Lenovo LJ2500 User Manual page 106

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Image Defect Samples Recommendation
94 mm
(3.7 in.)
94 mm
(3.7 in.)
White Spots
Printed pages have white
spots in black text and
graphics at intervals of 94
mm.
94 mm
(3.7 in.)
94 mm
(3.7 in.)
Black Spots
Printed pages have black
spots at intervals of 94 mm.
If the problem is not solved after printing a few
pages, the drum unit may have glue from label stock
on the OPC drum surface.
Clean the drum unit as follows:
1. Position the print sample in front of the drum unit,
and find the exact position of the image defect.
2. Turn the drum unit gear by hand while looking at
the surface of the OPC drum.
3. When you have located the mark on the drum
that matches the print sample, wipe the surface of
the OPC drum with a cotton swab until the dust or
paper powder on the surface comes off.
6-15
CHAPTER 6 TROUBLESHOOTING

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