Motorola CDM Series Detailed Service Manual page 426

Section 7 : 4-74
MOSBIAS_2_PA_1
MOSBIAS_2
18 Vpp
MOSBIAS_3_PA_1
MOSBIAS_3
R1469
0
9V3
R1468
2.2K
FN0:NP R1467
39K
Vint
FN0:NP
R1466
39K
FN0:NP
VCNTRL
Low Band Range 3 (42–50 MHz) Power Amplifier Sheet 1 of 2
(for PCB Boards 8485908Z02, 8485908Z04 & 8485908Z05)
6881091C63-F
MOSBIAS_2_SW
1.8V-2.1V
TP1402
R1465 R1407
DEVICE NEAR INSIDE OF RADIO
3.3K 10K
C1425
C1421
R1424
C1423
.01uF
27K .01uF
FN0:NP
1uF
R1405
51
Q1403
D
R1415 10 R1419 R1423
GND1
C1419
FN0:NP 10 10 GND2
G
R1413 R1417 R1421
.01uF
10
10 10
R1412 R1416 R1420 Q1402
10
C1420
10 10
FN0:NP
G
R1414 R1418 R1422 GND2
.01uF
GND1
10 10 10
R1404
51
MOSBIAS_3_SW
1.8V-2.1V
TP1403
DEVICE NEAR OUTSIDE OF RADIO
R1464 R1406
3.3K 10K
C1426 C1422
C1424
R1425
.01uF
.01uF
27K 1uF
FN0:NP
C1484
R1478 2200pF
10K
PASUPVLTG
R1477
6 8
PASUPVLTG
7
R1472 10K MC33072
3.3K
5
4
U1402-2
R1475
10
R1479
R1473 R1474
U_PREDRIVER
10 10 3.3K
R1476
R1470
10
2.4K
FN0:NP
R1483
U_DRIVER
U1402-1
240
FN0:NP
4
R1471
R1443
3 C1460
MC33072 1K
1
0
L1402
2 8
C1402
4.7uH
0.1uF
R1482
L1401
.01uF C1403
0 6.8nH
6.2pF
FN0:NP
FN0:NP
TXINJ_PA_1 L1403
16 RFIN 6
4.7uH
RFOUT1
1 7
VCNTRL RFOUT2
TXINJ 2.5 Vpp
C1401
14 2
VD1 VG1
.01uF
11 3
10 Vpp
G2 VG2
C1467
U1401
R1440 68pF
8 NC1
30C65
9
100 NC2
10
NC3
C1406
R1441
C1473 15 NC4
C1474
C1405 330pF
10K R1445
0.1uF .01uF
FN0:NP
6.2K
.01uF
FN0:NP
R1446
5.6K
FN0:NP
C1463
C1464 C1465 C1466 R1454
R1451 R1453
180 180 1uF .01uF 180
1uF .01uF
PASUPVLTG_PA_1
PASUPVLTG
C1435 C1436
C1458
1uF .01uF
10uF
R1409
.01
C1431 C1433
C1459
.01uF 1uF
10uF
L1413 FSWB
88.470nH
25 Vpp
C1427 C1429 C1477
C1439
C1437
240pF 240pF 300pF L1425 L1415 470pF
470pF
18nH 18nH
L1416
18nH
C1428 C1430 C1478 L1426
C1438
18nH
240pF 240pF 300pF
470pF
25 Vpp
L1414
88.470nH
C1432
C1434 C1462
1uF .01uF 10uF
Q1404
U_DRIVER
FN0:NP 3.7V-3.9V
TP1401
R1480 R1463
R1484
C1486
PCIC_MOSBIAS_1
1K
0.1uF
27K
12K
FSWB2
C1472
U_PREDRIVER
MOSBIAS_1_SW
0.1uF
C1410 C1475 C1414
0.1uF 1uF
E1401 .01uF
R1447
R1448
C1404
.01uF 150K
0
C1482 C1468 C1485
FN0:NP
1uF .01uF .01uF
R1450
820
R1444
220
L1404
C1461
180nH
C1412 .01uF
C1409
R1449 R1458 R1459
R1402
68pF 270pF 390
390 390
390
FN0:NP C1413
R1457
5 Vpp
10
.01uF
L1405
C1408
120nH
C1407 330pF
FN0:NP
.01uF
FN0:NP
R1455
180
Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists
9T1
PASUPVLTG
R1410
130
C1456
L1420
51pF
172.891nH
L1419
C1445
.01uF 27uH
FN0:NP
C1447
L1421
137.876nH
470pF
D1401 C1450
190 Vpp
C1448
C1446 3pF
C1449
24pF
110pF
470pF
C1443
C1444
130pF
130pF
C1481 C1479
82pF
220pF
L1417 L1418
18nH 66.389nH
90 Vpp
Peak-to-Peak Voltages (Vpp) are typical values as
C1480 C1441 C1442
C1440
could be measured with an oscilloscope under
82pF 220pF 120pF
470pF
the following conditions:
1.) Battery Voltage = 13.6 Volts
2.) Test Channel 11, i.e. High Power @ 46.125 MHz
R1460
C1471
C1470
0.1
.01uF
1uF
1%
C1415 C1469
E1403 0.1uF 1uF
L1406
250.974nH
C1476
C1417
0.1uF 430pF
20 Vpp
Q1401 C1416 C1418 L1424
L1408
30pF 510pF 36.54nH
120nH
FN0:NP
FN0:NP FN0:NP
M1401
POS
HEATSINK
C1457
RXIN_PA_1
.01uF
D1402
L1422 L1423
81.930nH
115.581nH
C1452 C1454
180
24pF 33pF C1455
C1451 R14
C1453 16pF
180pF 10K
100pF
FL0830695O