Block Diagrams; Smps Block Diagram - LG MBD-D102X Service Manual

BLOCK DIAGRAMS

1. SMPS BLOCK DIAGRAM

RECTIFIER RECTIFIER
SMOOTHING SMOOTHING
CIRCUIT CIRCUIT
ZNR & ZN R &
FI FILTER LTER
AC INPU AC NPUT
T
R
AMP AMP
A
Swi Switch ch
N
IC IC # 1
S
#1 #1
T
R
MAI MAIN
A
Switch ch Swi
N
IC IC # 2
S
#2 #2
3-51
AMP (+ (+) 2 AM ) 2 3V
FEED BACK FEED ACK
3. 3.5V (278R35 5V (278R35)
12V (78R12 12V (78R12)
5V(P-SEN 5V(P-SEN S) S)
5. 5.6V (KIA278R05 6V (KIA278R05)
-12V -12V
-31. 5V(VK -31. 5V(VKK)
FL1-FL2 FL1-FL2 (4. 5V) V) (4.
FEED BACK FEED ACK
3-52
PN902 PN902
PN901 PN901