Schematic Diagram - Tx-Rx Unit (X57-695X-Xx) (A/2) - Kenwood TKR-750 Service Manual

A
TKR-750
TX-RX UNIT (X57-695X-XX) (A/2)
1
A2 SUB UNIT (TX VCO/PLL) (X58-4790-10)
TX-CV
(TP102)
2
CN350
GND 1
STT 2
STT
8CL 3
8CLT
CV 4
9CL 5
9CLT
MO 6
3
4
5
6
7
74
X57-695 (A/2) 1/4
B
SCHEMATIC DIAGRAM
D354
L352
MODULATION
R351
10u
0
FREQUENCY
CONTROL
L353
D352 C356
R353
10u
0
1SV282 27p
FREQUENCY
1
GND
CONTROL
2
STT
3
8CL
4
CV
L350
5 R350 MODULATION
9CL
10u
0
6
MO
FREQUENCY
CONTROL
L351 D353
C355
R352
10u
0
18p
1SV282
FREQUENCY
CONTROL
C320 C318
R316
1.5k
2.2u10
2.2u10
ACTIVE
FILTER
R312
Q300
2SC4116(GR) 220
R311
22k
ACTIVE
R310
FILTER
R320
6.8k
Q301
2SC4116(GR)
1k
C313
4p
L301
39n
BUFFER AMP
IC1
NJM2904E
1 8
AOUT +V
2 7
A-IN BOUT
3 6
A+IN B-IN
4 5
-V B+IN
C179 0.01u
C
R368
33
TX-VCOL
Q350
2SK508NV(K52)
C374
1p
C366 C368
DC SW
Q352
Q350 15p
27p 2SC4116(Y)
VCO OSC
D355
TX-VCOH
Q351
2SK508NV(K52)
C367 C369
Q351 9p
18p
VCO OSC
PLL
IC300
SA7025DK
11 10
PHA AUXIN
12 9
VSSA RA
13 8
PHI REFIN
R309
220 14 7
PHP VCCP
L306
R306 15 6
VDDA RFIN
22
16 5
RN RFIN
17 4
RF VSS
L305
18 3
LOCK STROBE
19 2
TEST DATA
L304
L300 20 1
VDD CLOCK
C316
4p
L302
C321
Q302
2SC4215(Y)
39n
47p
BUFFER
AMP
1 4
VC +VDC
2 3
GND OUT
X3
16.8MHz
D
CN351
BUFFER
AMP
GND
2
Q355
2SC4215(Y) C379
VO
1
10p
R359
47
R362
4.7k
DC SW
R364
Q354
10k
DTC114EUA
C375
DC SW
1p
Q353
2SC4116(Y)
R357
R363
470
4.7k
C306
0.01u
C305
R305
CN300
0
1000p
FIN 1
10
C304 5C 2
1000p
LDT 3 11
EPT 4 12
R304 100
DP 5 13
R303 100
CP 6 14
R302 100
REF 7 15
R301 100
R300 10
R319 33
C325 5p
* L27
C89
0.01u
TX-RX UNIT
X57-695X-XX L27
0-11,2-70 K,E 3.9u
0-12 K2 10u
E
VO
8 GND
7 VO
-2.7dBm
9 FIN
5C
LDT
EPT
DP
CP
REF
MB
MO