Brother MFC-9450CDN - Manual (Page 175)

Troubleshooting and routine maintenance
159
C
CAUTION
To avoid print quality problems, DO NOT
touch the shaded parts shown in the
illustrations.
o
Turn the drum unit over by holding the
green handles. Make sure that the drum
unit gears (1) are on the left hand side.
p
See the print sample to identify the color
causing the problem. The color of the
spots or toner stain is the color of the
drum you should clean. For example, if
the spots are cyan, you should clean the
drum for cyan. Put the print sample in
front of the drum, and the find the exact
position of the poor print.
1