Broken headphones?

Hey guys, completely new to the scene and trying to figure out something really basic. Is there a way to troublehsoot the headphone port on a DDJ T1?

So far it appears that all the buttons work, when I load up Traktor 3, set my audio device to the ddj t1 I can load tracks into the decks and the buttons will work, however the only way I can determine this is by connecting my headphones to the Master Out L or R port or setting my audio device to my computers speakers.

If my headphones are outputting music on Master Out L, but not when I plug it into either the regular or mini headphone port, does that mean the headphone port is busted?