LG 32LJ550B - Function Error: Remote Control & WiFi Check

Standard Repair Process Detail Technical Manual
Remote control operation checking method
D. Function error
A22
Established
date
Revised
date
Error
symptom
Content
A23/A24
②
③
Checking order
1.Check IR/Wifi cable condition between Wifi assy & Main board.
2.Check the 3.5V on the terminal
Checking order to check WiFi
① Wifi Assy Front
② Wifi Assy Rear
< 32LJ550B-UA> : WiFi AC only
P4001
1 +3.4V_WIFI
2 WIFI_DM
3 WIFI_DP
4 GND
5 WOL/WIFI_POWER_ON
6 +3.4V_WIFI
7 NC
8 GND
9 NC
10 NC
11 GND
12 GND
13 NC
14 NC
15 NC
16 I2C_SDA_EYE
17 I2C_SCL_EYE
18 GND
19 IR
20 LED_R
21 GND
22 +3.4V_ST
23 KEY2
24 KEY1
25 GND
Copyright © 2017 LG Electronics Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only