Brother HL-J6000DW Service Manual page 126

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