hey i have this panasonic head unit, i believe the number is something like 402u, but anyways when i put a cd in, it tries to read it for about 5 second and then spits it out. this happens 90% of hte time, the other 10% i can successfully play it. when i put it in and close the face, it triest ot spit it back out and then it comes up as ERROR 3 i think. any ideas how to fix this, im tired of putting the cds in and out 30 times to get it to recognize.