Konica Minolta bizhub C360 Service Manual page 777

23. IMAGE QUALITY PROBLEM
23.3.18 Printer monocolor: uneven density in main scan direction
A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Drum unit/
developing unit
2
3 PH unit
4 Transfer roller
5 Transfer belt unit Transfer belt unit makes positive
6
7
722
Check item
The surface of the PC drum is
scratched.
Dirty on the outside.
The surface of the PH window is
dirty.
Check that the spring does not
come off during the pressure oper-
ation of the transfer roller.
contact with plates on rails.
Is abnormality found in the cam
gear?
The problem has been eliminated
through the checks of steps up to 6.
Field Service Ver. 2.1 Feb. 2012
Result Action
YES Change drum unit.
YES Clean.
YES Clean with cleaning jig.
NO Correct.
Change transfer roller unit.
NO Check and correct contacts.
YES Change image transfer belt unit.
NO Change developing unit.
→ Change PH unit.
→ Change high voltage unit.
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