Please can someone actually give a clear answer to resolving this problem. I have checked other recommended solutions all to no avail. The printhead stays in the middle of the printer and does not light the cartridges and every function seem to be disabled. The lights blinks four times intermittently between orange and green lights. The printer was bought in March 2011, so the issue of the end of life seem not applicable. What do i do? Get a new printhead, logic board assy or purge unit?