Examples of poor print quality
ABCDEFGH abcdefghijk
A B C D a b c d e 0 1 2 3 4Black lines down the page
Printed pages have toner
stains down the page
ABCDEFGH abcdefghijk
A B C D a b c d e 0 1 2 3 4White lines down the page
ABCDEFGH | |||
abcdefghijk | |||
| A B C | D | ||
| e | ||
| a b c d | |||
4 | |||
0 1 2 3 |
| ||
|
| ||
Image skewed
Recommendation
Clean the corona wire inside the drum unit by sliding the green tab. See Cleaning the corona wire uu page 74.
Make sure the green tab of the corona wire is at the home position (a).
The toner cartridge may be damaged. Put in a new toner cartridge. See Replacing the toner cartridge uu page 68.
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum unit uu page 76.
The fuser unit may be contaminated. Call Brother Customer Service at:
In USA:
In Canada:
Make sure that foreign material such as a torn piece of paper, sticky notes or dust is not inside the machine and around the drum unit and toner cartridge.
The toner cartridge may be damaged. Put in a new toner cartridge. See Replacing the toner cartridge uu page 68.
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum unit uu page 76.
Make sure that the paper or other print media is loaded correctly in the paper tray and that the guides are not too tight or too loose against the paper stack.
Set the paper guides correctly.
See Loading paper and print media uu page 9.
If you are using the MP tray, see Loading paper in the
The paper tray may be too full.
See Loading paper and print media uu page 9.
Check the paper type and quality.
See Acceptable paper and other print media uu page 19.
Check for loose objects such as torn paper inside the machine.
If the problem only occurs during duplex printing, check for torn paper in the duplex tray, verify that the duplex tray is inserted completely and verify that the back cover is closed completely.
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