LG 43LH54 Series Service Manual page 58

Standard Repair Process Detail Technical Manual
Error Symptom
Content
① < Sub Ass'y>
1, 2. Check IR cable condition between IR & Main board
3. Check the ST-BY 3.5V on the terminal 4
4. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog
Tester needle moves slowly, and defective when it does not move at all.
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Only for training and service purposes
D. Function Error, No Response in remote control, Key error
remote control operation checking method
②
< Main Ass'y>
Established date
Revised date
P4600
1 KEY2
③
2 3.5V_ST
3 GND
4 LED_R/BUZZ
④
5 IR
6 GND
LGE Internal Use Only
A16