Printer Monocolor: Colored Spots - Konica Minolta Magicolor 8650 Service Manual

16. Image quality problem
16.3.9

Printer monocolor: colored spots

A. Typical faulty images
B. Troubleshooting procedure
Step Section
Imaging unit
1
2
3
356
Confidential – for internal use only, do not distribute
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. 2.0 Nov. 2007
Result Action
NO Clean contact terminal and
check terminal position.
YES Change imaging unit.
YES Clean.
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