Troubleshooting
Examples of poor print quality
ABCDEFGH abcdefghijk
A B C D a b c d e 0 1 2 3 4
Black 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 4
White 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.
uuCleaning the corona wire uu page 118
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.
uuReplacing the toner cartridge uu page 104
The drum unit may be damaged. Put in a new drum unit.
uuReplacing the drum unit uu page 111
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 | 6 |
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.
uuReplacing the toner cartridge uu page 104
The drum unit may be damaged. Put in a new drum unit.
uuReplacing the drum unit uu page 111
Make sure that the paper or other print media is loaded properly in the paper tray and that the guides are not too tight or too loose against the paper stack.
Set the paper guides correctly.
uuPrinting on plain paper, thin paper or recycled paper from Tray 1 and Tray 2 uu page 8
If you are using the MP tray, see Printing on plain paper, thin paper, recycled paper and bond paper from the MP tray uu page 12.
The paper tray may be too full.
uuLoading paper and print media uu page 8
Check the paper type and quality.
uuAcceptable paper and other print media uu page 2
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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