Brother HL-3140CW User Manual page 189

Troubleshooting
Examples of poor print quality
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Poor fixing
Curled or wavy
Recommendation
 Make sure you lift up the two gray levers inside the back cover until they stop
in the up position (1).
 Make sure that the media type setting in the driver matches the type of paper
you are using (see Acceptable paper and other print media on page 2).
 Choose Improve Toner Fixing mode in the printer driver.
(For Windows, see Other Print Options on page 41.)
(For Macintosh, see Print Settings on page 67.)
If this selection does not provide enough improvement, change the printer
driver setting in Media Type to a thick setting. If you are printing an envelope,
choose Env. Thick in the media type setting.
Choose Reduce Paper Curl mode in the printer driver.

(For Windows, see Other Print Options on page 41.)
(For Macintosh, see Print Settings on page 67.)
If the problem is not solved, choose Plain Paper in the media type setting.
If you are printing an envelope, choose Env. Thin in the media type setting.
 If you do not use the machine often, the paper may have been in the paper
tray too long. Turn over the stack of paper in the paper tray. Also, fan the
paper stack and then rotate the paper 180° in the paper tray.
 Store the paper where it will not be exposed to high temperatures and high
humidity.
 Open the back cover (face-up output tray) to let the printed pages exit onto
the face-up output tray.
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