How can i fix my Cabasse CD Player in Renault Laguna?

Hi,

I have just bought an 03 Renault Laguna which has a Cabasse CD Player in it, i think its a 6 CD Multi Changer but not sure. When i switch source to CD the display just says 'Wait' and does nothing else. The CD player will not take in any CDs and none of the buttons (such as load/eject) work. Any Ideas?