Kenwood TK-3212L Service Manual page 31

P
TX-RX UNIT (X57-7130-XX)
TX DRIVE AMP
Q102
R:7.61V
T:1.36V
2SK2596-E
T:7.26V
L103 L104
8.2n 8.2n
5T
DCSW
APCSW
B
5R
C241
R240
470p 0
RF BPF TUNING
TX_W/N
DTMF
R354 R355
C354
10k
10k 0.1u
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
0.1u
10k
RB706F-40
DAN222
AFCONT
OPTDET
RXD/PTT
TXD
PCTV
MIC_MUTE
QT/DQT_IN
PTTSW
SB
X57-7130-XX
-12
-13 K2,M2
X57-7130-XX
-12
-13 K2,M2
Q
SCHEMATIC DIAGRAM
Note : The components marked with a dot (
TX FINAL AMP
Q103
2SK3476-F
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)F
APC SW
R:7.61V
T:7.39V
R449 R450
* *
C246
* * C248 * C252 C253
*
(B) (B) (B)
(B)
PCTV
R:0.3V(MUTE ON)
7.3V(MUTE OFF)
T:0.3V
C334
0.1u
2SA1362-F(GR)
7.52V
DC SW
R334
47k
C329
1u
C330
C331
1u
0.1u
MIC AGC
Q302
2SC4919
C333
R332
15k 0.1u
D210 L105 L211 L212 L214 L228
K,M HVC355B 15n 8.2n 8.2n 8.2n 8.2n
NO 22n NO 6.8n 6.8n 6.8n
C244 C245 C246 C247 C248 C249 C250
K,M 3p 22p 1p 470p 2p 5p 22p
NO NO NO NO NO 3p 18p
R
R456
*
STRIP LINE
C152
R137
0
5T
R135
150k(D)
C140
IC101
TA75W01FUF
100p
1
oUT1
R130
2
IN1- oUT-B
150k(D)
3
IN1+
4
R131 VEE
150k(D)
COMPARATOR
(APC)
R134
150k(D)
APCSW
B
L410
Q205
3SK318
R:4.9V
R:4.98V
C259 R249
C266
470p
22
470p
RF AMP
R:2.046V
R:0.96V
PCTV
D203,204
RF BPF TUNING
R343
470k
IC302
TA7368FG
1
10
Q304
NC1 PoUT
2 9
VCC PW-GND
3 8
NC2
PRE-GND
R336 4
7
C338 100p
VIN PHASE
C339
1k 5 6
R337
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
L229 R241 R449 R450 R456 C145 C151 C156
8.2n 1.0M NO NO NO 16p NO 6p
6.8n NO 0 0 0 18p 7p 3.5p
C252 C253 C255 C257 C267 C268 C273
2p 2p 22p 3.5p 3.5p 22p 22p
1.5p 1p 18p 5p 4.5p 18p 18p
S
TK-3212L
●
) are parts of layer 1.
D103,122
ANT SW
D122
C160 C163 C166
* *
HVC131
3p
D103 C158 L224 L225 L226
4T 4T 4T
20p 100p
HVC131
L223 R145 R147
* C169
4T
0
0
D104,106
ANT SW
APC SW
Q109
RT1P441U
C146
8
VCC
1000p
7
6
IN2-
APC SW
5
Q108
IN2+
2SK1824-A
R141
100k
R142
0
Q107
RT1N141U
APC SW
C269 C272
R255
0
2p 2p
(B)
(B)
C275
*
(B)
D205,206
RF BPF TUNING
SP MUTE SW
Q306
2SK3577-A
C345
100u6.3
SP MUTE SW
Q316
2SK3577-A
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 1p
4p 3p 1.5p 6p 6p 1.5p 0.3p
C274 C275 C276 C444 C445
2p 2p 2.5p 7p 7p
1.5p 2.5p 2p NO 20p
T
1
ANT
CN13
2
3
4
5
SP
J301
E11-0707-05
MIC
MICIN
5MS
AE
TXD
NC
SPO
SPI
6
MIC1
C169
5p
9p
7
31
X57-713 4/4