Monocolor: Colored Spots - Konica Minolta magicolor 7450 Service Manual

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16. Image quality problem

Monocolor: colored spots

A. Typical Faulty Images

B. Troubleshooting Procedure

Imaging Unit

Colored spots

Developing bias contact terminal

makes good connection.

The surface of the PC Drum is

Dirty on the outside.

Field Service Ver. 1.0 May 2006

4036fs4052c0

Clean contact terminal and

check terminal position.

YES Change Imaging Unit.

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