Epson ET-7700, L7160 Service Manual

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SERVICE MANUAL

Color Inkjet Printer

Epson ET-7700/L7160

CONFIDENTIAL

SEMF16-014

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Notice:

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

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

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

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

manual or the consequences thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

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

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

P-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 disconnect the product from the power source and peripheral devices when servicing the product or performing maintenance.

2. When performing works described in this manual, do not connect to a power source until instructed to do so. Connecting to a power source causes high voltage in the power supply unit and some electronic components even if the product power switch is off. If you need to perform the work with the power cable connected to a power source, use extreme caution to avoid electrical shock.

WARNING

Strictly observe the following cautions. Failure to comply may lead to personal injury or loss of life.

1. Always wear protective goggles for disassembly and reassembly to protect your eyes from ink in working. If any ink gets in your eyes, wash your eyes with clean water and consult a doctor immediately.

2. When using compressed air products; such as air duster, for cleaning during repair and maintenance, the use of such products containing flammable gas is prohibited.

PRECAUTIONS

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

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

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

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

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

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

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



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

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

slant insertion.

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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.

CHAPTER 1. TROUBLESHOOTING

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

CHAPTER 2. DISASSEMBLY / REASSEMBLY

Describes the disassembly/reassembly procedures for main parts/units of the product, and provides the standard operation time for servicing the product.

CHAPTER 3. ADJUSTMENT

Describes the required adjustments for servicing the product.

CHAPTER 4. MAINTENANCE

Describes maintenance items and procedures for servicing the product.

CHAPTER 5. APPENDIX

Provides the following additional information for reference:

 Connector Diagram  Protection for Transportation

Symbols Used in this Manual

Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Pay attention to all symbols when they are used, and always read explanation thoroughly and follow the instructions.

Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in serious injury or loss of life.

Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed, could result in bodily injury, damage or malfunction of equipment.

May indicate an operating or maintenance procedure, practice or condition that is necessary to accomplish a task efficiently. It may also provide additional information that is related to a specific subject, or comment on the results achieved through a previous action.

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

Procedures (p31)".

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Revision Status

Revision Date of Issue Description

A 2017.3.24 First Release

B 2017.11.14 Addition of Printer Inspection Mode (Service Mode).

C 2018.5.1 Addition of caution in 2.3.2.1 Procedure 1, 2.3.2.2 Procedure 2 of 2.3.2 Required work before

disassembling Adapter Assy and in 2.3.3 Required work before disassembling Ink tank

Addition of caution about performing Ink flushing in 2.3.2.1 Procedure 1 of 2.3.2 Required work before disassembling Adapter Assy

Addition of caution about Ink charge in 3.1 Required Adjustments

Addition of required adjustment for removing and replacing PW sensor in 3.1 Required Adjustments

D 2018.7.24 Addition of product name.

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Epson ET-7700/L7160

Chapter 1 Troubleshooting

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

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

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

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

1.3.1 Displaying the Fatal Error Code..................................................................................................................... 15

1.3.2 Printer Fatal Error Code ................................................................................................................................. 16

Chapter 2 Disassembly/Reassembly

2.1 Overview ................................................................................................................................................................. 21

2.1.1 Tools ............................................................................................................................................................... 21

2.1.2 Jigs .................................................................................................................................................................. 21

2.1.3 Locations of the Parts/Units ........................................................................................................................... 22

2.1.4 Standard Operation Time for Servicing the Product ...................................................................................... 25

2.2 Common cautions when disassembling/reassembling the Product ......................................................................... 29

2.3 Disassembly/Reassembly Procedures ..................................................................................................................... 31

2.3.1 Parts/units to be removed before disassembly and reassembly...................................................................... 31

2.3.2 Required work before disassembling Adapter Assy....................................................................................... 32

2.3.2.1 Procedure 1 ............................................................................................................................................ 32

2.3.2.2 Procedure 2 ............................................................................................................................................ 33

2.3.3 Required work before disassembling Ink tank ............................................................................................... 35

2.3.4 Printer Inspection Mode (Service Mode) ....................................................................................................... 37

2.3.5 Disassembly Flowchart................................................................................................................................... 38

2.3.5.1 Disassembly Flowchart (ET-7700/L7160) ............................................................................................ 39

2.4 Detailed Disassembly/Reassembly Procedure for each Part/Unit........................................................................... 47

2.5 Routing FFCs/cables ............................................................................................................................................... 54

Revision D

Contents

Chapter 3 Adjustment

3.1 Required Adjustments ............................................................................................................................................. 60

3.2 Adjustment Program................................................................................................................................................ 69

3.2.1 Operating Environment .................................................................................................................................. 69

3.2.2 Details of the Adjustment Program ................................................................................................................ 69

3.2.2.1 CR Motor Heat Protection Control / PF Motor Heat Protection ........................................................... 69

3.2.2.2 Scanner Motor Heat Protection.............................................................................................................. 70

3.2.2.3 Photo sensor light level adjustment ....................................................................................................... 70

3.2.2.4 Initialize PW deterioration offset........................................................................................................... 71

3.2.2.5 MAC Address Setting ............................................................................................................................ 72

3.2.2.6 Head angular adjustment ....................................................................................................................... 73

3.3 Mechanism Adjustment / Check ............................................................................................................................. 74

3.3.1 Checking the Platen Gap ................................................................................................................................ 74

3.3.1.1 PG Adjustment procedure...................................................................................................................... 74

3.3.1.2 Preparation ............................................................................................................................................. 75

3.3.1.3 Adjustment procedure ............................................................................................................................ 76

Chapter 4 Maintenance

4.1 Overview ................................................................................................................................................................. 79

4.1.1 Cleaning the Printhead.................................................................................................................................... 79

4.1.1.1 Cleaning the printhead filter .................................................................................................................. 80

4.1.1.2 Cleaning the seal rubber section of the printhead.................................................................................. 81

4.1.1.3 Cleaning the nozzle plate section of the printhead ................................................................................ 82

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Epson ET-7700/L7160

4.1.2 Cleaning the Carriage ..................................................................................................................................... 83

4.1.3 Cleaning the Exterior Parts/inside of the printer ............................................................................................ 84

4.2 Lubrication .............................................................................................................................................................. 85

4.2.1 Lubrication Points and Instructions................................................................................................................ 86

Chapter 5 Appendix

5.1 Connector Diagram ................................................................................................................................................. 93

5.1.1 Connector Diagram for ET-7700/L7160 ........................................................................................................ 93

5.2 Protection for Transportation .................................................................................................................................. 94

5.2.1 Securing the CR Unit...................................................................................................................................... 94

5.2.2 Securing the Duplex Unit ............................................................................................................................... 95

5.2.3 Securing the SCN ........................................................................................................................................... 96

Revision D

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CHAPTER 1

TROUBLESHOOTING

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Epson ET-7700/L7160

Printer failure only

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

Finish

Does the printer work

without any other trouble?

Yes

Is scanning operation

finished without

trouble?

What is returned reason?

Print check pattern

Yes

Is Power-on sequence

finished without error?

Does the printer enter

standby state without error?

Does an error occur

when printing?

Start

Turn on the power

Does printer turn on the

power?

Yes

Is printing operation

finished without trouble?

(p 11)

(p 12)

(p 11)

Copy an image

(p 11)

Yes

(p 11)

1.1 Troubleshooting

This section describes the troubleshooting workflow and fatal error information.

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 the product.

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

then proceed to the troubleshooting.

Revision D

Figure 1-1. Troubleshooting Workflow (1)

Troubleshooting Troubleshooting Workflow 10

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Epson ET-7700/L7160 Revision D

No Power

[Presumable Cause]

• PS Unit damage

• Main Board damage

• Panel Board damage

[Major Troubleshooting]

• PS Unit replacement

• Main Board replacement

• Panel Board replacement

The power-on sequence does not start

(p 10)

Please refer to " 1.3 Fatal Error

Code List (p15)".

Fatal error

Error is indicated during power-on

sequence.

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

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

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

4 5

(p 10)

Maintenance error

[Occurrence Condition]

This error occurs when maintenance counter in the Maintenance Box exceeds the specified value or when the counter for waste ink pad for borderless printing in the printer exceeds the specified value.

[Major Occurrence Timing]

• Power-on timing

• Print start timing

• Paper eject timing

• Cleaning timing

[Troubleshooting]

Maintenance Box

• Maintenance Box replacement Borderless printing waste pad

• Borderless printing waste pad replacement

• Maintenance counter reset

Ink End error

[Occurrence Condition]

This error occurs when the ink consumption counter reaches the threshold value of ink end.

[Major Occurrence Timing]

• Power-on timing

• Print start timing

• Paper eject timing

• Cleaning timing

[Troubleshooting]

Ink counter reset (to reset ink remaining amount)

Paper Jam error

[Occurrence Condition]

This error occurs when PW Sensor or CR Motor does not work.

[Major Occurrence Timing]

Power-on timing

[Troubleshooting]

• PW Sensor FFC reconnection

• PW Sensor replacement

• CR Motor cable reconnection

• CR Motor replacement

Scanning cannot be performed successfully

(p 10)

Printer does not enter standby state normally. (p 10)

2nd Bin

[Presumable Cause]

2nd bin is ejected.

[Major Occurrence Timing]

Power-on timing

[Major Troubleshooting]

• 2nd bin detection sensor FFC reconnection

• 2nd bin detection sensor replacement

Other errors

(p 10)

Maintenance Box

[Presumable Cause]

Message indicating Maintenance Box is not installed appears.

[Major Occurrence Timing]

Power-on timing

[Major Troubleshooting]

• Maintenance Box Installation

• Ink Eject CSIC Cable reconnection

• CSIC Connector replacement

Poor Printing

[Phenomenon]

• Poor printing quality

• Ink stain on paper

•Dot missing

• Paper eject without printing

• Blank page

[Presumable Cause]

• Driver / Panel mis-setting

• Contamination of CR scale

• Contamination of PF Roller

• Contamination of Printhead cover

• Printhead damage

• Ink clogging of Printhead

• Contamination on Cap Unit / Wiper of Ink System Assy

• Ink System Assy damage

• Float of Porous Pad on Paper Guide Front

• Narrower PG

• PE Sensor damage

• PW Sensor damage

• PE Sensor FFC connection failure

• ASF PE Sensor FFC connection failure

• ASF PE Sensor damage

• Adapter tube is caught or pressed flat

• Air chamber tube is caught or pressed flat

• Air Chamber Ink Supply ventilation film is wet with ink

[Major Troubleshooting]

• Driver / Panel re-setting

• CR Scale replacement

• Printhead cover cleaning

• Printhead cleaning

• Printhead replacement

• Rubber cleaning of Cap Unit

• Ink System Assy replacement

• Porous Pad re-installation

• Printer Mechanism replacement

• PE Sensor replacement

•PG readjustment

• PW Sensor replacement

• Main Board replacement

• PE Sensor FFC reconnection

• ASF PE Sensor FFC reconnection

• ASF PE Sensor replacement

• Improve Adapter tube’s pressed or caught condition

• Improve Air chamber tube’s pressed or caught condition

• Air Chamber Ink Supply replacement

Poor Paper Loading

[Presumable Cause]

• Use of 3rd party media

• Edge guide mis-setting

• Foreign material

• Part come-off

• Contamination of paper feed roller on Pickup Roller or Duplex Unit

• Paper Cassette Assy damage

• Contamination of PF Roller

[Major Troubleshooting]

• Recommendation of EPSON media

• Edge guide re-setting

• Foreign material removal

• Part re-installation

• Pickup Roller replacement

• Duplex Unit replacement

• Paper Cassette Assy replacement

• Printer Mechanism replacement

Abnormal Noise

[Presumable Cause]

• Foreign material

• Insufficient grease

•Gear damage

[Major Troubleshooting]

• Foreign material removal

• Lubrication of grease

• Gear replacement

Other Errors

[Presumable Cause]

Message that prompts the user to pull out the stacker does not appear even though the stacker is retracted.

[Major Troubleshooting]

• Stacker open sensor cable reconnection

• Stacker open sensor replacement

Scanner failure

[Presumable Cause]

• Contamination of Scanner Glass

• Contamination of Document Pad

• CIS Unit damage

• Contamination of Scanner Motor encoder scale

• Scanner Motor encoder damage

• Scanner Motor damage

[Major Troubleshooting]

• Scanner Glass cleaning

• Document Pad cleaning

• Document Pad Assy replacement

• CIS Unit replacement

• Scanner Motor encoder cleaning

• Scanner Motor encoder replacement

• Scanner Motor replacement

Tank Cover

[Presumable Cause]

Message that prompts the user to refresh ink remaining information does not appear even though Tank Cover Assy is opened.

