DV-SP300
SCHEMATIC DIAGRAM
POWER SUPPLY UNIT
A
1
2
3
4
B
C
D
E
D17
1N4007
R33
220
+
C21
100uF
16V
D16
1N4148
R32
120
1/8W
Q6
KTA1241Y
R31
4.7K
1/8W
R30
390
R27
1.5K
R28
150
R29
820
(F)
R26
2.2K
PC1
LTV817
R24
18K(F)
R25
10
C20
1uF/50V
U3
431
R23
120
+
L3
7uH
C19
470uF
10V
+
C18
1000uF
10V
13
11, 12
13
10
D15
SR204
C22
102P
250V
C16
C17
470uF x 2
10V
D12
SF24
L2
15uH
R18
100
1W
Q4
KTA1241Y
R19
4.7K
1/6W
D14
1N4148
R20
120
1/8W
D13
1N5819
Q5
KSP2222A
KTN2222A
R22
1.2K
R21
10K
CN4
1
2
3
4
5
6
7
8
9
10
11
12
+9VA
AGND
-8VA
+12VA
+5.5VS
+3.5V
DGND
+2.5V
+5V
+12VM
MGND
+9VM
2.5mm
CN3
2mm
GND
FL5V+
-27V
FL5V-
5.5VS
P/C
1
2
3
4
5
6
U2
KA7809
R17
3.3
1/2W
VI
GND
VO
C15
100uF
16V
R16
1.0K
1/8W
D11
1N4148
R15
10K
R14
560
1W
Q3
KTA1241Y
C14
100uF
25V
+
+
C13
220uF
25V
L1
15uH
D10
SF24
R13
C12
10
1/2W
102K
1KV
15
10
9
14
14
11, 12
R10
1.2
D9
1N4937
R8
20
D8
1N4937
ZD2
3.3V
R7
120
C10
47uF
50V
R9
12K
C11
100uF
16V
+
+
+
C9
100uF
16V
R6
1K
R11
1K
Q1
KSC2383Y
R34
2.2K
1/8W
Q2
A1266Y
R12
3.3K
1/8W
D7
HER105
R5
3.9
T1
EER2829
1/8W
C6
222P
1KV
R2
56K
1W
D5
HER107
R1
150K
2W
D6
1N4937
1
2
C8
47uF
50V
R4
68K
4
3
PC1
LTV817
R3
1K
C7
473
50V
ZD1
9.1V
U1
2 Drain
KA1M0380RB-YDTU
Vcc
GND 1
FB 4
3
LF1
C2
104P
C3
152P
-
+
D1 to D4
1N4007 x 4
C5
100uF
200V
+
CN1
CN2
F1
AC125VT2A
VR1
10D221
TH1
10D7
C1
104P
+
+
+
6
4
CAUTION
The sereas shaded or marked with designate components
which have special characters important for safety.