LG DSE6S Owner's Manual page 15

Function
1
2
3
1
2
3
1
2
3
The other button inputs
1
2
3
OPTICAL/HDMI ARC
LED1 and LED2 light up white.
HDMI IN
LED1 and LED3 light up white.
USB
LED2 lights up purple.
LED2 blinks red once when you press the button: Sound Effects
Information , Up/Down/Left/Right , Play/Pause
,
15