Gonk: I am not talking about the auto detaction of the surround mode when playing a DVD movie.

I am referring to the "To select a default surround mode" at page 25 of the manual. The procedure just above LIP Sync Delay on same page. From that configuration screen, I could press < or > to scroll through all the surround modes in listed sequency at DVD, Video 2 configuation, but not the Video 1. I use the DVD player with COMPONENT out for casual (Junk movie) viewing. I use DVI direct from other DVD player for serious viewing.
Just don't know why I just cannot scroll the surround modes at video 1 only. The default mode is stucked at PLIIX MOVIE.