Brother DCPJ525W Service Manual page 128

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User Check
- Check whether documents are loaded upside down.
- Check that documents are loaded correctly in the ADF.
Step
1 White level data defective
2 CIS unit defective
3 Main PCB defective
Vertical streaks
Step
1 CIS unit defective
White vertical streaks
User Check
- Check whether the ADF glass or scanner glass is stained.
Step
1 White reference film stained
CIS unit defective
Cause
Obtain the white level data with Function code 55.
Refer to
Replace the document scanner unit.
Replace the main PCB ASSY.
User Check
- Check whether the ADF glass or scanner glass is stained.
'
Cause
Replace the document scanner unit.
Cause
Replace the document scanner unit.
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Solution
Chapter 5, Section 1.4.16.
Solution
Solution
Confidential