Schematic Diagram - Kenwood TK-2312 Service Manual

P
TX-RX UNIT (X57-7880-20)
THDET
50C
470
R60
3.7V
L 2
1 5 n
C 2 0
C 2 9 C 3 4
LOIN
1 5 p 4 7 0 p
4 7 0 p
CV(A)
L 4
R 2 7
CV
1 0 k
R19
R 1 7
R 2 0
CP
0 6 8 0 0
CPZ
L 5
1 0 u
16.8M
50C
D C S W
Q 11
S S M 3 J 0 5 F U - F
R 6 7
VCOS
1 0 k
DCSW
TX/RX
MOD2
AF_CONT
50T
APCSW
50V
50M
33M
BPF1
PC/BPF2
TXD
ASSIST
50R
DETAF
M I C A G C
C 8 9 6
R 9 0 2
MIC
1 0 k
0 . 1 u
D807
K D R 7 3 1
C 8 9 7
0 . 4 7 u
MICFB
RECTIFICATION
C 8 9 8
0 . 4 7 u
D 8 0 8 K D R 7 3 1
RECTIFICATION
Q 8 0 9
K T C 4 0 7 5 E ( Y, G R )
R 9 0 3
1 0 0
VOX
RSSI
33M
MICMT
WID/NAR
PTT/RXD1
SB
EMPTT
BUSY
PTT/RXD
OPTDET
VOLOUT
B
Q

SCHEMATIC DIAGRAM

R 6 2
2.5V
68k
Q 2
2 S C 5 6 3 6
2.2V
R F B U FF
D 1 2
C 5 1
L 7
1 0 u
4 7 p
1 S V 3 2 5 F
D8
C 4 7
1 S V 3 2 3 F
D 9
8 2 p
1 S V 3 2 3 F
D C S W
R 6 8
Q 1 2
2 S K 1 8 3 0 F
0
50C
A G C A MP
Q 8 1 0
2 S C 4 11 6 ( G R ) F
R 9 0 6
1 k
C 9 0 9
R 9 1 0
1 0 k 0 . 1 u
R 9 0 7
2 . 7 k
Q 8 11
RECTIFICATION
2 S A 1 5 8 6 ( Y, G R ) F
D 8 1 0 M C 2 8 5 0
A G C A MP
R 9 11
R 9 0 8
1 0 k
1 0 0 k
R909
1 M
4 7 p
C 9 0 7
RECTIFICATION
C 9 0 4
4
o U T
I N -
3
0 . 4 7 u
V S S
2
D 8 0 9
5
K D R 7 3 1
V D D I N +
1
3.3V
V O X A MP
I C 8 1 7
T C 7 5 S 5 1 F E ( F )
V O X
C 9 4 9
1 0 0 0 p
R
TK-2312/2317
C 7 2
5 p (B)
R X V C O
R 4 4
R F B U F
M C H 3 9 1 4 ( 7 ) - H
22
2 S C 5 6 3 6
Q4
Q8
C 6 6
R 4 6
0 . 5 p
1 5 0 k
0.7V
T X V C O
R 4 5
M C H 3 9 1 4 ( 7 ) - H
22
Q 5
R:4.2V
T: 0V
C 6 7
0 . 5 p
R I P P L E
F I LT E R
5.0V
K T C 4 0 7 5 E ( Y, G R )
R 3 9
56k
50C
0.6V
C 4 9 6
0 . 1 u
R 4 6 9
3 3 k
D C S W
R912
I C 4 0 2 N J U 7 1 0 8
0
1
I N -
V D D
2
V S S
3
I N +
O U T
W:3.3V
S
C 7 3
3.9V
C 8 5
1 5 p (B)
3.6V
R F A M P 2 2 p
L 2 5
2 S C 5 6 3 6
Q 9 1 5 n
4.6V
R: 0V
T:4.2V
4.2V
L 1 6
S S M 3 J 0 5 F U - F
Q 7
D C S W
Q3
D C S W Q 6
S S M 6 L 0 5 F U - F
R: 0V
T:3.3V
50R
50C
R 4 1 4
1 0 0
C 4 1 5
4.8V
3 9 p
R 4 1 0
C 4 1 0 L 4 0 2
3 3 0 k
1 0 0 n
2 2 p
Q 4 0 3
K T C 4 0 8 0 E - P
T R I P
WIDE
C F 4 0 2
5.0V
L 7 2 - 1 0 1 0 - 0 5
C 4 0 6
C 4 0 4
0 . 1 u 0 . 1 u
5
R 4 7 1
4
4 . 7 k
Narrow
C F 4 0 1
L 7 2 - 1 0 4 5 - 0 5
D 4 0 1 D 4 0 2
C 4 0 3 C 4 0 5
0 . 1 u 0 . 1 u
K D S 1 2 1 E - P K D S 1 2 1 E - P
F I L S W
F I L S W
N: 0V
T
C 7 7
LO
1 8 p
THDET
50C
DCSW
AFCONT
50T
APCSW
50V
50M
33M
BPF1
PCBPF2
TXD
50R
50C
2NDLO
MIXO
IFIN
WID/NAR
DETAF
RSSI
MIC
PTT/RXD1
SB
EMPTT
BUSY
PTT/RXD
OPTDET
VOLOUT
B
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