[Major Troubleshooting]

• Cover Tank open sensor cable reconnection

• Cover Tank open sensor replacement

1st Bin

[Presumable Cause]

Message that prompts the user to set paper does not appear even though 1st bin is removed.

[Major Troubleshooting]

• 1st bin detection sensor FFC reconnection

• 1st bin detection sensor replacement

Figure 1-2. Troubleshooting Wo rkflow (2)

Troubleshooting Troubleshooting Workflow 11

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Epson ET-7700/L7160 Revision D

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

Paper Jam error

[Occurrence Condition]

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

[Major Occurrence Timing]

• Power-on timing

• Paper loading timing

• Paper eject timing

[Major Troubleshooting]

1 Push “Start” button after the

jammed paper in printer mechanism is removed.

2 If this error occurs again,

check foreign materials / parts come-off / parts damage / parts deformation in paper path.

3 If this is not solved by 2),

check the following parts.

• ASF PE sensor (Paper Guide Rear ASF Assy)

•PE sensor

• Main board

*If this error occurs during auto

duplex print operation, printer stops

and ejects the paper automatically

even if the printing is not com-

pleted.

No Paper error

[Occurrence Condition]

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

[Major Occurrence Timing]

• Paper loading timing (Front / Rear)

[Major Troubleshooting]

1 Set paper in Cassette Assy and

push “Start” button.

2 If this error occurs again,

check foreign materials / parts come-off / parts damage / parts deformation in paper path.

3 If this is not resolved by 2),

check the following parts.

• Pickup Roller

• Cassette Assy

• Duplex unit

• APG Lever & Gears

• ASF PE Sensor (Paper Guide Rear ASF Assy)

• PE Sensor

• Main Board

•PF Motor

Double Feed error

[Occurrence Condition]

This error occurs on the following cases.

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

• Actual paper length is longer than theoretical one.

[Major Occurrence Timing]

• Print start timing

[Troubleshooting]

• PE Sensor replacement

• PW Sensor replacement

• Main Board replacement

*This error occurs only for manual duplex print.

Paper Size Unmatch error

[Occurrence Condition]

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

[Major Occurrence Timing]

• Duplex print timing

• Paper eject timing

[Troubleshooting]

• PE Sensor replacement

• PW Sensor replacement

• Main Board replacement

Paper Detection Size error

[Occurrence Condition]

This error occurs when the actual paper size is not matched to the theoretical one. (It occurs when the gap between the actual paper size and the specified one is bigger than

[Major Occurrence Timing]

• Print start timing

[Troubleshooting]

• PE Sensor replacement

• PW Sensor replacement

• Main Board replacement

 4mm.)

(except for Duplex print)

Stacker Open error

[Occurrence Condition]

This error occurs when the stacker open condition is not detected by stacker open sensor.

[Major Occurrence Timing]

• Power-on timing

• Print start timing

• Paper eject timing

[Troubleshooting]

• Stacker Assy replacement

• Paper Guide Front Assy replacement

• Main Board replacement

Disc error

[Occurrence Condition]

This error occurs when media is not detected properly by PW sensor.

[Major Occurrence Timing]

• Print start timing (CD-R printing)

[Troubleshooting]

• PW Sensor replacement

• Main Board replacement

Disc Tray error

[Occurrence Condition]

This error occurs when CD-R tray is not detected properly by PW sensor.

[Major Occurrence Timing]

• Print start timing (CD-R printing)

[Troubleshooting]

• PW Sensor replacement

• Main Board replacement

Stacker Close error

[Occurrence Condition]

This error occurs when stacker is not detected by stacker close sensor.

[Major Occurrence Timing]

• Print start timing (CD-R printing)

[Troubleshooting]

• Stacker Close Sensor replacement

• Main Board replacement

CD-R Request error

[Occurrence Condition]

This error occurs when printer does not receive the signal to begin CD-R tray feed.

[Major Occurrence Timing]

• Print start timing (CD-R printing)

[Troubleshooting]

• Main Board replacement

Figure 1-3. Troubleshooting Wo rkflow (3)

Troubleshooting Troubleshooting Workflow 12

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Epson ET-7700/L7160

080

CR Unit

APG lever CR Lock

PGTyp.

PG++

080 HP

PGTyp.

PG++

080 HP

PGTyp.

PG++

1.2 Power-On Sequence

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

 Condition: Power-on sequence (See Table 1-1.)



No error occurred when you turned on the printer last time and it has been correctly turned off.

 Initial ink charge has finished and every cartridge has sufficient ink.  No paper on the paper path.  The Printhead is capped.  The Carriage is normally fixed by the CR Lock.  Maintenance error recovery has never been performed.  1st Cassette Assy is in front of the printer.  Rear paper load cover is closed.  CD-R tray is not inserted.

Table 1-1. Condition 1: Normal Power-on Sequence

Operation

1. Printhead initialization and fuse inspection

1-1.Initializes the Printhead, and checks for the fuse on the circuit boards in the printer.

2. Checking for waste ink overfl ow

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

Revision D

CR Unit/PF Roller

movement and

position

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.The CR Unit moves to the 80-digit side slowly and stops near the right side of the Paper Guide Front Assy and

confirms it does not touch the foreign material, such as remaining paper.

4-3.The PF Motor rotates clockwise so that the APG Lever is reset securely.

4-4.The CR Unit moves to the home position quickly.

4-5.The distance from the position where the CR Unit touched to the Left Frame is regarded as the standard distance

from the origin position, and the home position is fixed. From then on, the CR Unit position is monitored according to the signals from the CR Encoder.

4-6.The CR Unit moves to the home position slowly.

5. Low temperature operation sequence *

5-1.The CR Unit moves back and forth quickly between the CR Unit and near the left frame for two times.

6. APG Shift Operation

6-1.The CR Unit moves to near the left frame quickly.

6-2.The PF Motor rotates counterclockwise to set the APG Lever.

6-3.The CR Unit moves to the 0-digit side slowly to set PG from PG++ to PG Typ.

6-4.The CR Unit moves to near the left frame quickly.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

Troubleshooting Power-On Sequence 13

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Table 1-1. Condition 1: Normal Power-on Sequence

6-5.The PF Motor rotates clockwise to reset the APG Lever.

7. CR lock setting

7-1.The CR Unit moves to the home position.

7-2.The PF Motor rotates counterclockwise to lock the CR Unit with the CR Lock.

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

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

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

• CR lock Red: CR lock is set White: CR lock is released

• APG Lever Red: APG Lever is set (PG can be changed) White: APG Lever is reset

*3: The fatal error occurs if there is a problem such as the fuse blew.

*4: Executed when the detected temperature is under 5

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

Operation

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

Revision D

CR Unit/PF Roller

movement and

position

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

080 HP

PG++

PGTyp.

 The printer operation related to the maintenance error recovery is as follows.

• When the waste ink counter reaches the threshold value (1) for the first time and the maintenance error occurs, the counter threshold of the maintenance error is changed to threshold value 2 after performing recovery from the maintenance error.

• After the threshold value (2) is enabled, the warning; to notify the possibility of ink leakage out of the printer, is displayed every time the waste ink counter increases by 5%.

• If the waste ink counter reaches the threshold value (2), the maintenance error occurs. Then, the waste ink counter is changed back to the threshold value (1) after recovering from the maintenance error, and the warning is displayed repeatedly according to the increment of the waste ink counter until the maintenance error occurs when the threshold value (2) is reached. (Recovery from the maintenance error can be performed up to the specified number of times.)

Troubleshooting Power-On Sequence 14

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Epson ET-7700/L7160

Error Code

LCD display screen image

1.3 Fatal Error Code List

This section describes how to check the fatal error code, description, and the possible causes.

1.3.1 Displaying the Fatal Error Code

The fatal error code is stored in the EEPROM on the Main Board and can be read out using the Adjustment Program. This product displays a printer fatal error code automatically on the panel LCD when a printer fatal error occurs.

Revision D

Figure 1-2. Displaying the Fatal Error Code

Troubleshooting Fatal Error Code List 15

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Epson ET-7700/L7160

1.3.2 Printer Fatal Error Code

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

Revision D

Error type

Scanner

Error

code

100016 HP detection failure

100017 Contact detection distance exceeded

100018

100019

100020 Measurement error

100032 LED light failure

100065 FB PID excess speed

100066 FB PID reverse

100067 FB PID lock

100068 FB PID acceleration lock

100069 FB PID excess load

100070 FB PID driving time

Opposite side contact detection distance exceeded

Wrong opposite side contact detection distance

Error name Possible cause

White reference or origin pattern could not be read.

• CIS Unit failure

• Scanner Housing failure

• Main Board failure

• Scanner FFC(CIS) bad contact, broken

FB CR can not contact to origin position.

• CR-related gears broken

• Timing belt broken

• Main Board failure (operation in out of control)

Detected abnormal of motor drive load.

• Overloaded of driving mechanism

CIS module LED failure

• CIS module FFC bad contact, broken

• CIS module failure

• Main Board failure

FB CR Motor was driven at a speed faster than predetermined one.

• FB CR Encoder failure (contaminated bad contact, Encoder Board failure)

• FB CR Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

Detects that FB CR Motor is being driven in opposite direction to specified driving direction.

• FB CR Encoder failure (contaminated scale, Encoder Board failure)

• FB CR Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

FB CR Motor does not rotate.

• FB CR Encoder failure (contaminated scale, Encoder Board failure)

• FB CR Encoder Cable bad contact, broken, disconnected

• FB CR Motor failure

• Foreign material

• Main Board failure

• Locking of FB CR mechanism

FB CR Motor does not rotate.

• FB CR Encoder failure (contaminated scale, Encoder Board failure)

• FB CR Encoder Cable bad contact, broken, disconnected

• FB CR Motor failure

• Foreign material

• Main Board failure

• Locking of FB CR mechanism

Rotation speed of FB CR is different from specified speed.

• FB CR Encoder failure (contaminated scale, Encoder Board failure)

• FB CR Encoder Cable bad contact, broken, disconnected

• FB CR Motor failure

• Foreign material

• Main Board failure

• Overloaded of FB CR mechanism

Detects that driving period of FB CR is irregularly long.

• Firmware failure, runaway

• Main Board failure (if error recurs in power ON/OFF)

Troubleshooting Fatal Error Code List 16

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Revision D

Error type

Scanner

Printer

Error

code

100073 FB BS+ excess speed

100074 FB BS+ reverse

100075 FB BS+ lock

100077 FB BS+ excess load

100078 FB BS+ driving time

000020 CR PID excess driving time error

000021 CR PID excess load error

000022 CR PID excess speed error

000023 CR PID reverse error

000024 CR PID lock error

Error name Possible cause

FB CR Motor was driven at a speed faster than predetermined one during high-resolution scanning.

• FB CR Encoder failure (contaminated scale, Encoder Board failure)

• FB CR Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

Detects that FB CR Motor is being driven in opposite direction to specified driving direction during high-resolution scanning.

• FB CR Encoder failure (contaminated scale, Encoder Board failure)

• FB CR Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

FB CR Motor does not rotate during high-resolution scanning.

• FB CR Encoder failure (contaminated scale, Encoder Board failure)

• FB CR Encoder Cable bad contact, broken, disconnected

Rotation speed of FB CR is different from specified speed during high-resolution scanning.

• FB CR Encoder failure (contaminated scale, Encoder Board failure)

• FB CR Encoder Cable bad contact, broken, disconnected

• FB CR Motor failure

•Foreign material

• Main Board failure

• Overloaded of FB CR mechanism

Detects that driving period of FB CR is irregularly long during high-resolution scanning.

• Firmware failure, runaway

• Main Board failure (if error recurs in power ON/OFF)

Detects that driving period of CR is irregularly long.

• Firmware failure, runaway

• Main Board failure (if error recurs in power ON/OFF)

Rotation speed of CR is different from specified speed.

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

• CR Encoder Cable bad contact, broken, disconnected

• CR Motor failure

•Foreign material

• Main Board failure

• Overloaded of CR mechanism

CR Motor was driven at a speed faster than predetermined one.

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

• CR Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

Detects that CR Motor is being driven in opposite direction to specified driving direction.

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

• CR Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

CR Motor does not rotate.

