LG 48LX1Q Series Service Manual page 75

Standard Repair Process Detail Technical Manual
symptom
Content
① IR & EYE Sensor
IR
LED
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)
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
Eye
Established
date
Revised
date
②
A13
Pin Pin name
1 +3.5V_WIFI
2 WIFI_DM
3 WIFI_DP
4
5 WOL/WIFI_PWR_ON
6 +3.5V_WIFI
7 WIFI_SUSPEND/RESUME
8
9 COMBO_RESET
10 BT_WAKE_UP_HOST
11
12 +3.5V_WIFI
13 EYE_SDA
③
14 EYE_SCL
15
16
17
18
19
20
21 +3.5V_ST
22 +3.5V_ST
23 +3.5V_ST
24
25 WOV_PDMO_DATAIN
26 WOV_PDM_CLKOUT
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A13
GND
GND
GND
GND
GND
IR
LED_R
GND
GND
KEY2