I'm looking for the codes to control the A-B speaker settings for a Pioneer VSX-D509S. Please provide or let me know where I might find these.

I've tried downloading the IR Code file from the Pioneer Electronics site but the link for the download is broken. I also don't know whether this particular file will include the speaker codes since it is not available in the remote that comes with the receiver. I'm hoping these codes are available for this or a compatible unit.

Thanks