Audio Systems: car cd, cd magazine, 3de

Question
my alpine 3de-7886 is acting wierd. cartridge will not eject. it backs out as though changing discs goes back in and displays "error".
any suggestions?  

Answer
check the cd magazine the platic trays sometimes a little piece of the arm falls off inside the cd changer
and you will need to find it remove it and buy a new cd magazine
there is also a reset litle hold use a pen and reset the radio
don't pull the magazine it will damage the radio