20
VSX-1128-K
1
2
3
4
A
B
C
D
E
F
1
2
3
4
4.5 POWER SUPPLY BLOCK DIAGRAM
A
MAIN ASSY
P
SMPS ASSY
V+5V
IC100
(UF4007)
CN901W
CN901B
FL_AC2
FL_AC1
A-12V
12V
A+12V
SPK_RLY
B-
D+5.6V
F101
1N4007
D119
NC
AP01C-V1
D1
1
8
1500P/250V
C119
30S
C
6MT
D1
0
8
USB
DCDC
DCDC
DCDC
2
1
CX101
IC
108
P
C
123Y
22
F100
REG
REG
REG
MAIN TRANS
S2(DC1A, 15.6VX2)
REG
KIA7912PI
KIA7812PI
KIA7812PI
KIA7805
B+
IC9521
BD9328
IC9520
BD9328
BD9329
1
2
3
4
5
6
7
8
STR2A1
53
D
IC
109
S
O
URE
CE
/OC
P
Vc
c
GN
D
FB
/OL
P
D
D
D
D
S4(AC0.2A, AC2.55VX2)
S3(DC3.0A. DC12V)
S1(DC3.5A, 47VX2)
KIA2
4
3
1
A
P
IC
118
1
2
4
3
LF4ZBE273H
L102
5
4
8
9
6
3
1
2
7
10
11
12
W1
W2
W4
W3
W5
EER2828
T102