Kenwood TK-2312 Service Manual page 43

Z
TX-RX UNIT (X57-7880-20)
THDET
F I N A L
DRVOUT
R D 0 7 M U S 2 B T 11 2
Q 2 0 5
R 2 2 9
4.7
R 2 30
4.7
H:1.1V
L :0.9V
TXBIAS
APCDB
50T
R:5.0V
T: 0V
50R
C 4 5 9 C 4 6 1
RXRF
1 0 0 0 p 1 0 0 0 p
B P F T U N I N G
50V
50M
33M
BPF1
TXD
AFCONT
PTT/RXD
MIC
7.5V
SB
C 9 1 4
1 u
D C SW
PTT/RXD1
RT 1 N 1 4 1 U - T 111
EMPTT
FB
OPTDET
VOLOUT
B
Note : The components marked with a dot (
AA
SCHEMATIC DIAGRAM
STRIP LINE
L 2 1 2 L 2 1 3
3T 5T
L 2 1 0
L 4 1 5
C 4 6 6 C 4 6 7 C 4 9 5
R 4 4 8
0
6 p (B) 6 p (B)
4 7 0 p
R F A M P
Q 4 0 7
3 S K 2 9 4 - FP
B P F T U N I N G
Q 8 1 6
Q 8 1 5
U PA 6 7 2 T- A U PA 6 7 2 T- A
L E V E L
L E V E L
C O N V E RT E R
C O N V E RT E R
MUTE ON:7.4V
OFF: 0V
A F A M P R 9 2 4
I C 8 1 5 4 7 0 k
TA 7 3 6 8 F G
D C SW
1 NC1
Q 8 1 4 P o U T
1 0
2 S B 1 6 9 4
2 VC C
P W- G N D
9
3 NC2
P R E - G N D
8
C 9 2 4
4 V I N
P H A S E
7
1 0 0 p
5 R I P P L E
NF
6
R 9 1 5
1 . 5 k
C 9 2 2
MUTE
0 . 1 u
ON: 0V
Q 8 1 3
OFF:7.4V
•
) are parts of layer 1.
AB
TK-2312/2317
A N T S W
L 2 1 4 C 2 4 0 C 2 4 3 D 2 0 1
R231
6T
0
1 0 0 0 p 1 0 0 0 p 1 0 0 0 p
H V C 1 3 1
D 2 0 2
H V C 1 3 1
A N T S W
R: 0V
T:4.9V
R:4.2V
T:0V
R 4 5 7 C 4 7 8 R 4 5 8
0
0
1 0 0 0 p
R:3.0V
T: 0V
B P F
T U N I N G
33M
PTT/RXD
D C S W
Q 8 2 2
RT 1 N 1 4 1 U - T 111
TXD
1 0 0 u 6 . 3
MUTE ON:3.3V
OFF: 0V
A F M U T
A F M U T
Q 8 1 8
Q 8 1 9
2 S K 3 5 7 7 - A 2 S K 3 5 7 7 - A
DC S W
Q 8 1 7
FB
RT 1 N 4 4 1 U - T 111
(1.0A)
F 8 0 2
F 5 3 - 0 3 1 9 - 1 5
AC
L 2 2 1
C 2 4 7 L 2 1 9 L 2 2 0
6T 9T 8T
C 2 4 9 C253 C256
1 5 p
6 p 7 p
R: 0V
T:0.8V
L 2 1 7 R 2 4 0
9T
0
A N T S W
C 4 8 2 C 4 8 4
6 p (B) 6 p (B)
C 4 8 9
C 4 8 7 L 4 20
4 7 n
1 0 p 3 3 p
(B)
B P F
T U N I N G
5.0V
R929
E11-0703-05
J802
1 k
PTT/RXD
MIC
MICIN
R 9 2 8
OPTDET
5M
2 7 k
AE
TXD
NC
SPO
SPI
R930
EXT-
1 0 0
SP/ MIC
C 9 2 6
R 9 3 1
0
7.5V
(2.5A)
F 8 0 1
L 8 0 1
+
F 5 3 - 0 3 2 4 - 1 5
7.5V
PROTECTION
BATTERY
-
AD
1
A N T
2
3
4
5
I NT-MI C
INT- SP
6
7
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