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A B C D E
TM-271A/271E
TX-RX UNIT (X57-685X-XX)
SCHEMATIC DIAGRAM
1 R414
Q402,403 470
R411
C417
CV
C416
1000p
1000p
R:0.74V
5.6k
CHARGE PUMP RX VCO BUFFER AMP
T:0.62V
R422
D403,404
C430 4.5p Q410
10k
D402 R410 RX VCO
R:6.11V R:0.97V 2SC5108(Y)
Q402 Q405 R:6.17V
HZU5ALL 8.2k R418 R419 R421 L405 CV L406 D404 C426 L408 2SK508NV(K52) C432
2SA1832(GR)
VOTAGE Q403 C454
1k 2.7k 1.5k 270n MA2S304 30p 33n 0.3p
C427
L409
27u
27u
DROPPED R412 2SC4738(GR)
L410
C422
8p
470p
6p
R436
MA2S304
R420
120k
C455
33n
1k
L418
0.047u35
1k
C429
R403
D403
C431
3p
10k
R413
270n
L407
1p
5p
0.1u35
C423
10k
C425
R402 1k
R423
TC401
220
C428
470p
10p
R401 1k
C424
1u16
C452
R435
470p
100
20
19
18
17
16
15
14
13
12
11
C475
C401
C403
C402
C476
1000p
1000p
100p
100p
100p
T/R SW R:7.01V
R429
R
NC5
P
FOUT
NC4
FC
LE
DATA
NC3
CLK
PLL IC
R434
C453
220p
270
0
IC401 Q407 Q408
TCXO
OSCOUT
MB15A02 T:6.8V 2SJ347 KRX102U
R430 L417
OSCIN
X401 KDC PLL SYNTHESIZER
GND
VCC
NC1
NC2
FIN
DO
220 R432
VP
LD
R404 R:6.96V
R431
C448
470p
100k
1k
1
2
3
4
5
6
7
8
9
10
10k
C473
1000p
L401
16.8MHz D405,406 C439
10p
C404
TX VCO
15u6.3
RF AMP T/R SW
1000p
C418
C400
8CL
0.1u