Kenwood TK-2212 Service Manual page 42

P
TX-RX UNIT (X57-7120-XX)
TX DRIVE AMP
Q103
T:1.88V
2SK2596
C110 L104
27n
1000p
5T
DCSW
APCSW
B
RX LO1
5R
BPF
R:4.98V
L206 MIXER
R219
180n
Q204
3SK318
560
R220
C243
R:2.48V
560
1000p
C238
R:0.99V
12p
CN201
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
0
R326
RXAFIN
RXAF
R330
3.3k
R331
C325 0.1u
DTRAIN
C326 1000p
39k
MIC AGC
DETECTOR ISOLATION
D302 D303
R318
2SC4919
C317
R328
1.2k
10k
0.1u
RB706F-40 MC2858
R332
15k
AFCONT
OPTDET
RXD/PTT
TXD
PCTV
MIC_MUTE
QT/DQT_IN
PTTSW
SB
X57-7120-XX D203 D204 D205
TK-2212 K,M
-10 1SV305 1SV305 1SV305
TK-2217 M
-21 TK-2217 M3 HVC350B HVC350B HVC350B
X57-7120-XX R239 C119 C130 C136
TK-2212 K,M
-10 47 27p 10p 27p
TK-2217 M
-21 TK-2217 M3 0 NO NO 12p
Q
SCHEMATIC DIAGRAM
Note : The components marked with a dot (
TX FINAL AMP
R:7.68V Q106
T:7.30V 2SK2595
L107
R120 C120 *
0 1000p
T:2.7V(H)
1.99V(L)
APC PROTECT
R126
2.2k
APC SW
Q104
RT1N141U
Q105
2SK879(Y)
APC SW
R:2.48V
C245 R227 R291 * C250 C253
*
0 0
470p (B) (B)
RF BPF TUNING
R:0.3V(MUTE ON)
7.3V(MUTE OFF)
T:0.3V
C334
0.1u
Q304
R:7.52V
2SA1362(GR)
T:7.31V
DC SW
R334
47k
C329
1u
C330
C331
1u
0.1u
Q302
C333
0.1u
D206 L107 L110 L114 L115 L116
1SV305 27n 56n L34-4573-05 L34-4573-05 L34-4576-05
HVC350B 22n 39n NO L34-4574-05 NO
C139 C141 C142 C144 C149 C150 C153 C154 C155
68p 22p 15p 82p 22p 22p 10p 10p 18p
36p NO 12p 150p 11p 10p 8p 5p 13p
R
TK-2212/2217
* L121
5T
L113
L34-4563-05 * C144
* L114 * L115
5T
3T
3T
R135 150k(D)
C140
IC101
TA75W01FU
100p
1
OUT1 VCC
R130 2
IN1- OUT-B
150k(D) 3
IN1+ IN2-
4
VEE IN2+
R131
150k(D)
COMPARATOR
(APC)
R134
150k(D)
RF AMP
Q205
R:4.8V 3SK318
R:4.92V
R231
R239 C263
*
47
R:0.75V
10p
R:1.76V
D203,204
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
100
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
L117 L118 L121 L122 L123
L34-4575-05 L34-4567-05 NO NO NO
NO NO L34-4563-05 L34-4574-05 L34-4574-05 L34-4566-05
C156 C157 C158 C159 C161 C244 C247 C248
12p 15p 22p 7p NO 4p 4p 27p
6p 13p 10p 3.5p 4p 2p 1p 30p
S
●
) are parts of layer1.
L123 L124
* *
ANT SW
7T
7T
D103
* L117 * L118 L119
HVC131
7T 7T 6T
D104 C151 * C154 C156 C159
* *
1000p
HVC131
ANT SW
L110 C160
*
33p
D105-107
ANT SW
APC SW
Q109
RT1P441U
C146
8
7
1000p
6
APC SW
5
Q108
2SK1824
R141
100k
R142
0
Q107
RT1N141U
APC SW
* C267 * C268
R240
0 (B) (B)
C271
11p
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
MICIN
OPTDET
100
1k
L124 L207 L209 L211 L213 L214 L255
NO 150n 56n 56n 56n 47n
100n 33n 39n 33n 27n
C250 C253 C254 C255 C264 C267 C268 C270 C272
4p 4.5p 27p 4.5p 4p 3p 3p 4p NO
2p 1.5p 30p 0.5p 3p 1.5p 2p 1p 7p
T
1
ANT
CN13
2
3
4
5
SP
J301
E11-0457-05
MIC
5MS
AE
TXD
NC
SPO
SPI
6
MIC1
NO
39n
7
39
X57-712 4/4