What is Waste toner?
Some amount of toner still remains on drum even after image has been transferred to paper. This toner is not reused and sent to waste toner box instead. When waste toner container is full, E000019-0000 displays on the display panel to alert the user.
Where is Waste toner box?
Location of the container might be different for each model. In Canon IR 2200, it is located on left rear corner, just behind the cover. Dispose off the toner and clean the container thoroughly. Don’t forget to clean the neck area of the bottle. After reinserting the container, restart the machine and error E000019-0000 should have vanished.