Brother MFC-J6935DW - Page 128

Confidential
2-88
■ Image is stretched
(1) ADF
(2) Document scanner unit
■ All black
■ Shadows when scanning by document scanner
Step Cause Solution
1 ADF motor defective Replace the ADF unit.
Step Cause Solution
1 FB motor defective Replace the document scanner unit.
< User Check >
- Install the latest firmware.
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 >
- Check that the document cover is firmly closed.
- Clean the document cover glass.
Step Cause Solution
1 The ADF hinges are deformed, and the
document cover cannot be closed properly.
Replace the ADF hinge.
2 First side CIS unit defective Replace the first side CIS unit.
3 Dirt on the document cover glass Replace the document scanner unit.
4 Main PCB defective Replace the main PCB.