Brother HL 4150CDN - Manual (Page 113)

Routine Maintenance
107
5
e
Unpack the new belt unit and put the new belt unit in the machine. Make sure the belt unit is level and
fits firmly into place.
f Make sure the green lock lever (1) is in the release position as shown in the illustration.
g Match the guide ends (2) of the drum unit to the c marks (1) on both sides of the machine, then gently
slide the drum unit into the machine until it stops at the green lock lever.
1
1
2