Brother DCP-7080 Service Manual page 126

 Completely blank
Step
Incorrect white level correction data Execute "Acquire white level data
1
First or second side CIS unit failure Replace the first or second side CIS unit.
2
Main PCB failure
3
 All black
Step
Incorrect white level correction data Execute "Acquire white level data
1
First or second side CIS unit failure Replace the first or second side CIS unit.
2
Main PCB failure
3
<User Check>
- Check that the document is not reversed.
Cause
<User Check>
- Install all the latest firmwares.
Cause
2-91
Remedy
code: 55)".
Replace the main PCB ASSY.
Remedy
code: 55)".
Replace the main PCB ASSY.
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