Solution - Epson AcuLaser C9200N Service Manual

EPSON AcuLaser C9200N

3.5.3 Solution

<MONOCOLOR>
WHITE LINES IN SUB SCAN DIRECTION, WHITE BANDS IN SUB SCAN
DIRECTION, COLORED LINES COLORED BANDS IN SUB SCAN
DIRECTION
A. Typical Faulty Images
White lines in Sub White bands in Sub
Scan Direction Scan Direction
4036fs4021c0
B. Troubleshooting Procedure
Step Section
1 Photoconductor The surface of the PC
Unit Drum is scratched.
2 Dirty on the outside.
3 Contact terminals make
good connection between
each PU and machine.
4 Developing bias contact
terminal makes good
connection.
5 PH Unit The surface of the PH
Window is dirty.
6 The problem has been
eliminated through the
checks of steps up to 5.
Troubleshooting
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Colored lines in Sub Colored bands in
Scan Direction Sub Scan Direction
4036fs4022c0
4036fs4023c0
Check Item Result
YES Change Photoconductor Unit.
YES Clean.
NO Clean contact terminals.
NO Clean contact terminal and
check terminal position.
YES Clean with cleaning jig.
NO Change Photoconductor Unit.
→
Change Transfer Belt.
(p.162)
→
Change PH Unit.
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<MONOCOLOR>
WHITE LINES IN MAIN SCAN DIRECTION, WHITE BANDS IN MAIN
SCAN DIRECTION, COLORED LINES IN MAIN SCAN DIRECTION,
COLORED BANDS IN MAIN SCAN DIRECTION
A. Typical Faulty Images
White lines in Main
Scan Direction
4036fs4025c0
4036fs4024c0
B. Troubleshooting Procedure
Step Section
1 Photoconductor
Action
Unit
2
3
4
5 PH Unit
6
(p.175)
Image quality problem
White bands in Main Colored lines in Main
Scan Direction Scan Direction
4036fs4026c0 4036fs4027c0
Check Item Result
The surface of the PC YES Change Photoconductor Unit.
Drum is scratched.
Dirty on the outside. YES Clean.
Contact terminals make NO Clean contact terminals.
good connection between
each PU and machine.
Developing bias contact NO Clean contact terminal and
terminal makes good check terminal position.
connection.
The surface of the PH YES Clean with cleaning jig.
Window is dirty.
The problem has been NO Change Photoconductor Unit.
→
eliminated through the
checks of steps up to 5.
(p.162)
→
Revision D
Colored bands in
Main Scan
Direction
4036fs4028c0
Action
Change Transfer Belt.
Change PH Unit. (p.175)
139
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