Kenwood TK-3212 Service Manual page 41

P
TX-RX UNIT (X57-7130-XX)
TX DRIVE AMP
Q102 R:7.61V
T:1.36V
2SK2596 T:7.26V
L103 L104
8.2n
8.2n
5T
DCSW
APCSW
B
5R
C241 R240
0
470p
TX_W/N
R354 R355 C354
10k 0.1u
10k
5M
W/N SW/TX
Q301
RT1P141U
R322 180k
LIMLV
R323 56k
C328 390p
R324 100k
RXIN
R329
R325 100k
RXINO
82k
FILTERO
R321
C322 0.015u
EXPOUT
220k
R326 0
RXAFIN
RXAF
R330
3.3k
R331
C325 0.1u
DTRAIN
C326 1000p
150k
DETECTOR ISOLATION
D302 D303
R318
C317
R328
1.2k
10k
0.1u
RB706F-40 DAN222
R332
AFCONT
OPTDET
RXD/PTT
TXD
PCTV
MIC_MUTE
QT/DQT_IN
PTTSW
SB
X57-7130-XX D210 L105
-10 TK-3212 K,M HVC355B 15n
-11 TK-3212 K2,M2 NO 22n
-21 TK-3217 M HVC355B 15n
X57-7130-XX C244 C245
-10 TK-3212 K,M 3p 22p
-11 TK-3212 K2,M2 NO NO
-21 TK-3217 M NO NO
Q
SCHEMATIC DIAGRAM
Note : The components marked with a dot (
TX FINAL AMP
Q103
2SK3476
C123 L107
R123
1.2n
0
33p(G)
T:2.5V(H)
1.97V(L)
APC PROTECT
R126
2.2k
APC SW
Q104
RT1N141U
Q105
2SK879(Y)
APC SW
R:7.61V
T:7.39V
R449 * R450
*
C246
* C248 C252 * C253
* *
(B) (B) (B)
(B)
RF BPF TUNING
R:0.3V(MUTE ON)
7.3V(MUTE OFF)
T:0.3V
C334
0.1u
Q304
2SA1362(GR)
7.52V
DC SW
R334
47k
C329
1u
C330
C331
1u
0.1u
MIC AGC
Q302
2SC4919
C333
15k
0.1u
L211 L212 L214 L228 L229 L230 R241
8.2n 8.2n 8.2n 8.2n 8.2n 56n 1.0M
NO 6.8n 6.8n 6.8n 6.8n 56n NO
NO 8.2n 8.2n 8.2n 8.2n 39n 1.0M
C246 C247 C248 C249 C250 C252 C253 C255
1p 470p 2p 5p 22p 2p 2p 22p
NO NO NO 3p 18p 1.5p 1p 18p
NO 470p NO 2.5p 22p 1p 1.5p 22p
R
TK-3212/3217
* R456
STRIP LINE
C152
R137
0
20p
R135
150k(D)
C140
IC101
TA75W01FU
100p
1
OUT1
R130 2
IN1- OUT-B
150k(D) 3
IN1+
4
VEE
R131
150k(D)
COMPARATOR
(APC)
R134
150k(D)
L410
Q205
3SK318
R:4.9V
R:4.98V
C259 R249
C266
470p
22
470p
RF AMP
R:2.046V
R:0.96V
D203,204
RF BPF TUNING
R343
IC302 470k
TA7368F
10
1
1
PoUT
2 9
VCC
PW-GND
8
3
3
PRE-GND
R336
4 C338 100p
7
VIN
PHASE
1k C339
R337
5 6
RIPPLE
NF
150 10u6.3
AF AMP
C340
R:7.3V(MUTE ON) 0.1u
Q303 0.3V(MUTE OFF)
RT1N441U
T:7.3V
DC SW/SP MUTE DC SW/SP MUTE
R338
R341
R346
R344
L301
R449 R450 R456 C132 C142 C145 C151 C156
NO NO NO 27p NO 16p NO 6p
0 0 0 27p NO 18p 7p 3.5p
0 0 NO 24p 7p 18p NO 4p
C257 C267 C268 C273 C274 C275 C276
3.5p 3.5p 22p 22p 2p 2p 2.5p
5p 4.5p 18p 18p 1.5p 2.5p 2p
4.5p 4p 22p 22p 1p 3p 4p
S
●
) are parts of layer1.
D103,122
ANT SW
D122
C160 C163 * C166
*
HVC131
3p
D103 C158
L224 L225 L226
4T
4T 4T
HVC131 100p
L223 R147 * C169
R145
4T
0 0
D104,106
ANT SW
APC SW
Q109
RT1P441U
C146
8
VCC
7
1000p
6
IN2-
APC SW
5
Q108
IN2+
2SK1824
R141
100k
R142
0
Q107
RT1N141U
APC SW
R255 C269 C272
0
2p 2p
(B) (B)
C275
*
(B)
D205,206
RF BPF TUNING
SP MUTE SW
Q306
CPH3413 C345
100u6.3
SP MUTE SW
Q316
CPH3413
Q305
RT1N441U
R345
2.2k
PTT/RXD
10k
100
OPTDET
100
1k
C157 C159 C160 C161 C164 C166 C168
2.5p 2p 2p 5p 5p 0.75p NO
4p 3p 1.5p 6p 6p 1.5p 0.3p
1p 2p 2p 5p 5p 0.75p NO
C293 C444 C445
NO 7p 7p
NO NO 20p
7p NO NO
T
1
ANT
CN13
2
3
4
5
SP
J301
E11-0457-05
MIC
MICIN
5MS
AE
TXD
NC
SPO
SPI
6
MIC1
C169
5p
9p
6p
7
39
X57-713 4/4