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

• CR Encoder Cable bad contact, broken, disconnected

• CR Motor failure

•Foreign material

• Main Board failure

• Locking of CR mechanism

Troubleshooting Fatal Error Code List 17

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Revision D

Error type

Printer

Error

code

000025 CR PID speed fall error

000030

000031 CR load position excess load error

000032 CR load position excess speed error

000033 CR load position reverse error

000040 PF PID driving time error

000041 PF PID excess load error

000042 PF PID excess speed error

000043 PF PID reverse error

000044 PF PID lock error

CR load position excess driving time error

Error name Possible cause

Rotation speed of CR is slower than specified speed.

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

• CR Encoder Cable bad contact, broken, disconnected

• CR Motor failure

• Foreign material

• Main Board failure

• Overloaded of CR mechanism

Detects that driving period of CR is irregularly long (in specific slow speed rotation).

• Firmware failure, runaway

• Main Board failure (if error recurs in power ON/OFF)

Rotation speed of CR is different from specified speed (in specific slow speed rotation).

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

• CR Encoder Cable bad contact, broken, disconnected

• CR Motor failure

• Foreign material

• Main Board failure

• Overloaded of CR mechanism

CR Motor was driven at a speed faster than predetermined one (in specific slow speed rotation).

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

• CR Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

Detects that CR Motor is being driven in opposite direction to specified driving direction (in specific slow speed rotation).

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

• FB CR Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

Detects that driving period of PF is irregularly long.

• Firmware failure, runaway

• Main Board failure (if error recurs in power ON/OFF)

Rotation speed of PF is different from specified speed.

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

• PF Encoder Cable bad contact, broken, disconnected

• PF Motor failure

• Foreign material

• Main Board failure

• Overloaded of PF mechanism

PF Motor was driven at a speed faster than predetermined one.

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

• PF Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

Detects that PF Motor is being driven in opposite direction to specified driving direction.

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

• PF Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

PF Motor does not rotate.

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

• PF Encoder Cable bad contact, broken, disconnected

• PF Motor failure

• PF Motor cable bad contact, broken

• Foreign material

• Main Board failure

• Locking of PF mechanism

Troubleshooting Fatal Error Code List 18

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Revision D

Error type

Printer

System error

Error

code

Error name Possible cause

Detects that driving period of PF is irregularly long (in specific slow

000050

PF load position excess driving time error

speed rotation).

• Firmware failure, runaway

• Main Board failure (if error recurs in power ON/OFF)

Rotation speed of PF is different from specified speed (in specific slow speed rotation).

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

000051 PF load position excess load error

• PF Encoder Cable bad contact, broken, disconnected

• PF Motor failure

• Foreign material

• Main Board failure

• Overloaded of PF mechanism

PF Motor was driven at a speed faster than predetermined one (in specific slow speed rotation).

000052 PF load position excess speed error

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

• PF Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

Detects that PF Motor is being driven in opposite direction to specified driving direction (in specific slow speed rotation).

000053 PF load position reverse error

030001 PE Detector error • PE Detector failure (in Photo sensor light level adjustment)

030002 PW Detector insufficient light error • PW Detector failure (in Photo sensor light level adjustment)

030003 PE Detector insufficient light error • PE Detector failure (in Photo sensor light level adjustment)

031001 Head hot detect error (pre printing)

031002 Head hot detect error (after flushing)

031003 Transistor temperature error

031004 Head temperature error

031006 Blown headfuse error • Headfuse has blown.

033002 ASIC access error

033004 Fatal error when sending SC

033006 Read parity error

033007 Write parity error

033008 Access mismatch error • Bug of firmware

202620 Wireless board failure • Wireless board is broken.

205102 Card board failure

20**** Firmware failure • Firmware is abnormal.

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

• PF Encoder Cable bad contact, broken

• Main Board failure (board control runaway, noise)

• Printhead failure

• Main Board failure

• Printhead failure

• Main Board failure

• Head FFC(CN42) bad contact, broken

• Main Board failure

• Disconnection or slant connection of FFC

• Main Board failure

• Disconnection or slant connection of FFC

• Main Board failure

• Disconnection or slant connection of FFC

• Main Board failure

• Disconnection or slant connection of FFC

• Card slot board is broken.

• Card slot FFC bad contact, broken

Troubleshooting Fatal Error Code List 19

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CHAPTER 2

DISASSEMBLY/REASSEMBLY

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2.1 Overview

This chapter describes procedures for disassembling the main parts/units of this product. 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 (p47)".

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 ---

Acetate tape --- 1003963

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

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

Revision D

2.1.2 Jigs

Name Quantity EPSON Part Code

Thickness gauge (1.1 mm) 2 Commercially available

Thickness gauge (1.3 mm) 2 Commercially available

Box to adjust the height of Ink System Assy (H: approx. 9 mm)

1 Can be made with a commercial item.

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Front

Right

Left

Rear

2.1.3 Locations of the Parts/Units

This section shows the locations of the main parts/units of this product.

The parts/units which can not be seen in the following pictures are indicated in dotted lines ().

 Exterior parts

Revision D

No. Name No. Name

1 Scanner Unit (p39)/SCN Document Cover Assy (p39) 8 Housing Upper (p39)

2 Tank Cover Assy (p44)/Tank Cap Assy (p44) 9 USB Cover (p39)

Tank Housing Assy (p44)/Ink Supply Tank 100 (p45)/

Tank Unit 50 (p45)

4 Panel Assy (p43) 11 Duplex Unit (p43)

5 Left Bottom Housing (p40) 12 Paper Guide Rear ASF Assy (p41)

Left Bottom Housing Assy (p40)/Front Left Housing

Disassembly/Reassembly Overview 22

Assy (p43)/Card Slot Board (p43)/Wireless LAN Module (p43)/Sub Board Assy (p43)

Right Frame Base Assy (p44)/Air Chamber Tube Assy

(p45)/CSIC Cable Holder Assy (p45)

Figure 2-1. Exterior Parts

Left Frame Base Assy (w/Main Board) (p40)

Maintenance Box Cover (p39)/Maintenance Box (p39)

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 Printer mechanism

No. Name No. Name

1 Star Wheel Holder Assy (p41) 7 Adapter Assy (p39)

2 CR Scale (p40) 8 Printhead (p39)

Revision D

3 Paper Guide Upper Assy (p40) 9 Head FFC Assy (p40)

4 Paper Guide Front Assy (p41) 10 Adapter Tube S/L (p45)

5 CR Guide Rail Assy (w/CR Unit) (p41) 11 Power Supply Board Assy (p45)

6 CR Cover (p39)

Figure 2-2. Printer Mechanism: Front

No. Name No. Name

Tank Cover Open Sensor (p44)

2 PE Sensor Assy (p43) 5 Air Chamber Tube Assy (p45)

3 Holder Cam Assy (p43) 6 Ink System Assy (p40)

Figure 2-3. Printer Mechanism: Right

Air Chamber Ink Supply 50 (p45)/Air Chamber Ink

Supply 100 (p45)

Disassembly/Reassembly Overview 23

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No. Name No. Name

1 PW Sensor (p39) 5 APG Lever/ Gear’s (p41)

Revision D

2 Paper Guide Lower Porous Pad (p41) 6 Relay Board A (p40)

3 Relay Board B (p40) 7 Wireless LAN Module (p43)

4 PF Encoder Sensor (p40) 8 Card Slot Board (p43)

Figure 2-4. Printer Mechanism: Left

No. Name No. Name

1 Maintenance Box (p39) 2 Pick up Roller Assy (p39)

Figure 2-5. Printer Mechanism: Rear

Disassembly/Reassembly Overview 24

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2.1.4 Standard Operation Time for Servicing the Product

The following are the standard operation time for servicing the product. This standard operation time was determined with the MTTR result measured using the prototype of ET-7700/L7160 which have the most functions.

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

Table 2-1. Standard Operation Time

Time (mm:ss)

Parts/Unit

Replacement

USB Cover 0:25 0:25

SC Lower Rear Left Housing

SC Document Cover Spacer 4:06 4:06

SC Lower Rear Right Housing

Document Cover Assy

Pick Up Roller Assy

CR Cover 0:42 0:42

Adapter Assy 1:20 1:20

Adapter

Adapter Pressing Plate

Rubber Seal

Print Head3

PW Sensor

Front Top Housing

SC Upper Housing Cover Cap

SCN Unit

SCN Upper Housing 4:41 4:41

CIS Module Unit 5:04 5:04

Spacer (x2) 4:57 4:57

CIS Module 4:57 4:57

SCN CR Unit 5:19 5:19

SCN Motor 7:35 0:58 8:33

CIS Holder Unit 7:35 7:35

SCN Housing Lower 5:19 5:19

Hinge 3:53 3:53

Hinge Assy 3:53 3:53

Hinge

Hinge Holder

Housing Upper Assy

Maintenance Box Assy Cover

Maintenance Box 0:24 0:24

Stacker Frame 1:20 1:20

Main Stacker

Tank Housing Assy 6:46 6:46

Front Lower Left Housing 7:57 7:57

Front Left Housing Assy

3:58 3:58

3:54 3:54

4:59 4:59

0:18 0:18

1:30 1:30

1:45 1:45

3:12 19:32 22:44

3:48 2:48 6:36

0:36 0:36

0:12 0:12

3:31 0:58 4:29

4:03 4:03

5:57 5:57

4:29 4:29

1:29 1:29

6:26 6:26

Adjustment/

inspection

Revision D

Total

Disassembly/Reassembly Overview 25

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Wireless Lan USB Module 6:54 6:54

Sub Board Assy

Card Slot Assy 6:16 6:16

Front Left Housing

PS Grounding Plate

Frame Base Left Assy

Front Upper Shield Plate & Grounding Plate 13:22 13:22

Main Board Assy

Front Lower Shield Plate 14:07 14:07

Back Lower Shield Plate 14:12 14:12

Left Frame Base

Paper Guide Frame Bank Assy

EMI Frame 9:24 9:24

CR Scale & Spring

CR Scale Hold & CR Spacer 6:23 6:23

PF Encoder Assy

PF Sensor 7:11 7:11

Parallelism Bush (L) 6:30 7:53 14:23

FFC Cover Frame 6:41 6:41

Sub Board Assy

Paper Guide Upper Assy

CR Encoder Sensor 7:12 7:12

Panel Unit

Panel Lower Housing 9:45 9:45

Panel Left Housing Assy 10:04 10:04

Panel Right Housing Assy 10:04 10:04

Panel Board Assy 11:08 11:08

Panel Upper Housing 11:08 11:08

Tank Cover Assy

Tube Lock

Photo Interrupter

Tank Cap Assy

Hinge Cap Assy 10:26 10:26

Tank Cap Housing 10:34 10:34

Tank Cap 10:34 10:34

Key Slot 10:34 10:34

Tank Upper Porous Pad

Right Frame Base Assy

Right Sub Frame Base 10:59 10:59

Air Chamber Tube S

Air Chamber Tube L

Parts/Unit

Table 2-1. Standard Operation Time

Replacement

6:56 6:56

8:13 8:13

6:42 6:42

EEPROM data copy OK EEPROM data copy NG

11:46

14:02

14:12 14:12

13:04 13:04

6:28 6:28

6:38 6:38

6:25 6:25

6:39 11:56 18:35

6:28 6:28

6:06 6:06

6:12 6:12

7:07 7:07

10:20 10:20

10:27 10:27

14:29 14:29

17:04 17:04

16:57 16:57

Time (mm:ss)

Adjustment/

inspection

2:39

21:52

2:39

21:52

Revision D

Total

14:25 33:38

16:41 35:54

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Air Chamber Tube Assy 19:26 19:26

Air Chamber Holder 21:22 21:22

Air Chamber Ink Supply 50

Air Chamber Ink Supply 100

Power Supply Board Assy

Ink Supply Tank 100

Tank Unit 50

Adapter Tube S/L

CSIC Cable Holder Assy 20:01 20:01

CSIC Connector

CSIC Cable Holder 20:10 20:10

Ink Eject CSIC Cable

Main Cassette Torsion Spring 23:31 23:31

Main Cassette Lock 23:44 23:44

Ink Eject Housing Leaf Spring 19:52 19:52

Right Frame Base 24:07 24:07

Ink System Assy

Ink System Lower Porous Pad

Panel Frame 13:56 13:56

FFC Holder 19:35 19:35

Head FFC

Sub Guide Tube Frame 6:43 6:43

Guide Tube 11:22 11:22

CR Driven Pulley Spring Holder 6:18 6:18

CR Driven Pulley & Pulley Holder 6:52 6:52

CR Guide Rail Assy. (w/ CR Unit)

Protection Cover 11:00 11:00

Parallelism Bush (R)

Front Frame 18:58 7:22 26:20

Star Wheel Holder Assy.

