Scanner System: Fog - Konica Minolta bizhub C25 Service Manual

22. IMAGE QUALITY PROBLEM
22.2.4

Scanner system: fog

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Original
2 ADF
3
4 Original glass
5 Basic screen
QUALITY/
DENSITY
6
348
ABCD
ABCD
ABCD
ABCD
ABCD
Check item
Original is damaged or dirty.
Original pad is dirty.
ADF does not lie flat.
Original glass is dirty.
The problem is eliminated when the
image is produced in the manual
exposure setting.
The problem has been eliminated
through the checks of steps up to 5.
Field Service Ver. 1.1 May 2011
Result Action
YES Change original.
YES Clean.
YES Change ADF if it is deformed or
hinges are broken.
YES Wipe the surface clean with a
soft cloth.
NO Try another exposure level in
manual.
NO Change scanner unit.
Change MFPB/1.
A02EF4C510DA