LG OLED77Z19LA Service Manual page 64

Chassis eb14y / ed14y
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Standard Repair Process Detail Technical Manual
symptom
Content
① IR & EYE Sensor
Eye
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
LED
IR
Voice
Recognitioin
MIC
Established
date
Revised
date
A13
Pin
Pin name
1
LED_R_JACK
2
GND
3
IR_JACK
4
+3.5V_ST
5
GND
6
N.C.
7
EYE_SCL_JACK
8
KEY2_JACK
9
EYE_SDA_JACK
10
WOV_PDM0_DATAIN_JACK
11
KEY1_JACK
12
WOV_PDM_CLKOUT_JACK
13
+3.5V_WIFI
14
GND
15
COMBO_RESET_JACK
16
BT_WAKEUP_HOST_JACK
17
WOL/WIFI_POWER_ON_JACK
18
GND
19
+3.5V_WIFI
20
WIFI_DP_JACK
WIFI_SUSPEND/
21
RESUME_JACK
22
WIFI_DM_JACK
23
GND
24
+3.5V_WIFI
25
F20_PWM_IN[4]
26
GND
27
F20_PWM_OUT[2]
28
+13V_FAN
Copyright © 2021 LG Electronics. Inc. All rights reserved.
Only for training and service purposes.
A13

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