Troubleshooting and routine maintenance
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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 fr ont 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 find the substance on the
drum surface that matches the print
sample, gently dab the surface of the
OPC drum with a cotton swab that is
lightly dampened with isopropyl alcohol.
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