Motorola PRO3150 Manual De Servicio página 85

C281
R245
100pF
240
C276
2.2uF
L273
L281
390nH
33nH
C272
NU
L271
68nH
RX_INJ
TX_INJ
C271
NU
SH241 SH242
SHIELD SHIELD
1 1
if if
VCO TOP SHIELD VCO BOTTOM SHIELD
DUMMY
3
5V
2
AUX3
C297
.01uF
1
VSF
C286
0.1uF
C273
0.1uF
18 14
10 1
TX_OUT TX_IADJ
8 2
RX_OUT RX_IADJ
3
SUPER_FLTR
12 4
PRESC
PRESC_OUT COLL_RFIN
5
U241
RX_BASE
7 6
50U54
Rx_sw
RX_SWITCH RX_EMITTER
13 16
Tx_sw
TX_SWITCH TX_BASE
15
TX_EMITTER
20
FLIP_IN
19
TRB_IN
17 11 9
Q261
4 3
DD
10K
47K 2
4.7K
Q260
R260
47K
1K
4 1
Figura 4-25b. Diagrama esquemático del oscilador controlado por voltaje de rango 1 de UHF (403-470 MHz) (tarjeta de circuito impreso nº 8480672Z01)
R242
200
C285
100pF
RESONATOR
C246
R241
100pF
18
R244
12K
C245
2.4pF
2 Q241
R243
BFQ67W
10K
1
3
L282
390nH
R248
30
R253
7.5K
Tx_sw
R254
7.5K
C289
C254
100pF
3.6pF
C255
P1 1
L253
100pF
RESONATOR
AUX4
R251
R252
2
18
330
P2
P3
3
C250
L243
7.5pF
3
C242
7.5pF
2
C243
1
7.5pF
CR243 CR242
C244
2pF
Rx_sw
VSF CR241
1 2
C247 C248
100pF 0.1uF
C252
L251
10pF
33nH
C251
C253
CR251
1.8pF 100pF
ZMY0130318-D
4-33
L242
220nH
L241
390nH
VCTRL
C241
100pF