Scanning Image Defect Troubleshooting; Image Defect Examples; Troubleshooting Image Defect - Brother DCP-9010CN Service Manual

11. SCANNING IMAGE DEFECT
TROUBLESHOOTING

11.1 Image Defect Examples

11.2 Troubleshooting Image Defect

Image defect related problems are end user recoverable if following the User Check items.
If the same problem occurs, follow each procedure in the order of the number described in the
Step column in the tables below.
■ Light on the page
Step
1 White level data
malfunction
2 CIS unit failure
3 Main PCB failure
Light Faulty registration
Completely blank Vertical streaks
<User Check>
- Check whether the setting of the contrast does not become light.
Cause
Is the problem solved by
performing the
acquisition of white level
data.
Is the problem solved
after replacing the
document scanner unit?
Is the problem solved
after replacing the Main
PCB ASSY?
White vertical streaks
Fig. 3-18
Check
Yes
(Function code 55)
Yes
Yes
3-103
Dark
Remedy
Result
Perform the acquisition
of white level data.
(Function code 55)
Replace the document
scanner unit.
Replace the main PCB
ASSY.
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