Front Paper Guide Assy

Paper Guide Lower Porous Pad

Paper Guide Lower Porous Pad E

Grounding Plate 22:10 22:10

Main Frame Assy 24:28 10:12 34:40

PE Sensor & Holder

CR Motor

Holder Cam Assy

Change Lever 24:24 24:24

PF Roller Assy. Fixture Plate 24:59 24:59

Gear Holding Plate 24:08 24:08

Drive Trans. Gears (Pickup, different 3pcs) 24:29 24:29

Parts/Unit

Table 2-1. Standard Operation Time

Replacement

21:32 21:32

21:31 3:02 24:33

20:06 20:06

19:57 19:57

20:24 20:24

20:10 20:10

20:52 20:52

13:49 13:49

13:52 13:52

21:14 21:14

6:52 11:12 18:04

18:21 7:53 26:14

21:47 6:03 27:50

23:21 14:24 37:45

23:28 00:16 23:44

23:25 00:16 23:41

25:27 1:06 26:33

25:54 1:06 26:33

26:43 0:22 26:16

Time (mm:ss)

Adjustment/

inspection

Revision D

Total

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Main Frame Fixture Plate (x2) 24:00 24:00

Stacker Roller Assy Holding Plate 27:14 27:14

EJ Roller Assy 26:15 6:03 32:18

Frame Base Cover 25:57 25:57

PF Roller Assy. (w/ PF Scale) 26:57 6:44 33:41

Drive Trans. Gears (PF, different 2pcs) 31:59 31:59

PF Motor Assy. 33:47 0:19 34:06

Drive Trans. Shaft (Pickup) 30:49 30:49

Slide Lever 30:35 30:35

Pickup Roller Assy. Holding Lever & Spring 30:59 30:59

Frame Base 33:03 11:12 44:15

Duplex Unit 0:07 3:00 3:07

MSF Cover 0:44 0:44

MSF Frame Assy 1:04 3:00 4:04

1st Cassette Assy 0:06 1:29 1:35

Cassette Cover 0:28 0:28

1st Cassette 1:05 1:29 2:34

2nd Cassette 0:00 1:29 1:29

Parts/Unit

Table 2-1. Standard Operation Time

Replacement

Time (mm:ss)

Adjustment/

inspection

Revision D

Total

Disassembly/Reassembly Overview 28

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EMI Frame

CR Guide

Rail Assy

MSF Frame Assy

2. 2.

4.2.

2.2 Common cautions when disassembling/reassembling the Product

This section describes common cautions when disassembling/reassembling the product.

Before disassembling/reassembling the printer including this product, be sure to read "Safety Precautions(p3)"

and this section.

Item Content Photo/Illustration

Revision D

When handling parts

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

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

When reassembling

When applying

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

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

grease

External

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

parts

Moving parts After reassembling, confirm that there are no abnormal noises and they

work smoothly.

Timing belts 1. Take care not to broke them.

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

---

Motors Take care not to damage them. ---

Sensors 1. Take care not to touch the detector sections.

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. 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. 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. 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 29

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Holder Cam Assy

D/E Lever

Protrusion

Groove

FFC Cover Frame

Item Content Photo/Illustration

FFCs 1. Be sure to insert them to their connectors on the boards as far as they

Gears When installing gears, pay attention to the following:

PF rollers Do not touch rollers for paper feeding when handling them.

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.

• The gear section should not be damaged.

• No foreign material is attached.

• No grease is attached on any parts other than those specified.

Revision D

---

One Time parts

Holder Cam Assy

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

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

Ink System 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.

MAC Address Label

1. Take care not to stain or damage it.

2. When replacing the printer mechanism, attach the Main Board and the part with the MAC address label to the new printer mechanism.

One Time icon:

---

Disassembly/Reassembly Common cautions when disassembling/reassembling the Product 30

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1st Cassette

2nd Cassette

Duplex Unit

2.3 Disassembly/Reassembly Procedures

2.3.1 Parts/units to be removed before disassembly and reassembly

In "2.3.5 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.

 1st Cassette / 2nd Cassette

Revision D

 Duplex Unit

Figure 2-6. Removing the 1st Cassette/2nd Cassette

Figure 2-7. Removing the Duplex Unit

Note *: See (p 43) for disassembling the components of the Duplex Unit.

Note *: See (p 43) for disassembling the components of the 1st Cassette.

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Waste ink tube of Pump

Disconnect Adapter Tube

2.3.2 Required work before disassembling Adapter Assy

Ink supply part of Adapter Assy doesn't have valve structure, so that ink in Adapter Assy leaks in Carriage when disassembling Adapter Assy from Carriage.

When disassembling Adapter Assy, flush ink in Adapter Assy by the following procedure to prevent ink leakage.

2.3.2.1 Procedure 1

1. Connect waste ink tube of Ink System (Pump) to any waste ink bottle. Do not flush ink in Maintenance Box. If flushing ink in Maintenance Box, the actual ink amount in Maintenance Box does not match with the ink counter of Maintenance Box and causes ink leakage.

2. Disconnect Adapter Tube from Adapter Assy. When disconnecting Adapter Tube from Adapter Assy, place CR Unit above Cap Assy to catch leaked ink from Adapter Assy.

Revision D

Figure 2-8. Ink Flushing

3. Flush ink in Adapter Assy. by "Ink flushing" function of Adjustment Program. It takes about 4 minutes.

[Caution] Fatal error, such as 000021, 000023 and 000031, occurs in case that “Ink flushing” is executed while 2nd Cassette is not placed at the standard position or is not installed. Install and place 2nd Cassette at the standard position when executing “Ink flushing”.

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Remaining ink

Figure 2-9. Ink Flushing

4. Disassemble Adapter Assy. from Carriage after ink flushing is completed.

Revision D

5. Absorb remaining ink around Seal Rubber by cotton swab (the tip is thin) in reference to 4.1.1.2Cleaning the

seal rubber section of the printhead (p81) the seal rubber section of the printhead".

Figure 2-10. Ink Flushing

2.3.2.2 Procedure 2

1. Connect waste ink tube of Ink System (Pump) to a syringe (rough standard: tip = Φ3.2mm, capacity = 50mL).

2. Disconnect Adapter Tube from Adapter Assy. When disconnecting Adapter Tube from Adapter Assy, place CR Unit above Cap Assy to catch leaked ink from Adapter Assy. Carriage needs to be at the capping position because ejecting ink in Adapter Assy.through Ink System (CAP). Ink tube in Pump needs to be released from Pump roller (printer needs to be in normal condition after normal power-off sequence).

Disassembly/Reassembly Disassembly/Reassembly Procedures 33

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Waste ink tube of Pump Disconnect Adapter Assy

Revision D

Figure 2-11. Ink Flushing

Disassembly/Reassembly Disassembly/Reassembly Procedures 34

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Epson ET-7700/L7160

Remaining ink

Disconnect Adapter Tube

Connect syringe

3. Eject ink from Adapter Assy by the syringe slowly.

4. After disassembling Adapter Assy, absorb remaining ink around Seal Rubber by cotton swab (the tip is thin) in reference to 4.1.1.2Cleaning the seal rubber section of the printhead (p81) the seal rubber section of the print head.

Revision D

Figure 2-12. Ink Flushing

2.3.3 Required work before disassembling Ink tank

Eject ink from Ink tank before disassembling Ink tank accordingly.

1. Disconnect Adapter Tube from Adapter Assy. When disconnecting Adapter Tube from Adapter Assy, place CR Unit above Cap Assy to catch leaked ink from Adapter Assy.

2. Connect a syringe (rough standard: tip = Φ3.2mm, capacity = 50mL) to Adapter Tube.

Figure 2-13. Ink Flushing

Disassembly/Reassembly Disassembly/Reassembly Procedures 35

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Epson ET-7700/L7160

Open Hinge Cap Assy

Eject ink

3. Open Tank Cover and Hinge Cap Assy.

4. Eject ink from Ink Tank by syringe.

5. Repeat procedure 1-4 for all Ink Tank.

Revision D

Figure 2-14. Ink Flushing

Disassembly/Reassembly Disassembly/Reassembly Procedures 36

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2.3.4 Printer Inspection Mode (Service Mode)

This section explains the Printer Inspection Mode (Service Mode) that printer functions without scanner unit.

1. Press OK button and Power button more than 3 seconds until the service mode entry screen (ID input screen)

is indicated.

2. Input ID by arrow button (UP/DOWN/RIGHT), then press OK button. ID : 49515

Revision D

3. When the menu screen of the service mode is indicated, select “1. Printer Inspection Mode” by pressing OK button.

4. Enter Printer Inspection Mode by pressing START button.

Disassembly/Reassembly Disassembly/Reassembly Procedures 37

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Epson ET-7700/L7160

USB Cover

(p22) (p43)

Main Frame Assy

---

(p21) (p27)

Paper Guide

Upper Assy (p29)

CR Timing Belt FFC/ Cable *1

Shows necessary

procedures before

removing the following

parts.*

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

Item Description Reference

Parts/unit name

White-letter

Part/unit supplied as an ASP ---

Black-letter

Part/unit not supplied as an ASP ---

Icon

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

Indicates the reference page in blue-letter

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

Indicates the reference page in blue-letter

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

Indicates the reference page in blue-letter

Indicates necessary check items in the disassembling/ assembling procedure.

Indicates the reference page in blue-letter

Indicates supplementary explanation for disassembly is given.

Indicates the reference page in blue-letter

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

Indicates the reference page in blue-letter

Indicates particular routing of cables is required.

Indicates the reference page in blue-letter

Indicates particular adjustment(s) is/are required.

Chapter 3 " Adjustment (p59)"

Indicates lubrication is required.

Chapter 4 " Maintenance (p78)"

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.

---

White letters indicate a

part/unit supplied as an

ASP.

Shows the screw types and the specified torque on the

“Screw type/torque list”.

Reference page

Shows removal/installation

as a unit/assy. is available.

The name enclosed in gray

indicate a part/unit that must be removed on the

way to the target parts.

Note "*": The box with only part names means the removal of the parts. If the name of

FFC or a cable is shown, disconnect the FFC or cable from the connector.

Shows the procedure

number on the “FFC/

cable list”.

2.3.5 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 (p47) ".) For routing cables, see "2.5 Routing FFCs/cables (p54)".

The example below shows how to see the charts on the following pages.

