Read Sharp R-1900M Service Manual online
R1900M
11 – 5
[3] Figure S-2. Switching Power Supply Unit Circuit
4,
5
Output
Input
R27
R26
IC21
C23
R23
PC1A
2
1
R24
R25
C22
+
R21
L21
ZD21
C13
CN21
2
1
C24
F21
D7
R1
1
C7
C9
+
C10
+
C8
PC1B
4
3
R7
R22
C21
T1
12
2
10
8
7
4
3
FB1
D6
R6
C6
R3
R4
R5
C5
+
C1
CN1
3
2
1
C14
C1
1
C
12
R1
R2
TH1
R10
D5
IC1
5
3
2
1
4
6
8
7
NC
DR
V
CS
FB
ADJ
VCC
HV
GND
VZ3
D21
D8
L1
D1
R9
D2
D4
D3
Q1
R8
ZD2
VZ1
ZD1
F1
12
VZ2
CD1
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