problems with kdc x659

I'm not too familiar with the X659, but I think the options on X679, the deck i have, are pretty much the same, try turning the deck off and going into the menu mode, scroll until you see CD read, and try swapping it to the other, which is either 1 or 2, this post coincides with what lspker is telling you to do, but jsut instructions on how to do it, what it does is changes the way the laser reads the fomats, I don't have my manual handy and haven't ran across using this option much as to tell you in depth info, but I know that it causes the symptoms you are describing above, and sounds to be the prob.