Steps

1. Press the HOME button, then select [Settings].

2. Select [Preferences] → [Front Panel Illumination] → [Illumination LED] → the desired option.
   

Available Options

[Demo]

The lamp blinks all the time the TV power is on.

[Auto Brightness Adjust]

Optimizes brightness according to the ambient light.

[Dark]

Lowers the brightness of the lamp.

[Simple Response]

Illumination lights in response to operations. It will not stay lit, even if you set the timer, timer rec* or reminder*.
* This function is available depending on your region/country.

[Off]

The lamp does not light under normal use.