Dell 3110cn Color Laser Printer - Manual (Page 305)

Remove the print cartridge from its packaging. 2.
NOTE: To protect the drum against bright light, do not remove the orange protective cover of the
print cartridge before the cartridge is inserted into its slot in the printer.
Completely remove the seal from the print cartridge by pulling the tab on the end of the print
cartridge. 3.
NOTE: Pull the seal out straight. Pulling the seal diagonally may tear it.
Grasp both handles of the print cartridge with the label facing up and slide the cartridge into the same
color slot. Make sure the cartridge is fully inserted. 4.