Replacing the Toner cartridge HP LaserJet P3015dn Printer
When the HP LaserJet P3015dn print cartridge reaches the end of its estimated useful life, the HP LaserJet P3015dn control panel displays a BLACK CARTRIDGE VERY LOW message. You do not need to replace the supply at this time unless print quality is no longer acceptable. When the supply has reached this condition, the HP premium protection warranty for that supply has ended.
The cartridge-life remaining is an approximation only, and it varies depending on the types of documents you print and other factors.
You can configure the product to stop when the BLACK CARTRIDGE VERY LOW message displays.
The print cartridge might still be able to produce acceptable print quality. To continue printing, either replace the supply or use the MANAGE SUPPLIES menu to reconfigure the product to continue printing.
7. Close the top cover. After a short time, the control panel should display Ready.