LG OLED55B7P Service Manual page 56

Standard Repair Process Detail Technical Manual
symptom
Content
① IR & EYE Sensor
①
Checking order to check remote control
1. Check IR cable condition between IR & Main board.( Check picture number① and ②)
2. Check the standby 3.5V on the terminal 22 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
②
A13
Established
date
Revised
date
Pin
1
2 WIFI_DM_JACK
3 WIFI_DP_JACK
4
5 WOL/WIFI_POWER_ON
6
7 COMBO_RESET_JACK
8
9 BT_WAKEUP_DEVICE_JACK
10 BT_WAKEUP_HOST_JACK
11
12
13
14
15
16 EYE_SDA_JACK
17 EYE_SDA_JACK
18
19
20 LED_R_JACK
21
22
23 KEY2_JACK
③
24 KEY1_JACK
25
A13
Pin name
3.5V_WIFI
GND
3.5V_WIFI
GND
GND
GND
NC
NC
NC
GND
IR_JACK
GND
+3.5V_ST
GND