HP Officejet j6480 will not print via USB.

[Marksan]

The printer will print a test page and scans okay, but will not print via USB.

[PrintDoc]

What version of OS X?  Is the printer plugged directly into your Mac, not through a USB hub?

[Marksan]

"What version of OS X?"

10.6.8.   Mac is a MacBookPro.

" Is the printer plugged directly into your Mac, not through a USB hub?"

I've tried both. Directly into my Mac now.

[PrintDoc]

Download and install this: support.apple.com/kb/DL907

Reset the printing system:

- Go to System Preferences > Print & Scan
- Right (or control) click in the rectangle listing your printers and select Reset Printing System.
WARNING - this will delete ALL of your printers!
- Select the plus sign to re-add a printer. Select the Defualt tab on the top of the window. Look for the printer, select it and wait until the "Add" button becomes available. Click it.

[Marksan]

Thanks for giving me something new to try. Sorry to say, it didn't work.  

"Waiting for USB printer to respond..."  Waiting. Waiting. Waiting.

[PrintDoc]

Let's reset the printer.  With it ON, unplug power from the back of the printer for 30 seconds.  Plug back in and turn on.

[Marksan]

Waiting for USB printer to respond...  Waiting Waiting.

(Didn't work--I've tried that before as per instructions on help page.)

[PrintDoc]

OK, turn the printer off.  Hold the # and 6 keys while and for a few seconds after, turning it back on.

[Marksan]

Thanks for persisting on this file.  I tried turning it off and then holding down the # and 6 while turning it back on and for a few seconds after.  

Still:

Waiting for USB printer to respond...

[PrintDoc]

Try the same reset but use the # and 9 keys.  This is a hard reboot of the printer.  If done properly, the printer front panel should indicate that it has been reset.