2
8
DV-420V-K
1
2
3
4
A
B
C
D
E
F
1
2
3
4
4.6 POWER BLOCK DIAGRAM
SW
ITCHI
N
G
TR
ANS
T5
0
1
POWER BLOCK DIA
G
RA
M
AC I
N
P.CON+
6V
AT+3.
3V
FL DC -
-28V
P.CON+
5V
P.C
O
N
+
1
2
V
P.ON-H
FL DC +
Q
510
P.
CO
N +12V SW
Q
504
FL+ P.
CO
N SW
Q5
0
2
-28V P.CON SW
VOLTAGE CTL
IC
5
0
1
KI
A431A-
AT
)
POW
ER CTL
IC
5
0
2
MI
P2K40MSSCF
5V REG
(DVD M
O
TO
R)
IC503
BD0
0
HC0
W
EF
J
-E2
REG+1.8V
IC4006
RP131H181D5-T
1
-F
+1.
8
V
HDM
I+5V REG
IC5902
NJ
M
2
882F05
V+5H
VBUS REG
IC4009
RP
131H501D-T
1
-F
V+5V_USB
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