The online manual is about as useful as using a fluffy kitten as a guard dog. But I get the impression that your model of TV might not have Bluetooth so a wireless keyboardight not be an option anyway.
You can always try plugging your Apple keyboard into one of the USB ports on the telly. However don't be surprised if it doesn't work 100% properly. It all depends on whether the TV can recognise it as an Apple keyboard or just some generic device.
Chances are the letter and number keys will be OK but some of the other keys might not produce the symbol printed on the keycap.