LG 55LN5100 Service Manual page 115

Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
For '10 models, there is no voltage out for st-by purpose.
When st-by, only 3.5V is normally on.
Edge LED
Copyright ⓒ 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Error
B. Power error _No power
Check power input voltage and ST-BY 5V
Established
Check the DC 24V, 12V, 3.5V.
(Power Board ↔ Main Board) -
24 Pin
SMAW200-H18S1 (YEONHO)
1 Power on
3 3.5V
5 3.5V
7 GND
9 24V
11 GND
13 12V
15 12V
17 GND
19 GND
21 GND
23 L/DIM0_MOSI
- 68/83 -
2012. 11 .30
date
Revised
date
공통
2 INV_ON
4 PDIM #1(PWM Dim #1)
6 PDIM #2(PWM Dim #2)
8 GND
10
12 GND
14
16
18 GND
20 GND
22 L/DIM0_VS
24 L/DIM0_SCLK
A18
24V
12V
12V
LGE Internal Use Only