Sharp R-990KS Service Manual page 36

R990K(W)
[3] Control Unit Circuit (Figure S-2)
C7
4.7k R7
HZ4A2
10μ/35v C6
ZD4
0.1μ/50v C5
HZ5C2
ZD3
/25v
22μ
10μ/35v C4
0.1μ/50v C3
C11
HZ16-1
ZD2
1/2w 470
R2
1000μ/35v C2
0.1μ/50v C1
10G471K
VRS1
(J1)
Figure S-2. Control Unit Circuit
4 P1
5 P2
6 P3
7 P4
8 P5
9 P6
10 P7
11 P8
12 P9
13 P10
15 P11
16 P12
17 P13
18 P14
19 P15
20 P16
22 1G
23 2G
24 3G
25 4G
26 5G
27 6G
28 7G
100k R93
100k R92
100k R91
1w 330 R100
C8
(J7)
4.7k R8
(J5)
(J3)
(J6)
(J4)
0.01μ/50v C9
(J2)
3.3k R40
SP40
D23
D20 D21 D22
IZA840DR IC1
0.1μ/50v C21
10μ/35v C20
0.1μ/50v C22
D24 D25 D26
12 – 4
3.3k
D77
R81
3.3k
D76
R80
3.3k
D75
R79
3.3k
R78 D74
3.3k
D73
R77
3.3k
R76 D72
3.3k
R75 D71
3.3k
R74 D70
3.3k R73
3.3k R72
3.3k R71
3.3k R70
2.2kF R64
100F R63
15k R50
D31
15k R30