Brother HL-4150CDN User Manual page 182

Troubleshooting
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
2
h
Turn the green lock lever (1) clockwise to the lock position.
i
Push the drum unit in until it stops.
j
Close the front cover of the machine.
Note
If you turn off the machine during Jam Inside, the machine will print incomplete data from your computer.
Before you turn on the machine, delete the print spool job on your computer.
k
Plug the machine back in, and then turn on the power switch.
1
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