Field Service Ver. 1.0 Jun. 2008 19. Image quality problem
345
Troubleshooting
19.3.22 Printer monocolor: void areas, white spots
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C523DA
Void areas White spots
Step Section Check item Result Action
1
Image Check There are void areas at the front
side or high density section.
YES
See P.340
2
There is void area at the rear side
section.
YES Perform [Transfer Adjust] of
[Image Process Adjustment]
under Service Mode.
3
Imaging unit The surface of the PC drum is
scratched.
YES Change imaging unit.
4 Dirty on the outside. YES Clean.
5
Toner cartridge Foreign matter or caked toner in
the toner cartridge.
YES Remove foreign matter.
6
Installation
environment
Is the atmospheric pressure at the
installation site low?
YES Make the following adjustment:
[Service Mode] o [Image Pro-
cess Adjustment] o [Dev. Bias
Choice].
d-Color MF201
Y109660-1 Sevice Manual
d-Color MF201
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