Brother DCP9040CN - Manual (Page 90)

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2
Push the drum unit in until it stops.
g
Close the front cover of the machine.
h
Plug the machine’s power cord back into
the AC electrical socket first, and
reconnect all cables. Turn on the
machine’s power switch.
Cleaning the corona wires
C
If you have print quality problems, clean the
corona wires as follows:
a
Turn off the machine’s power switch.
Disconnect all cables, and unplug the
power cord from the electrical socket.
b
Press the front cover release button and
then open the front cover.