Kenwood TK-8180 Service Manual Supplement page 46

U
TK-8180
DT
CN301
1
Fin
REF 2
CPGND
4.99V
3
4
5C
5 GND
CP 6
5C
4.99V
X301
L77-1952-05
R362
4.99V
MB VC VCC
0
L301
GND oUTPUT
2.2u
16.8MHz
PLL F_IN
DOUBLER AMP
Q301
2SC5108(Y)
R371 R369 * C308 R376
0
0 0
AM1
C145
*
RF BPF
TUNING
D107
C156 * C144
R108
0
470p
1SV291
ANT SW
R133
TV
100k
MI2
AFO
ME
42
X57-699 5/9
V
SCHEMATIC DIAGRAM
TX-RX UNIT (X57-6990-XX) (C/3)
R308
PLL CP SW
3.9k
IC302
TC7S66FU
5
1
IN/OUT
VCC
R378
2
OUT/IN
10k 4
3
GND
* R373 CONT
CP
CPGND 1
2
L305
5C
3
C309
Fin 4
C397
100p
5
12p
GND
C396
REF
L304
0.01u
C307 470p
R303
560
4.75V
C317
100p
* C395
0.31V
* C316 C389
* * C391 * C393 L322
5.6n
C148 C151
1p 1p
RF BPF RF BPF
TUNING TUNING
C147 D108 D109 * C153
* * C150
1SV291 1SV291
W
4.99V
R319
10
PLL SYSTEM IC
R320
18
4.99V
15 R323
CPGND
MUXOUT
14 R332
AGND
LE
13 R330
IC301
AGND
DATA
ADF4111BCP7
12 R327
RFinB
CLK
R321
11
RFinA
CE
10k
4.99V
A
C302
*
* L323 L324 C339
*
470p
7.90V
C154
*
FRONT-END LNA
C124 R134
*
RF BPF
Q103
3.22V
TUNING
2SC3357
0
D110 C119
*
2.46V
1SV291
FL:2.5V
FC:4.0V
FH:5.8V
X
TX-RX UNIT (X57-6990-XX) (B/3)
CN302
1k 1 2
UL
10
PLE
10 3 4
DT
10
PCK
6
GND
5
DGND
10.36V
C318 C320
* R318
2.2u20
2.2u20
* R326
R317
Q302
2SC4116(BL)
0
R307 * R311
Q303
2SC4116(BL)
0
PLL LPF
PLL LPF
C134
C130
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