is automatically measured and the measurement value is written to the EEPROM on the Main Board.

Adjustment Program screen

Perform button

Perform button

Check the check box of the replaced parts.

Check the check box of the replaced parts.

---

Remarks

3.2.2.2 Scanner Motor Heat Protection Purpose Risks if the adjustment is not correctly made Procedure

To measure the manufacturing variations of the DC motors (Scanner Motor), Main Board and Power Supply Board to determine the correction value used for estimating the current values of the motors. The printer cannot measure the current value of motor correctly, then the heat generation caused by motor drive cannot be estimated accurately either, and which may results in trouble such as incorrect control of motors when allotting a cool down period according to each heat generation. In the worst case, excessive heat generation may cause smoke or ignition.

1. Select from the menu of the Adjustment Program. Check the check box of the replaced parts and press the “Perform” button to measure the correction value. 2. Turn off the printer and turn it back on. 3. The correction value is automatically measured and the measurement value is written to the EEPROM on the Main Board.

Adjustment Program screen

Perform button Check the check box of the replaced parts.

Remarks

Adjustment

---

Adjustment Program

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3.2.2.3 MAC Address Setting 

This setting is not necessary when the data in EEPROM on the Main Board can be read out.



To avoid a conflict of MAC address on a network, make sure to correctly follow the MAC address setting flowchart given on the following.



The user should be notified of the change of MAC address because of the following reasons. • If the user has set the printer’s MAC address on a router, the repaired printer with a new MAC address cannot be connected to the network. • The default printer name on a network consists of “EPSON” and the last six digits of the MAC address. Therefore, the printer name becomes different from the previous one.



You are required to enter the last six digits of the MAC address (xx:yy:zz) on the adjustment program. MAC address example: B0:E8:92:xx:yy:zz (“xx, yy, zz” represents a value unique to each printer) Last six digits of MAC address

MAC Address Label

Figure 3-1. MAC Address Label 

Setting procedure

1. After replacing the Main Board Assy*, note down the MAC address written on a label on the Housing Upper. 2. Connect the printer and the PC with the USB cable. 3. Start the adjustment program. 4. Select the “Initial Setting” from the menu. The initial setting screen appears. 5. Enter the last six digits of MAC address into the MAC address entry field, and click the Perform button. 6. Select the network status sheet print menu on the printer’s control panel, and print the sheet. Check the MAC address printed on the sheet to see if it is correct.

Figure 3-2. MAC Address Setting Screen

Adjustment

Adjustment Program

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Revision B

3.3 Details of Adjustments This section provides adjustment procedures for which explanation in details is necessary. See "3.1 Required Adjustments (p55)" for the adjustments not explained here.

3.3.1 Checking the Platen Gap This section describes the procedure for checking the platen gap (PG). 

The standard range of the PG is as follows: • Standard: 1.7 ± 0.14 mm

 

Check the platen gap before installing the CR Scale.

Tools 

Thickness gauges for PG check: 1.48 mm gauge, 1.76 mm gauge



Teflon tape: Commercially available product (thickness: 0.08 mm)

3.3.1.1 Preparation This section describes how and what to prepare for the preparation before starting t he PG check. 

Modification of the thickness gauges 

The Printhead of this printer has an integral structure of the Printhead Cover and Printhead nozzle surface. Therefore, if the thickness gauge touches the nozzle surface in the same way as performed in the traditional procedure, the nozzle surface may be damaged. When checking the platen gap, make sure to apply Teflon tape (thickness : 0.08 mm) on all the thickness gauges used for checking the Platen Gap in advance.



Use commercially available Teflon tape of 0.08 mm in thickness.



When applying Teflon tape on the thickness gauges, make sure no bubbles or foreign material remain under the tape.

[Bubbles] 

[Foreign material]

Application procedure of Teflon tape. 1. Clean the surfaces of the thickness gauge by using alcohol, and make sure no dirt or contamination remains on the surfaces. 2. Apply Teflon tape on the thickness gauge as shown below. Teflon tape

Thickness gauge

Figure 3-1. Modification of Thickness Gauge (1)

Adjustment

Details of Adjustments

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3. Fold the excess portions of Teflon tape along the edges of the thickness gauge, and trim the portions at about the center in the thickness direction of the sides. Before trimming

After trimming Fold the tape at the edge and trim it at the center in the thickness direction.

