Brother MFC 9970CDW User Manual

Page 154

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146

Completely blank or some
colours are missing



Put in a new toner cartridge. (See Replacing a Toner cartridge
on page 66.)
To identify the colour of the toner cartridge, visit us at
http://solutions.brother.com/ to view our FAQs and troubleshooting
tips.



Put in a new drum unit. (See Replacing the drum unit on page 73.)

Coloured spots at 94 mm



If the problem is not solved after printing, the drum may have foreign
material, such as glue from a label, stuck on the drum surface. Clean
the drum unit. (See Cleaning the drum unit on page 102.)



Put in a new drum unit. (See Replacing the drum unit on page 73.)

Coloured spots at 30 mm



Identify the colour causing the problem and put in a new toner
cartridge. (See Replacing a Toner cartridge on page 66.)
To identify the colour of the toner cartridge, visit us at
http://solutions.brother.com/ to view our FAQs and troubleshooting
tips.

Toner scatter or toner stain



Check the machine's environment. Conditions such as high humidity
and high temperatures may cause this print quality problem. (See
Choosing a location in the Safety and Legal Booklet.)



If the problem continues, put in a new drum unit. (See Replacing the
drum unit on page 73.)

Examples of poor print
quality

Recommendation

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.

94 mm

30 mm

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