3CD in dash Changer Question.

[WaKeMaN]

I just got my 97 240SX SE, and it came stock with a 3Disc in dash changer. I was psyched and tried it but it proceeded to do absolutely nothing and give me the two error codes I listed. I'm putting in my Clarion DXZ715 this weekend so it's not too big a deal, but I'd like some tunes for the week. Any info would be appreciated.

P.S. I got the car without the owner's manual.