Routine maintenance
67
Cleaning the drum unit A
If your printout has black or white dots or
other repeating marks at 3.7 in. (94 mm)
intervals, the drum may have foreign
material, such as glue from a label stuck on
the drum surface. Follow the steps below to
solve the problem.
a Make sure that the machine is in the
Ready mode.
b Press Menu.
c Press a or b to display
Print Reports.
Press Print Reports.
d Press a or b to display Drum Dot
Print.
Press Drum Dot Print.
e The machine will display
Press Start. Press Start.
f Leave the machine turned on for
10 minutes for the internal fan to cool
the extremely hot parts inside the
machine.
g After the machine has cooled down, turn
off the machine’s power switch.
h Press the front cover release button and
then open the front cover.
i Take out the drum unit and toner
cartridge assembly.
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