The MX-500 has a learning mode that you can use. Press MAIN and ENT together for 3 seconds, then press the P-PRO button. Select the device then button you wish to program on your remote and then with both remotes facing each other (IR ports must be able to communicate) press the button on your other remote.
You can also download a copy of the book here...
http://www.universalremote.com/resources/pdfs/MX500manual.pdf
×