Samsung UN55MU6500F e-Manual

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IP auto setting failed
1. 
Configure the settings in 
IP Settings
.
2. 
Make sure that the DHCP server is enabled on the router. Then, unplug the router and plug it back in.
3. 
Enter the correct password if required.
Unable to connect to the network
1. 
Check all 
IP Settings
.
2. 
Enter the correct password if required.
Connected to a local network, but not to the Internet
1. 
Make sure that the Internet LAN cable is connected to the router's external LAN port.
2. 
Check the DNS values in 
IP Settings
.
Network setup is complete, but unable to connect to the Internet
If the problem persists, contact your Internet Service Provider.
Connecting Video Devices
Make the correct video connections between your TV and your external devices.
Connecting with an HDMI cable
HDMI IN