Scanned-Image Problems; Defective Images; Troubleshooting From Image Defect - Brother DCPJ525W Service Manual

4.7

Scanned-image Problems

4.7.1 Defective images

Light
Completely blank
Tinged over the whole page

4.7.2 Troubleshooting from image defect

Light
Step
1 White level data defective
2 CIS unit defective
5 Main PCB defective
Scanning position failure
Vertical streaks
User Check
- Check if the contrast is set to "Light."
- Clean the scanner glass or ADF glass.
Cause
2-81
Solution
Obtain the white level data with Function code 55.
Refer to Chapter 5, Section
Replace the document scanner unit.
Replace the main PCB ASSY.
Dark
White vertical
streaks
1.4.16.
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