Brother HL-4040CN User Manual page 168

Examples of poor print quality
Colored spots at 75mm
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
75 mm
(2.95 in.)
75 mm
(2.95 in.)
Toner scatter or toner stain
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
The color of your printouts is not
what you expected
All one color
Recommendation
If the problem is not solved after printing a few pages, the drum unit may have
glue from a label stuck on the drum surface. Clean the drum unit. (See
Cleaning the drum unit on page 130.)
Check the printer's environment. Conditions such as high humidity and high
temperatures may cause this print quality problem. (See Positioning the
printer on page 5.)
Make sure that you use paper that meets our specifications. (See About
paper on page 6.)
Identify the color causing the problem and put in a new toner cartridge. (See
Replacing a toner cartridge on page 96.)
If the problem continues, put in a new drum unit. (See Replacing the drum
unit on page 103.)
Make sure that the toner cartridges are installed properly.
Make sure that the drum unit is installed properly.
Make sure that the belt unit is installed properly.
Make sure that the waste toner box is installed properly.
Perform the calibration. (See Calibration on page 87.)
Adjust the color by using the custom setting in the driver and by using the
control panel. Colors the printer can print and colors you see on a monitor are
different. The printer may not be able to reproduce the colors on your monitor.
(See Menu table on page 77.)
Make sure that you use paper that meets the printer's specifications. (See
About paper on page 6.)
Put in a new drum unit. (See Replacing the drum unit on page 103.)
Put in a new belt unit. (See Replacing the belt unit on page 109.)
Put in a waste toner box. (See Replacing the waste toner box on page 114.)
Put in a new drum unit. (See Replacing the drum unit on page 103.)
Troubleshooting
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