Brother MFC-J5335DW Service Manual page 120

■ Image is stretched
(1) ADF
Step
1 ADF motor defective
(2) Document scanner unit
Step
1 FB motor defective
■ All black
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
■ Shadows when scanning by document scanner
Step
1 The ADF hinges are deformed, and the
document cover cannot be closed properly.
2 First side CIS unit defective
3 Dirt on the document cover glass
4 Main PCB defective
Cause
Replace the ADF unit.
Cause
Replace the document scanner unit.
< User Check >
- Install the latest firmware.
Cause
< User Check >
- Check that the document cover is firmly closed.
- Clean the document cover glass.
Cause
2-84
Solution
Solution
Solution
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.
Solution
Replace the ADF hinge.
Replace the first side CIS unit.
Replace the document scanner unit.
Replace the main PCB.
Confidential