Revision D

Disassembly/Reassembly Disassembly/Reassembly Procedures 38

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S10

S11

S12

S13

S14

S28

S24

S29

S13

S11

2.3.3.1 Disassembly Flowchart (ET-7700/L7160)

START

USB Cover

(p 47) (p 54)

SCN Upper

Housing Cover

Cap (p39)

Scanner Unit

S25

(p 54)

Hinge Left/Right

S11

---

Top Front Hous-

ing Assy (p39)

Maintenance

Box Cover (p39)

Hinge Assy (p39)

Housing Upper

S10

---

(p 40)

---

Top Front Hous-

ing Assy

(p 47)

CR Cover

---

Stacker Guide

Rail

---

Adapter Assy

(p 48)

Adapter

Rubber Seal

(p 44)

---

(p 47)

Printhead

---

(p 47) (p 59)

Hinge Assy

---

Hinge

---

(p 41)

(p 44)

PW Sensor

(p 48)

Hinge Holder

---

(p 55)

(p 46)

---

(p 59)

---

SCN Upper

Housing Cover

Cap

(p 47)

Adapter Plate

---

Tank Housing

Assy (p44)

Stacker Guide

---

Rail (p39)

Maintenance

Box Cover

---

Pick up Roller

Assy

(p 89)

USB Cover (p39)

---

SCN Upper

Housing Cover

Cap (p39)

Scanner Unit

(p39)

Stacker Frame

---

Main Stacker

---

Maintenance

Box

---

SCN Left Lower

Housing

---

Screw type/torque list

Symbol Screw Type Torque

C.B.P2-TITE SCREW 2.5x4 F/ZN-3C 1.5 ± 1 kgf·cm

SCN Right

Lower Housing

---

SCN Document

Cover Spacer

---

C.B.P-TITE P2 SCREW 3x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE P4 SCREW 3x10 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x10 F/ZN-3C 6 ± 0.5 kgf·cm

C.B.P-TITE SCREW 2.5x6 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 3 + 1 / -0 kgf·cm

C.B.P-TITE SCREW 2x6 F/ZN-3C 4 ± 1 kgf·cm

SCN Document

Cover Spacer

---

SCN Right

Lower Housing

(p39)

---

SCN Document

Cover Spacer

(p39)

SCN Document

Cover Assy

---

S15

---

S16

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

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

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

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x6 F/ZN-3C 4 ± 1 kgf·cm

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

C.B.S-TITE P4 SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.B.S-TITE SCREW 3x6 F/ZN-3C 1.5 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

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

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

C.P SCREW 3x4 F/ZN-3C 6 ± 1 kgf·cm

C.P SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.P.F.B-TITE SCREW 1.7x5 F/ZN-3C 4 ± 1 kgf·cm

C.P.P-TITE SCREW 3x8 F/ZN-3C 4 ± 1 kgf·cm

C.B.P-TITE SCREW 3x14 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.S-TITE SCREW 3x5 F/ZN-3C 6 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x8 F/ZN-3C 8 ± 1 kgf·cm

Flowchart 2-1. Disassembly/Reassembly Flowchart (1)

Disassembly/Reassembly Disassembly/Reassembly Procedures 39

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Epson ET-7700/L7160 Revision D

S10

S22

S10

S11

S12

S13

S14

S28

S10

S18

(p 39)

Left Bottom

Housing

S10

---

Left Bottom

Housing Assy

S17

(p 48) (p 56)

Panel Unit

(p 52) (p 56) (p 59)

Left Bottom

Housing (p40)

Left Bottom

Housing Assy

(p40)

CR Cover (p39)

Adapter Assy

(p39)

Rubber Seal

(p39)

Printhead (p39)

Tank Housing

Assy (p44)

Tank Cover Assy

(p44)

Panel Assy (p43)

Power Supply

Board Assy (p45)

(p40) (p40) (p40)

Panel Frame

(p40)

Tank Housing

Assy (p44)

Tank Cap Assy

(p44)

EMI Frame

---

(p 43)

---

(p 43)

 Torsion Spring 13.13

CR Scale

Relay Board A

---

(p40) (p40) (p40)

Left Frame Base

Assy

(w/Main Board)

(p 55) (p 59)

(p 41)

FFC Holder

---

Head FFC Assy

(p 56)

(p 48)

---

PF Encoder

Sensor

CR Driven Pul-

ley & Pulley

Holder

---

(p 48)

---

PF Encoder

Sensor Holder

Assy

S18

(p 55)

Parallelism Bush

(L)

FFC Cover

Frame

S17

(p 48)

---

Relay Board B

S10

(p 55)

---

Tank Housing

Assy (p44)

Tank Cap Assy

(p44)

Panel Assy (p43)

Power Supply

Board Assy (p45)

(p40) (p40) (p40)

(p 55)

Panel Frame

---

Screw type/torque list

CR Cover (p39)

CR Encoder

Sensor *

---

Symbol Screw Type Torque

C.B.P2-TITE SCREW 2.5x4 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE P2 SCREW 3x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE P4 SCREW 3x10 F/ZN-3C 6 ± 1 kgf·cm

---

S15

S16

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

C.B.P-TITE SCREW 2.5x10 F/ZN-3C 6 ± 0.5 kgf·cm

C.B.P-TITE SCREW 2.5x6 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 3 + 1 / -0 kgf·cm

C.B.P-TITE SCREW 2x6 F/ZN-3C 4 ± 1 kgf·cm

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

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

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x6 F/ZN-3C 4 ± 1 kgf·cm

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

C.B.S-TITE P4 SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.B.S-TITE SCREW 3x6 F/ZN-3C 1.5 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

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

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

C.P SCREW 3x4 F/ZN-3C 6 ± 1 kgf·cm

C.P SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.P.F.B-TITE SCREW 1.7x5 F/ZN-3C 4 ± 1 kgf·cm

C.P.P-TITE SCREW 3x8 F/ZN-3C 4 ± 1 kgf·cm

C.B.P-TITE SCREW 3x14 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.S-TITE SCREW 3x5 F/ZN-3C 6 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x8 F/ZN-3C 8 ± 1 kgf·cm

(p 43)

Tank Housing

Assy (p44)

Tank Cap Assy

(p44)

Power Supply

Board Assy (p45)

Tube Lock (p44)

EMI Frame

(p40)

Right Frame

Base Assy

S10

(p 49)

(p 54)

Ink System Assy

S10

(p 49)

Porous Pad for

Ink System Assy

---

(p 59)

---

Paper Guide

Upper Assy

---

(p 49) (p 59)

Flowchart 2-2. Disassembly/Reassembly Flowchart (2)

Disassembly/Reassembly Disassembly/Reassembly Procedures 40

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Epson ET-7700/L7160 Revision D

S18

S14

S10

S18

S10

S11

S12

S13

S14

S28

CR Scale (p40)

CR Scale Holder

S18

---

 Extension spring

CR Driven

Pulley Assy

(p 87)

FFC Cover

Frame (p40)

CR Driven Pul-

ley & Pulley Holder (p40)

CR Guide Rail

Assy (w/CR Unit)

S14

(p 49) (p 56) (p 59) (p 88)

Protection Cover

S18

---

(p 39)

(p 41)

(p 40)

Left Bottom

Housing Assy

(p40)

2nd Cassette

Sensor Holder

S13

---

Paper Guide

Rear ASF Assy

(p 55)

---

S10

(p 55)

---

Sub Guide Tube

Frame (p46)

Guide Tube

(p46)

---

Main Cassette

Torsion Spring

---

Star Wheel

Holder Assy

---

Tank Housing

Assy (p44)

Tank Cap Assy

(p44)

Power Supply

---

Board Assy (p45)

Tube Lock (p44)

EMI Frame

(p40)

Right Frame

Base Assy (p40)

---

Paper Guide

Front Assy

S19

(p 51) (p 56)

(p 59) (p 86)

---

Paper Guide

Parallel Adjustment Bush Right

Lower Poro us

Pad B

(p 42)

(p 59)

(p 50)

Tank Cover Assy

(p44)

Tank Cap Assy

(p44)

Power Supply

Board Assy (p45)

Tube Lock (p44)

EMI Frame

(p40)

Left Frame Base

Assy (w/Main

Board) (p40)

Parallel Adjust-

ment Bush Right

(p41)

Front Frame

S10

(p 50) (p 88)

Guide Tube

(p46)Ink System

Assy (p40)

Paper Guide

Upper Assy (p40)

PF Encoder Sen-

sor Holder Assy

(p40)

Grounding Plate

S26

---

(p 41)

---

Paper Guide

Lower Porous

Pad

(p 50)

Main Frame

Assy

(p 51) (p 57)

(p 59) (p 87)

(p 43)

---

Paper Guide

Lower Porous

Pad E

(p 50)

Left Frame Base

Assy (w/Main

Board) (p40)

Relay Board B

(p40)

Relay Board B

(p40)

PF Roller

Fixture Plate

S27

---

Gear Holding

Plate

(p 53) (p 88)

APG Lever/

Gear’s

(p 53)

Drive

Transmission

Gear’s Left

(p 53) (p 87)

---

Screw type/torque list

Symbol Screw Type Torque

---

S15

S16

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

Gear Fixture

Plate

S13

(p 51)

One Way Clutch

Gear

---

Main Frame Fix-

ture Plate

---

(p 51)

C.B.P2-TITE SCREW 2.5x4 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE P2 SCREW 3x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE P4 SCREW 3x10 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x10 F/ZN-3C 6 ± 0.5 kgf·cm

C.B.P-TITE SCREW 2.5x6 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 3 + 1 / -0 kgf·cm

C.B.P-TITE SCREW 2x6 F/ZN-3C 4 ± 1 kgf·cm

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

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

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x6 F/ZN-3C 4 ± 1 kgf·cm

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

C.B.S-TITE P4 SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.B.S-TITE SCREW 3x6 F/ZN-3C 1.5 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

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

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

C.P SCREW 3x4 F/ZN-3C 6 ± 1 kgf·cm

C.P SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.P.F.B-TITE SCREW 1.7x5 F/ZN-3C 4 ± 1 kgf·cm

C.P.P-TITE SCREW 3x8 F/ZN-3C 4 ± 1 kgf·cm

C.B.P-TITE SCREW 3x14 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.S-TITE SCREW 3x5 F/ZN-3C 6 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x8 F/ZN-3C 8 ± 1 kgf·cm

Flowchart 2-3. Disassembly/Reassembly Flowchart (3)

Disassembly/Reassembly Disassembly/Reassembly Procedures 41

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Epson ET-7700/L7160 Revision D

S10

S11

S12

S13

S14

S28

(p 41)

Frame Base

Front Cover

---

PF Roller Assy

(p 59)

(p 89)

Paper Guide

Rear ASF Assy

(p41)

Pick up Roller

Assy (p39)

Gear Fixture

Plate (p41)

One Way Clutch

Gear (p41)

2nd Cassette

Sensor Holder

(p41)

Drive Transmission Gear’s Left

(p41)

---

EJ Roller Assy

---

(p 50)

(p 59)

(p 89)

Stacker Guide

Rail (p39)

Main Stacker

(p39)

Stacker Frame

(p39)

Pick up Driven

Shaft

---

Stacker Roller

Assy Holding

---

Plate

---

--2

(p 89)

Slide Lever

---

Screw type/torque list

---

Symbol Screw Type Torque

C.B.P2-TITE SCREW 2.5x4 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE P2 SCREW 3x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE P4 SCREW 3x10 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x10 F/ZN-3C 6 ± 0.5 kgf·cm

C.B.P-TITE SCREW 2.5x6 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 3 + 1 / -0 kgf·cm

C.B.P-TITE SCREW 2x6 F/ZN-3C 4 ± 1 kgf·cm

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

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

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x6 F/ZN-3C 4 ± 1 kgf·cm

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

C.B.S-TITE P4 SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.B.S-TITE SCREW 3x6 F/ZN-3C 1.5 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

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

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

C.P SCREW 3x4 F/ZN-3C 6 ± 1 kgf·cm

C.P SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.P.F.B-TITE SCREW 1.7x5 F/ZN-3C 4 ± 1 kgf·cm

C.P.P-TITE SCREW 3x8 F/ZN-3C 4 ± 1 kgf·cm

C.B.P-TITE SCREW 3x14 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.S-TITE SCREW 3x5 F/ZN-3C 6 ± 1 kgf·cm

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

Left Frame Base

Assy (w/Main

Board) (p40)

EJ Roller Assy

(p42)

Combination Gear 17.03.10.2/ Spur Gear 49.32

---

PF Motor Assy

(p 59)

Pick up Assy Holder Lever

---

Gear Fixture

---

Plate (p41)

One Way Clutch

Gear (p41)

Pick up Driven

Shaft (p42)

Porous Pad

Stopper

Paper Guide

Lower

PF Motor Assy

(p42)

Frame Base

(p 59) (p 86)

S15

S16

S17

S18

S19

S20

S21

S22

S23

---

S24

S25

S26

S27

C.B.S-TITE SCREW 3x8 F/ZN-3C 8 ± 1 kgf·cm

Flowchart 2-4. Disassembly/Reassembly Flowchart (4)

Disassembly/Reassembly Disassembly/Reassembly Procedures 42

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Epson ET-7700/L7160 Revision D

S17

S20

S23

S10

S11

S12

S13

S14

S28

S19

(p 40)

Wireless LAN

Module

S17

---

Relay Board A

(p40)

Card Slot Board

---

Front Left Hous-

ing Assy

---

Sub Board Assy

---

(p 40)

 Panel FFC

Panel Assy

---

(p 52)

(p 56)

---

(p 59)

Panel Lower

Housing

---

Panel Left Hinge

Assy (p43)

Panel Right

Hinge Assy (p43)

Panel Left Hinge

Assy

---

Panel Right

Hinge Assy

---

(p 41)

---

Panel Board

Panel Upper

Housing

(p 43)

Assy

---

Main Board Shield Plate

Upper/

Grounding Plate

S10 S21

(p 50)

---

Main Board Assy

S10

(p 59)

