Motorola CDM Series Detailed Service Manual page 321

UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists
4.2 Vdc (Rx)
0 Vdc (Tx)
R5301
VSF_UHF_VC0
5.6K
RXSW VSF
C5372
C5371 L5304
R5302
100pF
0.22uF
390nH
10K
NU
C5305 C5306
NU
2pF
L5303
RESONATOR
C5302 C5303 C5304
2
4.3pF 4.3pF 5.6pF
R5303
P2
CR5303
L5302
220nH
TXSW
CR5302
CR5301 R5311
7.5K
L5301
68nH
C5317
C5301
100pF
100pF
NU
2.5 to 10 Vdc
L5311
R5315
VCTRL_UHF_VCO
68nH
0
VCTRL
C5311
CR5311
100pF
C5316
0.1uF
C5325
R5321
4.7uF
VCOMOD_UHF_VCO
VCOMOD
C5323 C5322
1000pF 100pF
NU
NU
VSF
4.5 Vdc
C5308
0.1uF
C5355 C5352
2.2uF 0.1uF
L5305
390nH
C5309
R5305
100pF
10
Q5301
1
TX_IADJ
2
2.3 Vdc (Rx) RX_IADJ
3
0 Vdc (Tx) SUPER_FLTR
4
COLL_RFIN
5
RX_BASE
6
RX_EMITTER
C5307
16
100pF
TX_BASE
30
15
TX_EMITTER
20
FLIP_IN
19
TRB_IN
R5304
150
Q5311
0 Vdc (Rx)
4.5 Vdc (Tx)
0 Vdc (Rx)
R5381
1.9 Vdc (Tx)
TRB_UHF_VCO
470
L5313
390nH
C5318 C5381
R5312
0.22uF
0.1uF
7.5K
TXSW
C5314
4.5 Vdc (Tx)
3pF R5314
C5315
220
C5312 100pF
15pF
L5312
RESONATOR
C5313 R5313
30
NU
2
P2
C5321
1pF
4.5 Vdc
R5322
56K 6.8K
VSF
R5323
C5324
10K
3pF
NU
CR5321
VCOBIAS_2_UHF_VCO
VCOBIAS_2
R5346
10K
C5375
5V
NU
5V_UHF_VCO
C5351 C5354
R5361 C5353
100pF 2.2uF
180 0.1uF
L5331
33nH
C5332
R5332
C5361
C5362
0.1uF
22K
100pF L5361 0.22uF
NU
NU
390nH NU
R5360
270
C5364 R5362
5.6pF 10 TXINJ_UHF_VCO
2.58 Vdc (Tx)
TXINJ
10 L5371
C5331
TX_OUT
4 dBn (Tx) 68nH 5.6pF
8
RX_OUT
4.5 Vdc (Rx)
R5331
C5373
12
22
NU
PRESC_OUT
C5363
NU
7
RX_SWITCH
13
TX_SWITCH
C5374
NU
U5301
50U54
R5363
1K
VSF
0 Vdc (Rx)
4.5 Vdc (Tx)
L5362
PRESC_UHF_VCO
TRB
39nH
4.2 Vdc (Rx)
C5365
0 Vdc (Tx)
3.3pF
RXSW
0 Vdc (Rx)
C5382 C5383
100pF 100pF
NU NU
Q5333
47K
47K
4.5 Vdc (Rx)
10K 0 Vdc (Tx)
R5341
0
R5337
C5336
0
.022uF
NU
L5333
R5342
390nH
2.2K
L5332 R5336
15nH 1K
NU NU
C5333
R5339
51pF
22 C5335
NU
100pF
NU
Q5332
R5338
220
R5343
NU
1K
Q5331
NU
R5344
R5347 10
0
R5340
220
R5333
10K NU
R5334
NU
0
NU
C5334
R5335
10 51pF
NU
NU
PRESC
SH5302 SH5301
SHIELD SHIELD
1
GND
UHF Band 2 (450–512/527 MHz) 1–25 W Voltage Controlled Oscillator
Section 6: 4-7
C5337
51pF RXINJ_UHF_VCO
RXINJ
>14 dBn (Rx)
C5339
R5345
NU
NU
C5338
51pF
1
ZMY0130674-O
6881091C63-F