Brother HL-5445D User Manual page 147

Troubleshooting
Examples of poor print quality
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Grey background
Ghost
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Toner specks
Recommendation
 Make sure that you use paper that meets our specifications.
uu Acceptable paper and other print media uu page 2
 Check the machine's environment. Conditions such as high temperatures
and high humidity can increase the amount of background shading.
uu Product Safety Guide: Choose a safe location for your product
 Put in a new toner cartridge.
uu Replacing the toner cartridge uu page 95
 Put in a new drum unit.
uu Replacing the drum unit uu page 103
 Make sure that you use paper that meets our specifications. Rough-surfaced
paper or thick paper may cause this problem.
uu Acceptable paper and other print media uu page 2
 Make sure that you choose the appropriate media type in the printer driver.
uu Acceptable paper and other print media uu page 2
 Choose Reduce Ghosting mode in the printer driver.
uu Other Print Options uu page 36 (For Windows
uu Print Settings uu page 59 (For Macintosh)
Put in a new drum unit.

uu Replacing the drum unit uu page 103
Put in a new toner cartridge.

uu Replacing the toner cartridge uu page 95
 The fuser unit may be contaminated. Call your Brother customer service for
support.
Make sure that you use paper that meets our specifications. Rough-surfaced

paper may cause the problem.
uu Acceptable paper and other print media uu page 2
 Clean the corona wire of the drum unit.
uu Cleaning the corona wire uu page 110
 The drum unit may be damaged. Put in a new drum unit.
uu Replacing the drum unit uu page 103
The fuser unit may be contaminated. Call your Brother customer service for

support.
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