Motorola 6864115B62-C Detailed Service Manual page 405

LB Range3, 25-60W PCB 8485908Z03 / Schematics
MOSBIAS_2_SW
1.8V-2.1V
TP1402
MOSBIAS_2_PA_1
R1465
MOSBIAS_2
3.3K
C1425
R1424
27K
1uF
R1419
R1415 10
FN0:NP
10
R1413
R1417
10 10
18 Vpp
R1412 10 R1416
10
FN0:NP
R1414 R1418
10 10
MOSBIAS_3_SW
1.8V-2.1V
TP1403
MOSBIAS_3_PA_1
R1464
MOSBIAS_3
3.3K
C1426
R1425
27K 1uF
R1469
0
9V3 U_PREDRIVER
R1470
2.4K
R1468
FN0:NP
2.2K
FN0:NP R1467 U1402-1
39K FN0:NP
4
Vint
R1471
3
FN0:NP MC33072
1
0
2 8
R1482
0
R1466
TXINJ_PA_1
39K
FN0:NP
TXINJ 2.5 Vpp
C1401
.01uF
VCNTRL R1440
100
C1473
C1474
0.1uF .01uF
C1463
C1464
1uF .01uF
PASUPVLTG
R1407
DEVICE NEAR INSIDE OF RADIO
10K
C1421 L1413
C1423
.01uF
88.470nH
.01uF
FN0:NP
R1405
51
Q1403
D
R1423
GND1
C1419
10
GND2
G
C1427 C1429
R1421
.01uF
240pF 240pF
10
R1420 Q1402
C1428 C1430
C1420
10
240pF 240pF
G
R1422 GND2
.01uF
GND1
10
R1404
51
L1414
88.470nH
DEVICE NEAR OUTSIDE OF RADIO
R1406
10K
C1422
C1424
.01uF
.01uF
FN0:NP
C1484
R1478 2200pF
Q1404
FN0:NP
10K
PASUPVLTG
R1477
6 8
PASUPVLTG
7 R1484
C1486
R1472 10K 3.3K MC33072
1K
5 0.1uF
4
U1402-2
R1475
10 R1479
R1473 R1474
10 10 3.3K
R1476
10
C1410
0.1uF
R1483
U_DRIVER
240
E1401
R1443
C1460
C1404
1K
.01uF
L1402
C1402 4.7uH
0.1uF
L1401
.01uF
C1403
6.8nH
6.2pF
FN0:NP
FN0:NP
L1403 R1444
16 RFIN 6 220
4.7uH
RFOUT1
1 7
VCNTRL RFOUT2 L1404
14 2
VD1 VG1
11 3 180nH
10 Vpp
G2 VG2
C1467
U1401 C1409
68pF
68pF
8 NC1 30C65
9 FN0:NP
NC2
10
NC3
C1406
R1441
15 NC4
R1445 C1405 330pF
10K
FN0:NP
6.2K .01uF
FN0:NP
C1408
330pF
C1407
R1446
5.6K .01uF
FN0:NP
FN0:NP
C1465 C1466
R1451 R1453 R1454
R1455
180
180 1uF .01uF 180 180
PASUPVLTG_PA_1
PASUPVLTG
C1435 C1436
1uF .01uF C1458
10uF
R1409
.01
C1431 C1433
C1459
1uF
.01uF
10uF
FSWB
25 Vpp
C1477
C1439 C1481
C1437
L1425 L1415 82pF
300pF 470pF 470pF
18nH 18nH
L1416
18nH
C1478 L1426
C1480
C1438 C1440
18nH
82pF
300pF 470pF 470pF
25 Vpp
C1432
C1434 C1462
1uF .01uF 10uF
U_DRIVER
3.7V-3.9V
TP1401
R1460
R1480 R1463 0.1
PCIC_MOSBIAS_1 1%
27K
12K
FSWB2
C1472
U_PREDRIVER
MOSBIAS_1_SW
0.1uF
C1475 C1414
1uF
E1403
.01uF
R1447
R1448
0 150K
C1482 C1485
C1468
FN0:NP
.01uF L1406
1uF .01uF
250.974nH
R1450
820
20 Vpp
C1461
Q1401
C1412 .01uF
R1449 R1458 R1459
R1402
270pF 390
390 390
390
C1413
R1457
5 Vpp
10
.01uF
L1405
POS
120nH
FN0:NP
9T1
R1410
130
C1456
D1402
L1420 51pF
172.891nH
L1419
C1445
.01uF 27uH
FN0:NP
C1447
L1421
137.876nH
470pF
D1401 C1450
190 Vpp
C1448
3pF
C1446 C1451
C1449
24pF 180pF
110pF
470pF
C1443 C1444
130pF
130pF
C1479
220pF
L1417 L1418
18nH 66.389nH
90 Vpp
Peak-to-Peak Voltages (Vpp) are typical values as
C1441 C1442
could be measured with an oscilloscope under
220pF 120pF
the following conditions:
1.) Battery Voltage = 13.6 Volts
2.) Test Channel 11, i.e. High Power @ 46.125 MHz
C1471
C1470
.01uF 1uF
C1415 C1469
0.1uF 1uF
C1476
C1417
0.1uF 430pF
L1424
C1416 C1418
L1408
30pF 510pF 36.54nH
120nH
FN0:NP
FN0:NP FN0:NP
M1401
HEATSINK
LB3 (42.0-50.0 MHz) Power Amplifier Sheet 1 of 2
4-33
C1457
RXIN_PA_1
RXIN
.01uF
L1422 L1423
115.581nH 81.930nH
C1452 C1454
180 Vpp
C1455
24pF 33pF
R1411
C1453
16pF 10K
100pF
J1401
FL0830695-O