2
Routine Maintenance
6 Turn the knob of the toner cartridge in the direction of the arrow (clockwise) until it stops.
Lock
Unlock 
Black Toner Cartridge | Cyan, Magenta, or Yellow Toner Cartridge |
IMPORTANT
Before you turn the knob on the toner cartridge, make sure that the toner cartridge is pushed in as far as possible.
7 Close the toner supply port cover, and close the front cover of the main unit.
CAUTION
When closing the cover, be careful not to get your fingers caught, as this may result in personal injury.
IMPORTANT
Make sure to close the front cover securely. You will hear the click of the three magnets against the inside of the machine.