Read LG 47LX9500-TA (CHASSIS:LB03R) Service Manual online
Standard Repair Process Detail Technical Manual
Power Board voltage measuring method
A. Video error_No video/ Audio
A5
Established
date
Revised
date
Error
symptom
Content
LCD TV
A4
Check the DC 20V/24V, 12V, 3.5V.
Pin layout (24P)
1
Power
on
2
24V
(IOP & Edge 55”)
20V (
Edge 42/47
)
3
24V
4
24V
5
GND
6
GND
7
GND
8
GND
9
3.5V
10
3.5V
11
3.5V
12
3.5V
13
GND
14
GND
15
GND
16
NC
17
12V
18
Inverter ON
19
12V
20
LE : NC
IOP : PWM Dim #1
21
12V
22
LE : PWM Dim #1
IOP : NC
23
NC
24
Error-out
IOP 47”/Edge LED 55”
Edge LED 42/47”
IOP 55”
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