Printer only prints test pages

I have a Mac Book Pro on 10.9.5. I have been printing to the same HP 5550dtn for 6 months. Now it doesn't work. It will only print test pages. I have searched the forum and saw several people asking the same question with different printers, but no real solution. Here is what I have already tried:

• Rebooted the Mac
• Deleted and reinstalled the Printer
• Reset the printer

those were the solutions I have seen posted. Please help :-)