Kenwood TK-3201 Service Manual page 31

F
TX-RX UNIT (X57-6972-70)
CV
VCO OSCILLATION (TX)
D2,4,6,7
D6
FREQUENCY
CONTROL
HVC376B
R22 L24 L10 D7
100n
0
HVC376B
TX MODULATION
L12
R25 C45 R31
R26
10k
22k 1u 470k
R30
C902
1u 39k
QTTCXO
PLL_UL
PLL_STB
PLL_DAT
PLL_CLK
B
5T
OSCIN
SP1
SP2
5R
5C
EN1
EN2
EN3
EN4
EN5
VCC
VSS
R421
51
OPTDET
52
1k
AF_CONT
53
CALLING ALERT SW
54
55
56
57
58
59
60
VCC
VCC
61
MICROPROCESSOR
62
VSS
VSS
63
GND
64 30622MAA-B91GP
GND
65
66
67
68
69
70
71
72 LEDTX
LEDTX
73 LEDRX
LEDRX
74 PF1
CALL
75 PF2
MONITOR
BATT
5T_C
5R_C
5C_C
RESET
INT
5M
4.96V
AF_CONT
OPTDET
PTT
SB
G
SCHEMATIC DIAGRAM
L19
220n
C64
C52
L16 4p
12p 27n
VCO
Q4
2SK508NV(K52)
MODULATOR
R34 R36
470k 270k
R901
4.7k
R447
12k
25
24
23
22
QTVCO
DIR
21
TDATA/DTRCLK
20
DI/O
19
SCLK
18
RDF/FD
17
TCLK/DTRDO
16
INT
R419
15
VCC
14 47k
VCC
13
IC405
XIN
12
VSS
11
XOUT
10
RESET
9
8
BSHIFT
7 R420
GND
6
47k
BYTE
5
EEPCLK
4
EEPDAT
3
2
DTMF
1
PCTV
C431
0.01u
PCTV
MIC_MUTE
TH_DET
QT/DQT_IN
VOX
BUSY
RSSI
AF_CONT
H
T:3.45V
R40
100
RF BUFFER AMP
Q6
0.69V C78
2SC5108(Y) C83
C73
33p
15p
0.5p
(B)
3.7V
L22
RIPPLE FILTER
Q8
2SC5383
CURRENT
STEERING
L404
R422
1k
BSHIFT ON:4.95V
C432
OFF:0V
Q407
2SK1830
BEAT SHIFT SW
IC406
BR24L08F-W
1 8
A0 VCC
2 7
A1 WP
R424
3 6 47k
A2
SCL
4 5
GND SDA
R425
47k
EEPROM
I
TK-3201
TX/RX
T:2.85V
RF SW
C87
D101 C101
4.73V
10p
HSC277 470p
3.4V
RF AMP
Q9
2SC4619(P,Q)
R:2.9V
T:3.0V
TX/RX
RF SW
R:2.87V
X2
BEAT SHIFT SW
L78-1411-05
Q408
7.370MHz
R423 C435
2SK1830
5p 0 5p
Q317
2SK1824
R301 C302 R304
10k 27k
270p
CALLER ALERT
J
C102
12p
L250
18n
C290
2p
(B)
DCSW
B
5T
APCSW
OSCIN
SP1
RX LO1
SP2
5R
5C
MOD
TX_W/N
RXD/PTT
TXD
TCLK/DTRDO
TDATA/DTRCLK
DI/O
RDF/FD
SCLK
DIR
XIN
5M
PCTV
MIC_MUTE
TH_DET
QT/DQT_IN
VOX
BUSY
RSSI
AF_CONT
OPTDET
PTT
SB
X57-697 2/4