Read Sharp R-1900M (serv.man11) 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
Click on the first or last page to see other R-1900M (serv.man11) service manuals if exist.