Scanned-Image Problems; Defective Images - Brother MFC Series Service Manual

4.8

Scanned-image Problems

4.8.1

Defective images

The entire
image is light
Completely
blank
Shades in the entire image
4.8.2 Scanned-image Problems
■ The entire image is light
Step
1 White level correction data
failure
2 CIS unit defective
3 Main PCB defective
Scanning position failure
Vertical streaks
Entire image
is distorted
<User Check>
- Check if the contrast is set to "Light".
- Clean the document cover glass or ADF glass.
- Clean the Document pressure bar.
Cause
Carry out maintenance 55.
Replace the CIS unit.
Replace the Main PCB ASSY.
2-70
Images are
dark
White
vertical
streaks
Solution
Confidential