Thickness gauge

Teflon tape

Figure 3-2. Modification of Thickness Gauge (2) When trimming the Teflon tape, the teflon tape can be easily cut out by guiding the half thickness gauge.



Make sure to wear the heavy gloves to prevent the cutter from cutting the hand when trimming the Teflon tape.

4. Make sure any tears or burrs on the applied Teflon tape, then the modification of thickness gauges is complete.

Adjustment


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3.3.1.2 Confirmation procedure When performing the PG adjustment, make sure of the following. 

Make sure the parts assembled on the CR Unit are as follows. Part(s) to be assembled on the CR Unit: • Empty Adapters

Note "*":

Part(s) NOT to be assembled on the CR Unit • • • •

CR Scale Adapter Cover Tube Guide Sheet* Ink Supply Adapter Tube Assy*

Not necessarily removed from the printer if the part(s) is/are not assembled on the CR Unit.



Move the CR Unit by pulling the top of the CR timing belt.



Be careful not to damage the nozzle surface of the Printhead with the thickness gauge.



When make the Printhead touch the thickness gauge, be careful not to let the Printhead run onto the gauge.

1. Move the CR Unit in the middle of the printer. 2. Place the 1.48 mm thickness gauges protected with Teflon tape on the points shown below. 80-digit side

0-digit side

Thickness gauges

Thickness gauges

Figure 3-3. Position of the Thickness Gauge

3. Move the CR Unit to the right and to the left to make sure that the CR Unit does not touch the gauges. If it touches a gauge, the PG is narrower than the standard. In such a case, reassemble or replace the Printer Mechanism. 4. Move the CR Unit back in the middle of the printer and place the 1.76 mm thickness gauges protected with Teflon tape on the same points as in Step 2. 5. Move the CR Unit to the right and to the left to make sure that the CR Unit touches the gauges. If it does not touch any gauge, the PG is wider than the standard. In such a case, reassemble or replace the Printer Mechanism.

Adjustment


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CHAPTER 4

MAINTENANCE

Confidential

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4.1 Cleaning 4.1.1 Cleaning the nozzle plate section of the printhead







This cleaning should be carried out only if you can see foreign material on the nozzle plate of the printhead.



Make sure not to break the nozzle plate with excess force.



Make sure not to deform the head cover.



To prevent mixed colors, make sure to clean it parallel to the nozzle line.



Only wipe off where foreign material attaches, and do not touch the other sections to the utmost. If foreign material is big, make sure to wipe it off with a cle an part of a soft dry dust-free cloth in batches.



When cleaning the nozzle plate of the printhead, actual ink/pure water/CR02 can be used to enhance transcription. But, make sure not to use the undesignated liquid (tap water/ CR06) because they may have a negative influence i nfluence on the printhead filter.

Tools 

Soft dry dust-free cloth



Liquid (pure water/CR02)

Cleaning procedure 1. Remove foreign material by moving a soft dry dust-free cloth cloth slowly and lightly. Soft dry dust-free cloth

Nozzle plate

Head cover

Foreign material Clean it parallel to the nozzle line. Note:Actual Note:Actual ink/pure water/CR02 can be used used to enhance enhance transcription transcription of foreign material. material.

Mainte Maint ena nanc nce e

Clea Cle aning

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4.1.2 Cleaning the CR Unit In this product, ink may be attached on the CR Unit by structure s tructure of Printhead and CR Unit. So, head short circuit may arise due to ink attachment on the terminal of the head FFC when replacing the printhead.



This cleaning should be carried out only when replacing the printhead.



When installing the Printhead, make sure the Head FFC is not contaminated with ink beforehand.

Tool 





Cotton swab or soft dry dust-free cloth

Cleaning procedure 1. After pulling out the head FFC while while holding the printhead from the carriage, confirm the ink attachment on the CR Unit.

2. If ink attached on the CR Unit, Unit, wipe it off with a cotton swab (or a soft soft dry dust-free cloth).

Mainte Maint ena nanc nce e

Clea Cle aning

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4.1.3 Cleaning the Exterior Parts/inside of the printer This section describes how to clean the sections other than the carriage. 

