LG 75SJ8570 Service Manual page 60

Standard Repair Process Detail Technical Manual
symptom
Content
① IR & EYE Sensor
IR & LOGO light Rear
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 16 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.
Error
D. Function error
Remote control operation checking method
③
Established
date
Revised
date
A22
A22
Pin Pin name
1 LED_R
2 GND
3 IR
4 +3.5V_ST
5 GND
6 GND
7 EYE_SCL
8 KEY2
9 EYE_SDA
10 KEY1
11
12 GND
13 GND
14 GND
15 Device
16 Wakeup Host
②
17 Power on
18 GND
19 +3.5_Wifi
20 Wifi DP
21 Combo Reset
22 Wifi DM
23 GND
24 +3.5_Wifi