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Examples of poor print quality Recommendation
White Spots on black text and graphics at 3.7 in. (94 mm)
intervals
Black spots at 3.7 in. (94 mm) intervals
• 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.
Black toner marks across the page
• 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 toner cartridge may be damaged.
Replace the toner cartridge with a new toner cartridge.
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
Black lines down the page
Printed pages have toner stains down the page
• Clean the corona wire inside the drum unit by sliding
the green tab.
Make sure that the green tab on the drum unit is in the
Home position.
• The toner cartridge may be damaged.
Replace the toner cartridge with a new toner cartridge.
• 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.
In USA: 1-877-BROTHER (1-877-276-8437)
In Canada:
www.brother.ca/support
White lines down the page
• Make sure foreign material such as a torn piece of
paper, sticky notes or dust is not inside the machine
and around the toner cartridge and drum unit.
• The toner cartridge may be damaged.
Replace the toner cartridge with a new toner cartridge.
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
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