User Manual

Table Of Contents
124
Lines across the page
Clean the corona wire inside the drum unit.
uu Cleaning the corona wire uu page 79
The drum unit may be damaged. Put in a new drum unit.
uu 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.
uu Product Safety Guide: Choose a safe location for your product
If the problem is not solved after printing a few pages, put in a new
drum unit.
uu 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.
uu Cleaning the drum unit uu page 81
The drum unit may be damaged. Put in a new drum unit.
uu Replacing the drum unit uu page 71
Examples of poor print
quality
Recommendation
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01234