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<Clean the drum unit as follows>
If you have print quality problems, clean the drum unit as follows:
(1) Put the print sample in front of the drum unit, and find the exact position of the poor print.
Fig. 1-7
(2) Turn the drum unit gear to the direction of the arrow of the figure by hand while looking at
the surface of the exposure drum.
Fig. 1-8
(3) When you have found the mark on the drum that matches the print sample, wipe the
surface of the exposure drum with a dry cotton swab until the dust or glue on the surface
comes off.
Fig. 1-9
CAUTION:
DO NOT clean the surface of the photosensitive drum with a sharp object.