Brother DCPJ525W Service Manual page 129

Tinged over the whole page
Step
1 White level data defective
2 CIS unit defective
3 Main PCB defective
User Check
- Check whether the ADF glass or scanner glass is stained.
Cause
Obtain the white level data with Function code 55.
Refer to
Replace the document scanner unit.
Replace the main PCB ASSY.
2-84
Solution
Chapter 5, Section 1.4.16.
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