I currently have an officejet 8500A after having two 6500A printers that I returned to the shop. After you install the printer it usually works...for a while. Then the problems start:
Scanning stops working and you get session cannot be established errors. Problem is there both on iMac's running OSX 10.6 and in Windows 7
Printing via Airprint suddenly stops working
Printing via USB out of Windows 7 stops working.
I have tried all sorts of remedies:
Connect all equipment via wired network instead of wireless
Reinstall the driver software
upgrade firmware of printer
have a fixed lease of the DHCP server for printers and computers
set a fixed IP in the printer
diagnosed bonjour routing using an app on the iPad
power cycle all devices in various orders
disable powersave on the printer using the front panel and via a mysterious hidden menu as advised by HP support.
Some of these resolutions help for a while but after a few days (sometimes a few hours) the problem starts again.
This all makes me believe that there is something seriously wrong with the driver software and firmware of these printers. When I read all these forums it seems that loads of people have similar vague problems. There is even a "top kudood" post but that is now locked for further posting by an HP employee?!? (wonder why...)
I know that HP staff is reading these forums. Would it not be a good idea to take some of these complaints serious and do something about them?
Although I am working on behalf of HP, I am speaking for myself and not for HP. Love Kudos! If you feel my post has helped you please click the White Kudos! Star just below my name : ) If you feel my answer has fixed your problem please click 'Mark As Solution' and make it easier for others to find help quickly : ) Happy Troubleshooting : )
1. Download and install Mac OS X 10.6.8 Update Combo :
2. Download and install HP Printer Drivers for Mac OS X v10.6 from Apple
This would be excellent advice, however I have been advised to do this like 10 times before. It helps for a short while but the problems resurface after some time again.
Logic would also dictate that if this was really the problem it would not be possible to resolve the situation by powercycling the printer. Furthermore, I have also problems using the printer from Windows 7 as I wrote. Reinstalling OSX drivers would not resolve that problem either.
My conclusion remains that there is something wrong with this device and in particular the firmware and/or the driver software.
Please appreciate that my " Happy Troubleshooting" is changed into " Very unhappy troubleshooting" .