Kenwood TK-3302 Service Manual page 37

P
X57-7582-XX C142 C145
-71 E,T 43p NO
-72 E3 47p 36p
X57-7582-XX L204 L210
-71 E,T 150n 270n
-72 E3 82n 150n
TX-RX UNIT (X57-7582-XX)
STRIP LINE
5T
5R
BPF
R:4.88V
*
L204
Q203
3SK318
MIXER
* C231
R:0.34V R:1.75V
* R215
PCTV
SB
DC SW
Q313
2SB1694
7.54V
AFVOLOUT
R377
47k
Q312
RT1N441U
DC SW
MIC
C369
0.1u
D308,309
RECTIFICATION
C370
0.1u
PTT
OPTDET
TXD
MIC_MUTE
5M SB
AF_CONT
5M
SB
Note : The components marked with a dot (
Q
SCHEMATIC DIAGRAM
C146 C155 C161 C162 C164 C166 C172 C174 C176
12p NO 1p 2p NO 6p 5p 6p 6p
NO 0.3p 3p NO 3p 7p 1p 10p 10p
R215 R216 R219 R220 R222 R223 R224 R225 R226
1k 100 56k 47 39 100 NO 68k 22
2.2k 82 47k 0 100 82 680k 56k 0
*
R137 C166
0
CN2
R138
150
R:4.88V
T:0V
R:1.75V
*
C234 R220 C238 * C240
1p
470p
D201-203
RF BPF TUNING
R:0.2V(MUTE ON)
7.4V(MUTE OFF)
T:0.2V
C396
R379
1k
0.1u
R:7.51V(MUTE ON)
0.16V(MUTE OFF)
T:7.36V
C383
0.1u
R370
D308
KDR731
1k
D309
KDR731
R371
8.2k
Q308
KTC4075E(Y,GR)
RECTIFICATION
•
) are parts of layer 1.
R
C177 C178 C231 C235 C236 C237 C240 C242
2.5p 4p 470p NO 4.5p 22p 6p 6p
1p 6p 1000p 0.75p 7p 27p 4p 8p
C173
ANT SW
0.5p
D103 C170
L113
4T
HSC277 100p
L112
4T
ANT SW
R:4.88V
L208
R:4.54V
R:4.78V
*
C245 C247 C250 *
R222
1p 470p
Q204
3SK318
R:0.73V
Q204
LOW NOISE AMP
R380
470k
AUDIO AMP
IC309
TA7368FG
1 NC1 10
PoUT
2 9
VCC
PW-GND
8
3 NC2
PRE-GND
4 VIN 7
C399 100p
PHASE
6
5
RIPPLE
NF
R381
C400
150 10u
C402
0.1u
Q314
RT1N441U
MUTE SW
MIC
C392 L305
R374
15k 0.047u
Q310
2SC4116(GR)F
MIC MUTE
MIC MUTE
Q311
2SA1586(Y,GR)F
S
TK-3302
C244 C247 C248 C249 C257 C261 C263 C264 C265
22p 6p 22p 4.5p 3.5p 3p 1p 4.5p 3p
27p 4p 27p 8p 8p 2.5p 6p 2.5p 5p
C175 *
C177
1p
L114 L115
4T 4T
R140
0
ANT SW
R:1.94V
*
C256 * C259 C261
R226
3p
470p
PCTV
D204,205
RF BPF TUNING
SB
MUTE SW
Q315
2SK3577-A
C404
100u6.3
MUTE SW
Q316
2SK3577-A
R388
100
CP304
RK75HA1J102J
R385
100
T
C266 C411
1
5p 470p
3.5p NO
CN13
ANT
2
3
4
* C264
5
6
J301
PTT/RXD
MIC
MICIN
OPTDET
5M
AE
TXD
NC
SPO
SPI
MIC301
7
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