I have really tried to get these on my own. I have found the correct EFC codes for volume (+, -, MUTE) as well as power. Have download the IR_RX-V667-3067 spreadsheet and verified the methodology of how to get those codes as well.

However, when I try the same methodology for SCENE 1 and SCENE 2, I get nowhere. I'm at the point where I'm about to just try and key in all the EFCs and go from there but thought I'd post first.

I have the Comcast DVR 3 remote that I'm trying to do this for.

Thanks

Bad news-- The Comcast remote is not capable of sending the Scene signals. Here's the explanation: Notice in the PDF file that many Yamaha codes are shown as something like 7A-1C (Main Mute). That's shorthand for 7A85-1CE3, because standard NEC1 coding uses 4 bytes of information with the 2nd and 4th bytes being the binary complement of the 1st and 3rd bytes. (The two bytes add up to 255 or 0xFF.) Actually for sometime now companies have been making the 2nd byte independently variable, and we usually refer to that as a device.subdevice pair. You can see that in the Dock commands for example, where straight NEC1 would have 7F80, but the actual code 7F01 (127.1). The Comcast remote knows about many such device.subdevice setups.

Very recently, Yamaha has started to vary the 4th byte, and the Scene codes use what we terms as NEC1-y1. For these codes the 3rd and 4th bytes add to 127 decimal or 7F hexadecimal. The Comcast remote has no setup codes that send such an IR signal, and so there is no way to use EFCs to get the desired signal.

A learning remote can learn the signals which are present of the OEM remote. Or it is easy to buy a JP1 interface cable to add the NEC1-y1 executor to the Comcast remote.

Thanks for the reply. I now know why I switched majors from EE to ME :) I've seen a lot of information on the JP1 interface and programming. What is the complexity of learning how to utilize JP1 programming?

For something like this, it's very simple. Use RemoteMaster, download the existing Yamaha upgrade (for a RX-V671-- a super set of your Yamaha), and change the remote type to Comcast. The existing upgrade has more functions listed than you can easily fit to the buttons available on the Comcast, so you'd have to decide which functions to assign to buttons.

If you have a JP1 cable, then you'll probably find yourself incorporating macros for some tasks, and that is also very easy.

If you decide that you want to do things like use long and short button presses, then the programming can get more complicated.