Canon Laser Class 810 Basic Operation Manual page 277

5
Remove the new toner cartridge
from the protective material.
6
Gently rock the toner cartridge
5 or 6 times to distribute toner
evenly.
7
Remove the seals (2 places).
8
Bend back the blue plastic pull tab.
Do not remove the pull tab as t s used to
pull out the toner when the cartrdge needs
replaced.
9
Pull out the seal completely.
Do not pull out the seal at an angle.
10-15