Audio Systems: 6 disk cd changer, factory radio, car audio store

Question
I have a 2006 6 disk CD changer, we replaced the battery back in Sept.  It worked fine until yesterday it reads  "cd ERROR" it wont play or eject cd;s

Answer
unplug the battery  for 5 minutes and try it again if that don't reset the radio to shiping mode, it needs to be repair or replace
any car audio store can repair that unit
or you can get a rebuild unit from  here

http://www.oemautosound.com/c-173-oem-factory-radio.aspx