Motorola Commercial CM Series Service Information page 76

4-36
RX
IF300
1
C339 C341 C340 C345
2.4p 4.7p 2.4p 3.9p
DNP
C1121 C300
L309
51.p
5.6p
C338 18.08n
L300
10.p
18.08n
UHF1 (403-440MHz) Receiver Front and Back End (Sht 1 of 2)
9V
9V
3V
R346
10.K
3V
5V
5V
Q300
RX_EN
SH300
C349
SH301
SHIELD
120.p
SHIELD
1
1
C328 C370
43.p
24.p
C368
C334 DNP
20.p
CR301 8.2p
C353
82.p
L310
18.08n
FRONT-END SHIELD
9R
Q306
R300
R310
LOC_DIST
10.K
15.K
R345
10.K
R336
220.
C323 C350
120.p
1n
Q301
L301 R331
150.n
100.
R326
2.7K
C351
100n
C343
R347
R330
C326 3.6p
15.
820.
22.n
C342
C346
4.3p 4.7p
Q303
BFS540
L311
18.08n
DNP C355 C331
39.p 10.p
DNP C357
36.p
RX_INJ
UHF 1-25W PCB 8486684Z03 (Rev. B) / Schematics
Q304
R334
430.
C321
120.p
L304
150.n
D305
C327
C347 C344 C329 C335
C348
3.6p 3.6p 3.3p 36.p 10.p 330p
R338
100.
DNP
L312
L313
C330 C358
18.08n
10.p
C333 36.p
C332 10.p
12.p
18.08n
L314
18.08n
C325 L307 C324 L308
120.p 120.p
18.08n 18.08n
C367
C366 C356
8.200p
10.p
15.p
1
TP4
TEST_POINT
TEST_POINT
MIXER SHIELD
T300
XFMR
6 1
L306
470.0n
2
4 3
R340
51.
L302 C354
150.n 82p
U302
T301
XFMR
6 1
2
4 3
R301 SH302
SHIELD
470.
1
1
TP1