Brother MFC-9450CDN - Cleaning the Drum Unit

Troubleshooting and routine maintenance
149
C
j Push the drum unit in until it stops.
k Close the front cover of the machine.
l Plug the machine’s power cord back into
the AC electrical socket first, and
reconnect all cables and telephone line
cord. Turn on the machine’s power
switch.
Cleaning the drum unit C
If you have print quality problems caused by
repeating marks on the page, clean the drum
unit as follows.
a Press the front cover release button and
then open the front cover.
b Close the front cover of the machine.
The machine starts warming up, wait
until it finishes warming up before going
on to step c.
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75 mm
75 mm