Main Board Shield Plate

---

Screw type/torque list

Front Lower

Symbol Screw Type Torque

C.B.P2-TITE SCREW 2.5x4 F/ZN-3C 1.5 ± 1 kgf·cm

PE Sensor Assy

---

S15

---

(p 59)

CR Motor

---

(p 59)

(p 43)

---

1st Cassette

---

(p 59)

Cassette Cover

---

Holder Cam

Assy

---

Change Lever

---

Main Cassette

---

Duplex Unit

(p 59)

---

Main Board Shield Plate Back Lower

---

MSF Cover

---

S19

---

MSF Frame Assy

S13

(p 59)

---

Left Frame Base

---

S15

S16

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

--C.B.P-TITE P2 SCREW 3x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE P4 SCREW 3x10 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x10 F/ZN-3C 6 ± 0.5 kgf·cm

C.B.P-TITE SCREW 2.5x6 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 3 + 1 / -0 kgf·cm

C.B.P-TITE SCREW 2x6 F/ZN-3C 4 ± 1 kgf·cm

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

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

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x6 F/ZN-3C 4 ± 1 kgf·cm

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

C.B.S-TITE P4 SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.B.S-TITE SCREW 3x6 F/ZN-3C 1.5 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

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

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

C.P SCREW 3x4 F/ZN-3C 6 ± 1 kgf·cm

C.P SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.P.F.B-TITE SCREW 1.7x5 F/ZN-3C 4 ± 1 kgf·cm

C.P.P-TITE SCREW 3x8 F/ZN-3C 4 ± 1 kgf·cm

C.B.P-TITE SCREW 3x14 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.S-TITE SCREW 3x5 F/ZN-3C 6 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x8 F/ZN-3C 8 ± 1 kgf·cm

Flowchart 2-5. Disassembly/Reassembly Flowchart (6)

Disassembly/Reassembly Disassembly/Reassembly Procedures 43

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Epson ET-7700/L7160 Revision D

S29

S10

S11

S12

S13

S14

S30

S10

Scanner Housing

Upper Assy

S10

---

CIS Module Unit

---

 FFC/Cable* 8

Scanner Car-

riage Unit

(p 90) (p 91) (p 91)

Scanner Hous-

ing Lower

(p 90)

(p 39)

---

(p 39)

Tank Cover Assy

4 2

---

Tank Housing

Assy

3 1

---

Spacer

CIS Module

Tube Lock

---

Tank Cover

Open Sensor

(p 58)

---

Screw type/torque list

---

Scanner Motor

(p 54)

CIS Holder Unit

---

--4

---

Tank Cover

Open Sensor

(p44)

Symbol Screw Type Torque

C.B.P2-TITE SCREW 2.5x4 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE P2 SCREW 3x8 F/ZN-3C 6 ± 1 kgf·cm

Tank Cap Assy

S10

---

Power Supply

Board Assy (p45)

Tube Lock (p44)

EMI Frame

(p40)

Tank Upper

Porous Pad (p44)

Right Frame

Base Assy

(p 49)

(p 45)

Hinge Cap Assy

---

Tank Cap Hous-

ing

---

Tank Upper

Porous Pad

(p 52)

---

Key Slot

---

Tank Cap

---

FFC/cable list

No. FFC/Cable

Remove the double-sided tape(x1) and release the Scanner

FFC routing to the Scanner Carriage Unit.

---

S15

S16

S17

S18

---

S19

S20

S21

S22

S23

S24

S25

S26

S27

S28

S29

C.B.P-TITE P4 SCREW 3x10 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x10 F/ZN-3C 6 ± 0.5 kgf·cm

C.B.P-TITE SCREW 2.5x6 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 3 + 1 / -0 kgf·cm

C.B.P-TITE SCREW 2x6 F/ZN-3C 4 ± 1 kgf·cm

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

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

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x6 F/ZN-3C 4 ± 1 kgf·cm

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

C.B.S-TITE P4 SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.B.S-TITE SCREW 3x6 F/ZN-3C 1.5 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

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

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

C.P SCREW 3x4 F/ZN-3C 6 ± 1 kgf·cm

C.P SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.P.F.B-TITE SCREW 1.7x5 F/ZN-3C 4 ± 1 kgf·cm

C.P.P-TITE SCREW 3x8 F/ZN-3C 4 ± 1 kgf·cm

C.B.P-TITE SCREW 3x14 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.S-TITE SCREW 3x5 F/ZN-3C 6 ± 1 kgf·cm

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

C.C.P-TITE SCREW 3x12 F/ZN-3C 6 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x8 F/ZN-3C 8 ± 1 kgf·cm

Flowchart 2-6. Disassembly/Reassembly Flowchart (11)

Disassembly/Reassembly Disassembly/Reassembly Procedures 44

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Epson ET-7700/L7160 Revision D

S10

S11

S12

S13

S14

S30

S13

S10

S13

S10

S13

S10

(p 44)

Right Sub Frame

Base

---

Air Chamber

Tube Assy

---

Air Chamber

Tube S (p45)

Air Chamber

Tube L (p45)

Ink Supply T ank

100

(p 52)

PS Grounding

Plate

---

Tank Unit 50

1 1

(p 52)

1 1

Adapter Tube S/

---

CSIC Cable

Air Chamber

Tube S

Air Chamber

Tube L

---

Holder

---

(p 52)

---

(p 52)

---

CSIC Cable Holder Assy

---

CSIC Connector

---

Main Cassette

Torsion Spring

2 2

---

Main Cassette

Lock

---

Ink Eject Housing Leaf Spring

---

Screw type/torque list

Symbol Screw Type Torque

Ink Eject CSIC

Air Chamber

Holder

S10

---

Air Chamber

Ink Supply 50

---

Tank Unit 50

Air Chamber

Ink Supply 100

---

(p45)

Adapter Tube S/

L (p45)

Ink Eject CSIC

Cable (p45)

Power Supply

Board Assy

(p 58)

Right Frame

Base

---

Ink Eject CSIC

Cable (p45)

Main Cassette

Torsion Spring

(p45)

Main Cassette

Lock (p45)

Ink Eject

Housing Leaf

Spring (p45)

---

Cable

---

S15

S16

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

S28

S29

C.B.P2-TITE SCREW 2.5x4 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE P2 SCREW 3x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE P4 SCREW 3x10 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x10 F/ZN-3C 6 ± 0.5 kgf·cm

C.B.P-TITE SCREW 2.5x6 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 3 + 1 / -0 kgf·cm

C.B.P-TITE SCREW 2x6 F/ZN-3C 4 ± 1 kgf·cm

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

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

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x6 F/ZN-3C 4 ± 1 kgf·cm

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

C.B.S-TITE P4 SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.B.S-TITE SCREW 3x6 F/ZN-3C 1.5 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

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

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

C.P SCREW 3x4 F/ZN-3C 6 ± 1 kgf·cm

C.P SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.P.F.B-TITE SCREW 1.7x5 F/ZN-3C 4 ± 1 kgf·cm

C.P.P-TITE SCREW 3x8 F/ZN-3C 4 ± 1 kgf·cm

C.B.P-TITE SCREW 3x14 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.S-TITE SCREW 3x5 F/ZN-3C 6 ± 1 kgf·cm

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

C.C.P-TITE SCREW 3x12 F/ZN-3C 6 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x8 F/ZN-3C 8 ± 1 kgf·cm

Disassembly/Reassembly Disassembly/Reassembly Procedures 45

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Epson ET-7700/L7160 Revision D

S18

S10

S11

S12

S13

S14

S30

(p 39)

Sub Guide Tube

Frame

---

Tube Lock (p44)

Adapter Tube S/

L (p45)

---

Right Frame

Base Assy (p44)

Sub Guide Tube

Frame (p46)

Screw type/torque list

Guide Tube

S13

---

Symbol Screw Type Torque

C.B.P2-TITE SCREW 2.5x4 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE P2 SCREW 3x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE P4 SCREW 3x10 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x10 F/ZN-3C 6 ± 0.5 kgf·cm

C.B.P-TITE SCREW 2.5x6 F/ZN-3C 1.5 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 6 ± 1 kgf·cm

C.B.P-TITE SCREW 2.5x8 F/ZN-3C 3 + 1 / -0 kgf·cm

C.B.P-TITE SCREW 2x6 F/ZN-3C 4 ± 1 kgf·cm

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

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

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x6 F/ZN-3C 4 ± 1 kgf·cm

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

C.B.S-TITE P4 SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

S15

S16

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

S28

S29

C.B.S-TITE SCREW 3x6 F/ZN-3C 1.5 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

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

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

C.P SCREW 3x4 F/ZN-3C 6 ± 1 kgf·cm

C.P SCREW 3x6 F/ZN-3C 6 ± 1 kgf·cm

C.P.F.B-TITE SCREW 1.7x5 F/ZN-3C 4 ± 1 kgf·cm

C.P.P-TITE SCREW 3x8 F/ZN-3C 4 ± 1 kgf·cm

C.B.P-TITE SCREW 3x14 F/ZB-3C 8 ± 1 kgf·cm

C.B.P-TITE SCREW 3x12 F/ZB-3C 8 ± 1 kgf·cm

C.B.S-TITE SCREW 3x5 F/ZN-3C 6 ± 1 kgf·cm

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

C.C.P-TITE SCREW 3x12 F/ZN-3C 6 ± 1 kgf·cm

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

C.B.S-TITE SCREW 3x8 F/ZN-3C 8 ± 1 kgf·cm

Disassembly/Reassembly Disassembly/Reassembly Procedures 46

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Epson ET-7700/L7160 Revision D

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

SC Upper Housing Cover Cap

Drive pulley flange

Concave

Ground terminal

Scanner Housing Lower

Drive pulley flange

Dowel

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

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

USB Cover

Hook

Compression Spring 1.47

Dowel

CIS Module

Compression Spring 0.37

CIS Holding Plate

Hook

CIS Holding Plate

CIS Module

CIS Holding Plate

Top Front Housing Assy

Hook

C.B.P-TITE SCREW 2.5x8 F/ZN-3C (3 + 1 / - 0 kgf·cm)

Printhead

CR guide frame

Head FFC

2.4 Detailed Disassembly/Reassembly Procedure for each Part/Unit

Scanner Motor Assy

USB Cover

SC Upper Housing Cover Cap

 Install the ground terminal of the scanner grounding wire with

it touches the dowel on the Scanner Housing Lower.

 Install the drive pulley flange with the concave part facing

upward.

CIS Module/CIS Holding Plate

Slide the USB Cover in the direction of the arrow shown in the figure above and release the hook (x11) to remove it.

Disengage the hooks before disassembly by inserting a flat-head screw driver or a similar tool and spring hook jig into the spaces around the caps.

Top Front Housing Assy

Printhead

 When removing/replacing the Printhead, be sure the CR

Unit is at the position shown above. Otherwise, the CR guide frame may be deformed by applying force perpendicularly when tightening the screws and it may affect print quality.

 When removing/installing the Printhead, take care not to

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 47

Release the hook (x3 each) to remove the CIS Holding Plate (x2).

Install the CIS Module with aligning the dowel (x4) of the CIS Module with the Compression Spring 1.47/0.37.

Release the hook (x2) on the front side of the printer and release the hook (x2) on the rear side while rotating Top Front Housing Assy in the direction of the arrow shown in the figure above to remove it.

damage the Head FFC because there isn't enough space.

When installing the Printhead, make sure that the four corners of the Printhead are inserted as far as they will go and secure the screws in the order shown in the figure above.

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Page 48

Epson ET-7700/L7160 Revision D

Grounding sectionPrinthead grounding plate

Rubber Seal

Cross-section

Top

Bottom

Adapter Plate

Adapter Assy

Removal

Installation

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

Tank Housing Assy

CR Scale

Torsion Spring13.13

80-digit side

FFC Cover Frame

Left Frame Base Assy

Should be set inside

Wireless LAN Module cable

Main Board

Card Slot Board Assy

CN3

PW Sensor

Rubber Seal

Adapter

Tank Housing Assy

When installing the PW Sensor, make sure that the grounding section of the printhead grounding plate is facing upward.

CR Scale

Attach the Rubber Seal with the side with two V-shape foots down and one V-shape foot up.

FFC Cover Frame

Disengage the Adapter by releasing Adapter Plate from the slit on the print head by sliding it in the direction of the upper arrow.

 Install the Adapter Plate into the slit on the Printhead by sliding

it in the direction of the lower arrow.

Card Slot Board Assy

Detach by removing the three screws and then by disengaging the hooks while widening the assy in the direction of the arrow.

