Confidential
2-86
■
Completely blank
■
Horizontal streaks
< User Check >
- Check that documents are not reversed.
- Check that they are set in the ADF unit securely.
Step
Cause
Solution
1
White level correction data
failure
Carry out maintenance 55.
2
First side or second side CIS
flat cable connection failure
Reconnect the first side or second side CIS flat
cable.
3
First side or second side CIS
flat cable defective
Replace the first side or second side CIS flat
cable.
4
First side or second side CIS
unit defective
Replace the first side or second side CIS unit.
5
Main PCB defective
Replace the main PCB.
< User Check >
-
Clean the d
ocument cover glass or second
side CIS glass.
-
Clean the d
ocument pressure bar.
Step
Cause
Solution
1
Foreign materials on CIS lens
Remove foreign materials.
2
First side or second side CIS
unit defective
Replace the first side or second side CIS unit.
3
White reference film of
document pressure bar of ADF
cover damaged, broken (in the
case of problem in second
side)
Replace the ADF unit.
4
White reference film of
document scanner unit
damaged, broken (in the case
of problem in first side)
Replace the document scanner unit.