Confidential
2-88
White vertical streaks
Colored over the whole page
User Check
- Clean document cover glass or ADF glass.
- Clean the document pressure bar.
Step Cause Solution
1 White reference film of
document scanner unit stained
(in the case of problem in first
side)
Clean document scanner unit glass at white
reference film.
2 White reference film of
document pressure bar of ADF
cover stained (in the case of
problem in second side)
Clean the white reference film of document
pressure bar of ADF cover.
3 First side or second side CIS
unit defective
Replace the first side or second side CIS unit.
4 White reference film of
document scanner unit
damaged, broken (in the case
of problem in first side)
Replace the document scanner unit.
5 White reference film of
document pressure bar of ADF
cover damaged, broken (in the
case of problem in second
side)
Replace the ADF cover.
User Check
- Clean document cover glass or ADF glass.
- Clean the document pressure bar.
Step Cause Solution
1 White/black level correction
data failure
Carry out maintenance 55.
2 First side or second side CIS
unit defective
Replace the first side or second side CIS unit.
3 Main PCB defective Replace the main PCB ASSY.