LG 60LM6450 Service Manual page 77

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 3.3V on the terminal 6.
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.
Error
D. Function error_ No response in remote controller,
key error
Remote controller operation checking method
①
②
Established
2010. 12 .14
date
Revised
date
1
2
3
4
5
③
6
7
8
④
9
10
A27
P4102
SCL
SDA
GND
KEY1
KEY2
St 3.5V
GND
RED_LED
IR
GND