LG 55LM9600 Service Manual page 105

Standard Repair Process Detail Technical Manual
LCD TV
<XXLM9600>
ALEF LED
Copyright ⓒ 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Error
B. Power error _No power
symptom
Content Checking method when power is ON
Established
Revised
Check "power on" pin is high
24 Pin (Power Board ↔ Main Board) -
SMAW200-H24S (YEONHO)
1 Power on
20V (24V)
3
5 GND
7 GND
3.5V
9
11 3.5V
13 GND
15 GND
17 12V
19 12V
21 12V
23 N.C
(only Lamp SCANNING Model
: PWM Dim #2)
A19
2011. 12 .14
date
date
공통
2 20V (24V)
20V (24V)
4
6 GND
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
A19
LGE Internal Use Only