Brother MFC-J5335DW Service Manual page 117

■ Scanning position failure
(1) ADF
Step
1 Scanning start position out of
alignment
2 Document scanning position
actuator caught on the
surrounding parts
3 Second side CIS unit defective
(2) Document scanner unit
Step
1 Scanning start position out of
alignment
2 First side CIS unit defective
■ Dark
Step
1 White level correction data
failure
2 First side or second side CIS
unit defective
3 Main PCB defective
< User Check >
- Check that the document is placed correctly
on the document cover.
Cause
Carry out maintenance 54 to adjust the
scanning start position.
Set the document scanning position actuator
into place.
Replace the second side CIS unit.
Cause
Carry out maintenance 54 to adjust the
scanning start position.
Replace the first side CIS unit.
< User Check >
- Check if the contrast is set to "Dark."
Cause
Carry out maintenance 55.
Replace the first side or second side CIS unit.
Replace the main PCB.
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Solution
Solution
Solution
Confidential