LG FB162I Service Manual page 56

3. SMPS BLOCK DIAGRAM
12
11
10
RECTIFIER
SMOOTHING
9
CIRCUIT
8
ZNR &
7
FILTER
6
5
AC INPUT
4
3
2
1
A B C D
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
T
R
AMP
A
Switch
N
IC #1
S
#1
T
R
MAIN
A
Switc h
N
IC #2
S
#2
E F G H I
6-5
AMP (+) 29V
FEED BACK
3.5V (278R35)
12V (78R12)
5V(P-SENS)
6.1V (KIA278R05)
-12V
-31.5V(VKK)
FL1-FL2 (4.5V)
FEED BACK
J K L M N
6-6
P9701
P9702
O P Q R S
LGE Internal Use Only
T