LG 65UH7650 - Page 72

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.
Standard Repair Process Detail Technical Manual
Remote control operation checking method
D. Function error
A22
Established
date
Revised
date
Error
symptom
Content
A22
②
③
Checking order to check remote control
①
IR & EYE Sensor
IR & LOGO light Rear
IR
Eye
Pin
Pin name
1
VCC
2
USB_DM
3
USB_DP
4
WOL_HOST_WAKE
5
GND
6
BT_RESET
7
GND
8
9
10
11
12
SDA
13
SCL
14
GND
15
IR
16
LED
17
GND
18
3.5V
19
KEY1
20
KEY2
21
GND
LED
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