Function Error_ No Response In Remote Controller, Key Error - LG 55LB5610 Service Manual

Standard Repair Process Detail Technical Manual
Error
symptom
LCD TV
<ALL MODELS>
< Sub Ass'y>
①
Checking order
1, 2. Check IR cable condition between IR & Main board.
3. Check the st-by 3.3V 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 controller,
key error
Content
Remote controller operation checking method
②
Established
date
Revised
date
< Main Ass'y>
2012. 01 .14
P4600
1 GND
2 KEY1
3 KEY2
③
4 3.5V_ST
5 GND
6 LED_R
④
7 IR
8 GND
9 SCL
10 SDA
A17
LGE Internal Use Only