Follow these steps to connect and use a Bluetooth keyboard with your Smart TV:

1. Turn on the Smart TV and Bluetooth Keyboard.
2. From the Home screen, press the Menu button.
3. Select System Settings.
4. Go to the Network & Accessories section, and then select the Bluetooth Devices option.
5. Select Add New Device.
6. Select the Bluetooth Keyboard from the list of devices.
7. Enter any requested device codes on the keyboard.
8. Select Done when the connection is complete.