LG 55EU96 Series, Owner'S Manual

Page: 18 / 40

ENGLISH
8
External Speakers
VOLUME CONTROL
+
-
STERE
O
(8
)
UP
DOWN
Control port for Speaker out
RIGHT
LEFT
GND
GND
• 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
•
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.