Fm-Tv Unit - Icom IC-R3 Service Manual

12-3 FM-TV UNIT

R1
2.2 k
FI1
C1
LFSC25N12B0426B
0.001
1 2
D1
MA2S077
3.0 V
C21
1
R21
100 k
Q21
2SC4081 S
R23 R24
470 100
C22
180 P
L21
1 H
IFIN
GND
SIFOUT
C41
0.001
VIDEO
GND
AFOUT
C19
C61
R2
0.001
0.1
10
CP1
C20
0.001
C4
R3
100 P
47
C2 R4
3
0.001 47
4 2
1 C3
IC1
0.001
PC1688
C5
0.001
4.4 V
R28
100
C32
0.1
2.4 V
R30 C24 C25
5.6 k 22 22
R81
10
C76
47 P
R55
100
L51
C52
100 H
0.1
2.0 V
4.5 V
R51
Q51 12 k
2SC4215 O
C42 C51
100 P 22 P
L41 R41
1 H 1 k
1.5 V R53
560
R42 R46
5.6 K 100
R43 C43
330 0.01
3.8 V
C44
2.1 V 0.01
Q41
2SC4215 O
R44
1.5 V
4.7 k
R45 C45
560 0.01
R77 C18
6.8 k 0.1
15
R78
16
10 k
17
18
19
20
21
22
23
24
25
26
27
28
C13 C10 C11
0.1 0.1 0.1
R38
10 k
R31
3.3 k
R39
10 k
C26
IC21
C27
33
0.1 PC1663GV
1 IN1 8
IN2
2 G1A 7
G1B
3 V+ 6
V-
4 OUT1 5
OUT2
R33
3.3 k
C50
0.1
C77
0.01
C55
C53
68 P
L52
R52
220 P
10 k 0.56 H
D51 D52
1SV288 1SV288
C54
220 P
R47
4.7 k
D41
MA2S077
12 - 3
R8
6.8 k
R9 C17 R6
390 27 P 10 k
R10
680
14
13
12
11
10
9
8
7 R12
6
100
5
4
R13
3
100
2
D2 D4
1
L3
MA376 MA376
0.1 H
L1
R14
3.3 nH
39
C12
0.1
C28 R35 R40
0.1 10 k 47 k
Q23
UN9213
D3
MA2S111
C31
0.001
C29
4.7
1
VIN1 GND
2
SW1 VOUT
3
VIN2
4
SW2 VIN3
C30
4.7
IC22
NJM2246M
R54
100 k
C57
0.01
C75
22
C74
2.9 V C73 R73
4.7
1 1 k
R75 C72
1.2 k 0.1
R71
330 k
Q71
2SC4081 S
0.5 V
R74
220
C16
2 P
R15 R16
820
2.7 k
R36
150
R37
8
150
7
6
V+
5
J1
AFIN
1
FMTV5
2
B1
3
TRAC
4
C71
0.1
R79
10 k
1.1 V
C90
0.018