LG OLED88Z9PTA Service Manual page 69

Standard Repair Process Detail Technical Manual
symptom
Content
① IR & EYE Sensor
Eye 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
②
IR
Established
date
Revised
date
A13
Pin
1
2
3
③
4
5
6
7
8
9
10
11
12
13
14
COMBO_RESET_JA
15
16 BT_WAKEUP_HOST
WOL/WIFI_POWER_
17
18
19
20
WIFI_SUSPEND/RE
21
22
23
24
25
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A14
Pin name
LED_R
GND
IR
3.5V_ST
GND
GND
EYE_SCL
KEY2
EYE_SDA
KEY1
n.c
GND
3.5V_WIFI
GND
CK
ON
GND
3.5V_WIFI
WIFI_DP
SUME_JACK
WIFI_DM
GND
3.5V_WiIFI
GND