LG 42LB650T Service Manual

Standard Repair Process Detail Technical Manual
Remote controller operation checking method
D. Function error_ No response in remote controller,
key error
A27
Established
date
Revised
date
Error
symptom
Content
LCD TV
2013. 11 .30
Remote
controller
operation
checking
method
<ALL MODELS>
date
P4000
1
GND
2
35V WOL
2
3
.
5V
_
WOL
3
BT_RESET
4
USB_DM
5
NC
6
USB_DP
7WOL
8GND
9EYE_SDA
10 GND
11 EYE_SCL
12 KEY1
13 GND
14 KEY2
①
②
④
15 IR
16 3.5V_ST
17 LED_R
18 GND
②
③
④
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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LG 42LB650T Specifications

General

Brand	LG
Model	42LB650T
Category	LED TV
Language	English