Kenwood TK-7160 Service Manual page 44

F
TX-RX UNIT (X57-7080-10)
VCO 1/2 DIVIDER
5.01V
IC402
UPB1509GV
BUFFER AMP
1
5.92V
Q446
VCC1 VCC2
0.76V
C469 C470
2SC5636
2
IN OUT
6p 2p 3
IN SW2
4
GND SW1
R454
0
TX/RX
UL
XF351
R:5.01V R:0.75V
L71-0624-05
C351 C350
R354 4
R353
100k
33p
470 0.01u
Q351
2SC5488
IF AMP
R309
3.3k RECTIFICATION
SQL AMP
R:4.28V
Q301
C309
2SC3928A
C306
FLAMPO
0.022u
1000p
R:1.10V D301
R:1.63V
MA742
RSSI
NARROW
WIDE
PLLE
DTM/HSDI
DT
CK
EVLLD
DETSW
SCRSW
HSDSW
AFW
MICMT1
LOSDI
R273
Q241
RT1P141U
180k
W/N SW / TX (D)
MICEM
G
SCHEMATIC DIAGRAM
RF AMP
7.40V
Q447
8
1.2V
2SC4649(N,P)
L457
C476
7 C475
100n
6 1000p 18p
0.52V
5
TP
R:2.53V
L352
C349
1 R355
560n
0.01u 330 MIXER
R:6.30V
Q352
3SK318
D
G2
G1
C359 S
R:1.26V
8p
R269
68k
(D)
C264
2.5V
33p
2.5V
1
AGNDIN
DTRAIN
2
TXIN AMP4O
3
AUDIO
TXINO AMP4N
PROCESSOR
4
LIMLV
AMP4P
5
IC241
EXTLIMIN AMP3O
AQUA-L
5.0V 6
MOD AMP3N
7
VDD AMP3P
8
DTRLOADN
VSS
9
STD
C251
0.047u
H
C480
100p
RF AMP
RF SW
R:0V
(TX/RX)
Q501
T:5.61V T:1.21V
D448 2SC3357
HSC277
C502 C503
R503
4.86V
1000p 18 100p
T:0.43V
R:5.65V
RF SW TEMPERATURE
T:0V (TX/RX)
COMPENSATION
C487
R462
11p
1k
D351,352
R:6.96V
RF BPF TUNING
C367
R364 C371
0
150p 2p
R:3.19V
R207
18k
25 R259
24 390k(D)
23 R258
C256 200k(D)
22
21 330p
20
R257
180k
19
C255
18
56p
17
XIN
R254
470k
R252 C252 2SC4649(N,P)
R251 R253
R238
47k 100k 0.1u 5.6k
47k
I
TK-7160
PRE DRIVE AMP
Q502
T:6.92V RD00HVS1 T:7.6V
C509 C516
R517
15p 0
27p
T:3.37V
R:4.37V
RF AMP
Q353
D353,354
3SK318
RF BPF TUNING
R369
D G2
C384
C380
0
S
G1
100p 1p
R:2.84V
R:1.09V
R:1.69V
R:1.71V
R276 R277
22k 22k
R255 R256
150k 47k
R235
47k
R240
R250
0
Q242 1M Q243
X241
C234 C236 2SC4649(N,P)
5p L77-1968-05 5p
3.6864MHz
Q242,243
AQUA BEAT SHIFT
J
C517 L503 L504
27n
27n
820p
TX/RX
UL
C388 C391
7p
16p
R381
100k
8TC
SQIN
RSSI
NARROW
WIDE
PLLE
DT
CK
EVLLD
DETSW
SCRSW
HSDSW
AFM
NICMT1
LSDI
MICEM
LIMSW
HSDI
DTMF/MSK
QT/DQT
ABS
R236
47k
41
X57-708 2/4