L800/L801 Revision A
Confidential
Appendix Troubleshooting Workflow 103
3
2
C H E C K
P O I N T
This flowchart is compiled based on the following contents.
Our experience regarding the quality problem.
ESK’s repair data on FY08 / FY09 models.
Printer Mechanism specification for L800/L801.
Fatal error
Please refer to “ 4.3.2 Fatal Error
Code (p104)”
for troubleshooting.
Maintenance error
[Occurrence Condition]
This error occurs when
maintenance counter in EEPROM
exceeds the specified value.
(It also occurs when running the
power cleaning too many times.)
[Major Occurrence Timing]
• Power-on timing
• Print start timing
• Cleaning timing
[Troubleshooting]
• Waste Ink Tray replacement
• Waste Ink Pad Lower
replacement
• Ink Supply Tube Assy
replacement
• Maintenance counter reset
Ink End error
[Occurrence Condition]
This error occurs when ink in Ink
Supply Tank(s) is/are empty.
[Major Occurrence Timing]
• Power-on timing
• Print start timing
• Cleaning timing
• Print timing
[Troubleshooting]
• Refill the ink(s)
Card error
[Occurrence Condition]
This error occurs when a paper
(business card size) remains stuck
inside the printer because it is not
inserted vertically.
[Major Occurrence Timing]
• Power-on timing
• Print timing
[Troubleshooting]
• Push the “Paper” button to
eject a paper.
• If the error occurs again after
performing above, check
foreign material / PE Sensor /
PE Sensor Lever / PW Sensor.
Paper Jam error
[Occurrence Condition]
This error occurs when top/
bottom of paper is not detected by
PE Sensor in the specified steps of
paper feeding operation correctly.
[Major Occurrence Timing]
• Power-on timing
• Paper loading timing
• Paper eject timing
[Major Troubleshooting]
1 Push the “Paper” button to
eject the paper.
• Success
Starts paper feeding operation
again if printer has print job.
•Fail
Paper jam error occurs again.
2 If fail in the above 1), remove
the paper.
3 Push “Paper” button again.
• Success
Starts paper feeding operation
again if printer has print job.
•Fail
Paper jam error occurs again.
• If fail in the above 3), check
foreign material / part come-
off / EJ Frame Assy / PE
Sensor / PE Sensor Lever /
Porous Pad on Paper Guide
Front / PW Sensor / Main
board.
No Paper error
[Occurrence Condition]
This error occurs when top of
paper is not detected by PE Sensor
in the specified steps of paper
loading operation correctly.
(No paper / No loading / large
paper skew)
[Major Occurrence Timing]
• Paper loading timing
[Major Troubleshooting]
1 Put papers in paper support and
push the “Paper” button.
2 If a paper stops before reaching
PE Sensor, remove it and
check the paper condition.
3 A) If no damage in the above 2),
set edge guide correctly after
putting papers in
paper
support
and retry.
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 and Retard Roller/
PE Sensor / PE Sensor Lever /
Main Board / PF Motor /
Change Lever.
Double Feed error
*3
[Occurrence Condition]
This error occurs on the following
case.
• A paper is ejected without
printing during paper loading
operation.
• Actual paper length is longer
than theoretical one.
