Block Diagrams; Power Block Diagram - LG DR1F9H Service Manual

BLOCK DIAGRAMS

1. POWER BLOCK DIAGRAM

BD101
NOISE FILTER
BLOCK
(C101,L102,
L101, C102)
!
FUSE
(F101)
!
!
Y-CAP
C110
BR BL
(BK)(WH)
!
R101
+
SNUBBER
BLOCK
C103
(D101,C105
C106,R104)
4
8 4 5
DRIVE & S/W BLOCK
SOFT-START BLOCK
(IC101, D102, R105,
1
C107, C108,C109,
R109, C104,C114,ZD101)
3 2
1
!
Y-CAP
C111
T101
RECTIFIER &
TRANS
SMOOTING BLOCK
7,8
6
(D127,C126,L123,
9
C127,R128,C132)
RECTIFIER &
SMOOTING BLOCK
10
(D125,D126,C125)
11
RECTIFIER &
SMOOTING BLOCK
12
(D124,C123,L122,
7
C124)
2
13
RECTIFIER &
14
SMOOTING BLOCK
(D121,D122,BC131,
R134,C135,C121,L121,
C122)
RECTIFIER &
SMOOTING BLOCK
15
(D128,C129,
R127,R129,ZD151)
PHOTO COUPLER
FEED-BACK
(IC102)
BLOCK
R121,R122,
C131,R123.
!
R124.R125
ERROR
R126)
AMP
(IC103)
3-20 3-21
TO Loader
(P1D01)
12V REG BLOCK
12V
(IC131,C133,R130)
5V
5V REG BLOCK
(IC132,C134,R131)
TO FAN
(P104)
FAN
TO I/O
(P101)
14VA
33VA
3.7VA
5.3VA
P.CTL