Brother MFC-9440CN - Manual (Page 171)

Troubleshooting and routine maintenance
155
C
h
Turn the drum unit gear toward you by
hand while looking at the surface of the
drum (1).
i
When you have found the mark on the
drum that matches the print sample,
wipe the surface of the drum gently with
a cotton swab until the dust or paper
powder on the surface comes off.
CAUTION
The drum is photosensitive so DO NOT
touch it with your fingers.
DO NOT clean the surface of the
photosensitive drum with a sharp object.
DO NOT use a scrubbing or wiping motion
because this might damage the drum.
j
Turn the drum unit gear toward you by
hand to return it to the home position.
The home position of each drum can be
identified by matching the number on
the drum unit gear to the same number
on the side of the drum unit as shown in
the illustration. Make sure that the
number on each of the four drum unit
gears matches the corresponding
number on the side of the drum unit.
1