My friend has a PS2 connected to his new Denon 1602 via Fiber-optic. It will only play DPL 2 and not switch to Dolby Digital onscreen or the red light will not appear. The optical is turned on in the PS2 configuration menu. Any help will do. I have a Denon 2802 and the light always appears and switches over to DD or DTS when the movie starts.