Troubleshooting and routine maintenance
131
Cleaning the drum unit C
aTake out the drum unit and toner
cartridge assembly, and then take out
the toner cartridge from the drum unit.
bPut the print sample in front of the drum
unit, and find the exact position of the
poor print.
cTurn the white gear on the drum as you
check the surface of the OPC drum (1).
dWhen you have found the mark on the
drum that matches the print sample,
wipe the surface of the OPC drum with a
dry cotton swab until the dust or glue on
the surface comes off.
CAUTION
The OPC drum is photosensitive so do not
touch it with your fingers.
Do not use a scrubbing or wiping motion
because this might damage the drum.
DO NOT clean the surface of the OPC
drum with a sharp object, such as a ball-
point pen, because this might cause
permanent damage to the drum unit.
1