Field Service Ver. 1.0 Jun. 2008
19. Image quality problem
325
T
roubleshooting
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
M
F
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Y109660-1 Sevice Manual