Brother DCP-L8400CDN Basic User's Manual page 101

u
Make sure the blue lock lever (1) is in
the release position as shown in the
illustration.
1
v
Gently slide the drum unit into the
machine until it stops at the blue lock
lever.
1
2
Routine maintenance
w
Turn the blue lock lever (1) clockwise to
the lock position.
x
Push the drum unit in until it stops.
1
A
93