Brother DCP-8070D User Manual page 71

Examples of poor print
quality
All black
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Black toner marks across the
page
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Line 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 down the page
64
Recommendation
Clean the corona wire inside the drum unit by sliding the blue tab. Be
sure to return the blue tab to the home position (a). (See Cleaning the
corona wire on page 81.)
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 88.)
The fuser unit may be contaminated. Call your Brother dealer for
service.
Make sure that you use paper that meets our specifications. (See
Acceptable paper and other print media on page 13.)
If you use label sheets for laser machines, the glue from the sheets
may sometimes stick to the OPC drum surface. Clean the drum unit.
(See Cleaning the drum unit on page 82.)
Do not use paper that has clips or staples because they will scratch
the surface of the drum.
If the unpacked drum unit is in direct sunlight or room light, the unit
may be damaged.
The toner cartridge may be damaged. Put in a new toner cartridge.
(See Replacing a toner cartridge on page 85.)
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 88.)
Clean the laser scanner window and the corona wire inside the drum
unit. (See Cleaning the laser scanner window on page 79 and
Cleaning the corona wire on page 81.)
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 88.)
Clean the corona wire inside the drum unit by sliding the blue tab. Be
sure to return the blue tab to the home position (a). (See Cleaning the
corona wire on page 81.)
The toner cartridge may be damaged. Put in a new toner cartridge.
(See Replacing a toner cartridge on page 85.)
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 88.)
The fuser unit may be smudged. Call your Brother dealer for service.