Brother DCP-J4110DW Service Manual page 122

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Step
1 White level correction data failure Carry out maintenance 55.
2 First side or second side CIS flat
cable connection failure
3 The first side or second side CIS
flat cable defective
4 First side or second side CIS unit
defective
5 Main PCB defective
Straight vertical stripes

Step
1 CIS lens foreign materials
2 First side or second side CIS unit
defective
User Check
- Check that documents are not reversed.
- Check that they are set in the ADF tray securely.
Cause
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 ASSY.
User Check
- Clean document cover glass or ADF glass.
- Clean the document pressure bar.
Cause
Remove foreign materials.
Replace the first side or second side CIS unit.
2-85
Solution
Solution
Confidential