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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 power outlet first, and reconnect
all cables. Turn on the machine’s power
switch.
Cleaning the drum unit C
If you have print quality problems, clean the
drum unit as follows.
a Turn off the machine’s power switch.
Disconnect all cables, and unplug the
power cord from the AC power outlet.
b Press the front cover release button and
then open the front cover.