Field Service Ver. 1.0 Jun. 2008 19. Image quality problem
325
Troubleshooting
19.3.4 Scanner system: fog
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C510DA
ABCD
ABCD
ABCD
ABCD
ABCD
Step Section Check item Result Action
1 Original Original is damaged or dirty. YES Change original.
2 ADF Original pad is dirty. YES Clean.
3
ADF does not lie flat. YES Change ADF if it is deformed or
hinges are broken.
4
Original glass Original glass is dirty. YES Wipe the surface clean with a
soft cloth.
5
Shading sheet Shading sheet is dirty. YES Wipe the surface clean with a
soft cloth.
6 Mirror, lens,
exposure lamp,
and reflectors
Mirror is dirty. YES Clean.
7 Lens is dirty. YES Clean.
8 Exposure lamp is dirty. YES Clean.
9 Reflectors are dirty. YES Clean.
10
Basic screen
Quality/Density
The problem is eliminated when the
image is produced in the manual
exposure setting.
NO Try another exposure level in
manual.
11
The problem has been eliminated
through the checks of steps up to 10.
NO Change exposure unit.
d-Color MF201
Y109660-1 Sevice Manual
d-Color MF201
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