Gradation Reproduction Failure; Abcd; Monocolor> Foggy Background - Epson AcuLaser C9200N Service Manual

EPSON AcuLaser C9200N
<MONOCOLOR>

GRADATION REPRODUCTION FAILURE

A. Typical Faulty Images
4036fs4048c0
B. Troubleshooting Procedure
Step Section Check Item
1 Photoconductor Dirty on the outside.
Unit
2 PH Unit The surface of the PH
Window is dirty.
3 TCR Sensor TCR Sensor window is dirty.
window
4 Adjust Density Change the setting value for
"Max Density" in the Printer
Adjust Menu.
5 The problem has been
eliminated through the checks
of steps up to 5.
Troubleshooting
4036fs4049c0
Result Action
YES Clean.
YES Clean with cleaning jig.
YES Clean.
NO Go to next step.
NO Change Photoconductor Unit.
→
Change Controller Board.
(p.198)
→
Change PH Unit. (p.175)
→
Change High Voltage Unit
(Image Transfer,
Neutralizing). (p.230)
Image quality problem
<MONOCOLOR>
FOGGY BACKGROUND
A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section Check Item
1 Photoconductor Dirty on the outside.
Unit
2 PH Unit The surface of the PH
Window is dirty.
3 TCR Sensor The color TCR Sensor
window window is dirty.
4 Adjust Density Change the setting value for
"Max Density" in the Printer
Adjust Menu.
5 Blur Margin Change the setting value for
"Blur Margin" in the Printer
Adjust Menu.
6 The problem has been
eliminated through the checks
of steps up to 5.
Revision D

ABCD

ABCD
ABCD
ABCD
ABCD
4036fs4030c0
Result Action
YES Clean.
YES Clean with cleaning jig.
YES Clean.
NO Go to next step.
NO Go to next step.
NO Change Photoconductor Unit.
→
Change Controller Board.
(p.198)
→
Change PH Unit.
→
Change High Voltage Unit
(Image Transfer,
Neutralizing). (p.230)
Confidential
(p.175)
142