Scanner System: Color Spots - Konica Minolta bizhub C450 Service Manual

Field Service Ver. 1.0 Mar. 2005
18.3.3

Scanner System: color spots

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
1 Original
2 Original Cover
Original Glass
3
4
AA
Check Item
Original is damaged or dirty.
Original Pad is dirty.
Original Glass is dirty.
The problem has been eliminated
through the checks of steps up to 3.
18. Image quality problem
4036fs4029c0
Result
YES Change original.
YES Clean.
YES Wipe the surface clean with a
soft cloth.
NO Change Scanner Assy.
Change CCD Unit.
Action
381