Incorrect Color Image Registration - Konica Minolta bizhub c20 Service Manual

Field Service Ver. 1.0 Sep. 2008
20.1.13

Incorrect color image registration

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1
Transfer belt unit
2
3
4 Transfer roller
5
Imaging unit
6
7
Check item
Is the transfer belt dirty with fin-
gerprints, oil, or other foreign mat-
ter?
Is the transfer belt dirty or
scratched?
Is the drive coupling to the
machine dirty?
Is the transfer roller dirty or
scratched?
Is the imaging unit installed in
position?
Is the photo conductor
scratched?
Has the problem been eliminated
through the checks of steps up to
6?
20. Image quality problems
Result Action
YES Clean.
Wipe the surface clean of dirt with
a soft cloth.
YES
Change a scratched transfer belt
for a transfer belt.
YES Clean.
YES Change the transfer roller.
NO Reinstall the imaging unit.
YES Change the imaging unit.
Change the transfer belt unit.
NO Change the PH unit.
Change the print control board.
A0CRF4C515DA
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