Brother HL 4150CDN - Manual (Page 122)

Routine Maintenance
116
5
Cleaning the inside of the machine
5
a Turn off the machine's power switch. Disconnect all interface cables, and then unplug the AC power
cord.
b Press the front cover release button and then open the front cover.
c Hold the green handle of the drum unit. Pull the drum unit out until it stops.
d Turn the green lock lever (1) at the left of the machine counterclockwise to the release position. Holding
the green handles of the drum unit, lift the front of the drum unit and remove it from the machine.
1