Brother HL-B2180DW Online User's Manual page 166

Examples of poor print quality
White spots on black text and graphics at 94 mm intervals
Black spots at 94 mm intervals
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
Black lines down the page
Printed pages have toner stains down the page
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
White lines down the page
Recommendation
• If the problem is not solved after printing a few pages,
the drum unit may have foreign material, such as glue
from a label, stuck on the drum. Clean the drum unit.
See Related Information:Clean the Drum Unit.
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
• If you use label sheets for laser printers, the glue from
the sheets may sometimes stick to the drum surface.
Clean the drum unit.
See Related Information:Clean the Drum Unit.
• If you used paper that has clips or staples, the drum
unit may be damaged.
• If the unpacked drum unit is in direct sunlight (or room
light for long periods of time), the unit may be
damaged.
• Clean the drum unit.
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
• Clean the corona wire inside the drum unit by sliding
the green tab.
Make sure the green tab of the corona wire is in
the Home position (1).
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
• The fuser unit may be contaminated.
Contact Brother customer service.
• Make sure there is no foreign material, such as a torn
piece of paper, sticky notes or dust, inside the
machine and around the toner cartridge and drum
unit.
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
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