Kenwood TK-3312 Service Manual page 43

Z
TX-RX UNIT (X57-7890-21)
THDET
F I N A L
DRVOUT
R D 0 7 M U S 2 B T 1 1 2
Q 2 0 5
R 2 3 9
0
H : 1 . 4 V
L : 0 . 7 V
TXBIAS
APCDB
50T
R:5.0V
T: 0V
50R
C 4 5 9 C 4 6 1
RXRF
0 . 7 5 p
1 p
B P F
B P F T U N I N G
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 S W
PTT/RXD1
RT 1 N 1 4 1 U - T 1 1 1
EMPTT
FB
OPTDET
VOLOUT
B
Note : The components marked with a dot (
AA
SCHEMATIC DIAGRAM
STRIP LINE
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
2 p 2 p 4 7 0 p
(B) (B)
R F A M P
Q 4 0 7
3 S K 2 9 3 - F
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
MUTE
OFF: 0V
A F A M P R 9 2 4
4 7 0 k
I C 8 1 5
TA 7 3 6 8 F G
D C S W
1 N C 1
Q 8 1 4 Po U T
1 0
2 S B 1 6 9 4
2 V C C
P W- G N D
9
3 N C 2
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
N F
R 9 1 5 6
1 . 5 k
D C S W
RT 1 N 4 4 1 U - T 1 1 1
C 9 2 2
MUTE
0 . 1 u
ON: 0V
Q 8 1 3
OFF:7.4V
•
) are parts of layer 1.
AB
TK-3312/3317
A N T S W
C 2 4 3 D 2 0 1 C 2 4 7
R 2 3 1
0
4 7 0 p 1 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:0.8V
R: 0V
T:4.9V
R:4.4V
T:0V
R 4 5 7 C 4 7 8
R 4 5 8
0
0
4 7 0 p
R:2.9V
T: 0V
B P F
T U N I N G
33M
PTT/RXD
R 9 2 9
1 k
R 9 2 8
2 7 k
D C S W
Q 8 2 2
RT 1 N 1 4 1 U - T 1 1 1
TXD
R 9 3 0
1 0 0
C 9 2 6
1 0 0 u 6 . 3
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
7.5V
Q 8 1 7
FB
(1.0A)
F 8 0 2
F 5 3 - 0 3 1 9 - 1 5
AC
L 2 2 1
L 2 1 9 L 2 2 0
3T 5T 4T
C 2 4 9 C 2 5 3 C 2 5 6
3 . 5 p 0 . 3 p 1 . 5 p
L 2 1 8
L 2 1 7
4T 1 . 8 n
A N T S W
C 4 8 4
C 4 8 2
2 p (B) 3 p (B)
C 4 8 9
C 4 8 7
3 0 p 6 p
(B)
B P F
T U N I N G
R 4 8 1
R 4 5 9
0 470k
5.0V
E11-0703-05
J802
PTT/RXD
MIC
MICIN
OPTDET
5M
AE
TXD
NC
SPO
SPI
E X T-
S P / M I C
I N T- M I C
R 9 3 1
0
I N T- S P
(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
6
7
43
X57-789 6/6