32LD650 (CHASSIS:LT03B) - LG TV Service Manual (repair manual). Page 94

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Standard Repair Process Detail Technical Manual
Checking method when power is ON
B. Power error _No power
A19
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
A19
Check “power on” pin is high
Error-out
24
NC
23
LE : PWM Dim #1
IOP : NC
22
12V
21
LE : NC
IOP : PWM Dim #1
20
12V
19
Inverter ON
18
12V
17
NC
16
GND
15
GND
14
GND
13
3.5V
12
3.5V
11
3.5V
10
3.5V
9
GND
8
GND
7
GND
6
GND
5
24V
4
24V
3
24V 
(IOP & Edge 55”)
20V (
Edge 42/47
)
2
Power 
on
1
Pin layout (24P)
IOP 47”/Edge LED 55”
Edge LED 32/42/47”
2010. 2 .19
IOP 55”
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