Kenwood TK-3301 Service Manual page 30

K
TK-3301
TX/RX
T:4.09V
RF SW
T:3.18V R102
D10
MC2858
27k
C101 C103
470p
30p
Q101
2SC5636
RF AMP
L250
18n
C290
R:3.15V
2p(B)
5C
2ND_LO
TH_DET
APC_SW
B
5R
AFVOLIN
AFVOLOUT
MOD
5T
BUSY
DTMF
C385
R340 R342 R372
10k 10k 0
0.1u
R347
0
R341 C356 R345
10k 27k
1000p
DTRLOADN
STD
10
TCLK/DTRDO
11
TDATA/DTRCLK
TCLK/DTRDo
12
DI/O
TDATA/DTRCLK
DI/o
R348 13
RDF/FD
RDF/FD
1k 14
SCLK
SCLK
15
DIR
DIR
16
XoUT
1/2_OSC
3.6864MHz CLK
5M
PTT
OPTDET
TXD
MIC_MUTE
QT/DQT_IN
VOX
RSSI
PCTV
AF_CONT
SB
30
X57-777 3/4
L
SCHEMATIC DIAGRAM
R105
T:3.75V
C109
33k
C115
R109
6p
6p 0
Q102
2SC5455-A
RF AMP
T:4.90V
BUSY
MOD
R355
120k
C364 C371
12p 10u
C367 R357
1u 56k
C372
32
470p
AGND
31
RXIN
30
RXINo
IC308 29
AQUA-L FILTERo
28 R361
AUDIO PROCESSOR
EXPoUT
27 0
RXAFIN
26
RXAF
C366
0.1u
C374
1000p
M
R:7.5V
TX DRIVE AMP
T:2.63V
T:7.34V
Q103
R141 L104 RD01MUS1-T113
0 1.0n
T:4.1V
R121
12k R130
330k(D)
C137
100p
R128
VOLTAGE
PROTECTION
150k
(D)
R127
150k
(D)
B
CF201
C208
L72-0959-05
450kHz
0.1u
C207
R205
1000p
82k
IC201
TA31136FNG
FM SYSTEM IC
RSSI
R:4.95V
C386
0.01u
C381
390p
C390
R364 R369
100k 82k 1u
R363
100k
C382 R367 R373
39k 220k
0.015u
R365
3.3k
C384
R366
150k
0.1u
QT/DQT_IN
VOX
RSSI
N
TX-RX UNIT (X57-7772-70)
TX FINAL AMP
Q106
L107
C125
R119 RD02MUS1BT112
10p 2.7n 10
IC101
BA2904FVM
5 4
+IN2 VEE
6 3
-IN2 +IN1
7 2
oUT2 -IN1
DC SW
8 1
Q108
VCC oUT1
2SK1824-A
R135
100k
APC
C144
470p
DC SW
Q107
RT1N441U
MCF
XF201
L71-0549-15
T:4.37V
38.85MHz
C216
R213 OUT
R212 560
0.01u
220k
Q202
2SC4774
IF AMP
C214
4.27V
2p
R356 C377
4.7k 0.068u
C363 82p
R349 1M
R350
120k
D307
C365
MC2850
LIMITER
82p
R352
RECTIFICATION 150k
R353
D306
KDR731
12k
C361
1u
O
5T
DC SW
Q109
RT1P441U
PCTV
5R
AFVOLOUT
C223
IN R214
100
0.01u
MIC
PTT
OPTDET
TXD
MIC_MUTE
PCTV
AF_CONT
5M
SB