Instructions for cleaning 

Exterior parts such as housing Wipe dirt off with a soft clean cloth moistened with water. For glossy or transparent parts, use of unwoven cloth is recommended to avoid scratching those parts.  Inside of the printer Remove paper dust with a vacuum cleaner.  Rubber or plastic rollers such as an Pickup Roller used to feed paper If paper dust adhered to the rollers decreases the frictional force of the rollers and the rollers cannot properly feed paper, wipe off the paper dust with a soft cloth moistened with diluted alcohol. 

Instructions for cleaning ink stains Wipe the stains off with a cloth wrung out of diluted alcohol. 

Do not use alcohol for cleaning the transparent parts. Doing so may cause them to get cloudy.



When wiping paper dust off the Pickup Roller/Middle Roller, be careful not to rub against the surface asperity.  To minimize the effect on the parts, use diluted alcohol such as 70% diluted ether.  After using alcohol for cleaning, make sure to wipe the part off with a soft dry dust-free cloth to alcohol traces fully.

Maintenance

Cleaning

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4.2 Lubrication The type and amount of the grease used to lubricate the printer parts are determined based on the results of the internal evaluations. Therefore, refer to "4.3 Lubrication Points and Instructions (p70)" for the repairing procedures below, and apply the specified type and amount of the grease to the specified part of the printer mechanism. "4.3 Lubrication Points and Instructions (p70)" also provides information about whether or not the parts which require lubrication are supplied as ASP and the lubrication status when supplied as ASP. For the parts which are not supplied as ASP, if their movement is not smooth enough, check their lubrication st atus and lubricate them if necessary. 



Grease Type

Name

EPSON Part Code

Supplier

Grease

G-45

1033657

EPSON

Grease

G-71

1480655

EPSON

Grease

G-72

1409258

EPSON

Grease

G-96

1590700

EPSON

Name

Availability

EPSON Part Code

Injector

O*

---

Brush

O*

---

Flux dispenser

O*

---

Tools

Note "*":

Maintenance

Use tools whose specifications are specified in "4.3 Lubrication Points and Instructions (p70)"

Lubri cation

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4.3 Lubrication Points and Instructions ADF Frame Assy

Supplied as the ADF Unit

Supplied as the Scanner Unit


Lubricated

Lubricated

Gear support shafts (3 points) on ADF Frame Assy and ADF Base Assy

Rail on Scanner Housing Lower Assy

G-45

G-71

Rail

0.03 g x 3 points

φ 1 mm x 5 mm x 3 points

1

3



Apply with injector and spread over entire circumference of the shafts.



2

Apply with injector. After application, spread with brush back and forth over entire rail in the order of [1] through [3] following the arrows.

ADF Base Assy Application Point

Application Point

Figure 4-1. Lubrication of the ADF Frame Assy

Figure 4-2. Lubrication of the Scanner Housing Lower Assy





Lubricated

Lubricated

1. Gear support shafts (2 points) on Scanner Carriage Unit

Grooves (4 points) on rail guide of Scanner Carriage Unit

2. Scanner motor pinion gear

G-45

Apply in grooves

G-45



Apply with injector.

1. Apply with injector and spread over entire circumference of the shafts with brush.

Scanner motor pinion gear

2. Apply with injector.

1. Application Point Application Point

2. Application Point

Figure 4-3. Lubrication of the Scanner Carriage Unit (1)


Maintenance

Lubrication Points and I nstructions

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Inside



Supplied as the Printer Mechanism

Lubricated

Lubricated

Installation position (7 points) for CIS module of Scanner Carriage Unit

1. Shaft of Bevel Gear Shaft 10.4

G-96 Bevel Gear Shaft 10.4

Appropriate amount 




Lubricated Contact points (2 points) with D/E Lever on Main frame

2. Contact points with Combination Gear 24,9.6

Inside

Main Frame

Apply with Flux Dispenser. Stir G-96 before use.

G-71

1. G-71

2. G-96

φ 0.5 mm x 10 mm

1. φ 1 mm x 10 mm

Spread over the specified areas with brush.

