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Standard Repair Process Detail Technical Manual
LCD TV
<ALL MODELS>
Checking order
1, 2. Check IR cable condition between IR & Main board.
3.
Check the st-by 3.3V on the terminal 6.
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 © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Error
D. Function error_ No response in remote controller,
symptom
key error
Content
Remote controller operation checking method
①
②
A27
Established
2010. 12 .14
date
Revised
date
P8200
1
2
3
4
5
③
6
7
8
LED_B/logo_PWM
④
9
10
11
3.3V_Normal
12
LED_R/BUZZ
13
14
15
A27
SCL
SDA
GND
KEY1
KEY2
St 3.5V
GND
IR
GND
GND
ST_SCL
ST_SDA
LGE Internal Use Only
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