Brother MFC-9840CDW User Manual page 140

Examples of poor print
quality
Uneven density appears
periodically across the page
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Missing image at edge
Missing image at thin line
Wrinkle
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Insufficient gloss
124
Recommendation
Identify the color that is uneven and put in a new toner cartridge for
that color. (See Replacing a toner cartridge on page 169.)
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 174.)
Make sure that the fuser unit is installed properly.
Make sure that the toner cartridges are installed properly. (See
Replacing a toner cartridge on page 169.)
Make sure that the drum unit is installed properly. (See Replacing the
drum unit on page 174.)
One of the toner cartridges may be damaged. Identify the missing
color and put in a new toner cartridge for the color with the white line.
(See Replacing a toner cartridge on page 169.)
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 174.)
If you are using a Windows
and then click Printing Preferences. Choose the Advanced tab,
Device Options, Print Setting, and then check the
Improve pattern printing or Improve Thin Line boxes.
Change to the recommended type of paper. (See Recommended
paper on page 11.)
Check the paper type and quality. (See Acceptable paper and other
media on page 11.)
Make sure that the back cover is closed properly.
Make sure that paper is loaded properly.
Make sure that you choose the proper media type in the printer driver
or in the machine's Paper Type menu setting. (See Acceptable paper
and other media on page 11 and Basic tab in the Software User's
Guide on the CD-ROM.)
Turn over the stack of paper in the tray or rotate the paper 180° in the
input tray.
Make sure that the drum unit is installed properly. (See Replacing the
drum unit on page 174.)
Make sure that the fuser unit is installed properly.
Replace the fuser unit. Call Brother Customer Service.
Change to the recommended type of paper. (See Recommended
paper on page 11.)
®
printer driver, open Properties window,