If you have a multi format TV set your 2910 to MULTI(in VIDEO SETUP ->TV TYPE).
If you have a NTSC only TV then set your 2910 to NTSC(in VIDEO SETUP ->TV TYPE)
These settings in your 2910 refer to the Type of display you have. If its PAL set it to PAL(all NTSC signals will be converted to PAL), if its NTSC set it to NTSC(all PAL signals will be converted to NTSC), If its multi format set it to MULTI(in this case the player will send the signal out in its native format without conversion)
BTW if you're playing SACD, if you haven't done this already, go to OTHER OPTIONS -->PLAYER MODE and set to AUDIO(this will set the player to play the Hi-Res tracks on SACD and DVD-AUDIO by default, with some disc's if this is not set you can't play the High-Res tracks)
cheers