Brother MFC-9450CDN - Manual (Page 208)

192
h
Remove the waste toner box from the
machine using the green handle and
place it into the plastic bag included in
the carton.
i
Put the belt unit back in the machine.
Match the h mark on the belt unit to the
g
mark on the machine. Push down on
the green area of the belt unit to lock it in
place.
j
Insert the original orange packing
material for locking the belt unit as
shown in the illustration.
k
Put a piece of paper (letter or A4) on the
belt unit to prevent damage to the belt
unit.