Konica Minolta bizhub C200 Service Manual page 422

Field Service Ver. 2.0 Dec. 2008
19.3.6 Scanner system: incorrect color image registration, sync shift (lines in
main scan direction)
A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Original
ADF
2
3 Scanner rails
Scanner drive
4
wires
Exposure unit
5
6
AA
AA AA
Check item
Original does not lie flat.
ADF does not lie flat.
Foreign matter on rails.
Wire kinks or is damaged.
Exposure unit moves smoothly.
The problem has been eliminated
through the checks of steps up to 5.
19. Image quality problem
Result Action
YES Change original.
YES Change ADF if it is deformed or
hinges are broken.
YES Clean and apply lubricant.
YES Correct or change.
NO Adjust the scanner motor timing
belt.
→ Change scanner motor.
→ Change BCRUB.
NO Change exposure unit.
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