How can I fix my Epson R220 printer?

I am receiving a false paper jam indication. When I first turn on the printer, the green power light is on, with no other light flashing, and appears to be good to go. When I attempt to print, the paper travel down part way, stops, and the paper jam light flashes. I then eject the paper, and the light continues to flash. If I now shut off the printer and turn back on again, the green power light is on, indicating good to go again. And so it goes, on and on again. I am no longer able to print a page!!!
However, I am able to print a nozzle check, so the nozzles are ok. I love this printer, and hate to give up, but maybe it's time to call it a day and throw it away.
Can anyone offer assistance? It would sure be appreciated.
Thanks in advance