Sony rear projection tv model: KP-51WS510 convergence problem

Hello! I'm trying to adjust the settings on the converence mode because the colors are like kind of mixed up but as i'm trying to do the manual one (the one where you have to move the crosses so they all be white) the crosses don't move and the automatic  one (flash focus) doesn't work either. How can i fix this? Is there something wrong with the tv or is it just the settings?