Field Service Ver. 1.0 Jun. 2008
19. Image quality problem
327
T
roubleshooting
19.3.6
Scanner system: incorrect color image registration, sync shift (lines in
main scan direction)
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C512DA
AA
AA
Step
Section
Check item
Result
Action
1
Original
Original does not lie flat.
YES
Change original.
2
ADF
ADF does not lie flat.
YES
Change ADF if it is deformed or
hinges are broken.
3
Scanner rails
Foreign matter on rails.
YES
Clean and apply lubricant.
4
Scanner drive
wires
Wire kinks or is damaged.
YES
Correct or change.
5
Exposure unit
Exposure unit moves smoothly.
NO
Adjust the scanner motor timing
belt.
o
Change scanner motor.
o
Change BCRUB.
6
The problem has been eliminated
through the checks of steps up to 5.
NO
Change exposure unit.
d
-Color
M
F
201
Y109660-1 Sevice Manual