A940prints blank pages

     I have been having issues w/ my A940 for a couple of weeks now, but the latest problem is that when i tell it to print, whether it's from the computer or just copying something w/ the scanner, it goes throught the motions of printing and spits out a blank page. I spoke to a tech. support person on the phone today, and she told me she would call me back in 15-20min. when my software was finished reinstalling, but it's been several hours now and i'm guessing she's not going to call me back. I've tried all the suggestions from the Dell Printer Solution Center program, and it still "prints" blank pages. The computer icon says "Ready", this printer is my default printer, I don't have too many files open, the packing tape is off the cartridges (these cartridges have printed fine before, they only stopped working altogether today), etc.

     When I called Dell tech support today, it was because my printer was not communicating w/ my computer and i was getting a cartridge error message. The tech support woman had me uninstall and reinstall the Dell printer software and now the communication problem has been solved, but the blank printing problem was born. Help!!!