Brother FAX-2840 Service Manual page 117

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<User Check>
- Check that the document is not reversed.
Step
1 CIS unit failure
2 Main PCB failure
Vertical streaks
Step
1 CIS unit failure
White vertical streak
<User Check>
- Check that the CIS glass is not stained.
Step
Incorrect white level data
1
2 CIS unit failure
Cause
Replace the CIS unit.
Replace the main PCB ASSY.
<User Check>
- Check that the CIS glass is not stained.
Cause
Cause
Perform the acquisition of white level data.
(Function code
Replace the CIS unit.
2-80
Remedy
Remedy
Replace the CIS unit.
Remedy
55)
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