Brother DCP-8070D Service Manual page 175

■ White vertical streaks
Step Cause
Scanner module
failure
1
ADF or
document glass
failure
2
<User Check>
- Check if the ADF glass or document glass is not stained.
Check
Is the problem solved by
replacing the CCD unit
(CCD model) or
document scanner unit.
(CIS model)
Is the problem solved by
replacing the scanner
top cover ASSY (CCD
model) or document
scanner unit. (CIS
model)
3-84
Result Remedy
Replace the CCD module.
(CCD model)
Yes Replace the document
scanner unit. (CIS model)
Replace the top cover
ASSY. (CCD model)
Replace the document
Yes
scanner unit. (CIS model)
Confidential