Brother HL-L8250CDN User Manual page 192

Troubleshooting
f
Gently slide the drum unit into the machine until it stops at the blue lock lever.
g
Turn the blue lock lever (1) clockwise to the lock position.
h
Push the drum unit in until it stops.
i
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
when it is turned back on. Before you turn on the machine, delete the print spooler job on your computer.
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