Samsung PN59D6500DFXZA - Manual (Page 192)

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English
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4. If you have entered the ID and password correctly, the Registered
Successfully message appears, asking you if you want to add another
service provider. If you do, press the ENTER E button. If not, press the
RETURN button and return to the Settings Menu.
5. If you pressed ENTER E , repeat Steps 2 through 4 to associate another
Service Provider.
6. When you are done, press the RETURN button.