Kenwood TK-7302 Service Manual page 43

F
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-76 0-XX)
1
C56
L30 R40 D7
4.7u 100p 1SV325F
0
D4-11,13,14
FREQUENCY CONTROL
(TX/RX VCO)
L9
L35 D6
4.7u 1SV325F
C54 R38
47p 0
D12
MODULATION
CONTROL (TX VCO)
L7
TX/RX
9CL
R553 R953 R954
0 0 0
9.03V
HA17358BFEL-E
C587
1
1u
2
3
4
RF BPF TUNING
VOLTAGE DC AMP
ASTC
ASTC
5C
2
DISC
FREQ
G
C73 6p
Q4
R : 7.06V R : 1.20V
RX VCO
Q4
L19
MCH3914(7)-H
120n
C62
33p
R : 0V
Q5
T : 7.38V
2SJ347F
Q6
C74 8p
TX VCO
T : 4.10V
Q6
C61
L18
MCH3914(7)-H
100p 150n
R43
100k
9CL
R : 9.01V
D506,508
RF BPF
TUNING
C575 C577
4p 1p
L515
C583
22n
470p
FRONT-END
LNA
9C
IC501
8
VCC
C592
7
1u
6
5
VEE
17
R708
4.7k
17
H
TK-7302/7302
1
Q9,10
VCO BUFFER AMP
C79 2.42V
R77
5.34V
0.74V
1p
0
Q9
C84 C86
2SC5108(Y)F
18p 5p
Q5,7
TX/RX VCO
SWITCH
7.50V
Q7
KRX102U
L24
9CL
R52
1k
R : 3.15V
T : 0V
T : 0.90V
C300
100p
9CL
7.51V 9.03V
Q8
KTC4075E(Y,GR)
8.20V
RIPPLE
R974
FILTER
39
R560
0
R : 8.16V
R562
R : 7.58V
CN506
82
C591 R572
Q506
3SK318
470p 0
R : 3.62V
R : 2.28V
3
D711,712
MIC AMP AGC DETECTION
D711
R719
MC2858
D712
0
1SS372F
R720
MIC MUTE
100
SWITCH
Q702
2SC4919
CN723
C739 R714
L700
0.1u 22k C747 R722
0.1u 2.2k
Q701
2SK1830F
MIC MUTE
SWITCH
2
I
V /7302H/7302H
( )
6.80V
2.65V
CN2
Q10
2SC5108(Y)F C90 R61
15p 0
9C
9R
T : 8.85V
TX DRIVE AMP
Q300
RD00HVS1-T113
T : 2.78V
L300 L301 L302
18n 10n 22n
L303
12n
T : 2.78V
9T
L706
C546
22n
7p
CN504
L504
C554
27n
8p
D509,510
RF BPF
TUNING
C595 C597
3p 3p
CN507
C601 C603
4p 18p
R731
SSM3J05FU-F
C749 100k
0.1u
MIC/MOD AMP
IC700
NJM2100V-ZB
R868
1 8
VDD
7
0
2
3 6
1.62V 4 5 R867
VSS
0
C924 C754 0.1u
1u
C925 1u
2
J
V
( )
1
TX/RX
BAND SWITCH
R : 0V
T : 3.32V
D719
HVC131
D720
HVC131
R : 3.36V
T : 0V
R63
4.7k
9T
C322
L304
270p
15n
RF
3
L708 C946
68n
24p
3
3
SCRAMBLER
SWITCH
Q705
3.3C
3.24V
17
HSDO
MIC
DISC
FREQ
2
43
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