Schematic Diagram - Kenwood TK-3202 Service Manual

F
TX-RX UNIT (X57-6892-XX)
CV
D2,4,6,7
VCO OSCILLATION (TX)
FREQUENCY
*
CONTROL
/TX VCO
L10
L24 * *
R22
0
TX MODULATION
R25 R26 C45 R31
22k 18k 470k
1u
C902
R30
33k
1u VCO OSCILLATION (RX)
L11
100n
QTTCXO
PLL_UL
PLL_STB
PLL_DAT
PLL_CLK
B
5T
SP1
OSCIN
SP2
5R
5C
EN1
EN2
EN3
EN4
EN5
R421
51
OPTDET
52
1k
AF_CONT
53
54
55
56
57
58
59
60
VCC
VCC
61
MICROPROCESSOR
62
VSS
VSS
63
GND
64 30622MAA-B95GU
GND
65
66
67
68
69
70
71
72 LEDTX
LEDTX
73 LEDRX
LEDRX
SIDE1 74 PF1
75 PF2
SIDE2
R415
47k
R416
47k R:3.70V
T:3.57V
5T_C
5R_C
5C_C
RESET
INT
R404
470k(D)
AF_CONT
OPTDET
PTT
5M
SB
G

SCHEMATIC DIAGRAM

L19
220n
D6
* C52 * L16 * C64
D7
VCO/TX
Q4
2SK508NV(K52)
MODULATOR
L12
R34 R36
470k
270k
R:3.4V
L18
D8
220n
HVC376B
D9 * C55 L17
* * C65
HVC376B VCO/RX
Q3
D3,5,8,9
2SK508NV(K52)
FREQUENCY
CONTROL
/RX VCO
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
R420
7
CNVSS
6
47k
BYTE
5
EEPCLK
4
EEPDAT
3
2
DTMF
1
PCTV
C431
0.01u
4.96V
H
T:3.37V
* R40
RF BUFFER AMP
3.86V
Q6
0.72V C78
2SC5108(Y) C83
C73
33p
15p
0.5p(B)
3.7V
DC SW/TX VCO
Q5
R:4.94V
DTA143TE
T:0.58V
L22
R:0.59V
T:4.94V
R37
Q7
100
DTA143TE
DC SW/RX VCO
4.0V
C74
RIPPLE FILTER
0.5p
Q8
2SC4617(S)
CURRENT
STEERING
R901
4.7k
Q901
2SK1824
L404
R422
R903
1k
BSHIFT ON:4.95V
C432 R423
OFF:0V
Q407
5p 0
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-3202
TX/RX
4.62V
RF SW
C87 D101
RF AMP
Q9 10p HSC277
2SC4619(P,Q)
R:2.934V
T:3.002V
TX/RX
RF SW
R:2.87V
T:0V
FREQUENCY DIVIDER
Q408
IC407
BEAT
TC7W74FU
SHIFT
SW
C450
1
CK VCC
0.01u
2
X3
D PR
R904
Q408
7.37MHz
C435
0 0 3
2SK1830
Q CLR
5p 4
L77-1633-05
GND Q
C452
1000p
R301 C302
10k
270p
DETECTOR
D301
RB706F-40
R308
0
R355
R354
10k
10k
J
R:0V
T:2.846V
C102
C101
470p 12p
L250
18n
C290
2p
(B)
TH_DET
DCSW
B
5T
APCSW
RX LO1
SP1
OSCIN
SP2
5R
5C
MOD
RX_W/N
TX_W/N
DTRLOADN
STD
TDATA/DTRCLK
DI/O
TCLK/DTRDO
RDF/FD
8
SCLK
7
DIR
6
5
3.6864 MHz CLK
C451
XIN
0.01u
R304
EXTLIMIN
27k
AMP3O
C354 R357
0.1u 0
TXD
PCTV
MIC_MUTE
QT/DQT_IN
BUSY
RSSI
AF_CONT
OPTDET
PTT
5M
SB
33
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