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I'm very sorry but I've searched through the manual and can't see any mention of inbuilt Netflix capability.
Where are you seeing this please?
Yes, the Netflix website wants an activation code which you will get from your TV, but your TV needs to have that capability which I cannot see mentioned in the manual.
If the TV doesn't have Netflix capability then you can buy an external Netflix receiving device and I recommend the Roku streaming box which you can check out here
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