2. Appropriate amount 1. Apply with injector. 2. Apply with Flux Dispenser. Stir G-96 before use.

Application Point

1. Application Point 2. Application Point

Outside

Figure 4-6. Lubrication of the Bevel Gear Shaft 10.4

Figure 4-7. Lubrication of the Main Frame

Front Frame Rear

0-digit side

80-digit side

CR Unit

Front

Rear


(1)

Lubricated

Application Point

Contact points with CR Unit on Main Frame Assy (4 points) and on Front Frame (1 point)

Outside Front Frame

G-71 Front

Main Frame Assy 80-digit side

CR Unit

Front

Rear

0-digit side

(3)

(2)

EJ

Main Frame Assy

1. 1.15 g x 2 mm 2. 0.42 g x 2 mm 3. 0.63 g x 2 mm 4. 0.76 g x 2 mm 5. 0.40 g x 2 mm

(4)

 

(5)

Application Point


Maintenance

Apply with injector. After application, spread by moving CR Unit to the right and to the left (from 0-digit side to 80digit side)

Figure 4-8. Lubrication of the Main Frame Assy/Front Frame


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Inside




Lubricated

Lubricated

Installation position (7 points) for CIS module of Scanner Carriage Unit

1. Shaft of Bevel Gear Shaft 10.4

G-96 Bevel Gear Shaft 10.4

Appropriate amount 




Lubricated Contact points (2 points) with D/E Lever on Main frame

2. Contact points with Combination Gear 24,9.6

Inside

Main Frame


G-71

1. G-71

2. G-96

φ 0.5 mm x 10 mm

1. φ 1 mm x 10 mm


2. Appropriate amount 1. Apply with injector. 2. Apply with Flux Dispenser. Stir G-96 before use.

Application Point

1. Application Point 2. Application Point

Outside

Figure 4-6. Lubrication of the Bevel Gear Shaft 10.4

Figure 4-7. Lubrication of the Main Frame

Front Frame Rear

0-digit side

80-digit side

CR Unit

Front

Rear


(1)

Lubricated

Application Point

Contact points with CR Unit on Main Frame Assy (4 points) and on Front Frame (1 point)

Outside Front Frame

G-71 Front

CR Unit

Main Frame Assy

Front

Rear

0-digit side

80-digit side

(3)

(2)

1. 1.15 g x 2 mm 2. 0.42 g x 2 mm

EJ

Main Frame Assy

3. 0.63 g x 2 mm 4. 0.76 g x 2 mm 5. 0.40 g x 2 mm

(4)

 

(5)

Application Point


Apply with injector. After application, spread by moving CR Unit to the right and to the left (from 0-digit side to 80digit side)

Figure 4-8. Lubrication of the Main Frame Assy/Front Frame

Maintenance


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Driven Pulley Driven Pulley Holder



Lubricated

Lubricated

1. Inside of shaft hole on Driven Pulley

EJ Roller Gear


Lubricated EJ Roller

3. Contact points (6 points) with Main Frame on Driven Pulley Holder

2. Contact point with the PF Roller grounding spring

0.08 g

G-71

Apply with injector and spread over entire circumference of the shaft.

G-71

1. Appropriate amount (3 mm x 15 mm)

Spur Gear 12

φ 1 mm x 1 mm Spur Gear 12



Application Point

Application Point

Figure 4-10. Lubrication of the EJ Roller Gear

Figure 4-11. Lubrication of the PF Roller


Paper Guide Front

Application Point


2. After setting Driven Pulley in Driven Pulley Holder, wipe off excess grease.

Figure 4-9. Lubrication of the CR Driven Pulley Assy

Application Point

2. Appropriate amount (φ 1 mm x 5 mm)

Apply with injector. 1. Never lubricate on areas other than inside of shaft hole on Driven Pulley. 

Driven Pulley Holder

1. Gear of Spur Gear 12 on PF Roller

G-71 Driven Pulley Holder


Shaft of EJ Roller Gear

2. Bearings (2 points) of Driven Pulley Holder 1. Application Point



Paper Guide Front

Lubricated

Lubricated

Contact points (3 points) with PF Roller on Paper Guide Front

Contact points (8 points) with EJ Roller on Paper Guide Front

G-71

1. G-71

2. G-96

EJ Roller

φ 1 mm x 1mm

1. φ 2 mm x 2 mm


2. 0.04 g 1. Apply with injector. 2. Apply with Flux Dispenser. Stir G-96 before use.


