LG 32LT340C INSTALLATION - Page 24

Speaker Output Setup, Method of Volume control port

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24 Speaker Output Setup * Depending upon model ••Connect the external speaker to the external speaker out jack on the TV. ENGLISH EXTERNAL SPEAKER OUT or STEREO 8 VOLUME CONTROL Control port for Speaker out + UP - DOWN GND RIGHT LEFT GND : Depending upon model NOTE ••External speaker must be used three plug(SE : Single Ended, Stereo) as shown in the drawings and external speaker fully inserted with external Speaker Jack. ••Otherwise it will cause defect. ••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 upon model ••Cable Spec. ••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. GND / Up / Down

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Speaker Output Setup
* Depending upon model
•
Connect the external speaker to the external speaker out jack on the TV.
EXTERNAL
SPEAKER OUT
VOLUME
CONTROL
+
-
STEREO 8
UP
DOWN
Control port for Speaker out
RIGHT
LEFT
GND
GND
: Depending upon model
or
NOTE
•
External speaker must be used three plug(SE : Single Ended, Stereo) as shown in the drawings and
external speaker fully inserted with external Speaker Jack.
•
Otherwise it will cause defect.
•
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 upon 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.
24
ENGLISH