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143
Troubleshooting
6
All black
Clean the corona wire inside the drum unit by sliding the green tab. Be sure
to return the green tab to the home position (a).
uu Cleaning the corona wire uu page 111
The drum unit may be damaged. Put in a new drum unit.
uu Replacing the drum unit uu page 104
White lines across the page
Make sure that you use paper that meets our specifications. A rough surfaced
paper or thick print media can cause this problem.
uu Acceptable paper and other print media uu page 2.
Make sure that you choose the appropriate media type in the printer driver.
The problem may disappear by itself. Print multiple blank pages to clear this
problem, especially if the machine has not been used for a long time.
The drum unit may be damaged. Put in a new drum unit.
uu Replacing the drum unit uu page 104
Line across the page
Clean the corona wire inside the drum unit.
uu Cleaning the corona wire uu page 111
The drum unit may be damaged. Put in a new drum unit.
uu Replacing the drum unit uu page 104
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: Choosing a location
If the problem is not solved after printing a few pages, put in a new drum unit.
uu Replacing the drum unit uu page 104
Examples of poor print quality Recommendation
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
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