QP-750 Service Manual
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9.3.3 QP-750 UHF PLL Section
Rset
1
CP
2
CPGND
3
AGND
4
RFinB
5
RFinA
6
AVDD
7
REFin
8
DGND
9
CE
10
CLK
11
DATA
12
LE
13
MUXOUT
14
DVDD
15
Vp
16
IC1400
ADF4111
C1429
1000p
C1453
1000p
R1435
10k
R1414
10K
R1497
4.7K
C1482
470p
R1404
560
C1444
10p
L1403
560nH
C1445
10p
C
1
4
3
1
1
0
u
6
.3
v
C1442
470p
R1410
91K
R1402
180K
C1428
4.7u 10v
R1403
120K
TH1401
0
PLLSTB
PLLDAT
PLLCLK
C1416
100p
C1454
0.1u
C1455
100p
C1496
100p
PLLUL
C1490
0.1u 20v
R1496
1.2K
C1426
1u 16v
R1415
0
C1436
0.1u 20v
R1405
0
C1424
470p
C
1
4
2
1
1
0
u
/6
.3
V
C1495
470p
L1407
Vc
1
Gnd
2
Out
3
Vcc
4
X1401
16.8M
PLLCLK
PLLDAT
PLLSTB
PLLUL
C1437
0.015UF
R1421
39K
C1435
0.018UF
R1422
22K
CTC_PLL
CTC_PLL
R1423
15K
VR21
68K
R
1
4
0
8
1
0
R1407
10
C1439
470p
R1406
10
C5V
C1427
0.1U
R
1
4
0
9
1
0
0
k
CV
C5V
R1401
56
L1409
12n
L1410
39n
R1420
100K
R1419
1K
R1484
220
VCO_OUT
C1430
1000p
C1433
5p
C1438
3p
C1443
10p
C1440
5p
C1458
470p
C1450
5p
C1449
470p
Q1416
2SC5108(Y)
5C
R1411
470
C1401
220P
Q1417
2SC5108(y)
R1413
680K
R1436
100
L1411
330N
C1403
0.01U
L1412
NC
C1405
1000P
C1406
NC
C1407
56p
5R
C1404
33P
C1402
NC
L1408
330nH
OSCI
OSCI
R1486
56
Summary of Contents for QP-750
Page 1: ...QP 750 Service Manual 1 QP 750 Service Manual Quantun Electronics LLC ...
Page 37: ...QP 750 Service Manual 37 Chapter 8 UHF Troubleshooting Tables 8 1 Troubleshooting for CPU ...
Page 38: ...QP 750 Service Manual 38 8 2 Troubleshooting for VCO ...
Page 39: ...QP 750 Service Manual 39 8 3 Troubleshooting for Transmission ...
Page 40: ...QP 750 Service Manual 40 8 4 Troubleshooting for Receive ...
Page 42: ...QP 750 Service Manual 42 9 2 QP 750 block diagrams ...
Page 49: ...QP 750 Service Manual 49 9 4 QP 750 UHF PCB Layout 9 4 1 PCB Top Layer View ...
Page 50: ...QP 750 Service Manual 50 9 4 2 PCB Top Layer Chip Map ...
Page 51: ...QP 750 Service Manual 51 9 4 3 PCB Bottom Layer View ...
Page 52: ...QP 750 Service Manual 52 9 4 4 PCB bottom chip map ...