Epson L351, L300, L301, L355, L358 Service Manual
...
SERVICE MANUAL
Color Inkjet Printer
L350/351, L300/301, L355/358
L210/211, L110/111
CONFIDENTIAL
SEMF12-007
Notice:
All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or
by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of
SEIKO EPSON CORPORATION.
All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be
detected, SEIKO EPSON would greatly appreciate being informed of them.
The contents of this manual are subject to change without notice.
The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this
manual or the consequences thereof.
EPSON is a registered trademark of SEIKO EPSON CORPORATION.
Note :Other product names used herein are for identification purpose only and may be trademarks or registered
trademarks of their respective owners. EPSON disclaims any and all rights in those marks.
Copyright 2012 SEIKO EPSON CORPORATION
Printer CS Quality Assurance Department
Confidential
Safety Precautions
All safety procedures described here shall be strictly adhered to by all parties servicing and maintaining this
product.
DANGER
Strictly observe the following cautions. Failure to comply could result in serious bodily injury or loss of life.
1. Always disconnect the product from the power source and peripheral devices when servicing the product or
performing maintenance.
2. When performing works described in this manual, do not connect to a power source until instructed to do so.
Connecting to a power source causes high voltage in the power supply unit and some electronic components
even if the product power switch is off. If you need to perform the work with the power cable connected to a
power source, use extreme caution to avoid electrical shock.
WARNING
Strictly observe the following cautions. Failure to comply may lead to personal injury or loss of life.
1. Always wear protective goggles for disassembly and reassembly to protect your eyes from ink in working. If
any ink gets in your eyes, wash your eyes with clean water and consult a doctor immediately.
2. When using compressed air products; such as air duster, for cleaning during repair and maintenance, the use
of such products containing flammable gas is prohibited.
PRECAUTIONS
Strictly observe the following cautions. Failure to comply may lead to personal injury or damage of the product.
1. Repairs on Epson product should be performed only by an Epson certified repair technician.
2. No work should be performed on this product by persons unfamiliar with basic safety knowledge required for
electrician.
3. The power rating of this product is indicated on the serial number/rating plate. Never connect this product to
the power source whose voltages is different from the rated voltage.
4. Replace malfunctioning components only with those components provided or approved by Epson;
introduction of second-source ICs or other non-approved components may damage the product and void any
applicable Epson warranty.
5. 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
• Points to be checked before packing the printer
• 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 "2.2 Disassembly/Reassembly
Procedures (p30)".
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Revision Status
Revision Date of Issue Description
A July 31, 2012 First Release
B September 6, 2012
Chapter 1
"1.1.1 Troubleshooting Workflow (p9)"
"1.2 Power-On Sequence (p11) "
Chapter 2
"2.1.4 Standard Operation Time for Servicing the Product (p22) "
"2.1.5 Checks and Precautions before Disassembling (p25)"
"2.2 Disassembly/Reassembly Procedures (p30)"
"2.3 Detailed Disassembly/Reassembly Procedure for each Part/Unit (p40)"
"2.4 Routing FFCs/cables (p49) "
Chapter 3
"3.1 Required Adjustments (p53) "
"3.3.1 Checking the Platen Gap (p60) "
"3.3.2 CR/PF Belt Tension Check (p62) "
Chapter 5
"5.1 Connector Diagram (p72) "
"5.2 Points to be checked before packing the printer (p73) "
"5.3.3 Securing the Ink Supply Tank Assy/Top Cover (p76) "
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L350/L300/L355/L210/L110 Series
Chapter 1 Troubleshooting
1.1 Troubleshooting......................................................................................................................................................... 9
1.1.1 Troubleshooting Workflow .............................................................................................................................. 9
1.2 Power-On Sequence ................................................................................................................................................ 11
1.3 Fatal Error Code List ............................................................................................................................................... 13
1.3.1 Printer Fatal Error Code ................................................................................................................................. 13
1.3.2 Scanner Fatal Error Code ............................................................................................................................... 15
Chapter 2 Disassembly/Reassembly
2.1 Overview ................................................................................................................................................................. 17
2.1.1 Tools ............................................................................................................................................................... 17
2.1.2 Jigs .................................................................................................................................................................. 17
2.1.2.1 Making the Spring Hook Jig.................................................................................................................. 17
2.1.3 Locations of the Parts/Units ........................................................................................................................... 18
2.1.4 Standard Operation Time for Servicing the Product ...................................................................................... 22
2.1.5 Checks and Precautions before Disassembling .............................................................................................. 25
