Printer 4-Color: Colored Spots - Konica Minolta bizhub C35P Service Manual

15. IMAGE QUALITY PROBLEMS
15.2.21

Printer 4-color: colored spots

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Imaging unit
2 Transfer belt unit Fingerprints, oil, or other foreign
3
4 Transfer roller
unit
5 Paper path
6 Fuser unit
7
188
AA AA
Check item
The surface of the PC drum is
scratched.
matter is evident on the image
transfer belt.
Transfer belt is dirty or scratched.
Transfer roller is dirty or scratched.
There is foreign matter on paper
path.
Fusing belt is dirty or scratched.
The problem has been eliminated
through the checks of steps up to 6.
Field Service Ver. 1.0 May 2010
Result Action
YES Change imaging unit.
YES Clean it with the tender cloth or
paper which is dusted with the
toner.
YES Clean dirty belt with a soft cloth.
Change transfer belt unit if belt is
damaged.
YES Change transfer roller unit.
YES Remove foreign matter.
YES Change fuser unit.
NO Change transfer belt unit.
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