LG Electronics 47LN549E-ZA 8.4. Check Commercial features concerning Output.(IR Out/SPK Out/External Clock)

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Only for training and service purposes
● CASE 2. No Clock LED Model
If the auto volume of TV 2 is on and TV 1, 2 had a same TV
channels → USB cloning is success!!
8.4. Check Commercial features concerning
Output.(IR Out/SPK Out/External Clock)
8.4.1. External SPK Out and Volume control
(1) Connect external speaker to speaker out port with phone
jack on TV side as below.
(2) Check the Max. speaker output is 1W or not. Sine wave
with 1KHz will be displayed.
(3) Press Vol. control button up/down in turns and check the
waveform of Oscilloscope
8.4.2. IR Out
< Equipment & Condition >
▪ Simple Jig (commercial check JIG)
▪ Power only mode
(1) Connect each other RS232C port on the Commercial
Check JIG.
(2) Press any key on SVC Remote-control.
(3) Check the LED status of the Check JIG.
- IR LED(OK condition: blinking) (LED #1)
Button of Vol. control Waveform of Oscilloscope
UP(+)
DOWN(-)
Button of Vol. control Waveform of Oscilloscope
UP(+)
DOWN(-)
#1
Model Info Commercial Feature
Name IR Out External Speaker out External Clock
LP63xH-ZA O O O
LN549E-ZA O O X