LG 55QNED81SRA Service Manual page 64

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Standard Repair Process Detail Technical Manual
symptom
Content
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. (③)
Error
D. Function error
Remote control operation checking method
Pin #25
Pin #1
Established
date
Revised
date
A14
Pin
Pin name
1
+3.5V_WIFI
2
WIFI_DM
3
WIFI_DP
4
GND
5
WOL/WIFI_POWER_ON
6
+3.5V_WIFI
7
WIFI_SUSPEND/RESUME
8
GND
9
COMBO_RESET
10
BT_WAKEUP_HOST
11
GND
12
+3.5V_WIFI
13
14
15
16
EYE_SDA
17
EYE_SCL
18
GND
19
20
LED_R
21
GND
22
+3.5V_ST
23
KEY2
24
MIC_DATA
25
MIC_CLK
Copyright © 2023 LG Electronics. Inc. All rights reserved.
Only for training and service purposes.
A14
N.C
N.C
N.C
IR

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