Brother DCP-8085DN Service Manual page 150

■ Faulty registration
1. ADF
Step Cause
Document rear
1 actuator catching
on some position
Fine adjustment
of scan start
2 position
misalignment
2. Document table
Step Cause
Fine adjustment
of scan start
1 position
misalignment
CCD unit failure
2
■ Dark
Step Cause
White level data
malfunction
1
CCD unit failure
2
Main PCB failure Is the problem solved by
3
Check
Does the document rear
actuator move
smoothly?
Is the problem solved by
performing the fine
adjustment of scan start
position.
(Function code 54)
Check
Is the problem solved by
performing the fine
adjustment of scan start
position.
(Function code 54)
Is the problem solved by
replacing the CCD unit.
<User Check>
- Check whether the setting of the contrast does not become dark.
Check
Is the problem solved by
performing the
acquisition of white level
data. (Function code 55)
Is the problem solved by
replacing the CCD unit.
replacing the main PCB.
3-78
Result Remedy
Re-assembly the document
No rear actuator.
Perform the fine
adjustment of scan start
Yes position.
(Function code 54)
Result Remedy
Perform the fine
adjustment of scan start
Yes position.
(Function code 54)
Replace the CCD unit.
Yes
Result Remedy
Perform the acquisition of
white level data. (Function
Yes
code 55)
Replace the CCD unit.
Yes
Replace the main PCB.
Yes
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