Kenwood TK-3230 Service Manual page 41

P
TX-RX UNIT (X57-7330-10)
RF SW T:0.751V
L411
D6
C101 R469
3.3n 0
1.5p
HSC277
RF SW
D7
3T
HSC277
R:0.754V
THP
PC
3M
3T
3R
R:0.7V
R211
2.2k
1st IF
38.85MHz
XF200
C219
R234 R215 R217
0 560 560
0.01u
R468
3R
0
B
Note : The components marked with a dot (
Q
SCHEMATIC DIAGRAM /
TX PRE-DRIVE
Q101
2SC5092-F
T:0.78V T:2.77V T:0.8V
L102
C113
R470 R471
0 0 15n
15p
DAC
IC100
BH2219FVM
8 1 R131
LD Ao1
7 2
CLK Ao2
6 3
DI TESTMoNI
5 4
GND VCC
2nd LOCAL
C232
33p
R:2.84V
L208
C228
R214
330k 220n
0.01u
Q202
2SC4082
TRIPLER
IF
R:2.928V
MIXER
L211
C231
Q203
270n 3SK318
0.01u
C243
47p
C236
24p
R:1.07V
•
) are parts of layer 1.
R
原理图
TX DRIVE TX FINAL
Q103
RQA0002DNS
RQA0004PXDQS
T:3.793V T:0.593V
L105
C120
3.3n
470p
R:0V
T:1.2V(Hi)
0.846V(Low)
470
38.4 MHz
C235
33p
L210
220n
C244 C247 R484
0
470p 470p 4p 4p
R:2.93V
R:1.658V
RF AMP
R224 Q204
3SK294-FP
0
C252
R:0.254V
S
TK-3230
Q104
R:3.776V
ANTENNA SW
C134
L106 R128
2.2n 0
100p
B
3T
C254 L219 L221 L222
470p 3T 3T 3T
B
R:0V
T:0.819V
L220
3T
L218
L79-1807-05
L215 R231 C253 C259
47p 39n 0 47p 470p
D200,201
ANTENNA SW
T
1
D101
HVC131
R:1.622V
2
3
ANT
4
5
6
7
B
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