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 |
| ||
|
| ||
Page skewed
Recommendation
Clean the corona wire inside the drum unit by sliding the green tab. See Cleaning the corona wire on page 42.
Make sure the green tab of the corona wire is at the home position (a).
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum unit on page 35.
The toner cartridge may be damaged. Put in a new toner cartridge. See Replacing the toner cartridge on page 29.
The fuser unit may be contaminated. Call your Brother dealer.
The toner cartridge may be damaged. Put in a new toner cartridge. See Replacing the toner cartridge on page 29.
The drum unit may be damaged. Put in a new drum unit. See Replacing the drum unit on page 35.
Check if the Toner Setting in Replace Toner is set to Continue (Continue mode). See Toner settings in Chapter 1 of the Advanced User's Guide.
Make sure that a torn piece of paper is not stuck inside the machine blocking the scanner.
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 on page 7.
If you are using the manual feed slot, see Loading paper in the manual feed slot on page 9.
The paper tray may be too full. See Loading paper on page 7.
Check the paper type and quality. See Acceptable paper and other print media on page 15.
Check for loose objects such as torn paper inside the machine.
Verify that the two green envelope levers inside the back cover are set to the same position.
Verify that the two grey
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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