2.1.5.1 Factors which Affect the Print Quality .................................................................................................. 25
2.1.5.2 Factors which Affect the Safety of Service Personnel such as Ink Leakage during Operation ............ 26
2.2 Disassembly/Reassembly Procedures ..................................................................................................................... 30
2.2.1 Disassembly Flowchart................................................................................................................................... 31
2.2.2 Disassembly Flowchart (Printhead/Main Board) ........................................................................................... 39
2.3 Detailed Disassembly/Reassembly Procedure for each Part/Unit........................................................................... 40
2.4 Routing FFCs/cables ............................................................................................................................................... 49
Revision B
Contents
Chapter 3 Adjustment
3.1 Required Adjustments ............................................................................................................................................. 53
3.2 Adjustment Program................................................................................................................................................ 58
3.2.1 Operating Environment .................................................................................................................................. 58
3.2.2 Details of the Adjustment Program ................................................................................................................ 58
3.2.2.1 CR Motor Heat Protection Control / PF Motor Heat Protection Control .............................................. 58
3.2.3 Scanner Motor Heat Protection Control ......................................................................................................... 59
3.3 Mechanism Adjustment / Check ............................................................................................................................. 60
3.3.1 Checking the Platen Gap ................................................................................................................................ 60
3.3.2 CR/PF Belt Tension Check............................................................................................................................. 62
Chapter 4 Maintenance
4.1 Overview ................................................................................................................................................................. 65
4.1.1 Cleaning .......................................................................................................................................................... 65
4.1.2 Lubrication...................................................................................................................................................... 65
4.2 Lubrication Points and Instructions......................................................................................................................... 66
Chapter 5 Appendix
5.1 Connector Diagram ................................................................................................................................................. 72
5.2 Points to be checked before packing the printer...................................................................................................... 73
5.3 Protection for Transportation .................................................................................................................................. 74
5.3.1 Securing the CR Unit...................................................................................................................................... 74
5.3.2 Securing the Paper Support Assy ................................................................................................................... 75
5.3.3 Securing the Ink Supply Tank Assy/Top Cover............................................................................................. 76
7
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CHAPTER 1
TROUBLESHOOTING
Confidential
L350/L300/L355/L210/L110 Series
1.1 Troubleshooting
This section describes the troubleshooting workflow and fatal error information.
In this chapter, the product names are called as follows:
L350 Series: L350/L351
L300 Series: L300/L301
L355 Series: L355/L358
L210 Series:
L110 Series: L110/L111
1.1.1 Troubleshooting Workflow
The following page describes the troubleshooting workflow. Follow the flow when troubleshooting problems.
L210/L211
Revision B
Troubleshooting Troubleshooting 9
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L350/L300/L355/L210/L110 Series Revision B
Start
Turn on the power
*1
Does printer turn on the
power?
Yes
Is Power-on sequence
finished without error?
Yes
Standby condition
Print check pattern
Does an error occur
when printing?
Yes
Is printing operation
finished without trouble?
Yes
Copy an image
Is scanning operation
finished without trouble?
Yes
*3
Finish
No
No
No
No
No
Major problem without
1
Scanner failure
[Presumable Cause]
• Contamination of Scanner Glass
• Contamination of Document Pad
• CIS Unit bonding failure
• CIS Unit damage
• Scanner Motor damage
• Insufficient grease
[Major Troubleshooting]
• Scanner Glass cleaning
• Document Pad cleaning
• Document Pad replacement
• CIS Unit replacement
• Scanner Motor replacement
• Lubrication of grease
[Presumable Cause]
• PS Unit damage
• Main Board damage
[Major Troubleshooting]
• PS Unit replacement
• Main Board replacement
error message
No Power
*2
1
Fatal error
Please refer to
List (p13)"
[Phenomenon]
• Poor printing quality
• Ink stain on paper
•Dot missing
• Paper eject without printing
[Presumable Cause]
• Driver / Panel mis-setting
• Contamination of CR scale
• Contamination of Printhead
cover
• Printhead damage
• Ink clogging of Printhead
• Contamination on Cap Unit /
Wiper of Ink System Assy
• Ink System Assy damage
• Float of Porous Pad on Paper
Guide Front
• Narrower/Wider PG
(out of standard)
• PE Sensor Lever damage
• PE Sensor damage
• Ink tank ventilation film gets
wet.
