By default, LDView has a light pointing directly at the model from the eye point. It also doesn't support shadows at all. POV-Ray requires lights, and obviously the default lights generated by LDView aren't working well here. You'll have to move at least one of them to be in a more reasonable location in order. I would expect the viewpoint to be 0 latitude and 0 longitude to see the front of the face. If that is the case, then if you update one of the lights to be in the following location, it should illuminate the front of the face:
<0*LDXRadius,-1*LDXRadius,-5*LDXRadius> + LDXCenter
<0*LDXRadius,-1*LDXRadius,-5*LDXRadius> + LDXCenter