LG 65UG8709 - Remote Controller Operation Check

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 controller operation checking method
D. Function error
A22
Established
date
Revised
date
A22
②
③
<55UF8550-NB>
1
GND
2
+3.5V WOL
3
BT_RESET
4
USB_DM
5
NC
6
USB_DP
7
WOL
8
GND
9
SDA
10
GND
11
SCL
12
KEY1
13
GND
14
KEY2
15
IR
16
+3.5V_ST
17
LED_R
18
GND
Checking order to check remote controller
①
IR & LOGO light front
IR & LOGO light Rear
IR
Eye
Error symptom
Content
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