Remote Controller Operation Checking Method - LG 42LM660S Service Manual

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.
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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

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
LGE Internal Use Only