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Troubleshooting
125
B
Coloured lines across the page
If coloured lines appear at 30 mm intervals, identify the
colour causing the problem and replace the toner cartridge
that matches the colour of the line (see Replacing the toner
cartridges on page 54).
To identify the colour of the toner cartridge, visit
http://solutions.brother.com/
to view our FAQs and
troubleshooting tips.
If coloured lines appear at 94 mm intervals, put a new drum
unit (see Replacing the drum unit on page 59).
White spots or hollow print
Make sure the media type setting in the driver matches the
type of paper you are using (see Acceptable paper and other
print media on page 30).
Check the machine’s environment. Conditions such as high
humidity can cause hollow print
(see Product Safety Guide).
If the problem is not solved after printing a few pages,
foreign material, such as glue from a label, may be stuck on
the drum surface (see Cleaning the drum unit on page 87).
Put in a new drum unit (see Replacing the drum unit
on page 59).
Blank page or some colours are
missing
Identify the colour causing the problem and put in a new
toner cartridge (see Replacing the toner cartridges
on page 54).
To identify the colour of the toner cartridge, visit
http://solutions.brother.com/
to view our FAQs and
troubleshooting tips.
Put in a new drum unit (see Replacing the drum unit
on page 59).
Coloured spots at 94 mm
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 87).
Put in a new drum unit (see Replacing the drum unit
on page 59).
Examples of poor print quality Recommendation
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
94 mm
94 mm
133


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