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LG 55UN6950 Service Manual page 60

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Standard Repair Process Detail Technical Manual
symptom
Content
<ALL MODELS>
IR & EYE Sensor
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 6 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
Established
date
Revised
date
A22
Pin
Pin name
1
2
USB_DM
3
USB_DP
4
5
WOL/WIFI_ON
6
7
WIFI_Suspend/Resume
8
9
Combo_Reset
10
BT_WAKEUP_HOST
11
12
13
14
15
16
EYE_SDA
17
EYE_SCL
18
19
20
21
22
23
24
25
Copyright © 2021 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
A22
VCC
GND
VCC
GND
GND
VCC
GND
IR
LED_R
GND
VCC
KEY2
KEY1
GND

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