Konica Minolta bizhub C35 Service Manual page 276

DRAFT
Field Service Ver. 1.0 Feb. 2010
16.2.14 Printer monocolor: uneven density in sub scan direction
A. Typical faulty images
B. Troubleshooting procedure
Step Section
2 Imaging unit
2
3 PH unit
4 Transfer roller
unit
5
6 Transfer belt
unit
7
Check item
The surface of the PC drum is
scratched.
Dirty on the outside.
The surface of the PH window is
dirty.
Image transfer roller is installed
properly.
Image transfer roller is dirty or
scratched.
Is abnormality found in the cam
gear?
The problem has been eliminated
through the checks of steps up to 7.
16. IMAGE QUALITY PROBLEM
Result Action
YES Change imaging unit.
YES Clean.
YES Clean with cleaning jig.
NO Reinstall.
YES Change transfer roller unit.
YES Change transfer belt unit.
NO Change PH unit.
Change High voltage unit.
Printer control board.
A02EF4C520DA
237