LG 55LM9600 Service Manual page 91

Standard Repair Process Detail Technical Manual
LCD TV
ALEF LED
Copyright ⓒ 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Error
A. Video error_No video/ Audio
symptom
Content Power Board voltage measuring method
1
3
5
7
9
11
13
15
17
19
21
23
Established
date
Revised
date
Check the DC 24V, 12V, 3.5V.
24 Pin (Power Board ↔ Main Board) -
SMAW200-H24S (YEONHO)
Power on
20V (24V)
GND
GND
3.5V
3.5V
GND
GND
12V
12V
12V
N.C
(only Lamp SCANNING Model
: PWM Dim #2)
A4
2011. 12 .14
공통
2 20V (24V)
20V (24V)
4
GND
6
8 GND
3.5V
10
12 3.5V
GND
14
N.C
16
(Only LPB : V-sync)
Inverter On/off
18
20 N.C
(LPB, Lamp : A-dim)
PWM Dim #1
22
24 Error-out
A4
LGE Internal Use Only