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Examples of poor print<br />
quality<br />
3.7 in.<br />
(94 mm)<br />
3.7 in.<br />
(94 mm)<br />
White Spots on black text<br />
and graphics at 3.7 in.<br />
(94 mm) intervals<br />
3.7 in.<br />
(94 mm)<br />
3.7 in.<br />
(94 mm)<br />
Black Spots at 3.7 in.<br />
(94 mm) intervals<br />
Recommendation<br />
If the problem is not solved after printing a few pages, the drum unit may<br />
have glue from label stock on the OPC drum surface.<br />
Clean the drum unit as follows:<br />
1 Position the print sample in front of the drum unit, and find the exact<br />
position of the poor print.<br />
2 Turn the drum unit gear by hand while looking at the surface of the<br />
OPC drum.<br />
Do not touch the photosensitive drum with your fingers.<br />
Photosensitive drum<br />
3 When you have located the mark on the drum that matches the print<br />
sample, wipe the surface of the OPC drum with a cotton swab until<br />
the dust or paper powder on the surface comes off.<br />
Do not try to clean the surface of the photosensitive drum with a<br />
sharp object. (e.g. ball-point pen, paper clip etc.)<br />
The drum unit may be damaged. Put in a new drum unit. (See Replacing<br />
the drum unit on page 12-30.)<br />
12 - 16 TROUBLESHOOTING AND ROUTINE MAINTENANCE
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