Kenwood TK-8180 Service Manual page 68

U
TK-8180
DT
CN301
1 Fin
REF 2
CPGND
4.99V
3
5C 4
5 GND
6
CP
5C
4.99V
X301
L77-1952-05
R362
4.99V
VC
MB VCC
0
L301
GND oUTPUT
2.2u
16.8MHz
PLL F_IN
DOUBLER AMP
Q301
2SC5108(Y)
C308
R369 R376
R371
0
0 0
10p
AM1
C145
1.5p
RF BPF
TUNING
D107
C156 C144
R108
0
470p
7p
1SV291
ANT SW
R133
TV
100k
MI2
AFO
ME
64
X57-699 5/9
V
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-6990-10)(C/3)
R308
PLL CP SW
IC302
3.9k
TC7S66FU
1 5
IN/OUT VCC
R378
2
OUT/IN
10k 4
3
GND
CP R373 CONT
10
CPGND 1
2
L305
5C
3
C309
4
C397
Fin
100p 5
12p
GND
REF C396
L304
0.01u
C307 470p
R303
560
4.75V
C317
100p
C395
0.31V 2p
C316
C389 C391 C393 L322
5.6n
6p
8p 2p 6p
C148 C151
1p 1p
RF BPF RF BPF
TUNING
TUNING
D108
C147 D109 C153
C150
5p 5p 5p
1SV291
1SV291
W
4.99V
R319
10
PLL SYSTEM IC
R320
18
4.99V
15 R323
CPGND
MUXOUT
14 R332
AGND
LE
R330
13
IC301
AGND
DATA
ADF4111BCP7
12 R327
RFinB
CLK
11 R321
RFinA
CE
10k
4.99V
A
C302
0.5p
L323 L324 C339
2.2n
4.7n
470p
7.90V
C154
1.5p
FRONT-END LNA
C124 R134
RF BPF
Q103
3.22V
TUNING
2SC3357
10p 0
D110
C119
2.46V
5p
1SV291
FL:2.5V
FC:4.0V
FH:5.8V
X
TX-RX UNIT (X57-6990-10) (B/3)
CN302
1k 1
UL 2
10 PLE
10 3 4
DT
10 PCK
GND 6
5
DGND
10.36V
C318 C320
R318
1.8k
2.2u20 2.2u20
R326
R317
Q302
2SC4116(BL)
0
270
R307 R311
Q303
2SC4116(BL)
0 1.8k
PLL LPF
PLL LPF
C130 C134
5p
3p
RF BPF RF BPF RF BPF
TUNING TUNING TUNING
Y
5C
C260
100p
C261
100p
11CL
R333
CV
0
AM1
C138 C142
5p
470p
RF BPF
TUNING
MI2
AFO
ME