Paper Guide Front


Figure 4-12. Lubrication of the Paper Guide Front (1)

Maintenance



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Driven Pulley Driven Pulley Holder



Lubricated

Lubricated

1. Inside of shaft hole on Driven Pulley

EJ Roller Gear


Lubricated EJ Roller

3. Contact points (6 points) with Main Frame on Driven Pulley Holder

2. Contact point with the PF Roller grounding spring

0.08 g

G-71


G-71

1. Appropriate amount (3 mm x 15 mm)

Spur Gear 12

φ 1 mm x 1 mm Spur Gear 12



Application Point

Application Point

Figure 4-10. Lubrication of the EJ Roller Gear

Figure 4-11. Lubrication of the PF Roller


Paper Guide Front

Application Point


2. After setting Driven Pulley in Driven Pulley Holder, wipe off excess grease.

Figure 4-9. Lubrication of the CR Driven Pulley Assy

Application Point

2. Appropriate amount (φ 1 mm x 5 mm)

Apply with injector. 1. Never lubricate on areas other than inside of shaft hole on Driven Pulley. 

Driven Pulley Holder

1. Gear of Spur Gear 12 on PF Roller

G-71 Driven Pulley Holder


Shaft of EJ Roller Gear

2. Bearings (2 points) of Driven Pulley Holder 1. Application Point



Paper Guide Front

Lubricated

Lubricated

Contact points (3 points) with PF Roller on Paper Guide Front

Contact points (8 points) with EJ Roller on Paper Guide Front

G-71

1. G-71 2. G-96

EJ Roller

φ 1 mm x 1mm

1. φ 2 mm x 2 mm


2. 0.04 g 1. Apply with injector. 2. Apply with Flux Dispenser. Stir G-96 before use.


Paper Guide Front




Maintenance


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None

None

---

---

Support shaft for Cassette Lock Lever of Frame Base

Contact points (12 points) with Cassette Assy on the rail of Frame Base

Paper Guide Front

Frame Base

Lubricated Support shaft for Combination Gear 16.10.4 on Paper Guide Front

Support shaft

G-71

G-96

G-71

Application Point

Appropriate amount

Application Point





Application Point

Appropriate amount

Appropriate amount




Application Point

Frame Base


Figure 4-15. Lubrication of the Frame Base Assy (1)


Cam slider rail

None

None

---

---

Paper Stopper Assy

Contact points with Cassette Assy on the bottom of Frame Base

1. Application Point 2. Application Point Bottom

1. Application Point 2. Application Point 3. Application Point

(3) Cross section view of application point

1. On sides x 2 2. On backface of ribs x 5

Slider Base

Cam slider rail (3 points) on Slider Base (a component of Paper Stopper Assy)

3. On slopes x 2

G-72

G-96

0.1 ± 0.05 g x 3points

Appropriate amount






Apply twice with Flux Dispenser. Stir G-96 before use.

Frame Base

Application Point


Maintenance

Figure 4-18. Lubrication of the Paper Stopper Assy


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None

None

---

---

Support shaft for Cassette Lock Lever of Frame Base

Contact points (12 points) with Cassette Assy on the rail of Frame Base

Paper Guide Front

Frame Base

Lubricated Support shaft for Combination Gear 16.10.4 on Paper Guide Front

Support shaft

G-71

G-96

G-71

Application Point

Application Point

Appropriate amount

Appropriate amount


Appropriate amount






Application Point


Application Point

Frame Base




Cam slider rail

None

None

---

---

Paper Stopper Assy

Contact points with Cassette Assy on the bottom of Frame Base 1. Application Point 2. Application Point 3. Application Point

1. Application Point 2. Application Point Bottom

(3) Cross section view of application point

1. On sides x 2 Slider Base

2. On backface of ribs x 5

Cam slider rail (3 points) on Slider Base (a component of Paper Stopper Assy)

3. On slopes x 2

G-72

G-96

0.1 ± 0.05 g x 3points

Appropriate amount






Apply twice with Flux Dispenser. Stir G-96 before use.

