Standard Repair Process Detail Technical Manual
Remote control operation checking method
D. Function error
A15
Established
date
Revised
date
Error
symptom
Content
A15
1. Check IR cable condition between IR & Main board.
2. Check +3.5V_ST on pin 4(③)
3. AS checking the Pre-Amp of IR B/D(③) , the power is in ON condition, an Analog Tester
needle should move slowly, otherwise, it’s defective.
Pin Pin name
1 3.5V_WIFI
2 WIFI_DM
3 WIFI_DP
4 GND
5
WOL/WIFI_POWER
_ON_JACK
6 3.5V_WIFI
7
WIFI_SUSPEND/RE
SUME
8 GND
9 COMBO_RESET
10
BT_WAKEUP_HOS
T
11 GND
12 EYE_SDA
13 EYE_SCL
14 GND
15 IR
16 LED_R
17 GND
18 +3.5V_ST
19 KEY2
20 KEY1
③
②
① IR & EYE Sensor
Eye LED IR
Copyright © 2019 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
To Next Page
Loading...
