Dell 3115cn Color Laser Printer - Manual (Page 482)

CAUTION: Never throw used print cartridges into a fire. The residual toner could explode
resulting in burns and injuries.
CAUTION: Since the used print cartridge may spill some toner, do not shake it.
Removing the Used Print Cartridge
Push the button (right side) and open the front cover. 1.
Grasp the handles at both ends of the print cartridge that you want to replace and pull it out. 2.