Marantz NA6006

rayyzfr1

Novice Member
Hi all. I have a new Sony TV which I'm trying to connect to my marantz NA6006 streamer and marantz Ruby amp. I've connected an optical cable from the TV to the 6006 but when I try to play the 6006 gives a optical unlock message. I have turned the TV sound off and onto external speaker settings but no sound.
After reading the manual I cannot find any information on optical unlock.
Any ideas why please
 

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