[Major Troubleshooting]
• Driver / Panel re-setting
• CR Scale replacement
• Printhead cover cleaning
• Printhead cleaning
• Ink Cartridge replacement
• Printhead replacement
• Rubber cleaning of Cap Unit
• Ink System Assy replacement
• Porous Pad re-installation
• Printer replacement
• PE Sensor Lever replacement
• PE Sensor replacement
(Main Board replacement)
• Ink tank replacement
" 1.3 Fatal Error Code
.
Major problem without error message
Poor Printing
Incomplete Initial Ink Charge
[Occurrence Condition]
Ink LED is ON and STM
indicates "Initial ink charging is
not complete".
[Major Occurrence Timing]
Print start timing.
[Troubleshooting]
Perform initial ink charge
Poor Paper Loading
[Presumable Cause]
• Use of 3rd party media
• Edge guide mis-setting
• Foreign material
• Part come-off
• Contamination of LD Roller or
PF roller
[Major Troubleshooting]
• Recommendation of EPSON
media
• Edge guide re-setting
• Foreign material removal
• Part re-installation
• Roller replacement
Abnormal Noise
[Presumable Cause]
• Foreign material
• Insufficient grease
•Gear damage
[Major Troubleshooting]
• Foreign material removal
• Lubrication of grease
• Gear replacement
Blank printing
[Phenomenon]
Blank printing
[Presumable Cause]
• Valve closes
• Ink tank ventilation film gets
wet
• Ink tube crumples
• Ink tube connection is
incomplete.
[Major Troubleshooting]
• Open valve
• Ink tank replacement
• Ink tube re-installation
Major problem with error message
Maintenance error
[Occurrence Condition]
This error occurs when
maintenance counter in EEPROM
exceeds the specified value.
[Major Occurrence Timing]
• Power-on timing
• Print start timing
• Cleaning timing
• Ink Cartridge replacement
timing
[Troubleshooting]
• Porous Pad replacement &
Maintenance counter reset
Paper Jam error
[Occurrence Condition]
This error occurs when top/
bottom of paper is not detected by
PE Sensor in the specified steps of
paper loading / ejecting operation
correctly.
[Major Occurrence Timing]
• Power-on timing
• Paper loading timing
• Paper eject timing
[Major Troubleshooting]
1 Perform paper eject operation
from operation panel.
• Success
Starts paper feeding
operation again if printer has
print data.
•Fail
Occurs paper jam error
again.
2 If fail in the above 1, remove
the paper by opening Scanner
Unit.
3 Perform paper eject operation
from operation panel again.
• Success
Starts paper feeding
operation again if printer has
print data.
•Fail
Occurs paper jam error
again.
4 If fail in the above 3, check
foreign material / part comeoff / PE Sensor Lever / PE
Sensor / Porous Pad on Paper
Guide Front / Main board.
Ink End error
[Occurrence Condition]
This error occurs when ink
counter reaches ink end level.
[Major Occurrence Timing]
• Power-on timing
• Print start timing
• Cleaning timing
[Troubleshooting]
• Refill ink and reset ink counter
by panel.
No Paper error
[Occurrence Condition]
This error occurs when top of
paper can not be detected
correctly by PE Sensor in the
specified steps up to completion
of the paper loading operation.
(No paper / No loading / large
paper skew)
[Major Occurrence Timing]
• Paper loading timing
[Major Troubleshooting]
1 Set paper in ASF and perform
paper feed operation.
2 If the paper stops before
reaching PE Sensor, remove it
and check the paper condition.
3 A) If paper is OK, set paper in
ASF and move edge guides to
appropriate position, and
perform 2 again.
B) If damage in the above 2,
check foreign materials /
parts come-off / parts
transformation in paper
path.
4 If not resolved by 3-A & 3-B,
check foreign material / Part
come-off / surface condition of
LD Roller or PF Roller / PE
Sensor Lever / PE Sensor /
Main Board / PF Motor.
Paper Jam Fatal error
[Occurrence Condition]
This error occurs when CR Unit is
blocked by jammed paper.
[Major Occurrence Timing]
• Power-on timing
[Major Troubleshooting]
• Remove jammed paper
[NOTE]
On this product, if CR Unit
touches jammed paper, CR Unit
moves back in the opposite
direction so that customer can
remove the paper. However, if CR
Unit cannot move in this
sequence, this error occurs.