Frame Base

Application Point


Figure 4-18. Lubrication of the Paper Stopper Assy

Maintenance


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Combination Gear 24,9.6

Spur Gear 20.4

Application Point Application Point



Lubricated

Lubricated

Combination Gear 24,9.6 (2 points) and Spur Gear 20.4

Contact points with ADF Frame Assy and ADF Frame Lower Assy each other

G-96

G-96

Appropriate amount

Appropriate amount












ADF Frame Assy Application Point

Figure 4-19. Lubrication of the Combination Gear 24,9.6/Spur Gear 20.4

Maintenance

Figure 4-20. Lubrication of the ADF Frame Assy/ADF Frame Lower Assy

?? ?? ??

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Combination Gear 24,9.6

Spur Gear 20.4

Application Point



Lubricated

Lubricated

Combination Gear 24,9.6 (2 points) and Spur Gear 20.4

Contact points with ADF Frame Assy and ADF Frame Lower Assy each other

G-96

Application Point

G-96

Appropriate amount

Appropriate amount












ADF Frame Assy Application Point

Figure 4-19. Lubrication of the Combination Gear 24,9.6/Spur Gear 20.4

Maintenance

Figure 4-20. Lubrication of the ADF Frame Assy/ADF Frame Lower Assy

?? ?? ??

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4.4 Shipping Setting This section describes the shipping setting. 



Regarding Epson ET-4550, L655/656, Scanner CR moves to the 0-digit side after the initial ink charge compared with being at the 80-digits side in factory default. Scanner CR may fall by shocked in transportation and so on because there is no structure for scanner CR not to fall at the 80-digits side. Therefore, move the scanner CR of all repaired products to 0-digit side.

Object product All products



Setting procedure

1. Finish repairing, adjustment, printing inspection and so on before it is possible to ship products. 2. Start the adjustment program. 3. Select the “Shipping setting” from the menu. The shipping setting screen appears.

E pson E T-4550, L655/656

Revision B

4.4 Shipping Setting This section describes the shipping setting. 



Regarding Epson ET-4550, L655/656, Scanner CR moves to the 0-digit side after the initial ink charge compared with being at the 80-digits side in factory default. Scanner CR may fall by shocked in transportation and so on because there is no structure for scanner CR not to fall at the 80-digits side. Therefore, move the scanner CR of all repaired products to 0-digit side.

Object product All products



Setting procedure

1. Finish repairing, adjustment, printing inspection and so on before it is possible to ship products. 2. Start the adjustment program. 3. Select the “Shipping setting” from the menu. The shipping setting screen appears.

Perform button Check the check box of the replaced parts.

4. Check the checkbox of the “Scanner position set during transportation” and press the “Write” button. 5. Make sure the scanner CR moved to the 0-digit side when the shipping setting was finished.

Maintenance

Shipping Setting

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CHAPTER 55

APPENDIX

Confidential

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Revision B

5.1 Connector Diagram Cable connections of this printer are shown below. Ink End Sensor Assy Wireless LAN Module Panel Unit CR Unit

Speaker CN4

LCD

CN5

PW Sensor

Panel FFC CN3 CN4 CN1

CN2 CN2

CR Encoder Board CN17

Ethernet Module

CN14

CN11

CN1

Printhead

Main Board

AC in

PE Sensor

CN13

Cassette Sensor

CN16

PS Unit Fax Unit

CN1

CN10

PF Motor

CN501

CN9

CR Motor

CN1

CN6

PF Encoder ADF/Scanner Unit

CN72 CN1

CN71

CIS Module ADF PE Sensor

Fax Filter Board

Figure 5-1. Connector Diagram

Appendix

Connector Di agram

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5.2 Protection for Transportation This section describes the cautions for packing the printer before returning it to the user.

5.2.1 Securing the CR Unit 

Purpose To prevent damaging the CR Unit by s hock during transportation.



Risk if it is not performed. Fatal error caused by the damage of the CR Unit.



Preparation Strong tape (Length: 170 mm, width: 22 mm, fold on the end: 5 mm)



Method 1. Turn off the printer and move the CR Unit to the 0-digit side fully. 2. Attach the strong tape on the CR Unit as shown below to secure the CR Unit. After applying the strong tape, make sure no pieces of strong tape such as the one on the side of the CR Unit are peeled.


Strong tape

40 mm

Strong tape

Strong tape

Folded ends CR Unit

Figure 5-2. Securing the CR Unit

Appendix

Protection for Transportation

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L655 L656 Manual de Servicio

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