My DVD/CD door doesn't open

I have a Klipsch CS-700 and the DVD/cd door won't open. There is a DVD in it. I have tried opening it with the the remote control and on the console. I have looked for a small manual override button hole, like on some computer cd-rom drives, but I can't find one. Any thoughts?
 
There is a hole in front of the DVD drive. insert a pin and push.

Here is a sample image
liteon-dual-dvd-drive.jpg
 
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