Epson ET-7700, L7160 Service Manual
SERVICE MANUAL
Color Inkjet Printer
Epson ET-7700/L7160
CONFIDENTIAL
SEMF16-014
Notice:
All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or
by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of
SEIKO EPSON CORPORATION.
All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be
detected, SEIKO EPSON would greatly appreciate being informed of them.
The contents of this manual are subject to change without notice.
The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this
manual or the consequences thereof.
EPSON is a registered trademark of SEIKO EPSON CORPORATION.
Note :Other product names used herein are for identification purpose only and may be trademarks or r egistered
trademarks of their respective owners. EPSON disclaims any and all rights in those marks.
Copyright 2017 SEIKO EPSON CORPORATION
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
7
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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
8
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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
No
5
Is scanning operation
finished without
trouble?
What is returned reason?
2
Print check pattern
Yes
No
Yes
No
Yes
No
Is Power-on sequence
finished without error?
Does the printer enter
standby state without error?
3
Does an error occur
when printing?
Start
Turn on the power
1
No
Does printer turn on the
power?
Yes
4
Is printing operation
finished without trouble?
(p 11)
(p 11)
(p 12)
(p 11)
(p 11)
Copy an image
A
(p 11)
Yes
(p 11)
B
No
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
1
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
2
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)
A
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)
B
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)
3
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
HP
PGTyp.
PG++
080 HP
PGTyp.
PG++
080 HP
PGTyp.
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.
*1
*3
Revision D
CR Unit/PF Roller
movement and
position
*2
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 *
4
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++
PGTyp.
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
Troubleshooting Power-On Sequence 13
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Epson ET-7700/L7160
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
*1
o
C (41oF) by the thermistor on the Printhead.
Revision D
CR Unit/PF Roller
movement and
position
*2
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
080 HP
PG++
PGTyp.
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)
• 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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Epson ET-7700/L7160
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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Epson ET-7700/L7160
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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Epson ET-7700/L7160
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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Epson ET-7700/L7160
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.
Disassembly/Reassembly Overview 21
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Epson ET-7700/L7160
Front
4
3
6
5
1
2
Right
7
8
Left
9
10
Rear
11
12
13
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)/
3
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
6
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
7
(p45)/CSIC Cable Holder Assy (p45)
Figure 2-1. Exterior Parts
Left Frame Base Assy (w/Main Board) (p40)
10
Maintenance Box Cover (p39)/Maintenance Box (p39)
13
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Epson ET-7700/L7160
2
3
6
7
4
5
8
9
10
1
4
1
2
3
6
5
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)
1
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
4
Supply 100 (p45)
Disassembly/Reassembly Overview 23
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Epson ET-7700/L7160
2
3
5
7
1
6
4
8
1
2
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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Epson ET-7700/L7160
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
1:30 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
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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Epson ET-7700/L7160
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
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
Disassembly/Reassembly Overview 26
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Epson ET-7700/L7160
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
21:32 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
Disassembly/Reassembly Overview 27
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Epson ET-7700/L7160
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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Epson ET-7700/L7160
2.
EMI Frame
CR Guide
Rail Assy
3.
MSF Frame Assy
2. 2.
3.
2.
4.2.
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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