Brother MFC-9450CDN - Manual (Page 193)

Troubleshooting and routine maintenance
177
C
Note
When you put the drum unit in the
machine, match the green guides (1) of
the drum unit handle to the green
arrows (2) on both sides of the machine.
2
Push the drum unit in until it stops.
h
Close the front cover of the machine.
When you replace the drum unit with a new
one, you need to reset the drum unit counter
by completing the following steps:
i
Turn on the machine’s power switch.
2
1
2
1