LG 84LM9600 Service Manual page 101

Standard Repair Process Detail Technical Manual
LCD TV
Edge LED
Edge LED
Copyright © 2012 LG Electronics. Inc. All rights 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) - Common
SMAW200-H24S (YEONHO)
1 Power on
3 24V
5 GND
7 GND
9 3.5V
11 3.5V
13 GND
15 GND
17 12V
19 12V
21 12V
23 GND/P_DIM2
• Lamp SCANNING Model
: PWM Dim #2
2010. 12 .14
date
date
2 24V
4 24V
6 GND
8 GND
10 3.5V
12 3.5V
14 GND
16 GND
18 Inverter On/off
20 Lamp : A-Dim
LED : N.C
22 PWM Dim #1
24 Error-out
A19
LGE Internal Use Only