Brother MFC-L8650CDW Basic User's Manual page 168

Examples of poor print quality
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Ghost
158
Recommendation
 Check the machine's environment. Conditions such as low
humidity and low temperatures may cause this print quality
problem
(see Product Safety Guide).
 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 32).
 Make sure the two grey levers inside the back cover are in the
up positions (1) by lifting them up until they stop.
 Put in a new drum unit (see Replacing the drum unit
on page 81).
1