Brother MFC-9420CN Service Manual page 190

Sequence of Assembling
(1) Put in the new transfer roller ASSY PU by holding the lock levers of the transfer roller
ASSY PU and adjusting the angle of the transfer roller lever shafts (both sides) to match the
transfer unit grooves. Put the transfer roller ASSY PU onto the shafts and place the roller
onto the springs as shown below:
(2) Push the lock levers down to lock the transfer roller ASSY PU into place.
(3) Close the back cover.
(4) Turn the machine's power switch back on.
Lock levers
Transfer roller shaft
Spring
Fig. 6-17
6 -1 4
Transfer roller ASSY PU
Confidential