Yamaha RX-773

If you’re talking about explicit CEC commands like Onkyo uses, Yamaha doesn’t provide those. HDMI CEC works in a more behind the scenes way with most receivers like Yamaha. You don’t get actual subset command lists for CEC like Onkyo.

Ok. Do you know for example what command sends wake up command within it and is it even possible to wake up Sony TV without another Bravia Sync device? And do i have right command list because of wrong recognize?

I get it work. After receiver Power on i selected Scene 02 aka TV.