Brother MFC-J6510DW

2-85
Confidential
2.4.7 Scanned-image Problems
2.4.7.1 Defective images
2.4.7.2 Troubleshooting from image defect
 Light
Light Scanning position failure Dark
Completely blank Vertical streaks
White vertical
streaks
User Check
- Check if the contrast is set to "Light."
- Clean the scanner glass or the ADF glass.
- Clean the CIS glass in the ADF unit.
Step Cause Solution
1
White level data defective
Obtain the white level data, using Function code 55.
(Refer to Chapter 5, Section 5.1.4.15.)
2 Document pressure bar stained Clean the document pressure bar.
3 Second side scanning CIS
defective
Replace the CIS unit.
4
First side scanning CIS unit
defective
Replace the scanner cover (scanner unit).
5
Main PCB defective
Replace the main PCB ASSY.