Motorola PRO3150 Manual De Servicio página 193

C281
R245
100pF
240
C276
2.2uF
L281 L273
390nH 18nH
C272 C273
1.1pF 0.1uF
L271
27nH
RX_INJ
TX_INJ
PRESC
C271
1.0pF
SH241 SH242
SHIELD SHIELD
1 1
VCO TOP SHIELD VCO BOTTOM SHIELD
Q260
3
5V
2 47K
AUX3
C297
47K
.01uF
1
VSF
C286
4.6V
0.1uF
18 14
10 1
TX_OUT TX_IADJ
8 2
RX_OUT RX_IADJ
3
SUPER_FLTR
12 4
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
C289
100pF
Q261
4 3
10K
DD
2
47K
4.7K
R260
47K
1K
4 1
10K
4.7K
Figura 4-85. Diagrama esquemático del oscilador controlado por voltaje de rango 2 de UHF (450-527 MHz) (tarjeta de circuito impreso nº 8485755Z03)
R242
120
RESONATOR
C285
100pF
C246
100pF R241
18
R244
15K
C245
2.7pF
Q241
2
R243
BFQ67W
10K
1
3
L282
2V
390nH
R248
30
R253
C247
7.5K 100pF
Tx_sw
4.6V
R254
8.2K
C254
3.3pF
C253
C255
100pF 1.8pF
L253
RESONATOR
AUX4
R252 R251
270 33 2
L243
C250
4.3pF
3
C242
4.3pF
2
C243
1 4.3pF
CR243 CR242
C244
0.47pF
Rx_sw
VSF CR241
3
C248
1 2
0.1uF
C252
L251
20pF
390nH
C251
CR251
100pF
ZMY0130413-O
4-141
L242
22nH
4V@450MHz
10V@527MHz
L241
390nH
VCTRL
C241
100pF