Samsung PN51F4500AF User Manual page 122

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Signal
the-air HD channels is either perfect or the channels are unavailable. Signal
Information displays HD channel signal strength so you can adjust your
antenna to increase signal strength and receive HD channels.
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Reset: Reset all settings to the factory defaults except network settings.
N
The PIN input screen appears before the setup screen.
N
Enter your 4-digit PIN or the default PIN (0000) if you have not set your
own PIN. You can change the PIN using the Change
→ System → Change
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Information: (digital channels only) The reception quality of over-
PIN → ENTERE)
English
PIN option. (MENU
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