Brother MFC Series Service Manual page 103

■ Scanning position failure
(1) ADF
Step
1 Scanning start position out of
alignment
2 Document caught in the
document scanning position
actuator
(2) Document scanner unit
Step
1 Scanning start position out of
alignment
2 CIS unit defective
■ Images are dark
Step
1 White level correction data
failure
2 CIS unit defective
3 Main PCB defective
<User Check>
- Check if the Document guide is correctly set to
the document size.
- Check that the document is placed correctly on
the Document cover.
Cause
Adjust the scanning start position.
(Refer to
Set the Document scanning position actuator
into place.
Cause
Adjust the scanning start position.
(Refer to
Replace the CIS unit.
<User Check>
- Check if the contrast is set to "Dark".
Cause
Carry out maintenance 55.
(Refer to
Replace the CIS unit.
Replace the Main PCB ASSY.
2-71
Solution
Chapter 5, Section 1.4.14)
Solution
Chapter 5, Section 1.4.14)
Solution
Chapter 5, Section 1.4.15)
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