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Routine Maintenance
5
Cleaning the drum unit
5
If your printout has white or black dots 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 the machine is in Ready mode.
b
Press
a
or
b
to choose
Machine Info.
. Press
OK
.
c
Press
a
or
b
to choose
Drum Dot Print
. Press
OK
to print the drum dot check sheet.
d
Leave the machine turned on for 10 minutes for the internal fan to cool the extremely hot parts inside the
machine.
e
Turn off the machine’s power switch.
f
Press the front cover release button and then open the front cover.
g
Take out the drum unit and toner cartridge assembly.