Brother DCP-7090 Service Manual page 150

 Completely blank
<User Check>
Step
Incorrect white level
1
correction data
First or second side CIS flat
2
cable failure
First or second side CIS unit
3
failure
4 Main PCB failure
 All black
<User Check>
Step
Incorrect white level
1
correction data
First or second side CIS flat
2
cable failure
First or second side CIS unit
3
failure
4 Main PCB failure
• Check that the document is not reversed.
Cause
• Install all the latest firmwares.
Cause
2-110
Remedy
Execute "Acquire white level data
code 55)".
Replace the first or second side CIS flat
cable.
Replace the first or second side CIS unit.
Replace the main PCB ASSY.
Remedy
Execute "Acquire white level data
code 55)".
Replace the first or second side CIS flat
cable.
Replace the first or second side CIS unit.
Replace the main PCB ASSY.
(Function
(Function
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