Schematic Diagram - Kenwood TK-2000 Service Manual

TK-2000
TX-RX UNIT(X57-8093-00)
S2_D
4 EN2
5 S2_E
S2_F
6 EN3
S1_A
1 EN1
S1_B
2
3 S1_C EN4
S 4 0 2
SELECTOR DATA
S6A-0002-00
CLOCK
DACLD
PTTSW
PFKEY
PTT
Side
1
2
R305 1k
3
R306 1k
4
R307 1k
5
6
T91-0651-15
M I C 3 0 0
MIC
R 3 0 0
1.5k
R 3 0 3
4 7 0
R 3 0 4
CN302
4 7 k
1 PTT/RXD
3 R 3 0 2
MIC
1 k
1 1 IM
1 0
OPTDET
2 5MS
C 3 0 3
J 3 0 0
R 3 0 1
E11-0484-05
1 0 0
SP/MIC
0 . 0 4 7 u
JACKS
E11-0717-05
J 3 0 1
1
SPG
3
TXD
4 SPK
R 3 31
2
AFO
47k
R 3 0 8
1 k
CN303
SP+
SP
SP-
7.5V
FZA10BQ-3R15
CURRENT
F 5 0 0
STEERING
(3.15A)
+BATT
BATTERY
D 5 0 1
TERMINAL
RB531SM-30
-BATT
PROTECT
V R 5 0 0
CN510
R 3 1 - 0 6 8 4 - 0 5
POWER SW
/AF VOLIUM
VOLTAGE
DETECTOR/RESET
28
X57-809 1/4

SCHEMATIC DIAGRAM

CURRENT
STEERING
1 8
VIN7
VIN2
1 7
GND
D/A CONVERTER
VDD
1 6
RESET
R 2 A 2 0 1 7 8 N P
LD
I C 3 0 0
1 5
VDAREF2
CLK
1 4
VDAREF1
DI
1 3
VIN6
VIN3
VREF
C 3 0 5
C 3 1 0
0 . 0 1 u
0 . 0 4 7 u
D 3 8 0
E D Z V 6 . 8 B
R 3 8 9
1 k
PTTSW
R 3 1 1
1k
R 3 1 0
R 3 1 2
1 k
2 . 2 k
RXD
PTT
R 3 7 8
OPTDET
1k
TXD
+B
SB
5MS
5M
I C 5 0 1 NJM2878F4-05
5
1 N C
V o U T
2 V S S
4
3 C E
V I N
5.0V
VOLTAGE
REGULATOR/5V
R511
LTC044EEBFS8
R502
330k
330k
5MSC
INT
RESET
DATA
CLOCK
DACLD
PFKEY
5 M S
IC301
BA2904FVM
Vref
1 8
V+
7
2
- +
R 3 2 8
6
3
+ -
6 8 0 k
4 5
GND
LSD BUFFER
LSDO
C 3 1 1
T0
1 u
R 3 2 2
1 M
CURRENT
D 3 0 1
STEERING
C 3 5 3
1u
R B 7 0 6 F - 4 0
R 3 3 4
1 0 k
RXD
PTT
TXD
OPTDET
BPF
+B
SB
5 M S
5C
SB
DC SW
Q500
SP MUTE SW
RE1C001ZP
Q 3 0 6
C 3 0 2
RTQ035N03
1 0 0 u
6 . 3
Q 3 0 0
DC SW
R 3 2 1
4 7 0 k
Q 3 0 1
DC SW
LTC044EEBFS8
SPMUT
EN2
EN3
EN1
EN4
LSDO
T0
LED DC SW LED
GREEN RED
LTC014YEBFS8
D 4 0 1
D 4 0 0 Q401
B30-1779-05
B30-1782-05
RED LED
GREEN LED
ON:5.0V ON:5.0V
LEDG
C 3 3 6
R 3 5 5
0 . 0 1 u 4 7 k
C 3 2 3
DC SW
0 . 1 u
Q 3 0 4
LTA023JEBFS8
R 3 3 2
2 . 7 k
MIC AMP/LIMITER
I C 3 0 4
BA2904FVM
1 8
V+
7
2
- +
R 3 4 4 R 3 4 7 6
3
+ -
10k 1 0 k
5
4
G N D
C 3 3 2
0 . 0 1 u
C 3 3 3
1 0 0 0 p
VREF
F300
RW1E015RP
F53-0467-05
AF AMP ON:3.3V AF AMP
I C 3 0 2
TA7368FG
OFF: 0V
Q 3 0 2 ON:7.5V
10
1
RTQ035N03 OFF: 0V
NC1
PoUT
2
9
PW-GND
VCC
8 3
PRE-GND
NC2
C 3 2 0
C 3 1 4 1 0 0 p
4
7
PHASE
VIN
C 3 1 5 R 3 2 6 0 . 1 u
6 5
NF
RIPPLE
0
1 0 u 10
AF AMP ON:5.0V
AF POWER AMP
OFF: 0V
SP-
DATA
CLOCK
DACLD
PFKEY
EN2
EN3
EN1
EN4
LEDR
LEDG
LSDO
T0
DC SW
LTC014YEBFS8
Q402
LEDR
5 M S
VOXIN
HSDO
R 3 6 7
4 7 k
POWC
5VC
R 3 5 7
5 6 0 k
C 3 4 0
10p
RXD
PTT
TXD
OPTDET
BPF
+B
SB
5 M S
5C
Q 3 0 3
DC SW
R 3 4 5
560
SPMUT
5MSC
INT
RESET
VOL OUT