Kenwood TK-3402(U) Service Manual page 35

F
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-8320-10)
Do
C30
L4
FIN
6.8n
270p
C37
3p
CV
50C
50T
MOD1
50R
16.8MHz
50M
50V
50C
+B
Freq
BATT
VOLIN
VOLOUT
33M
TH_DET
R710
1k
PLL_PS
PLL_UL
PLL_LE
PLL_DATA
PLL_CLK
3.3V
INT
RESET
GRNLED
BLULED
REDLED
PTT/RXD
SB
G
R28
1k
2.9V
C41
R30
150k 0.6V
10p
Q2
2SC5636
Fin buffer
AMP
EEPROM
IC700
EX25064ATA00A
1
S
VCC
8
2
Q
HoLD
7
3
W
C 6
4
VSS
D 5
R708
1k
61
QT/DQT IN
62
HSDDEC
63
BATT
R711
64
CVIN
10k
BUSY
65
BUSY
RSSI
66
RSSI
VOX
67
VOX
68
NC
69
NC
70
PLL_PS
71
PLL_UL F363BEDFEKDLF
72
PLL_LE
73
PLL_DATA
74
PLL_CLK
75
AVSS
76
WIDE/NARROW
77
VREF
78
AVCC
AsstSW
79
ASSTSW
TX/RX 80
TX/RX
HSDENC
RESET
MODE
R703
15k
C807
0.1u
H
TK-3402(U)/3402/3407
5.0V
CVIN
IC3
CVIN 1
oUT1
VDD
8
2
IN1-
oUT2
7
3
IN1+
IN2- 6
4
VSS
IN2+
5
BD7542FVM
DC AMP(CV)
33M
MODEL
40
CE
39
NC
38
NC
37
33MSC
36
LPSW
35
R734
EMP
34
4.7k
NC
33
5TC
MCU 32
50VC
IC702
31
NC
30
PTT
29
EMPTT
28
NC
EM_SCLK
27
EM_SCLK
26
R736
RXD
25 1k
TXD
24
NC
23
NC
22
5CC
21
R733
10k C720
C724
R732
VSS
68
0.01u 0.01u
C719
Beat shift
270p
ON:3.3V
C718
Off:0V
0.1u
VCC
19.200MHz
L78-1434-05
3.3V
C725
R738
0
C717 5p
3.3V
0.012u
Q701
KTC4075E(Y,GR)
I
DC switch(MOD)
Q1
SSM3J36TUT
Q1 conrol
Q3
R24 R27 KTK5132E-P
470k
10k
C33
0.01u
33MSC
5TC
50VC
EMPTT
R740
4.7k
TXD
5CC
R725 47k
X700
C729
5p Q702
KTC4075E(Y,GR)
Q701,702
Beat shift SW
J
VLO
Do
TASIS
50C
TX/RX
DICSW
50T
50R
16.8MHz
50M
50C
+B
VOLIN
Freq
CVADJ
WIDE/NARROW
HSDENC
APCSW
33M
PTT/RXD1
50V
MOD1
TXD
PTT/RXD
LSDO
XTALN
XTAL/CLoCK
CML_IRQ
33M
SB
DISCFB
QTDQTIN/MOD2
35
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