Double Feed error
[Occurrence Condition]
When manual duplex printing is
selected using the printer driver,
this error occurs if the actual
paper length detected by PE
Sensor does not match with the
paper length specified in the
printer driver. (The error occurs
when the actual length is longer
than the theoretical length
specified in the driver.)
[Major Occurrence Timing]
• Paper loading timing
• Paper eject timing
[Troubleshooting]
• PE Sensor Lever replacement
• PE Sensor replacement
(Main Board replacement)
• Main Board replacement
[NOTE]
This error may occur in the
manual duplex printing if the
inverted sheet printed on the first
side sticks to the second sheet
when the first side printing is
complete and the sheet is inverted
and set to ASF to print on the
other side.
Paper Size Unmatch error
[Occurrence Condition]
This error occurs if the actual
paper length detected by PE
Sensor does not match with the
paper length specified in the
printer driver. (The error occurs
no matter when the actual length
is longer or shorter than the
theoretical length specified in the
driver.)
[Major Occurrence Timing]
• Paper eject timing
[Troubleshooting]
• PE Sensor Lever replacement
• PE Sensor replacement
(Main Board replacement)
• Main Board replacement
*1: If the Hopper of ASF on the returned product touches the LD Roller, the initial ink charge has
not been completed for the product yet.
*2: 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.
*3: In case of “Not Trouble Found”, check fatal error code.
If the reason for the return is evident, first check the phenomenon user
claims recurs, then proceed to the troubleshooting.
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.
Troubleshooting Troubleshooting Workflow 10
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L350/L300/L355/L210/L110 Series
1.2 Power-On Sequence
This section describes the power-on sequences in two conditions. The preconditions are as follows.
Condition 1: Normal power-on sequence (See Table 1-1.)
Turning on the printer after turning it off without an error.
Initial ink charge has finished and every cartridge has sufficient ink.
No paper on the paper path.
The Printhead is capped with the Cap Assy.
The CR Unit is normally fixed by the Change Lever.
Maintenance error recovery has never been performed.
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 overflow
2-1.Checks the waste ink counter if the waste ink overflow is occurring.
3. Seeking the home position
3-1.The CR Unit moves to the 80-digit side slowly and confirms it touches the Change Lever (CR lock).
*1
*3
Revision B
CR Unit/PF Roller
movement and
position
*2
3-2.The CR Unit moves to the 0-digit side slowly.
3-3.After the PE Sensor checks if paper exists, the PF Motor rotates clockwise for one second and releases the CR lock.
3-4.While checking if the CR Unit does not touch the Change Lever (CR lock) or the foreign material, the CR Unit
moves to the 80-digit side slowly until it touches the Left Frame.
3-5.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.
3-6.The CR Unit moves to near its home position quickly.
4. PF Motor Measurement
4-1.The PF Motor rotates clockwise until the PF Roller turns five times to perform a load measurement.
5. Detecting ink cartridge and initializing ink system
5-1.The CR Unit returns to its home position.
6. Low temperature operation sequence
6-1.The CR Unit quickly moves back and forth between near the Change Lever and near the Left Frame for two times.
*5
*4
Note 1: The rotation directions of the PF Motor are as follows.
Clockwise: Paper is fed normally
Counterclockwise: Paper is fed backward
*2: The conditions of the CR lock are as follows.
Red CR lock is set
White CR lock is released
*3: The fatal error occurs if there is a problem such as the fuse blew.
*4: The empty suction operation may occur depending on the situation.
*5: Executed when the detected temperature is under 5
o
C (41oF) by the thermistor on the Printhead.
Troubleshooting Power-On Sequence 11
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L350/L300/L355/L210/L110 Series
Condition 2: Power-on sequence after recovering from a paper jam error (See Table 1-2.)
Turning on the printer after turning it off with a paper jam fatal error.
There still remains paper on the paper path out of the detecting area of the PE Sensor.
Maintenance error recovery has never been performed.
Revision B
Table 1-2. Condition 2: Power-on Sequence after Recovering from a Paper Jam Error
Operation
Executes No.1 to No.3 on the normal power-on sequence (Table 1-1).
4. Detecting remaining paper
4-1.5.The CR Unit returns to its home position.
4-2.The CR Unit moves to the 80-digit side and confirms there is no paper.
4-3.The CR Unit quickly returns to its home position, and displays on the LCD or with flashing LEDs that the paper jam
error occurs.
