I assume, that you have no Beolabs connected to your BS9000. If this is the case, BS9000s behaviour is quite normal, and you are not doing anything wrong.
You can read in several threads here on Beoworld, that a BS9000 defaults to A.OPT 0 when no speakers are connected (Powerlink).
It already does when you activate it from stdby mode.
Solution: Connected Beolab speakers to BS9000 Powerlink sockets - or, connect a dummy plug to Powerlink socket.
A 5pin or 7 pin DIN plug should work. You only need a solder bridge between pin 4 and pin 2.
Hope this helps.
Stefan