Samsung PN51D490A1DXZA - Manual (Page 47)

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English
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Other Features
O MENU m
→ Channel → ENTER E
■ Fine Tune
(analogue channels only)
If the reception is clear, you do not have to fine tune the channel, as this is done
automatically during the search and store operation. If the signal is weak or
distorted, fine tune the channel manually. Scroll to the left or right until the image is
clear.