When replacing the printer mechanism; so as to transfer the MAC address label, remove the FFC Cover Frame from the old printer

Install the Torsion Spring 13.13 as shown above.

mechanism and attach it on the new printer mechanism.

The screw under the FFC Cover Frame should be inside the frame of the Frame base Left Assy.

The Wireless LAN Module cable should be disconnected from the connector (CN3) on the Main Board after the Card Slot Board Assy is removed from the printer.

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 48

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Epson ET-7700/L7160 Revision D

Ink Eject Tube

Tube Clamp

Right Frame Base Assy

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

Hook

Main Frame

Protrusion Hole

Paper Guide Upper Assy (Center)

PE Sensor

Extension Spring 4.99

Extension Spring 8.64Extension Spring 8.64

Paper Guide Upper Assy (Right)

Paper Guide Upper Assy (Left)

Paper Guide Upper Assy (Center)

Sub roller

Paper Guide Upper Assy (Right)

Sub roller

Paper Guide Upper Assy (Left)

Approx. 9 mm

Lower side

Box for height

adjustment

Frame Base

Ink System Assy

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

0-digit side

Pinion gear of the CR Motor

Dowel

80-digit side

APG Lever

Hole

CR Guide Rail Assy

CR Guide Rail StopperMain Frame

C.B.S-TITE.P4 SCREW 3x6 F/ZN-3C (6 ± 1 kgf·cm) C.B.S-TITE SCREW 3x6 F/ZN-3C (8 ± 1 kgf·cm)

Right Frame Base Assy

Follow the procedure below when installing the Right Frame Base Assy.

1. Engage the dowels on the bottom and on the rear.

2. Set the Right Frame Base Assy and screw it on the top with two screws and on the rear with two screws.

3. Attach the Tube Clamp on the Ink Eject Tube.

4. Insert the Ink Eject Tube into the joint of the Waste Ink Box and secure it with the Tube Clamp. (p 49)

Paper Guide Upper Assy

When removing the Paper Guide Upper Assy (Center), slide it to the 0-digit side or the 80-digit side taking care not to touch the PE Sensor.

 Confirm that the protrusion (x8) on the Paper Guide Upper Assy are aligned with the hole (x8) on the Main Frame and install the Extension

Spring 4.99/8.64.

 Install the Paper Guide Upper Assy (Left/Right) with the sub roller outside.  Install the Extension Spring 4.99/8.64 in the position shown above.

 To prevent an attachment error of the Ink System Assy and waste ink leakage by Frame Base deformation, when removing/installing the Ink

System Assy, put a box (H: approx. 9 mm) in the position shown above.

 When connecting the ink tube, be careful not to break the ink tube. Also, confirm that the ink tube isn't broken after connecting it.

 Tighten the screws in the order shown above.

Ink System Assy

CR Guide Rail Assy (w/CR Unit)

 When installing the CR Guide Rail Assy the Main Frame, pay attention to the following instructions:

• The APG lever should be through the hole on the CR Guide Rail Assy.

• The pinion gear of the CR Motor should be through the hole on the CR Guide Rail Assy.

• The dowel on the Main Frame should be aligned with the hole on the CR Guide Rail Assy.

 Secure the CR Guide Rail stopper (x2) with the screw (x2) in the order shown in the figure above.  When securing the CR Guide Rail Assy, secure the CR Guide Rail Assy temporarily with the screw (x2).

After PG adjustment (p 74), secure the screw (x2) finally.

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 49

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Epson ET-7700/L7160 Revision D

Front Frame

Star Wheel Holder Assy

Extension Spring 0.53

Torsion Spring 5.1

Front Frame

Extension Spring 0.53

Bottom side

Extension Spring 0.45

EJ Roller Assy

Hook in the groove

Right Frame Base Assy

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

Torsion Spring 44.24

0-digit side

Star Wheel Holder Assy

Torsion Spring 25.39

80-digit side

Frame Base

PIS Board

Grounding Plate

Main Board Shield Plate Upper

C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf·cm) C.P SCREW 3x6 F/ZN-3C (6 ± 1 kgf·cm)

Front Frame

EJ Roller Assy

Right Frame Base Assy

Install the Torsion Spring 5.1/Extension Spring 0.53 as shown in the figure above.

Install the Extension Spring 0.45 as shown in the figure above.

Star Wheel Holder Assy

Attach the Right Frame Base Assy on the printer and secure it with screws; two on the top, three on the sides, and two on the rear as shown above.

Main Board Shield Plate Upper/Grounding Plate

When installing the Star Wheel Holder Assy, follow the procedure below.

1. Install the Torsion Spring 25.39 to the shaft on the Frame Base at the 80-digit side as shown in the figure above.

2. Install the Star Wheel Holder Assy to the Frame Base.

3. Install the Torsion Spring 44.24 to the shaft on the Frame Base at the 0-digit side as shown in the figure above.

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 50

Install the Grounding Plate as shown in the figure above.

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Epson ET-7700/L7160 Revision D

CR Motor cable

Groove

0-digit side

CR Motor cable

APG Lever

Groove

80-digit side

PS Unit cable

Main Frame Assy

Frame Base

Frame Base Strengthen Plate Right

Frame Base Strengthen Plate Left

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

C.B.P-TITE.P4 SCREW 3x10 F/ZN-3C (6 ± 1 kgf·cm)

P.W. 3.2x0.5x7,L/NA

One Way Clutch Gear

Gear Fixture Plate

Spur Gear 28.2

Compression Spring 0.16

Spur Gear 24

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

Check point

Paper Guide Front Assy

Paper Guide Front Porous Pad

Paper Guide Front Assy

Paper Guide Front Porous Pad

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

Holding Plate

Black mark

Paper Guide Lower Porous Pad B

Contact area (L)

Contact area (S)

Paper Guide Lower Porous Pad A

Paper Guide Lower Porous Pad EPaper Guide Lower Porous Pad C

Holding Plate

Main Frame Assy/Frame Base Strengthen Plate Left/Right

Spur Gear 28.2/Compression Spring 0.16/Spur Gear 24/

One Way Clutch Gear/Gear Fixture Plate

 Align the APG Lever with the cutout on the Main Frame.  Route the CR Motor cable through the groove and install the Frame Base Strengthen Plate Left/Right.  Tighten the screws in the order shown above.

Paper Guide Front Assy

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 51

One of the screw (x4) securing the Paper Guide Front Assy is under the Paper Guide Front Porous Pad. When removing the Paper Guide Front Assy, peel off the Paper Guide Front Porous Pad in the position shown above and remove the screw (x1).

When installing the Paper Guide Front Assy, check the following points.

 The Paper Guide Porous Pad is not wavy.  The rib of the Paper Guide Porous Pad is under the Paper Guide Front Assy.  Completely wipe drops of ink around the Paper Guide Front Assy.

 Install the Spur Gear 28.2/Compression Spring 0.16/Spur Gear

24/One Way Clutch Gear/Gear Fixture Plate as shown in the figure above.

Paper Guide Lower Porous Pad B/C/E/Holding Plate

 Install the Paper Guide Lower Porous Pad C/E with aligning them with the rib on the Frame Base without lifting.  When installing the Paper Guide Lower Porous Pad B, pay attention to the following points.

• Install it with the narrower side (contact area (S)) frontward.

• Install it so that its contact point touches the sides of the Paper Guide Lower Porous Pad E properly.

 Install the Pad Stopper with the black mark down.

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Epson ET-7700/L7160 Revision D

Panel Assy

Tank Upper Porous Pad

Longer

Shorter

Adapter Tube

Ink Tank

Rib

Mark

Adapter Tube

Air Chamber Tube

Mark

Rib

Adapter Tube

Mark

Rib

Adapter

Air Chamber

Air Chamber Tube

Slit

Panel Assy

Tank Upper Porous Pad

Adapter Tube (Ink Tank Side)

 Remove the seven screws on the bottom of the Panel Assy.

 Release the hooks on the Panel Lower Housing by slightly widening the upper part of the Panel Assy.

Adapter Tube (Ink Tank Side)

Set the Tank Upper Porous Pad with the longer space to the rear as shown above.

Air Chamber Tube (Ink Tank Side)

Adapter Tube (Adapter Side)

Make sure the tubes are fully inserted onto the joints of the Ink Tank.

Air Chamber Tube (Air Chamber Side)

Align the marker on the Adapter Tube with the rib on the Air

Disassembly/Reassembly Detailed Disassembly/Reassembly Procedure for each Part/Unit 52

Chamber Tube Assy.

Align the marker on the Air Chamber Tube with the rib shown above.

Insert the Adapter Tube fully into the ink supply holes of the adapter.

Align the marker on the Adapter Tube with the rib on the carriage.

Insert the Air Chamber Tube fully into the supply holes of the Air Chamber.

Set each tube into the slits as shown above.

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Air Chamber

Ink Eject Tube

Rib

Spur Gear 17.6A

Spur Gear 14.4B

Spur Gear 17.6

Clutch Gear

Combination Gear 13.6.20.8

Spur Gear 13.6 Spur Gear 21Assy

Spur Gear 11.4Spur Gear 17.6

Spur Gear 17.6

Spur Gear 19.2

Hook

Ink Tube (Air Chamber Side)

Gears on the left side of the Frame Base

Wrap the Ink Eject Tube once around the ribs on the Air Chamber.

Release the hook to remove the Spur Gear 19.2.

Install the Spur Gear 17.6A/Spur Gear 17.6(x3)/Clutch Gear/Combination Gear 13.6.20.8/Spur Gear 14.4B/Spur Gear 13.6/Spur Gear 21 Assy/Spur Gear 11.4 as shown in the figure above.

Disassembly/Reassembly 53

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Scanner Carriage

Hook Rib

Scanner Carriage

Slit section

Double-sided tape

CIS Module

Connector

Scanner FFC

Scanner Housing Lower

Groove Double-sided tape

Scanner FFC

Scanner Housing Lower

Ribs

Cutout Rib

Scanner Encoder FFC Scanner Housing Lower

Groove

Scanner Encoder FFC

Ferrite core

Scanner grounding wire

Scanner Motor cable

Scanner Housing Lower

Double-sided tape

Housing Upper

Figure (1)

Scanner FFC

Scanner Encoder FFC

Figure (2)

Double-sided tape

Scanner grounding wire

C.B.S-TITE SCREW 3x6 F/ZN-3C (6 ± 1 kgf·cm)

Acetate Tape

CR Motor cable

Ferrite core

2.5 Routing FFCs/cables

Scanner Motor Assy

Scanner FFC

 Scanner Carriage

• Route the Scanner FFC while aligning it with the shape of the slit on the Scanner Carriage, and route it inside the hook and rib and then connect it to the connector on the CIS Module.

• Secure with the double-sided tape on the position shown above.

 Scanner Housing Lower

• Route the cable inside the rib (x4) on the Scanner Housing Lower.

• Secure with the double-sided tape (x2) on the position shown above.

Inside the USB Cover

 Scanner Motor cable: Put the ferrite core at the point shown above and route the Scanner Motor cable through the cutout (x2) and the rib on the

Scanner Housing Lower.

 Scanner grounding wire: Put the ferrite core at the point shown above and route the Scanner grounding wire through the cutout (x2) and the groove

on the Scanner Housing Lower.

 Scanner Encoder FFC: Route the Scanner Encoder FFC along the shape of the Scanner Housing Lower and route it through the rib, and then secure

it with double-sided tape on the position shown above.

Rear right side of the printer

 Scanner grounding wire and secure them with the screw (x1) at the point shown in the figure (1) above.

 Secure the Scanner FFC, Scanner Encoder FFC with double-sided tape at the point shown in the figure (2) above.

Disassembly/Reassembly Routing FFCs/cables 54

 CR Motor cable

Set the ferrite core on the CR Motor cable into the space shown above and secure the cable with acetate tape on the Air Chamber Tube Assy.

