I have an HP PSC 1510 Printer/scanner/copier . The printer wont print, scan or anything. The "check paper" light always blinks, there are no paper jams, there is paper loaded in the device, i tried the trouble shooting guide in the owners' manual, I re-installed the driver, all to no avail. I dont know what to do next, id like to get this thing working . Any suggestions are welcome ! Thnx !