LG 49SM5C-BF Service Manual page 42

Standard Repair Process Detail Technical Manual
symptom
Monitor Signage
Content
Error
B. Power error _No power
Checking method when power is ON
1
3
5
7
9
11
Established
date
Revised
date
Check "power on(Pin 1)" pin is high
12 Pin (Power Board ↔ Main Board)
SMAW200-H12S5K(BK)
PWR-On 2
GND 4
D 13.2 V 6
A 13.2 V 8
GND 10
DRV-On
12
(Inverter –On)
A11
(32/43) N.C
(49/55/65) PWM#2
D 13.2 V
D 13.2 V
A 13.2 V
GND
PWM#1
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A11