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Hook Double-sided tape

PE Sensor FFC

PF Encoder Sensor FFC

Relay Board B FFC

ASF PE Sensor FFC

Figure 2-2. Relay Board B

No. Name

CN1 Relay Board B FFC

CN2 PF Encoder Sensor FFC

CN3 ASF PE Sensor FFC

CN4 2nd Cassette Sensor cable

CN7 PE Sensor FFC

CN6 1st Cassette Sensor cable

Figure 2-2. Main Board

No. Name

CN30 CR Motor cable

CN31 PF Motor cable

CN25 Relay Board B FFC

CN501 PS Unit cable

Relay Board B

Main Board

Relay Board B

CR Motor cable

Gear Holding Plate

2nd Cassette Sensor cable

PF Motor cable

1st Cassette Sensor cable

ASF PE Sensor FFC

Frame Base

ASF PE Sensor FFC

Rib Hole Double-sided tape

1st Cassette Sensor Cable

Sensor Holder

2nd Cassette Sensor

2nd Cassette Sensor cable

Cutout Groove

Rib Hook

Frame Base Assy

Parallel Adjustment Bush Left

Acetate Tape

PF MotorAcetate Tape

Bottom of printer

CR Encoder

Groove Double-sided tape

CN2

CR UnitPW Sensor FFC

PW Sensor

CN6

Rear left side of the printer

CN7

CN25

CN501

Paper Guide Rear ASF Assy

Route the ASF PE Sensor FFC through the rib (x2) on the Frame Base and route it through the hole, and then secure it with double-sided tape at the point shown above.

AS for the 1st Cassette cable, route the cable in the same way as the ASF PE Sensor FFC, and then put it through the hole and secure it with the rib shown above.

2nd Cassette Sensor Holder

 Route the 2nd Cassette Sensor cable through the cutout (x2) on the Sensor

Holder.

 Route the 2nd Cassette Sensor cable through the groove, rib (x3) and hook

(x2) on the Frame Base Assy.

 Route the 2nd Cassette Sensor cable at the rear of the Parallel Adjustment

Bush Left and secure it with acetate tape at the point shown above.

PW Sensor

CN4

CN1CN3

 Routing the FFCs/cables to the Relay Board B

• PE Sensor FFC (CN7): Route the PE Sensor FFC along the shape of the Gear Holding Plate as shown above and secure it with double-sided

• PF Encoder Sensor FFC (CN2): Connect PF Encoder Sensor FFC to the connector on the Relay Board B.  Routing the FFCs/cables to the Main Board

• CR Motor cable (CN30): Route the CR Motor cable through the hook (x2) on the Gear Holding Plate and connect it to the connector on the

Disassembly/Reassembly Routing FFCs/cables 55

CN2

CN30

tape (x2) at the point shown above, and then connect it to the connector on the Relay Board B.

Main Board.

 Route the PW Sensor FFC along the shape of the CR Unit as shown above

and route it through the groove on the CR Unit, and then connect it to the connector (CN2) on the CR Encoder.

 Secure with the double-sided tape on the position shown above.

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 Tank Cover Open Sensor  Ink Eject CSIC cable  Main Board CN9 FFC  Main Board CN52 FFC  Main Board CN23/53 FFC

Card Slot Board

Assy

Relay Board A

Double-sided tape

Panel FFC

FFC Cover Frame

Left Frame Base Assy

Stacker Open Sensor cable

Hook Dowel

Bottom of Paper Guide Front Assy

Stacker Open Sensor

Bottom of Frame Base

Hole

Frame Base

Paper Guide Front Assy

Groove

CR Encoder FFC

Head FFC

Hole

CR Unit

Head FFC Assy

Rib

Hole

Card Slot Board Assy

Route the following cables inside the rib on the Card Slot Board Assy and connect them to the connectors on the Relay Board A.

• Tank Cover Open Sensor

• Ink Eject CSIC cable

• Main Board CN9 FFC

• Main Board CN52 FFC

• Main Board CN23/53 FFC

Panel Unit

 Panel FFC

• Route the Panel FFC along the standard line on the FFC Cover Frame and connect it to the connector (CN21) on the Main Board.

• Secure with the double-sided (x8) tape on the position shown above.

Stacker Open Sensor

When routing the Stacker Open Sensor cable, follow the procedure below.

1. Route the Stacker Open Sensor cable through the hook (x4) and dowel (x2) on the bottom of the Paper Guide Front Assy.

2. Install the Paper Guide Front Assy to the printer.

(p 51)

3. Route the Stacker Open Sensor cable through the groove and dowel (x3) and put it into the hole on the Frame Base.

4. Pull out the Stacker Open Sensor cable from the hole on the Frame Base and route it through the hook (x2).

Head FFC Assy (CR Unit side)

When routing the Head FFC Assy, follow the procedure below.

1. Route the CR Encoder FFC through the rib on the CR Unit and route it through the hole.

2. Route the Head FFC (x2) through the rib on the CR Unit and route them through the hole.

Disassembly/Reassembly Routing FFCs/cables 56

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Rear

Acetate Tape

Fold back

Front Frame

Main Board

HoleRibHead FFC Assy

Acetate TapeFold back

Hook B

Hook A

Double-sided tape

Bottom

PE Sensor

PE Sensor FFC

CR Motor cable

Main Frame

Ink Eject CSIC Cable

Air Chamber

Frame EMI

Front Frame

Double-sided tape

Panel Frame

Front Frame

Rib Double-sided tape

Head FFC Assy (Front Frame side)

Rear side of Main Frame

 Route the Head FFC Assy through the hole on the Front Frame and route it through the rib.

 Connect the Head FFC Assy to the connectors (CN43, CN42, CN41, CN40, CN50) on the Main Board and secure them with acetate tape on the Front

Frame.

Ink Eject CSIC Cable (1)

 PE Sensor FFC: Wipe the routing area of the PE Sensor FFC with ethanol.

Route the PE Sensor FFC along its routing path to the Main Frame and secure it with double-sided tape (x4) at the point shown above.

 CR Motor cable: Route the cable by engaging the point 70 mm from the ferrite core on the hook A on the Main Frame and route the other part of the

cable through the hook (x3).

Ink Eject CSIC Cable (2)

Route the FFC of CSIC connector as shown below.

1. Secure with two pieces of double-sided tape onto the Air Chamber Tube Assy.

2. Secure with one piece of tape onto the Frame EMI and with three pieces onto the Front Frame.

Disassembly/Reassembly Routing FFCs/cables 57

Route the FFC of CSIC connector as shown below.

1. Route through the three ribs on the Panel Frame.

2. Secure with one piece of double-sided tape onto the Front Frame.

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Right Frame Base

PS Cable

Acetate Tape

Key Slot

Slit

Hook

ASF PE Sensor FFC

Slit

Hook

Acetate Tape

Key Slot

Panel Frame

Tank Cover Open Sensor

Photo Interrupter Cable

Hook Slit Rib

PS Cable (1)

PS Cable (2)

Route the PS Cable as shown below.

1. Route through the hook and the four slits on the Right Frame Base and secure with acetate tape onto the Air Chamber Tube Assy.

2. Route through the hook and four slits on the key slot.

Photo Interrupter

Route the PS Cable as shown below.

1. Route through the two slits and four hooks on the Panel Frame.

Route the Tank Cover Open Sensor cable as shown below.

1. Route through the slit and three hooks on the Key Slot.

2. Route the three ribs on the Panel Frame.

Disassembly/Reassembly Routing FFCs/cables 58

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CHAPTER 3

ADJUSTMENT

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Epson ET-7700/L7160

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.

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

Program when replacing the Main Board is required, the Paper Guide Lower Por ou s Pad must be replaced with the Main Board at the same time.

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

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

 When replacing the Main Board, 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.

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

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

• The “Mechanism Adjustment” should be performed just after reinstalling or reassembling the part or unit.

• The “Adjustments using the Adjustment Program” need to be performed after reassembling the printer completely.

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

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

Revision D

Adjustment Required Adjustments 60

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Table 3-1. Required Adjustment List

Adjustment Type Mechanism adjustment

Priority

Adjustment Item

Purpose Check if the PG is within the standard.

Checking the Platen Gap

Revision D

Printhead

PW Sensor

Scanner Unit

Scanner Motor Assy

Paper Guide Upper Assy

Right Frame Base Assy

PS Unit

Left Frame Base Assy

Part Name

Main Board

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace (Read OK)

Replace (Read NG)

Remove

Replace (Read OK)

---

Replace (Read NG)

Panel Unit

Panel Assy

CR Guide Rail Assy

Parallelism Adjustment Bushing Right

Front Frame

Star Wheel Holder Assy

Printout pattern

How to judge

Adjustment program

Tool See p74

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

See " 3.3.1 Checking the Platen Gap (p74)" for the details.

---

Adjustment Required Adjustments 61

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Table 3-1. Required Adjustment List

Adjustment Type Mechanism adjustment

Priority

Adjustment Item

Purpose Check if the PG is within the standard.

Parallelism Adjustment Bushing Left

Main Frame Assy

CR Motor

PE Sensor

Paper Guide Front Assy

EJ Roller Assy

PF Roller Assy

Frame Base Rear Cover Assy

Part Name

Paper Guide Lower Porous Pad E

Paper Guide Lower Porous Pad C

Paper Guide Lower Porous Pad

PF Motor Assy

Frame Base

Duplex Unit

MSF Frame Assy

Printout pattern

How to judge

Adjustment program

Tool See p74

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

See " 3.3.1 Checking the Platen Gap (p74)" for the details.

Checking the Platen Gap

---

Adjustment Required Adjustments 62

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Revision D

Table 3-1. Required Adjustment List

Adjustment Type Mechanism adjustment

Priority

Adjustment Item

Purpose Check if the PG is within the standard.

2nd Casette Assy

2nd Casette

1st Casette Assy

Part Name

CD-R Tray

Printer Mechanism Replace

Printout pattern

How to judge

Adjustment program

Tool See p74

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

See " 3.3.1 Checking the Platen Gap (p74)" for the details.

Checking the Platen Gap

---

Adjustment Required Adjustments 63

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NGOK

-2

-1

0 1 2

OK NGNG

Table 3-2. Required Adjustment List

Adjustment Type Adjustment using the Adjustment Program

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

Adjustment Item

Purpose

Printhead

PW Sensor

Scanner Unit

Scanner Motor Assy

Part Name

Paper Guide Upper Assy

Right Frame Base Assy

PS Unit

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Remove

Replace

Initialize

EEPROM

data copy

Setting

(Including S/

No. & MAC

address

Head ID

input

Ink charge

Maintenance counter reset

Photo

sensor light

level

adjustment

Head

angular

adjustment

PF/EJ

adjustment

First dot position / PW

adjustment

Bi-D

adjustment

Paper skew adjustment

deteriorati

on offset

CD/DVD

print counter

clear

deteriorati

on offset

setting)

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

To write saledestinationspecific settings, the serial number and the adjustment initial value into the Main Board after replacing it. And also to set the MAC address as necessary.

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

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

To reset the waste ink counter after replacing the Paper Guide Lower Porous Pad

Corrects the amount of light of PW and PE sensors to adjust their paper levels.

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

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

To correct the mounting position of the PW Sensor on a software basis to adjust the detection position and Nozzle position dispersion.

To correct the paper detection positions and the mounting positions of the PE Sensor by software control.

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

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

To reset the counter according to the replaced parts.

Initializes the CD-R print counter when replacing the CDR tray to reset the correction value for the CDR tray’s deterioration applied according to the CD-R print counter.

Corrects the amount of light using software to adjust the deterioration of the sensor by mist or similar causes.

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

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

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

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

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

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

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

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

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

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

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

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

motor

heat

protecti

control

motor

heat

protecti

control

SCN

motor

heat

protecti

control

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

Printout pattern

How to judge

Adjustment program

Tool

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

--- --- ---

---

Ink counter is

reset when performing Ink charge.

Fill Ink tank

with Ink to

prevent

mismatch

between Ink

counter and

actual

remaining

Ink.

See " 3.2.2.3

Photo sensor light level adjustment (p70)" for

the details.

---



Band pattern

Enter the values of the most straight lines.



Microweave pattern

Enter the value for the group of which the gaps between the two color bars are the

OK NGNG

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

PW Adjustment

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

1st dot adjustment

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

-2 -1 0 1 2

-2

-1

0 1 2

-2 -1 0 1 2

-2

-1

0 1 2

See "

3.2.2.2 Scanner Motor Heat Protectio n (p70)"

for the details.

---

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

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

--- ---

See " 3.2.2.4

Initialize PW deterioration offset (p71) "

for the details.

See " 3.2.2.1 CR

Motor Heat Protection Control / PF Motor Heat Protection (p69) "

for the details.

lines.

smallest.

O OOOOOOO O OOOOOOOOO

--- --- --- --- --- --- --- --- Ruler --- --- --- --- --- --- --- --- ---

Adjustment Required Adjustments 64

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