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Kenwood Manuals
Two-Way Radio
TK-3207
Service manual
Tx-Rx Unit (X57-6890-Xx); Schematic Diagram - Kenwood TK-3207 Service Manual
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F
TX-RX UNIT (X57-6890-XX)
CV
D2,4,6,7
VCO OSCILLATION (TX)
FREQUENCY
D6
CONTROL
/TX VCO
HVC376B
L24
L10
D7
R22
100n
0
HVC376B
TX MODULATION
C45
L12
R25
R26
R31
22k
10k
1u
470k
R30
VCO OSCILLATION (RX)
33k
HVC376B
L11
100n
HVC376B
D3,5,8,9
FREQUENCY
CONTROL
/RX VCO
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
54
55
56
57
58
59
60
VCC
VCC
VCC
61
MICROPROCESSOR
62
VSS
VSS
63
GND
64
30622MAA-B89GP
GND
65
66
67
68
69
70
71
72 LEDTX
LEDTX
73 LEDRX
LEDRX
74 PF1
SIDE1
75 PF2
SIDE2
R415
47k
R416
47k
BATT
5T_C
5R_C
5C_C
RESET
INT
RXAFO
4.96V
SB
PTT
AF_CONT
OPTDET
5M
G
SCHEMATIC DIAGRAM / 原理图
T:3.37V
L19
220n
*
C52
*
L16
C64
*
VCO/TX
Q4
2SK508NV(K52)
MODULATOR
R34
R36
470k
270k
R:3.4V
L18
R37
D8
220n
100
D9
*
C55
*
L17
*
C65
VCO/RX
Q3
2SK508NV(K52)
R447
12k
25
24
23
DTRLOADN
STD
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
H
R40
100
RF BUFFER AMP
3.86V
Q6
0.72V
C78
2SC5108(Y)
C83
C73
33p
15p
0.5p
R:2.934V
(B)
T:3.002V
3.7V
DC SW/TX VCO
R:4.94V
Q5
T:0.58V
DTA143TE
L22
R:0.59V
T:4.94V
Q7
DTA143TE
DC SW/RX VCO
4.0V
C74
RIPPLE FILTER
0.5p
Q8
2SC4617(S)
CURRENT
STEERING
ADDITIONAL PCB
C902
R901
MOD OUT
MOD IN
4.7k
1u
Q901
2SK1824
RX_W/N
GND
L404
R422
L78-1411-05
7.3MHz
1k
BSHIFT ON:4.95V
C432
R423
OFF:0V
Q407
5p
0
2SK1830
BEAT SHIFT SW
EEPROM
IC406
BR24L08F-W
1
8
A0
VCC
2
7
A1
WP
R424
3
6
47k
A2
SCL
4
5
GND
SDA
R425
47k
I
TK-3207
R:0V
TX/RX
T:2.846V
RF SW
C87
D101
C101
4.62V
10p
HSC277
470p
RF AMP
Q9
2SC4619
TX/RX
RF SW
R:2.87V
T:0V
X2
BEAT SHIFT SW
Q408
C435
2SK1830
5p
3.6864 MHz CLK
R301
C302
10k
270p
DETECTOR
D301
RB706F-40
R308
0
R354
R355
10k
10k
J
C102
12p
L250
18n
C290
2p
(B)
TH_DET
DCSW
B
5T
APCSW
OSCIN
SP1
RX LO1
SP2
5R
5C
MOD
RX_W/N
TX_W/N
DTRLOADN
STD
TCLK/DTRDO
TDATA/DTRCLK
DI/O
RDF/FD
SCLK
DIR
R426
XIN
0
R304
EXTLIMIN
27k
AMP3O
C354
R357
0.1u
0
PCTV
TXD
MIC_MUTE
QT/DQT_IN
RXAFO
BUSY
RSSI
SB
PTT
AF_CONT
OPTDET
5M
X57-689 2/4
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