LG 60LN57 Series Service Manual page 94

Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
<ALL MODELS>
Checking order
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
Error
D. Function error_ No response in remote controller,
key error
Remote controller operation checking method
②
①
Established
date
Revised
date
54 / 88
2012. 12 .06
A27
P4101
1 GND
2 KEY1
3 KEY2
③
4 +3.5V_ST
5 GND
6 LOGO/LED_R
④
7 IR
8 GND
LGE Internal Use Only