3-104
Confidential
â– Faulty registration
(1) ADF
(2) Document table
â– Dark
Step Cause Check
Result
Remedy
1 Fine adjustment
of scan start
position
misalignment
Is the problem solved
by performing the fine
adjustment of scan start
position.
(Function code 54)
Yes Perform the fine
adjustment of scan start
position.
(Function code 54)
2 Document rear
sensor actuator
catching on some
position
Does the document rear
sensor actuator move
smoothly?
No Re-assembly the
document rear sensor
actuator.
Step Cause Check
Result
Remedy
1 Fine adjustment
of scan start
position
misalignment
Is the problem solved
by performing the fine
adjustment of scan start
position.
(Function code 54)
Yes Perform the fine
adjustment of scan start
position.
(Function code 54)
2 CIS unit failure Is the problem solved
after replacing the
document scanner unit?
Yes Replace the document
scanner unit.
<User Check>
- Check whether the setting of the contrast does not become dark.
Step Cause Check
Result
Remedy
1 White level data
malfunction
Is the problem solved by
performing the
acquisition of white level
data. (
Function code 55
)
Yes Perform the acquisition
of white level data.
(Function code 55)
2 CIS unit failure Is the problem solved
after replacing the
document scanner unit?
Yes Replace the document
scanner unit.
3 Main PCB failure Is the problem solved
after replacing the
main
PCB
ASSY?
Yes Replace the
main PCB
ASSY.
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