[Major Occurrence Timing]
• Paper loading timing
• Paper feed timing
• Paper eject timing
[Troubleshooting]
• PE Sensor Lever replacement
• PE Sensor replacement
• PW Sensor replacement
• Main Board replacement
No Power
*1
[Presumable Cause]
• Power Supply Board damage
• Main Board damage
[Major Troubleshooting]
• Power Supply Board
replacement
• Main Board replacement
Poor Printing
[Phenomenon]
• Poor printing quality
• Ink stain on paper
• Dot missing
• Paper eject without printing
[Presumable Cause]
• Driver 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
• Incorrect PG
• PE Sensor Lever damage
• PE Sensor damage
• Contamination of PF Roller / LD
Roller / EJ Roller / EJ Frame Assy
[Major Troubleshooting]
• Driver re-setting
• CR Scale replacement
• Printhead cover cleaning
• Printhead cleaning
• Adapter replacement
• Ink Supply Tube replacement
• Open valve of Ink Supply Tank
• Printhead replacement
• Rubber cleaning of Cap Unit
• Ink System Assy replacement
• Porous Pad re-installation
• PG readjustment
• PE Sensor replacement
• PE Sensor Lever replacement
• PF Roller / LD Roller / EJ Roller
/ Star Wheel on EJ Frame Assy
cleaning
• Printer Mechanism replacement
Poor Paper Loading
[Presumable Cause]
• Use of 3rd party media
• Edge guide mis-setting
• Foreign material
• Part come-off
• LD Roller damage
• Retard Roller damage
• Change Lever damage
[Major Troubleshooting]
• Recommendation of EPSON
media
• Edge guide re-setting
• Foreign material removal
• Part re-installation
• LD Roller replacement
• Retard Roller replacement
• Change Lever replacement
Abnormal Noise
[Presumable Cause]
• Foreign material
• Insufficient grease
•Gear damage
[Major Troubleshooting]
• Foreign material removal
• Lubrication of grease
• Gear replacement
Finish
*4
Turn on the printer
1
1
Major problem without error message
Is printing operation
finished without trouble?
Start
Yes
No
Yes
No
Yes
No
Yes
No
Is printing operation
finished without error?
*1: 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.
*2: The total number of printing (TP) and CD-R printing (CP) are printed on the check pattern. If any of the two counts
exceeds the specified value, make sure to replace the required parts.
*3: Only for manual duplex print
*4: In case of “Not Trouble Found”, check fatal error code.
Major problem with error message
Major problem without
error message
Is Power-on sequence
finished without error?
Standby condition
Does printer turn on the
power?
Print check pattern
*2
Blank Printing
[Presumable Cause]
• Valve closes
• Ink tank ventilation film gets
wet
• Ink tube crumples
• Ink tube connection is
incomplete.
• Adapter damage
[Major Troubleshooting]
• Open valve of Ink Supply Tank
• Ink tank replacement
• Ink tube re-installation
• Adapter replacement
3
CD-R Guide error
[Occurrence Condition]
This error occurs on the following
case.
• The CD-R guide (stacker) is in
the CD-R printing position at
power-ON.
• The CD-R guide (stacker)
position does not match with
the print job.
[Major Occurrence Timing]
• Power-on timing
• Print start timing
• Print timing
[Troubleshooting]
• When the error occurs at
turning on the printer, set the
CD-R guide (stacker) in the
lower paper position.
• When the error occurs at
printing, set the CD-R guide
(stacker) in correct position
according to the print job.
• If the error occurs again though
confirming two of the above,
check CD-R Guide Sensor /
Main Board.
Paper Jam error
Please refer to “ Paper Jam error”
of “Error occurs in printing
operation”.
CD-R Tray error
[Occurrence Condition]
This error occurs when CD-R
Tray is not detected.
[Major Occurrence Timing]
• CD-R Tray loading timing
[Troubleshooting]
1 Set the CD-R Tray with a
medium correctly and then
push the “Paper” button to load
the tray.
• Success
Starts the CD-R Tray loading
operation again if printer has
print job.
•Fail
CD-R Tray error occurs
again.
2 If fail in the above 1), check
CD-R Tray / CD-R Tray
Sensor / PW Sensor / Main
Board.
CD-R Guide error
Please refer to “ CD-R Guide
error”
of “Error occurs in printing
operation”.
2
Soiled printing surface
[Presumable Cause]
• Contamination of the LD
Roller or LD Roller Shaft by
ink mist
[Major Troubleshooting]
• LD Roller replacement
• LD Roller Shaft cleaning
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