Canon ImageClass MF 4270 Operation Manual page 156

3
Hold the grip (A) on the right front
side of the toner cover.
4
Open the toner cover.
5
Remove the toner cartridge.
6
Remove the new toner cartridge
from the protective bag.
Save the protective bag. You may need it
later when you remove the toner cartridge
from the machine.
10-15