LG 65UT761H0CB, Manual

Page: 21 / 42

9
ENGLISH
External Speakers
VOLUME
CONTROL
+
-
STEREO
(8 )
EXTERNAL
SPEAKER OUT
UP
or
DOWN
Control port for Speaker out
RIGHT
LEFT
GND
GND
: Depending on model
•
Use only with the 3 Pole 3.5 mm Stereo Jack.
•
Do not connect your headphones or earphones to the port for
connecting an external speaker.
Method of volume control port
(Depending on model)
•
Cable Spec.
GND / UP / DOWN
Each Up / Down pin is pulled
to 3.3 V with CPU GPIO.
CPU detects transition
from 3.3 V to GND level for
volume control.