When the user removes the paper and releases the paper jam error by panel operation, the normal power-on sequence from No.1 (Table 1-1) is executed
*2
again.
Note *1: “Paper exists” is detected when the CR Unit touches the paper. When “paper does not exist” is detected, the power-on sequence
of condition 1 (Table 1-1) is executed from No.4.
*2: If the paper jam error cannot be solved after repeating the power-on sequence on condition 2 (
into the paper jam fatal error for the third time.
CR Unit/PF Roller
movement and
position
*1
Table 1-2) twice, the printer turns
To recover from the maintenance error, the dedicated software that can be downloaded
from the web site which can be accessed from STM3 is required.
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
1%.
• 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 12
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L350/L300/L355/L210/L110 Series
1.3 Fatal Error Code List
This section describes how to check the fatal error code, description, and the possible causes.
1.3.1 Printer Fatal Error Code
This section describes the printer fatal error code and the possible cause for this product.
Table 1-3. Fatal Error List (Printer)
Revision B
Error type
DC motor
error
Error
code
01H CR PID excess load error
02H CR PID excess speed error
03H CR PID reverse error
04H CR PID lock error
08H CR load position reverse error
09H CR load position excess speed error
0AH CR load position excess load error
F1H PF PID excess load error
F2H PF PID excess speed error
Error name Possible cause
• CR Motor failure
• CR Unit drive mechanism overload (paper jam, foreign object,
insufficient grease, deformation of the Main Frame)
• Some part may be detached. (Paper Guide Upper Assy, Cap Assy)
• Tooth skip of the CR Timing Belt
• Improper tension of the CR Timing Belt
• Cable disconnection
• Main Board failure (Motor driver failure)
• CR Encoder failure (contaminated/detached scale, Encoder Sensor
failure)
• Main Board failure (Motor driver failure)
• CR Encoder failure (contaminated/detached scale, Encoder Sensor
failure)
• Some external force is applied to the printer such as stopping the CR Unit
during printer operation, vibration or the like.
• Tooth skip of the CR Timing Belt
• Paper jam
• Main Board failure (Motor driver failure)
• CR Encoder failure (contaminated/detached scale, Encoder Sensor
failure)
• CR Motor failure
• CR Unit drive mechanism overload (paper jam, foreign object,
insufficient grease, deformation of the Main Frame)
• Some part may be detached. (Paper Guide Upper Assy, Cap Assy)
• Cable disconnection
• Main Board failure (Motor driver failure)
• CR Encoder failure (contaminated/detached scale, Encoder Sensor
failure)
• Main Board failure (Motor driver failure)
• CR Encoder failure (contaminated/detached scale, Encoder Sensor
failure)
• Tooth skip of the CR Timing Belt
• Improper tension of the CR Timing Belt
• Paper jam
• Main Board failure (Motor driver failure)
• CR Motor failure
• CR Unit drive mechanism overload (paper jam, foreign object, Change
Lever failure)
• Cable disconnection
• Main Board failure (Motor driver failure)
• PF Motor failure
• PF drive mechanism overload (paper jam, foreign object, insufficient
grease, deformation of the Main Frame)
• Tooth skip of the PF Timing Belt
• Improper tension of the PF Timing Belt
• Cable disconnection
• Main Board failure (Motor driver failure)
• PF Encoder failure (contaminated/detached scale, Encoder Sensor failure)
• Tooth skip of the PF Timing Belt
• Improper tension of the PF Timing Belt
• Main Board failure (Motor driver failure)
Troubleshooting Fatal Error Code List 13
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L350/L300/L355/L210/L110 Series
Revision B
Table 1-3. Fatal Error List (Printer)
Error type
DC motor
error
Motor drive
time error
Printhead
system error
Sequence
error
Sequence
error
Circuit error 80H Circuit error (include blowout of a fuse) • Main Board failure
Error
code
F3H PF PID reverse error
F4H PF PID lock error
F8H PF load position reverse error
F9H PF load position excess speed error
FAH PF load position excess load error
FCH PF load position error
D1H CR (PID) driving time error • Main Board failure (Firmware failure)
D2H CR (load position) driving time error
D3H PF (PID) driving time error • Main Board failure (Firmware failure)
