Konica Minolta bizhub C35, Service Manual

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DRAFT
Field Service V er. 1.0 Feb. 2010 16. IMAGE QUALITY PROBLEM
253
bizhub C35
TROUBLESHOOTING
16.2.30 Printer 4-color: incorrect color image registration
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C512DA
AA
AA AA
Step Section Check item Result Action
1 Machine
condition V ibration is given to the machine
after main power switch has been
turned ON.
YES Turn off the main power switch
and turn it on again more than 10
seconds after.
2 Transfer belt
unit Fingerprints, oil, or other foreign
matter is evident on the transfer belt. YES Clean it with the tender cloth or
paper which is dusted with the
toner.
3 Transfer belt is dirty or scratched. YES Clean dirty belt with a soft cloth.
Change transfer belt unit if belt is
damaged.
4 Drive coupling to the machine is
dirty. YES Clean.
5 Imaging unit The surface of the PC drum is
scratched. YES Change imaging unit.
6 Transfer roller
unit Transfer roller is installed properly. NO Reinstall.
7 Transfer roller is dirty or scratched. YES Change transfer roller unit.
8 The problem has been eliminated
through the checks of steps up to 7. NO Change transfer belt unit.
Change printer control board.
Change MFP board.