Konica Minolta bizhub C203 Service Manual page 611

18. Image quality problem
18.3.23 Printer monocolor: colored spots
A. Typical faulty images
B. Troubleshooting procedure
Step Section
Imaging unit
1
2
3
566
AA AA
Check item
Developing bias contact terminal
makes good connection.
The surface of the PC drum is
scratched.
Dirty on the outside.
Field Service Ver. 1.0 Jul. 2007
Result Action
NO Clean contact terminal and
check terminal position.
YES Change imaging unit.
YES Clean.
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