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4-2
A
Power Board Electric Diagram for SD-270
F1
TR1
T2AL/250ac
NTC 10
D1
1
1N4007
RV1
CON1
10K471
AC INPUT
D3
1N4007
2
R12
1/6W33
U1
TNY276
3
4
* CAUTION :
THE PARTS MARKED WITH
PLEASE USE THE PARTS HAVING THE DESIGNATED PARTS NUMBER WITHOUT FAIL.
A
B
C
D2
1N4007
L1
680uH
C12
102/400Vac
+ C1
+ C2
D4
22uF/400V
22uF/400V
1N4007
L6
T1 EEL22
1
C5
R2
R3
2
6
152/1KV
1/4W120K
1/4W120K
7
3
D8
9
IN4007
8
C9
5
10uF/50V
12
R11
11
4
10
1/6W22
R13
1/6W100k
R8
U2
1/6W2.2k
PC123X92
C10
1
U3
0.1uF/50V
TL431
ARE IMPORTANT PARTS ON THE SAFETY.
B
C
D
D5
IN4148
D6
IN4148
C6
+
D7
47uF/25V
FR102
D10
SR360
R1
C14
L2
NU
NU
6.8uH
+
C7
1000uF/16V
R10
1/6W100
C11
R9
0.1uF/50V
1/6W10k
D
4-2
E
C3
10uF/50V
C4
47uF/25V
8
7
6
5
4
3
R4(NU)
2
1
1/6W10k
8X2.5 HEADER
+
C8
470uF/16V
R5
1/6W5.6K 1%
R7
1/6W5.1k 1%
E
F
1
C1
B1
C10
C3
C11
C3
C12
C1
C14
D2
C2
C1
C3
E1
C4
E2
C5
B2
CON2
C6
D2
-24V
C7
D2
-12V
GND
C8
E2
+12V
C9
B2
GND
GND
CON1
A1
+5V
2
+5V
CON2
F2
D1
B1
D10
D2
D2
B1
D3
B1
D4
B1
D5
D1
D6
D1
D7
D2
D8
B2
F1
A1
L1
B1
L2
D2
L6
B1
R1
C2
R10
F3
3
R11
B2
R12
B2
R13
B3
R2
B2
R3
B2
R4(NU)
E2
R5
E3
R7
E3
R8
C3
R9
D3
RV1
A1
T1
C2
TR1
B1
U1
A2
U2
C3
U3
C3
4
F
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