LG 65UM6900PUA Service Manual page 65

Standard Repair Process Detail Technical Manual
symptom
Content
① IR & LED& 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 16 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
Eye
Established
date
Revised
date
②
A23
Pin Pin name
1
+3.5V_WIFI
2
WIFI_DM_JACK
3
WIFI_DP_JACK
4
5
WOL/WIFI_POWER_ON_JACK
6
+3.5V_WIFI
7
WIFI Suspend/Resume_Jack
8
9
COMBO_RESET_JACK
10
BT_WAKEUP_HOST_JACK
11
12
13
14
15
③
16
EYE_SDA_JACK
17
EYE_SCL_JACK
18
19
20
LED_R_JACK
21
22
+3.5V_ST
23
KEY2_JACK
24
KEY1_JACK
25
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A23
GND
GND
GND
NC
NC
NC
GND
IR_JACK
GND
GND