Brother MFC-8670DN User Manual page 126

Examples of poor print
quality
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
White lines across the page
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Lines across the page
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 or stripes down the page.
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
White lines down the page
F G H
A B C D E
h ij k
a b c d e fg
A B C D
a b c d e
0 1 2 3 4
Page skewed
112
Recommendation
Make sure that you use paper that meets our specifications. A rough surfaced
paper or thick print media can cause the problem. (See
and other media
on page 12.)
Make sure that you choose the proper media type in the printer driver or in the
'
machine s Paper Type menu setting. (See
media
on page 12 and Basic tab in the Software User
-
CD ROM.)
The problem may disappear by itself. Print multiple pages to clear this
problem, especially if the machine has not been used for a long time.
Clean the scanner window with a soft cloth. (See
scanner window
on page 128.)
The drum unit may be damaged. Put in a new drum unit. (See
drum unit (DR-520)
on page 135.)
Clean the primary corona wire in the drum unit. (See
wire
on page 130.)
Clean the scanner window with a soft cloth. (See
scanner window
on page 128.)
The drum unit may be damaged. Put in a new drum unit. (See
drum unit (DR-520)
on page 135.)
Clean the primary corona wire of the drum unit. (See
wire
on page 130.)
Make sure the primary corona wire
The drum unit may be damaged. Put in a new drum unit. (See
drum unit (DR-520)
on page 135.)
The toner cartridge may be damaged. Put in a new toner cartridge. (See
Replacing the toner cartridge (TN-550/TN-580)
The fuser unit may be smudged. Call Brother Customer Service at
- -
1 877 BROTHER (1-877-276-8437) (in USA) or
- -
1 877 BROTHER (in Canada).
Clean the laser scanner window with a soft cloth. (See
scanner window
on page 128.)
The toner cartridge may be damaged. Put in a new toner cartridge.
Replacing the toner cartridge (TN-550/TN-580)
(See
Make sure 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.
If you are using the MP tray, see
page 16.
The paper tray may be too full.
Check the paper type and quality. (See
media
on page 12.)
Acceptable paper
Acceptable paper and other
'
s Guide on the
Cleaning the laser
Cleaning the corona
Cleaning the laser
Cleaning the corona
'
s blue tab is at the home position (
on page 132.)
Cleaning the laser
on page 132.)
Loading envelopes and other media
Acceptable paper and other
Replacing the
Replacing the
a ).
Replacing the
on