Konica Minolta bizhub C200 Service Manual page 364

Field Service Ver. 1.0 Jun. 2008
19.3.4 Scanner system: fog
A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Original
2 ADF
3
Original glass
4
Shading sheet
5
6 Mirror, lens,
exposure lamp,
7
and reflectors
8
9
Basic screen
10 Quality/Density
11
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.
Shading sheet is dirty.
Mirror is dirty.
Lens is dirty.
Exposure lamp is dirty.
Reflectors are 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 10.
19. Image quality problem
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.
YES Wipe the surface clean with a
soft cloth.
YES Clean.
YES Clean.
YES Clean.
YES Clean.
NO Try another exposure level in
manual.
NO Change exposure unit.
A02EF4C510DA
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