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Troubleshooting
93
6
White Spots on black text
and graphics at 75 mm
(2.95 in.) intervals
Black Spots at 75 mm
(2.95 in.) intervals
If the problem is not solved after printing a few pages, the drum unit may have
glue from a label stuck on the OPC drum surface.
Clean the drum unit as follows:
6
a Put the print sample in front of the drum unit, and find the exact position of
the poor print.
b Turn the drum unit gear by hand while looking at the surface of the OPC
drum (1).
c When 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
DO NOT clean the surface of the photosensitive drum with a sharp object.
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum
unit on page 69.
Examples of poor print
quality
Recommendation
75 mm
(2.95 in.)
75 mm
(2.95 in.)
75 mm
(2.95 in.
)
75 mm
(2.95 in.
)
1
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