Brother MFC-J6935DW - Page 127

Confidential
2-87
■ White horizontal streaks
■ Colored over the whole page
■ Entire image is distorted or deformed
< User Check >
- Clean the document cover glass or second side CIS
glass.
-
Clean the document pressure bar.
Step Cause Solution
1 White reference film of document
scanner unit stained (in the case of
problem in first side)
Clean the white reference film of
document scanner unit.
2 White reference film of document
pressure bar of ADF stained (in the
case of problem in second side)
Clean the white reference film of
document pressure bar of ADF.
3 First side or second side CIS unit
defective
Replace the first side or second side CIS
unit.
4 White reference film of document
scanner unit damaged, broken (in the
case of problem in first side)
Replace the document scanner unit.
5 White reference film of document
pressure bar of ADF damaged,
broken (in the case of problem in
second side)
Replace the ADF unit.
< User Check >
- Clean the document cover glass or second
side CIS glass.
-
Clean the document pressure bar.
Step Cause Solution
1 White level correction data
failure
Carry out maintenance mode 55.
2 First side or second side CIS
unit defective
Replace the first side or second side CIS unit.
3 Main PCB defective Replace the main PCB.
Step Cause Solution
1 CIS type mismatches Carry out maintenance mode 59 to rewrite firmware.
2 Ink refill ASSY defective Replace the ink refill ASSY.