Block Diagram - Kenwood TK-3000 Service Manual

A
TX-RX UNIT (X57-8103-XX)
D2,3,5
FREQUENCY
CONTROL
D 3
C N 3
L 1
1 S V 3 2 5 F
2 7 0 n
C 10
R 1 8
2 2 k
1 u
Q2,D4
TX/RX SW
R3
2 . 2 k
R 4 3
1 0 k
DC SW
Q 1
RT1N141U-T111
PLPS
CURRENT
STEERING
DATA
CLOCK
DACLD
R305
R306
R307
T91-0651-15
M I C 3 0 0
MIC
B
X57-8103-00
X57-8103-01
D6
MODULATOR
VCO
✽ ✽
C12 L 3 C 1 7
4 p(B)
MCH3914(7)-H
Q 4
4.17V
C 4 3
1 0 0 0 p
MOD
Q 2
RT1N141U-T111
SHIFT
C N 1 C N 2
R 2 6
3 . 9 k
PLL SYSTEM
C 2 3
9
CLoCK
F I N
8
C 1 6
1 0 0 0 p
10
D A T A
X F I N
7
1 0 0 0 p
1 1 L E
G N D
3.0V
6
1 2 P S
Do
5
1 3 Z C
V C C
4
14
LD/FoUT
VP
3
1 5 P
oSCoUT
2
C 2 7
16 R
oSCIN
1
2 2 p
I C 1 MB15E03SL-E1
R 1 9
1 0 k
R 2 0
1 0 k
R 2 1
1 0 k
T0
MOD R 3 1 6
0
R 3 2 2
D/A CONVERTER
1 M
1
VIN7
VIN2
1 8
2
VDD GND
1 7
3
R 2 A 2 0 1 7 8 N P
LD RESET
1k 1 6
I C 3 0 0
4
VDAREF2
CLK
1 5
1k
5
DI VDAREF1
1k 1 4
6
VIN3 VIN6
1 3
C
C7 C12 C21 C22 C54 C174
K,M 15p 22p 0.75p 0.75p 4p 33p
M2 27p 27p 0.5p 1000p NO 15p
RF BUFFER
0.75V
R 3 3
4 7 k
2SC5108(Y)F C 3 3
C 2 9
Q 5
3 3 p
0 . 5 p
(B)
C 3 6
2 p(B)
L 8
1 5 n
2SC5383-T111
Q 3
RIPPLE FILTER
T/RSHF
5.0V
VOLTAGE
REGULATOR/3V
Q7
2SC5383-T111
5M
TCXO
X1
VCoNT
VCC
C 3 8
GND
oUTPUT
2 2 p
L77-3074-05
(19.2MHz)
C 3 1 1
1 u
LSD BUFFER
IC301
NJM12904RB1
Vref
1
V+
2
VREF
- +
3
+ -
4
GND
D
C233
C175 C176 C181 C187 C225 C230 C236
3p(B) NO 2p NO 6p 6p 4p 22p
NO 22p 3p 2p 2p 5p 6p 10p
R:1.03V
T:1.69V
RF AMP
C42
4 p
1.82V
2SC5636
Q 6
C 3 9
10p (B)
R:4.93V
T: 0V
5C
5.0V
CVDET
2ndLO
C 3 2 8
R 3 9 0 R 3 5 3 R 3 6 5
1 k 0
0
0 . 3 9 u
5 M S
AF FILTER
I C 3 0 3
V+ AoUT
8
BoUT
A-IN
7
R 3 5 1
A+IN
8
6 B-IN
1 8 0
7 GND
5 B+IN
C 3 3 5
R 3 2 8
6 0 . 1 8 u
N J M 1 2 9 0 4 R B 1
6 8 0 k
5
R 3 4 8
5 6 k
VREF
E
C237 C238 C239 C243 C245
22p 5p 1p 470p 3p
10p 9p 0.5p 0.1u 7p
D 1 0 0
H S C 2 7 7
TX/RX SW
1stLO
R 3 6 1
8 2 0
5R
R:4.9
T: 0V
1 R 3 5 0
4 7 0
2
C 3 4 6 C 3 2 4
3
0 . 1 8 u R 3 6 4
4 0 . 1 8 u
4 7 0
C 3 4 3
0 . 1 8 u
R 3 4 2
1 5 k
R:2.49V
T:2.45V