D4H PF (BS) driving time error
40H Transistor temperature error • Main Board failure
41H X-Hot detect error (pre printing)
42H X-Hot detect error (after flushing)
43H Head temperature error
50H Home position error
56H
5BH Insoluble paper jam error
Contact error at ink replacement timing
(Power-off)
Error name Possible cause
• PF Encoder failure (contaminated/detached scale, Encoder Sensor failure)
• Tooth skip of the PF Timing Belt
• Improper tension of the PF Timing Belt
• Paper jam
• Paper is pulled out from the ASF side when paper is fed
• Main Board failure (Motor driver failure)
• PF Encoder failure (contaminated/detached scale, Encoder Sensor failure)
• PF Motor failure
• PF drive mechanism overload (paper jam, foreign object, insufficient
grease, deformation of the Main Frame)
• Cable disconnection
• Main Board failure (Motor driver failure)
• PF Encoder failure (contaminated/detached scale, Encoder Sensor failure)
• Tooth skip of the PF Timing Belt
• Improper tension of the PF Timing Belt
• PF Encoder failure (contaminated/detached scale, Encoder Sensor failure)
• Tooth skip of the PF Timing Belt
• Improper tension of the PF Timing Belt
• Main Board failure (Motor driver failure)
• PF Motor failure
• PF drive mechanism overload (paper jam, foreign object)
• Tooth skip of the PF Timing Belt
• Improper tension of the PF Timing Belt
• Cable disconnection
• PF Encoder failure (contaminated/detached scale, Encoder Sensor failure)
• PF Motor failure
• PF drive mechanism overload (paper jam, foreign object)
• Cable disconnection
• Change Lever failure
• CR Motor failure
• Main Board failure (Motor driver failure)
• Change Lever failure
• CR Motor failure
• Main Board failure (Motor driver failure)
• Printhead failure
• Main Board failure
• Foreign object
• Deformation of the Main Frame
• Change Lever failure
• Paper jam
• Foreign object
• Ink Cartridges are not installed correctly
• Paper jam
• Foreign object
• Deformation of the Main Frame
• Change Lever failure
• Paper jam
Troubleshooting Fatal Error Code List 14
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L350/L300/L355/L210/L110 Series
1.3.2 Scanner Fatal Error Code
This section describes the scanner fatal error code and the possible cause for this product.
Table 1-4. Fatal Error List (Scanner)
Error code Error name Possible cause
Revision B
10H Home position detection error
20H LED lightning error
• CIS Module failure
• Scanner Housing Upper failure (home seek pattern
• Scanner Housing Lower failure (the rack section
• Scanner Motor failure
• Insufficient grease
• Foreign object
• FFC disconnection/failure
• Main Board failure
• CIS Module failure
• Foreign object
• Scanner Housing Upper failure (white standard pattern
• Main Board failure
*1
is dirty)
*2
is damaged)
*1
is dirty)
Note *1: The home seek pattern and the white standard pattern are attached on the back of the Scanner Housing Upper near the home
position.
*2: The rack section is the linearly-arranged toothed area on the Scanner Housing Lower. (See Fig. 1-1.)
Rack section
Scanner Housing Lower
Figure 1-1. Rack section
Troubleshooting Fatal Error Code List 15
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CHAPTER 2
DISASSEMBLY/REASSEMBLY
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L350/L300/L355/L210/L110 Series
2.1 Overview
In this chapter, the product names are called as follows:
L350 Series: L350/L351
L300 Series: L300/L301
L355 Series: L355/L358
L210 Series:
L110 Series: L110/L111
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 "2.3 Detailed Disassembly/Reassembly Procedure for each Part/
Unit (p40)".
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.
L210/L211
Revision B
2.1.2 Jigs
Name Quantity EPSON Part Code
Spring hook jig* 1 Can be made with a commercial item See " Making the Spring Hook Jig (p17)".
Thickness gauge (1.5 mm) 2 Commercially available
Thickness gauge (2.0 mm) 2 Commercially available
Sonic tension meter 1 1294120
Note *: If performing the disassembling/reassembling procedure is difficult using tweezers such as when reassembling " Cap Lever/Cap
Assy (p43)", the spring hook jig helps you to remove/attach the spring easier.
2.1.2.1 Making the Spring Hook Jig
Fold a clip (commercial item) as shown in Fig. 2-1.
Before folding
Fold here
Clip
Figure 2-1. Making the Spring Hook Jig
After folding
Fold appropriate length
to hitch a spring.
