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Troubleshooting
113
B
Lines across the page
Clean the corona wire inside the drum unit.
See Cleaning the corona wire uu page 69.
The drum unit may be damaged. Put in a new drum unit.
See Replacing the drum unit uu page 71.
White lines, bands or ribbing
across the page
Check the machine's environment. Conditions such as high humidity
and high temperatures may cause this print quality problem.
See Product Safety Guide: Choosing a location.
If the problem is not solved after printing a few pages, put in a new
drum unit.
See Replacing the drum unit uu page 71.
White Spots on black text
and graphics at 94 mm
intervals
Black Spots at 94 mm
intervals
Make 10-15 copies of a blank, white sheet of paper. If the problem is
not solved after printing the blank pages, the drum unit may have
foreign material, such as glue from a label, stuck on the drum. Clean
the drum unit.
See Advanced User's Guide: Cleaning the drum unit.
The drum unit may be damaged. Put in a new drum unit.
See Replacing the drum unit uu page 71.
Examples of poor print
quality
Recommendation
ABCDEFGH
abcdefghijk
ABCD
abcde
01234