clicks into place when correctly installed.
8.Install the toner cartridge assembly into the printer by aligning the blue arrows on the guides of the toner cartridge with the blue arrows in the printer and pushing the toner cartridge assembly as far as it will go.
9.Turn the printer back on.
10.Press and hold the Cancel button 
until Resetting PC Counter appears on the operator panel display.
NOTICE: Resetting the imaging drum's counter without replacing the imaging drum may damage your printer and void your warranty.
11. Close the front cover.
Replacing the Toner Cartridge
You can determine approximately how much toner is left in your cartridge by printing the printer settings configuration sheet. This helps you decide when you might need to order replacement supplies.
When the Toner low message appears, or when you experience faded print, remove the toner cartridge.