40 mm or more
Clip
Disassembly/Reassembly Overview 17
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L350/L300/L355/L210/L110 Series
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 B
Front
Left
1
2 3 4
Right
5
6
8
Rear
7
No. Name No. Name
1 Housing Rear (p32) (L350/L355/L210 Series only) 5 Hinge (p36) (L350/L355/L210 Series only)
2 Tray Front Assy (p32) 6 Housing Right (p36) (L350/L355/L210 Series only)
3 Frame Base Assy (p34) 7 Housing Left (p32) (L350/L355/L210 Series only)
Panel Unit
• L355 Series (p 34)
Panel Board Assy (p37) / Panel Buttons (p37) /
Panel Housing Upper Assy (p37) / Panel Housing
4
Lower Assy (p37)
• L350/L210 Series (p 34)
Panel Board Assy (p37) / Panel Buttons (p37) /
Panel Housing Upper Assy (p37) / Panel Housing
Lower Assy (p37)
Scanner Unit (p32) (L350/L355/L210 Series only)
8
9 Paper Support Assy (p32)
Scanner Housing Upper (p36) / Scanner Carriage Unit
(p36) / Scanner Housing Lower (p36) / CIS Module
Unit (p36) / Scanner Motor (p36)
9
Figure 2-2. Exterior Parts
Disassembly/Reassembly Overview 18
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L350/L300/L355/L210/L110 Series
Printer mechanism
Revision B
3
2
1
8 11
10
9
4
5
6
7
12
No. Name No. Name
1 CR Driven Pulley Assy (p34) 7 CR Unit (p38)
2 CR Scale (p34) 8 PF Roller Unit (p38)
3 CR Timing Belt (p38) 9 Star Wheel Holder Assy (p36)
4 Printhead (p32) 10 Paper Guide Front Unit (p32)
5 CR Encoder Sensor (p38) 11 Paper Guide Upper Assy (p38)
6 Adapter (p36) 12 Adapter Cover (p36)
Figure 2-3. Printer Mechanism: Front
31 2
4
5
6 7 8 9
No. Name No. Name
1 LD Roller Cover (p34) 6 Cap Lever (p36)
2 LD Roller Assy (p34) 7 Cap Assy (p36)
3 Hopper (p34) 8 Porous Pad for Cap Assy (p36)
4 Retard Roller Assy (p32) 9 Pump Unit (p38)
5 Paper Back Lever (p32)
Figure 2-4. Printer Mechanism: Right
Disassembly/Reassembly Overview 19
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L350/L300/L355/L210/L110 Series
Revision B
1
3
4
5
2
7
6
No. Name No. Name
1 Wireless LAN Module (p32) (L355 Series only) 5 PF Scale (p35)
2 EJ Roller (p36) 6 PF Encoder Sensor (p35)
3 PF Motor Assy (p38) 7 EJ Roller Gear (p32)
4 PF Timing Belt (p35)
Figure 2-5. Printer Mechanism: Left
2
1
4
5 6
3
No. Name No. Name
1 CR Motor (p34) 4 Waste Ink Pad Assy (p32)
2 Head FFC (p38) 5 PE Sensor Lever (p34)
3 Main Board (p34) 6 PS Unit (p32)
Figure 2-6. Printer Mechanism: Rear
Disassembly/Reassembly Overview 20
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L350/L300/L355/L210/L110 Series
Ink Supply Tank Assy
Revision B
2
1
10
No. Name No. Name
1 Cover Joint (p35) 7 Tube Valve Holder Front (p35)
2 Top Cover (p35)
3 Right Cover (p35)
4 Ink Supply Tank Tube Assy (p35)
5 Ink Supply Tube Assy (p36) 9 Bottom Cover (p35)
3
4
9
5
6
7
8
Ink Supply Tank
8
Ink Supply Tank (Cyan) (p35)/Ink Supply Tank
(Magenta) (p35)/Ink Supply Tank (Yellow) (p35)/Ink
Supply Tank (Black) (p35)
6 Tube Valve Holder Rear (p35) 10 Left Cover (p35)
Figure 2-7. Ink Supply Tank Assy
Disassembly/Reassembly Overview 21
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L350/L300/L355/L210/L110 Series
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 L350 Series which have the most functions.
For other models described in this manual, perform the repair work referring to this standard operation time
though the time varies due to the structural difference between models.
The underlined parts/units are supplied as After Service Parts.
