LG 49UF6400 Service Manual page 93

Standard Repair Process Detail Technical Manual
symptom
Content
①
IR Ass'y
Eye
Checking order to check remote control
Checking order
1.Check IR cable condition between IR & Main board.( Check picture number① and ②)
2.Check the standby 3.5V on the terminal 12 pin (③)
3.AS checking the Pre-Amp(IR LED light) , the power is in ON condition, an Analog Tester
needle should move slowly, otherwise, it's defective.
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Only for training and service purposes
Error
D. Function error
Remote control operation checking method
IR
②
Established
date
Revised
date
A22
A22
1 GND
2 +3.3V
3 WiFi_RESET
4 WiFi_DM
5 GND
6 WiFi_DP
7 EYE_SDA
8 GND
9 EYE_SCL
③
10 KEY2
11 IR
12 3.3V_STBY
13 LED_R
14 GND
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