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Standard Repair Process Detail Technical Manual
symptom
Content
<ALL MODELS>
①
Checking order
1, 2. Check IR cable condition between IR & Main board.
3. Check the st-by 3.5V on the terminal 12.
4. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog
Tester needle moves slowly, and defective when it does not move at all.
Copyright © 2015 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Error
D. Function error_ No response in remote control
Normal Remote control operation checking method
②
Established
2015. 06. 23
date
Revised
2015. 06 .23
date
1
2
3
4
5
6
7
8
9
10
④
11
③
12
13
14
A27
P4000
GND
3.4V_WIFI
M_RESET
USB_DM
GND
USB_DP
SDA
KEY1
SCL
KEY2
IR
+3.5V_ST
LED_R
GND
LGE Internal Use Only
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