Table 2-1. Standard Operation Time
Time (mm:ss)
Parts/Unit
Replacement
Housing Rear 0:49 --- 0:49
Paper Support Assy
Tray Front Assy
Document Cover
Star Wheel Holder Assy
Paper Guide Front Unit
Holder Board 3:16 --- 3:16
FFC Cover Outer 2:05 --- 2:05
Print Head
Waste Ink Pad Assy
Paper Back Lever
Retard Roller Assy
Scanner Unit
Scanner Housing Upper 3:17 --- 3:17
Scanner Housing Lower 3:17 --- 3:17
CIS Module Unit 3:26 --- 3:26
Spacer 3:54 --- 3:54
CIS Module 3:54 --- 3:54
Scanner Carriage Unit 3:37 --- 3:37
Scanner Carriage 4:15 --- 4:15
CIS Holder Unit 7:05 --- 7:05
Scanner Motor 7:05 2:52 9:57
Housing Left
PS Unit
PF Encoder Sensor
PF Scale
PF Driven Pully Assy 4:10 1:10 5:20
PF Timing Belt 4:57 1:10 6:07
EJ Roller Gear
EJ Roller
Hinge 2:02 --- 2:02
Housing Right
Cap Assy
Porous Pad for Cap Assy 3:23 --- 3:23
Cap Lever 3:32 --- 3:32
0:12 --- 0:12
0:13 1:31 1:44
0:10 --- 0:10
3:47 3:18 7:05
0:37 7:44 8:21
4:54 17:39 22:33
0:31 0:45 1:16
1:41 --- 1:41
1:49 0:47 2:36
1:46 2:52 4:36
2:44 --- 2:44
3:13 1:28 4:41
3:20 --- 3:20
3:35 --- 3:35
2:58 --- 2:58
5:08 3:18 8:26
2:16 --- 2:16
3:16 --- 3:16
Adjustment/
inspection
Revision B
Total
Disassembly/Reassembly Overview 22
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L350/L300/L355/L210/L110 Series
Panel Unit 4:21 --- 4:21
Panel Housing Lower Assy 5:02 --- 5:02
Panel Board Assy 5:21 --- 5:21
Panel Bottons 5:37 --- 5:37
Panel Housing Upper Assy
CR Scale
LD Roller Cover 4:03 --- 4:03
LD Roller Assy
Hopper
FFC Holder MB 4:45 --- 4:45
Shield Plate 7:56 --- 7:56
PE Sensor Lever
Main Board
CR Motor
CR Driven Pulley Assy 3:49 3:07 6:56
Main Frame Assy 7:15 11:16 18:31
Paper GuideUpper Assy
CR Unit
CR Timing Belt
CR Encoder Sensor 13:13 --- 13:13
Head FFC
FFC Holder 13:51 --- 13:51
Frame Base Assy 8:07 8:51 16:58
Pump Unit
PF Grounding Spring 10:12 --- 10:12
Spur Gear 16.5 10:21 --- 10:21
PF Roller Unit
PF Motor Assy
Frame Base 11:43 6:53 18:36
Tube Cover 0:22 --- 0:22
Ink Supply Tank Assy 4:57 --- 4:57
Top Cover
Bottom Cover
Left Cover
Right Cover
Ink Supply Tank (Magenta)
Ink Supply Tank (Yellow)
Ink Supply Tank (Cyan)
Ink Supply Tank (Black)
Valve Lever
Cap Tank
Tube Valve Holder Front
Parts/Unit
Table 2-1. Standard Operation Time
Time (mm:ss)
Replacement
5:37 --- 5:37
4:06 --- 4:06
5:29 0:47 6:16
4:06 6:03 10:09
9:26 0:47 10:13
EEPROM Data Copy OK 8:37 1:10 9:47
EEPROM Data Copy NG 8:37 27:58 36:35
8:44 1:00 9:44
9:20 7:21 16:41
12:52 9:52 22:44
12:31 0:40 13:11
14:19 --- 14:19
9:53 --- 9:53
13:11 5:51 19:02
11:43 1:08 12:51
0:10 --- 0:10
1:44 --- 1:44
2:34 --- 2:34
2:07 --- 2:07
4:11 --- 4:11
4:11 --- 4:11
4:11 --- 4:11
4:11 --- 4:11
0:19 --- 0:19
0:22 --- 0:22
0:55 --- 0:55
Adjustment/
inspection
Total
Revision B
Disassembly/Reassembly Overview 23
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