Brother MFC-9840CDW User Manual page 208

k
Insert the original orange packing
material for locking the belt unit as
shown in the illustration.
l
Put a piece of paper (letter or A4) on the
belt unit to prevent damage to the belt
unit.
196
m
Put the drum unit back in the machine as
follows.
1
Make sure that the grey lock
lever (1) is in the up position and
put the drum unit in the machine.
Push down the grey lock lever (1).
1
1