Kenwood TK-3302 Service Manual page 35

F
X57-7582-XX C43 C48
-71 E,T 470p NO
-72 E3 100p 3p
TX-RX UNIT (X57-7582-XX)
D2,3,6
FREQUENCY
CONTROL
/RX VCO
L11
D6
180n
1SV325F
C44
R19 R21
22k 10k 1u
C45
1u
D4,8
FREQUENCY
CONTROL
/TX VCO
L10
D8
180n
1SV325F
5C
2ND_LO
QTTCXO
PLL_UL
PLL_STB
PLL_DAT
PLL_CLK
B
5R
AFVOLIN
AFVOLOUT
MOD
5T
5M
EN1
EN2
EN3
EN4
EN5
PTT
SIDE1
SIDE2
INT
BATT
IC305
BR24L16F-W
1 8
A0 VCC
2 7
A1 WP
3 6
A2 SCL
4 5
GND SDA
EEPROM
5T_C
5C_C
5R_C
RESET
LEDRX
LEDTX
SB
G
SCHEMATIC DIAGRAM
C52 C53 C54 C55 C56 C57 C58 C61 C64
6p 11p NO 2p 12p 6p 1p 3p 5p
9p 7p 3.5p 0.5p 8p 20p 1.5p 7p 3.5p
L18
270n
VCO (RX)
C63
* 6p
C52 *
L15
VCO/RX
Q4
2SK1875-F(V)
R27 R30
680k 27k
R26
T:3.3V
33k
L17
270n
VCO (TX)
* * *
C53 L16 C64
VCO/TX
Q5
2SK1875-F(V)
D9
KDV214E-P
MODULATOR
PTTSW
R:3.69V
T:3.62V
LD
VOX
QTI
R313
THDET
1k
R309
0
PCTV
R310
0
C413
1000p
QT/DQT_IN
VOX
RSSI
PCTV
H
C65 C67 C69 C78 D2 D3 L15 L16
6p 5p NO 33p NO 1SV325F 27n 18n
4p 4p 470p 30p HVC376B NO 33n 22n
R:3.25V
R36
RF AMP
100
Q9
0.76V
2SC5636
C70
0.5p
DC SW/
RX VCO
Q7
RT1P430U
* R32 L21
*
R33
4.70V
Q8
RT1P430U
DC SW/
RIPPLE
TX VCO
FILTER
C71 Q10
KTC4075E(Y,GR)
0.3p
Q6
KTC4075E(Y,GR)
RECTIFICATION
MDSW
R394
47k
61
EN2
62
EN1
63
DEST1
64
DEST2
65
PLL_UL
66
BATT
67
RSSI
68
BUSY
69
VOX
MCU
70
QT/DQT_IN
IC306
71
R5F212CCKCMC
EEPCLK
72
EEPDAT
73
TH_DET
74
DTMF
75
AVSS
76
PCTV
77
VREF
78
AVCC
79
PLLDAT
80 PLLCLK
C334
0.01u
C335
10u
RESET MODE
L303
AFCONT
BSHIFT ON:4.97V
C332
OFF:0V
5p
(B)
Q305
BEAT SHIFT SW
2SC4919
AF_CONT
I
TK-3302
R32 R33 R37 R42
470k 100 4.7k 22
390k 10 3.9k 47
4.82V
RF AMP
Q11
4.28V
2SC5636
*
C81
C78
R:3.70V
T:3.77V
15p
3.69V
R:0.59V
T:5.02V
R:5.01V
T:0.58V
DTRLOADN
STD
TCLK/DTRDO
TDATA/DTRCLK
DI/O
RDF/FD
SCLK
PTT
DIR
TXD
R322
1k
40
39 R323
APC_SW 38 1k
LEDTX LEDRX
37
RX_SW
36
TX_SW
35
OPTDET
34
TXDATA TXD
33
RXDATA RXD
32
NC
31
2TONE
30
NC
29
NC
28
NC
27
NC
26
NC
25
AFMUTE
NC
24
LED_BLUE MICMUTE
23
AF_MUTE
22
MIC_MUTE
21
AUX1
W/N
5.02V
X301 BEAT SHIFT SW
L78-1433-05
Q306
14.746MHz
R319 C337 2SC4919
R321
0
5p
(B) 10k
LEDRX
LEDTX
J
C86
10p
5C
2ND_LO
TH_DET
APC_SW
B
5R
AFVOLIN
AFVOLOUT
MOD
5T
BUSY
DTMF
W/N
DTRLOADN
STD
TCLK/DTRDO
TDATA/DTRCLK
DI/O
RDF/FD
SCLK
DIR
1/2_OSC
5M
PTT
OPTDET
TXD
MIC_MUTE
QT/DQT_IN
VOX
RSSI
PCTV
AF_CONT
SB
35
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