Motorola PRO3150 Manual De Servicio página 103

C281
R245
100pF
240
C276
2.2uF
L281 L273
390nH 33nH
C272
NU
L271
68nH
RX_INJ
TX_INJ
C271
NU
SH241 SH242
SHIELD SHIELD
1 1
if
VCO TOP SHIELD VCO BOTTOM SHIELD
DUMMY
5V
AUX3
C297
.01uF
VSF
C286
0.1uF
C273
0.1uF
18 14
10
TX_OUT TX_IADJ
8
RX_OUT RX_IADJ
SUPER_FLTR
12
PRESC
PRESC_OUT COLL_RFIN
U241
RX_BASE
7
50U54
Rx_sw
RX_SWITCH RX_EMITTER
13
Tx_sw
TX_SWITCH TX_BASE
TX_EMITTER
FLIP_IN
TRB_IN
17 11 9
if
Q261
4 3
DD
10K
47K
2
4.7K
Q260
R260
47K
1K
3 4 1
2
1
Figura 4-34. Diagrama esquemático del oscilador controlado por voltaje de rango 1 de UHF (403-470 MHz) (tarjeta de circuito impreso nº 8480672Z04)
R242
200
C285
100pF
C246
100pF
R244
12K
1
2
3
2 Q241
4
BFQ67W
5
6 1
16
3
L282
15
390nH
20
19
R253
7.5K
Tx_sw
R254
7.5K
C289
C254
100pF
3.6pF
C255
L253
100pF
RESONATOR
AUX4
R251
R252
18 2
330
P2
C250
L243
7.5pF
RESONATOR
3
R241
18
C242
7.5pF
2
C243
1
7.5pF
C245
2.4pF
CR243
R243 C244
10K
2pF
Rx_sw
VSF CR241
R248
30
C247 C248
100pF 0.1uF
C252
L251
10pF
33nH
C253
CR251
1.8pF
P1 1
P3
3
4-51
L242
220nH
CR242
L241
390nH
VCTRL
C241
100pF
1 2
C251
100pF
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