Samsung UE40D7000LU E-Manual page 155

● Signal Information: (digital channels only) HDTV channel's reception quality is
either perfect or the channels are unavailable. Adjust your antenna to increase
signal strength.
● Troubleshooting: If the TV seems to have a problem, refer to this description.
If none of these troubleshooting tips apply, contact the Samsung customer
N
service centre.
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