Open the cartridge door.
Firmly grasp the toner cartridge and pull it up and out of the printer.
Do not expose the toner cartridge to bright light or direct sunlight for long periods of time. This can damage the cartridge, which will result in print-quality defects. If the cartridge must be removed from the printer for an extended amount of time, cover it and keep it out of bright light or direct sunlight.
Unpack the replacement part from the packaging.
www8.hp.com/us/en/hp-information/environment/product-recycling.html
HP recommends responsible disposal of the defective part.
Install the toner cartridge.
Close the cartridge door.