Brother DCP-9020CDW Basic User's Manual page 120

Examples of poor print quality
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
94 mm ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
94 mm
Coloured spots at 94 mm
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
24 mm
24 mm
Coloured spots at 24 mm
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Toner scatter or toner stain
112
Recommendation

If the problem is not solved after printing a few blank pages,
foreign material, such as glue from a label, may be stuck on
the drum surface. Clean the drum unit (see Cleaning the
drum unit on page 76).

Identify the colour causing the problem and install a new
drum unit (see Replacing the drum units on page 55).
To identify the colour of the drum unit, visit us at
http://solutions.brother.com/ to view our FAQs and
troubleshooting tips.

Identify the colour causing the problem and put in a new
toner cartridge (see Replacing the toner cartridges
on page 48).
To identify the colour of the toner cartridge, visit us at
http://solutions.brother.com/ to view our FAQs and
troubleshooting tips.

Check the machine's environment. Conditions such as high
humidity and high temperatures may cause this print quality
problem.

Identify the colour causing the problem and put in a new
toner cartridge (see Replacing the toner cartridges
on page 48).
To identify the colour of the toner cartridge, visit us at
http://solutions.brother.com/ to view our FAQs and
troubleshooting tips.

Identify the colour causing the problem and install a new
drum unit (see Replacing the drum units on page 55).
To identify the colour of the drum unit, visit us at
http://solutions.brother.com/ to view our FAQs and
troubleshooting tips.