Checking order
1.Check IR cable condition between IR & Main board.( Check picture number
①
and
②
)
2.Check the standby 3.5V on the terminal 22 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.
Standard Repair Process Detail Technical Manual
Remote control operation checking method
D. Function error
A22
Established
date
Revised
date
Error
symptom
Content
A22
②
③
1
+3.5V
2
WIFI_DM
3
WIFI_DP
4
GND
5
WOL_ON
6
3.5V
7
COMBO_RESET
8
GND
9
COMBO_WAKEUP_DEVICE
10 COMBO_WAKEUP_HOST
11 GND
12 GND
13 NC
14 NC
15 NC
16 EYE_SDA
17 EYE_SCL
18 GND
19 IR
20 LED
21 GND
22 3.5V
23 KEY2
24 KEY1
25 GND
Checking order to check remote control
IR & LOGO light Rear
IR
Eye
LED
IR & LOGO light Front
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Summary of Contents for 43UJ750 -ZB Series
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