Scanner System: Blurred Image, Blotchy Image - Konica Minolta bizhub C450 Service Manual

Field Service Ver. 1.0 Mar. 2005
18.3.5

Scanner System: blurred image, blotchy image

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
1 Original
Original Cover
2
Original Glass
3
2nd/3rd Mirrors
Carriage
4
5
Check Item
Original does not lie flat.
Original Cover does not lie flat.
Original Glass tilts.
Scanner is not aligned with the
2nd/3rd Mirrors Carriage.
The problem has been eliminated
through the checks of steps up to 4.
18. Image quality problem
4036fs4031c0
Result
YES Change original.
YES Change Original Cover if it is
deformed or hinges are broken.
YES Position Original Glass correctly.
Check original loading position.
YES Perform "Focus Positioning of the
Scanner and 2nd/3rd Mirrors Car-
riage" and "Scanner Position
Adjustment."
NO Change Scanner Assy.
Change CCD Unit.
Action
383