The Mac now indicates 'The printer is not connected,' and in the print queue, my printing job shows up 'Printing - looking for printer.' When I open System Preferences, Printers & Scanners, the printer shows up but cannot read the ink levels and the utility cannot connect to the printer. But it has stopped working with my desktop Mac since installing OS 10.10 Yosemite yesterday.Īfter installing Yosemite I also installed the HP Printer Drivers v3.0 offered in the App Store. My 7520 continues to work wirelessly on my home network to print from a Windows 7 laptop and via AirPrint from an iPhone running iOS 8.