Scanner System: Color Spots - Konica Minolta bizhub C353 Service Manual

18. Image quality problem
18.3.3

Scanner system: color spots

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Original
2 ADF
Original glass
3
4
562
AA 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.
Field Service Ver. 4.0 Jun. 2008
Result Action
YES Change original.
YES Clean.
YES Wipe the surface clean with a
soft cloth.
NO Change scanner assy.
Change CCD unit.
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