I have a RS 15-1994. It CAN do Macro. It has 4 learning (smart) keys. I did the following:

1S Setup evrything for DVD (Macro)
4S Turn everything off (Macro)
Shift 1S Setup evrything for CD (Macro)
Shift 2S None (Macro)
Shift 3S Setup evrything for VCR (Macro)
Shift 4S Setup evrything for TV (Macro)
2S and 3S volume up/down for Receiver in TV mode (Learning key)
Also I setup MUTE to be a macro to mute both TV and Receiver.

Good luck
Zhe Zhang