I read http://pdfstream.manualsonline.com/a/a6bef9e0-ba98-cf34-b1f3-ba6b02fe9376.pdf and found no codes for the remote or any HDMI CeC support.
Unless Samsung has such in their docs (I didn't find any) it looks like an older receiver that you use it's remote along with your TV.
-> Ask Logitech if their HARMONY system can control this receiver.
I just installed a new Samsung QLED TV (QN65Q70RAFXZA). I'm using the optical audio output which connects to a Kenwood VRS-6100 audio subsystem. How do I configure the remote control that comes with the unit to control the audio volume of the Kenwood audio system.