just where the ink holder sits move it to the side manually and you should see a sponge holder thing i think it is for cleaning the ink, beside it is a gear usually abit dirty with ink, this is the gear that has come out of sync. So get a screw driver and try to move it, then press ok try this again and again, also move the ink spongie thing up or down too and keep fiddling with these to parts until it starts to work again. If and when working go to maintenance and go through and select all the options