External Speakers - LG 24LU340C-TB Owner's Manual

External Speakers

EXTERNAL
SPEAKER OUT
VOLUME
CONTROL
Control port for Speaker out
+
-
DOWN
GND
RIGHT
LEFT
GND
: Depending on model
(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.
UP
Each Up / Down pin
is pulled to 3.3 V with
CPU GPIO.
GND / UP / DOWN
CPU detects transition
from 3.3 V to GND level
for volume control.
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