Audio Systems: fuses, car fuse, fuse box

Question
I have a 99 Pontiac Sunfire. I have a Panasonic CD changer. The model number is CQ-R115SEUC. It is reading that the fuse is bad. Ive changed the fuses in the car fuse box but it reads the same. Someone told me there is a fuse in the back of the radio. How do i get to that fuse to change it. Thanks.  

Answer
"It is reading that the fuse is bad"
Please explain this.
What (exactly) is reading that a fuse is bad?
Maby I can help with that one if you define the problem a little more diligently.
As to removal:
You will need to remove the radio (or pay to have it removed) to get to the back of it in most cases. I do not do this type of walkthrough, as it is a fire hazard not to mention that ppl can easily break spendy interior parts with thier best intentions not to do so.

Jm