Brother MFC-L5750DW - Page 154

2-119
Confidential
 Faulty registration
 Dark
(1) ADF
Step Cause Remedy
1
Deviation of the scanning start
position
Execute "Fine adjustment of scan start
position. (function code: 54)".
2
Document scanning position
actuator caught in some sections of
the machine
Reattach the document scanning position
actuator.
(2) Document scanner unit
Step Cause Remedy
1
Deviation of the scanning start
position
Execute "Fine adjustment of scan start
position. (function code: 54)".
2 First side CIS unit failure Replace the first side CIS unit.
<User Check>
• Check that the contrast setting is not too dark.
• Clean the document hold.
Step Cause Remedy
1
Incorrect white level correction data Execute "Acquire white level data (function
code: 55)".
2 First or second side CIS unit failure Replace the first or second side CIS unit.
3 Main PCB failure Replace the main PCB ASSY.