Brother HL-3170CDW Owner's Manual
Routine Maintenance
151
4
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Put the toner cartridge back into the drum unit until you hear it lock into place. If you install the cartridge
in correctly, the green lock lever on the drum unit will lift automatically.
in correctly, the green lock lever on the drum unit will lift automatically.
NOTE
Make sure that you put in the toner cartridge correctly or it may separate from the drum unit.