Chrysler 6-disc dvd player question

I recently purchased a 6-disc dvd/cd player off of E-bay to replace the one my son broke in my wife's 2003 Voayger. I had no trouble loading and playing discs at first, but now it wont play or eject. All the player does is cycle through the discs, I can hear it doing it. Any tips on how to safely remove the discs?

Thanks,
Chuck