Read LG 55LA7900 (CHASSIS:LA34D) Service Manual online
Checking order
1, 2. Check Motion cable condition between Motion assy & Main board.
3. Check the 3.3V on the terminal 1.
3. Check the 3.3V on the terminal 1.
Standard Repair Process Detail Technical Manual
Motion Remote operation checking method
Established
date
Revised
date
Error
symptom
Content
LCD TV
A28
P4100
1
3.5V_WOL
2
3.3V
3
WIFI_DM
4
M_RTS
5
WIFI_DP
6
RX
7
GND
8
TX
9
WOL
10
RESET
11
GND
12
CTS
①
②
③
2011. 12 .14
A28
D. Function error
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