Brother MFC MFC-7840W User Manual page 115

Examples of poor print
quality
F G H
A B C D E
h i j k
a b c d e f g
A B C D
a b c d e
0 1 2 3 4
Page skewed
Ghost
B DEFGH
abc efghijk
A C D
b c d e
1 3 4
Wrinkles or creases
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Poor fixing
Recommendation
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. (See Loading paper in the paper tray
on page 8.)
The paper tray may be too full.
If you are using the manual feed slot, see Loading paper in the
manual feed slot on page 10.
Check the paper type and quality. (See Acceptable paper and other
print media on page 14.)
Make sure that you use paper that meets our specifications. Rough-
surfaced paper or thick paper may cause the problem. (See
Acceptable paper and other print media on page 14.)
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 print media on page 14 and Basic tab in the Software
User's Guide on the CD-ROM.)
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 130.)
The fuser unit may be contaminated. Call Brother Customer Service.
Check the paper type and quality. (See Acceptable paper and other
print media on page 14.)
Make sure that paper is loaded properly. (See Loading paper in the
paper tray on page 8.)
Turn over the stack of paper in the tray or rotate the paper 180° in the
input tray.
Choose Improve Toner Fixing mode in the printer driver. (See
Device Options (For Windows
the software User's Guide on the CD-ROM.)
If you print only a few pages, change the printer driver setting in
Media Type to a thin setting.
Troubleshooting and routine maintenance
®
) or Print Settings (For Macintosh
®
) in
B
101