Brother MFC-9*970CDW Basic User's Manual page 104

g
Match the guide ends (2) of the drum
unit to the c marks (1) on both sides of
the machine, then gently slide the drum
unit into the machine until it stops at the
green lock lever.
1
2
h
Turn the green lock lever (1) clockwise
to the lock position.
96
1
i
Push the drum unit in until it stops.
j
Close the front cover of the machine.
k
Plug the machine's power cord back
into the electrical socket first, connect all
cables, and then plug in the telephone
line cord. Turn on the machine.