Brother HL-L6250DW Online User's Manual page 266

Examples of poor print quality
Toner specks
Hollow print
White lines across the page
Lines across the page
White lines, bands or ribbing across the page
All black
Recommendation
• Make sure the media type setting in the driver
matches the type of paper you are using.
• 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.
• 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
• Select Thick Paper mode in the printer driver or use
thinner paper than you are currently using.
• Select the appropriate media type in the menu setting.
• Check the machine's environment. Conditions such as
high humidity can cause hollow print.
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
• Clean the corona wire inside the drum unit.
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
• Select the appropriate media type in the printer driver.
• Select the appropriate media type in the menu setting.
• The problem may disappear by itself. Print multiple
blank pages to clear this problem, especially if the
machine has not been used for a long time.
• Clean the drum unit.
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
• Clean the drum unit.
• The drum unit may be damaged.
Replace the drum unit with a new drum unit.
• Check the machine's environment. Conditions such as
high humidity and high temperatures may cause this
print quality problem.
• Clean the drum unit.
• If the problem is not solved after printing a few pages,
replace the drum unit with a new drum unit.
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