Kenwood TK-3201 Service Manual Supplement page 26

K
TK-3201
TX-RX UNIT (X57-6972-70)
T:3.44V T:4.89V
C107 R108
R103
18k 6p 1.5k
RF AMP
Q100
Q101
2SC4619(P,Q)
2SC5192-A
RF AMP
DCSW
B
5T
APCSW
OSCIN
SP1
RX LO1
SP2
5R
5C
R:5.0V
MOD
T:0V
TX_W/N
RXD/PTT
TXD
W/N SW/TX
Q301
RT1P141U
R322
120k
R323
56k
R317
470k R315
C319
330k
270p R312
330k
TCLK/DTRDO
TDATA/DTRCLK
DI/O
R306
RDF/FD
1k
3.6864 MHz CLK
SCLK
DIR
XIN
5M
R354 R355
10k
10k
PCTV
MIC_MUTE
TH_DET
QT/DQT_IN
VOX
BUSY
RSSI
AF_CONT
OPTDET
PTT
SB
X57-697 3/4
L
SCHEMATIC DIAGRAM
C112 R112 C144 L103 R149
7p 27 1000p 15n 0
T:4.9V
APC SW
Q104
RT1N141U
APC PROTECT
APC SW
Q105
2SK879(Y)F
R:7.63V
T:7.50V
AUDIO PROCESSOR
IC301
AK2346
C315 R324
1 AGNDIN 24
TEST
1u 2 AGND 23 150k
RXIN
R325
3 TXIN 22
RXINo
C328 150k
4 TXINo 21
RXLPFo
5 LIMLV 20 390p
RXAF
6 EXTLIMIN 19
RXAFIN
R326
7 MOD 18
EXPOUT
0
8 VSS 17
VDD
R321 C322
9 TCLK 16
XIN
0.015u
10 TDATA 15 220k
XOUT
11 D_IO 14
DIR
12 RDF_FC 13
SCLK
R307
0
LIMITER
C354
R357
0
0.1u
M N
TX DRIVE AMP
R:7.63V
T:7.45V
Q102
L107
RD00HVS1-T113 C123
R120
1.2n
0
6p
R:0.23V
T:2.86V
R126
2.2k
R135
150k (D)
C140
IC101
TA75W01FUF
100p
8
1
OUT1 VCC
7
R130 2
IN1- OUT-B
150k
3 6
(D) IN1+ IN2-
4 5
R131 VEE IN2+
150k
(D)
COMPARATOR
(APC)
R134
(D)
150k
Q107
RT1N141U
T:4.96V
APC SW
L71-0549-15
C210
R208
82k
470p
FM IF
SYSTEM
IC201
TA31136FNG
R207
15k
C329
R329 R210
R:4.87V
3.3k
150k 1u
R330 C330
3.3k
1u
O
TX FINAL AMP
Q103
R150 R151 2SK2595-E
0 0
APC SW
Q109
RT1P441U
C146
1000p
APC SW
Q108
2SK1824-A
R141
PCTV
330k
MCF
XF201
C231
R219
100
0.01u
CF201
L72-0959-05
C213
0.1u
R:4.75V
C219
R216
120k
33p
Q203
2SC4649(N,P)
IF AMP
PCTV
BUSY
RSSI
5T
RX LO1
5R
SP2
RXD/PTT
TXD
5M
MIC_MUTE
VOX
AF_CONT
OPTDET
PTT
SB