Field Service Ver. 1.0 Jun. 2008
19. Image quality problem
323
T
roubleshooting
19.3.2
Scanner system: white lines in main scan direction, white bands in main
scan direction, colored lines in main scan direction, and colored bands in
main scan direction
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C508DA
White lines in main
scan direction
White bands in main
scan direction
Color bands in main
scan direction
Color lines in main scan
direction
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
Original glass
Original glass is dirty.
YES
Wipe the surface clean with a
soft cloth.
4
Machine Adjust-
ment
o
Scan
Area
o
Feed
adjustment
(Service Mode)
The adjustment value for [Feed]
falls within the specified range.
NO
Readjust.
5
The problem has been eliminated
through the checks of steps up to 4.
NO
Change exposure unit.
d
-Color
M
F
201
Y109660-1 Sevice Manual