Kenwood TK-3207G Service Manual page 55

K
TK-3207G
TX-RX UNIT (X57-6890-XX)
RF AMP
Q101
T:4.81V
2SK3077F
C107
* R103 *
Q100
2SC4619(P,Q)
RF AMP
R453
22k
TH_DET
DCSW
B
5T
APCSW
OSCIN
SP1
RX LO1
SP2
5R
5C
MOD
RX_W/N
TX_W/N
DTRLOADN
STD
10
TCLK/DTRDO
11
TDATA/DTRCLK
12
DI/O
R306 13
IC301
RDF/FD
AQUA-L
1k 14
SCLK
AUDIO PROCESSOR
15
DIR
16
XIN
EXTLIMIN
C313
C309
120p
82p
R310 R313
C311
390k 100k
AMP3O
1u
C310 R311
12k
0.068u
TXD
PCTV
MIC_MUTE
QT/DQT_IN
BUSY
RSSI
AF_CONT
OPTDET
PTT
5M
SB
X57-689 3/4
L
SCHEMATIC DIAGRAM / 原理图
T:4.96V
L103
C112 L104
R112 R111
8.2n
8.2n
7p 0 0
T:4.96V
APC SW
Q104
DTC114EE
APC PROTECT
APC SW
Q105
2SK879(Y)F
R:7.61V
T:7.39V
C320
R316
120k
0.01u
R319
56k
C312
12p
C315 R322
180k
1u
R323
32
56k
31 R324
R329
30 100k 82k
29 R325
28 C328 100k
27 390p
26 C322
R321
220k
0.015u
R326
C331
C325 0 R331
0.1u 150k
0.1u
C326
1000p
R330
3.3k
C316
R314
10k 0.1u
M
R:7.61V
T:7.26V
R120
TX DRIVE AMP *
T:1.36V
Q102
* C123 * L107
2SK2596
T:2.5V(H)
1.97V(L)
R126
2.2k
R135
150k (D)
C140
IC101
TA75W01FUF
100p
1
oUT1
VCC
R130
2
IN1-
oUT-B
150k
3
(D) IN1+ IN2-
4
R131 VEE IN2+
150k
(D)
COMPARATOR
(APC)
R134
(D)
150k
Q107
DTC114EE
APC SW
R:5.01V
T:0V
C210
R208
82k 470p
W/N SW/TX
FM IF
Q301
SYSTEM
DTA114EE
IC201
TA31136FNG
C329
R210
3.3k
1u
W/N SW/RX
Q202
DTA144EE
D405
LIMITER of
W:0.015V
QT ENCODE
N:4.94V
DEVIATION
RXAFO RXAFI
C330 R446
0
1u
MICO
MICI
DETECTOR
D302
R445
RB706F-40
R318
C317
0
1.2k
0.1u
MIC_MUTE
N O
TX FINAL AMP
Q103
R123
2SK3476
0
APC SW
Q109
DTA144EE
C146
8
7 1000p
6
APC SW
5
Q108
2SK1824-A
R141
100k
MCF
XF201
L71-0619-05
38.85 MHz
C231
R219
oUT IN
2 1
560
0.01u
CF201
L72-0973-05
450 kHz
C213
0.1u
R:4.74V
C219
R216
120k
33p
IF AMP
Q203
2SC4649(N,P)
R211
3.3k
ISOLATION
MIC AGC
D303
Q302
DAN222
2SC4919
R328
10k
C333
R332
15k 0.1u
R360
0
PCTV
BUSY
RSSI
PCTV
5T
RX LO1
5R
PCTV
SP2
TXD
AF_CONT
OPTDET
PTT
5M
SB