Just installed a HP Officejet pro 8500a printer. This is a replacement for the same brand. Cannot print on my network printer - can on a different one (I.E. one physical printer, 3 logical printers to choose from). I could print on my network printer (default) before replacing printer. Also, I can select one of the other printers and printing takes place. I think the IP address of the Network printer changed. So, all I think I need to do is: change the IP address of the Network printer. Guess???