683. MaintenanceMonitoring the supplies life1ML-451x Series/ ML-501x Series1 Press (Menu) on the control panel.2 Press Admin Setup > OK > Maintenance > OK.3 Press Supplies Info. > OK.4 Press OK to select the option you want.2ML-5015 Series/ ML-5017 Series1 Press Setup from the Main screen.2 Press System > Next > Maintenance > SuppliesInformation.3 Press the option you want.4 Press the home icon ( ) to return to the Standby mode.