Window shows "Printer Error".

Question

Window shows "Printer Error". Just changed an ink cartridge. Printer now makes scraping noise, then stops. All lights on console are on. Epson Stylus CX7000F Series all-in-one. Tried shutting unit off, then on again. Seems like it will start to work, then scraping noise and no movement afterward. Help!
s/n JQHV051854
Purchased 7/25/07