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Standard Repair Process Detail Technical Manual
symptom
LCD TV
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 16.
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.
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Only for training and service purposes
Error
D. Function error_ No response in remote controller,
key error
Remote controller operation checking method
Remote controller operation checking method
Established
date
Revised
date
date
②
②
2013. 11 .30
A27
P4000
1
GND
2
2
3.5V_WOL
3 5V WOL
3
BT_RESET
4
USB_DM
5
NC
6
USB_DP
7
WOL
8
GND
9
EYE_SDA
10
GND
11
EYE_SCL
12
KEY1
13
GND
14
KEY2
④
④
15
IR
③
16
3.5V_ST
17
LED_R
18
GND
LGE Internal Use Only
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