Programming remote for 622

[sard]

If this has already been addressed elsewhere, apologies. But I'm trying to program my 622 remote to control a Yamaha YSP 800 soundbar. I've used codes 663, 730, 731, 732, 733, 745 and 747 to no avail. And, yes, i did precede those codes with a "2."
Hep!

 

[KAB]

If this has already been addressed elsewhere, apologies. But I'm trying to program my 622 remote to control a Yamaha YSP 800 soundbar. I've used codes 663, 730, 731, 732, 733, 745 and 747 to no avail. And, yes, i did precede those codes with a "2."
Hep!

You could try scanning.