White spots or black spots at 3.7 in. (94 mm) intervals
Make ten copies of a blank, white sheet of paper.
If the problem is not solved, the drum unit may have glue from a label stuck on the OPC drum surface. Clean the drum unit.
> Click here to see the details of how to clean the drum unit.
The drum unit may be damaged. Put in a new drum.
> Click here to see the details of how to replace the drum unit.
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