Epson Aculaser M 2000 Service Manual

EPSON AcuLaser C9200NRevision D
Troubleshooting      Image quality problem 141
Confidential
 
LOW IMAGE DENSITY (DECREASE OF ID)A. Typical Faulty ImagesB. Troubleshooting ProcedureStep
Section
Check Item
Result
Action
1
Photoconductor 
Unit
Dirty on the outside.
YES
Clean.
2
PH Unit
The surface of the PH 
Window is dirty.
YES
Clean with cleaning jig.
3
TCR Sensor 
window
The color TCR Sensor 
window on the LED Assy is 
dirty.
YES
Clean.
4
Transfer Belt 
Unit
Transfer Belt makes positive 
contact with...

EPSON AcuLaser C9200NRevision D
Troubleshooting      Image quality problem 142
Confidential
 
GRADATION REPRODUCTION FAILUREA. Typical Faulty ImagesB. Troubleshooting Procedure

 
FOGGY BACKGROUNDA. Typical Faulty ImagesB. Troubleshooting Procedure
Step
Section
Check Item
Result
Action
1
Photoconductor 
Unit
Dirty on the outside.
YES
Clean.
2
PH Unit
The surface of the PH 
Window is dirty.
YES
Clean with cleaning jig.
3
TCR Sensor 
window
TCR Sensor window is dirty.
YES
Clean.
4
Adjust Density
Change the...

EPSON AcuLaser C9200NRevision D
Troubleshooting      Image quality problem 143
Confidential
 
VOID AREAS, WHITE SPOTSA. Typical Faulty ImagesB. Troubleshooting Procedure

 
COLORED SPOTSA. Typical Faulty ImagesB. Troubleshooting Procedure
Step
Section
Check Item
Result
Action
1
Image Check
There are void areas at the 
front side or high density 
section.
YES
Refer to p.141.
2
There is void area at the rear 
side section.
YES
Change the setting value of 
TR XXX in the Printer 
Adjust Menu.
3...

EPSON AcuLaser C9200NRevision D
Troubleshooting      Image quality problem 144
Confidential
 
BLURRED IMAGEA. Typical Faulty ImagesB. Troubleshooting Procedure

 
BLANK PRINT, BLACK PRINTA. Typical Faulty ImagesB. Troubleshooting Procedure
Step
Section
Check Item
Result
Action
1
PH Unit
The surface of the PH 
Window is dirty.
YES
Clean with cleaning jig.
2
Photoconductor 
Unit
Dirty on the outside.
YES
Clean.
3
The problem has been 
eliminated through the checks 
of steps up to 2.
NO
Change...

EPSON AcuLaser C9200NRevision D
Troubleshooting      Image quality problem 145
Confidential
 
UNEVEN IMAGEA. Typical Faulty ImagesB. Troubleshooting ProcedureStep
Section
Check Item
Result
Action
1
Toner Cartridge
The Toner Cartridge of every 
color is surely installed.
NO
Re-install it.
2
PH Unit
PH Unit is surely installed.
NO
Re-install it.
3
Uneven pitch occurs in 3.0 
mm pitch.
YES
Replace PH Unit Stopper. (p.175)
4
Toner Cartridge
There is any stain or breakage 
on the Drive section of the 
Toner...

EPSON AcuLaser C9200NRevision D
Troubleshooting      Image quality problem 146
Confidential
 
WHITE LINES IN SUB SCAN DIRECTION, WHITE BANDS IN SUB SCAN 
DIRECTION, COLORED LINES IN SUB SCAN DIRECTION, AND COLORED BANDS IN SUB SCAN DIRECTIONA. Typical Faulty ImagesB. Troubleshooting ProcedureStep
Section
Check Item
Result
Action
1
Transfer Belt 
Unit
Fingerprints, oil, or other 
foreign matter is evident on 
the Transfer Belt
YES
Clean with specified solvent.
 
(Refer to Chapter 6 
 
MAINTENANCE (p....

EPSON AcuLaser C9200NRevision D
Troubleshooting      Image quality problem 147
Confidential
 
WHITE LINES IN MAIN SCAN DIRECTION, WHITE BANDS IN MAIN 
SCAN DIRECTION, COLORED LINES IN MAIN SCAN DIRECTION, AND COLORED BANDS IN MAIN SCAN DIRECTIONA. Typical Faulty ImagesB. Troubleshooting ProcedureStep
Section
Check Item
Result
Action
1
Transfer Belt 
Unit
Fingerprints, oil, or other 
foreign matter is evident on 
the Transfer Belt.
YES
Clean with specified solvent
 
(Refer to Chapter 6 
 
MAINTENANCE (p....

EPSON AcuLaser C9200NRevision D
Troubleshooting      Image quality problem 148
Confidential
 
UNEVEN DENSITY IN SUB SCAN DIRECTIONA. Typical Faulty ImagesB. Troubleshooting Procedure

 
UNEVEN DENSITY IN MAIN SCAN DIRECTIONA. Typical Faulty ImagesB. Troubleshooting Procedure
Step
Section
Check Item
Result
Action
1
Transfer Belt 
Unit
Fingerprints, oil, or other 
foreign matter is evident on 
the Transfer Belt.
YES
Clean with specified solvent.
 
(Refer to Chapter 6 
 
MAINTENANCE (p.
 331)
)
2
Transfer...

EPSON AcuLaser C9200NRevision D
Troubleshooting      Image quality problem 149
Confidential
 
LOW IMAGE DENSITY (DECREASE OF ID)A. Typical Faulty ImagesB. Troubleshooting ProcedureStep
Section
Check Item
Result
Action
1
Paper
Paper is damp.
YES
Change paper to one just 
unwrapped from its package. 
Install Paper Dehumidifying 
Heater.
2
Transfer Belt 
Unit
Terminal is dirty.
YES
Clean.
3
2nd Transfer 
Roller
2nd Transfer Roller is 
installed properly.
NO
Reinstall.
4
Charge Neutralizing Cloth is 
not...

EPSON AcuLaser C9200NRevision D
Troubleshooting      Image quality problem 150
Confidential
 
POOR COLOR REPRODUCTIONA. Typical Faulty ImagesB. Troubleshooting ProcedureStep
Section
Check Item
Result
Action
1
Paper
Paper is damp.
YES
Change paper to one just 
unwrapped from its package. 
Install Paper Dehumidifying 
Heater.
2
Transfer Belt 
Unit
Terminal is dirty.
YES
Clean.
3
2nd Transfer 
Roller
2nd Transfer Roller is 
installed properly.
NO
Reinstall.
4
Charge Neutralizing Cloth is 
not separated and...