8-12
Schematics, Boards Overlays, and Parts Lists
: Main Board Block: UHF1 (84012513001_A)
Figure 8-10. Receiver VCO Circuit
IF
IF
IF
IF3101M22
IF3102M22
IF3100M22
DC_SUPER_FILTER_5V
GPO2
GPO1
1
1
1
IN
IN
IN
DC_SUPER_FILTER_5V
GPO1
4.7K
47K
47K
10K
UMC5NT2
Q3128M22
3
1
4
5
2
390NH
0.1UF
820NH
27K
18K
68
100PF
100PF
0.1UF
C3158M22
R3159M22
L3125M22
C3122M22
R3118M22
C3109M22
C3111M22
R3114M22
L3119M22
DNP
5.4NH
3.6PF
15NH
6.8PF
100PF
1SV279
390NH
IF
1SV279
2.7PF
7.5PF
1SV279
1SV279
5.6PF
C3101M22
IF3103M22
L3106M22
L3112M22
C3113M22
C3110M22
C3107M22
C3108M22
D3105M22
D3103M22
D3104M22
D3102M22
L3101M22
C3100M22
VCTRL
1
21
21
2
1
2
1
IN
2.2PF
NE856
82
18
6.8PF
100PF
300
6.8PF
820NH
300
R3105M22
R3106M22
R3103M22
C3159M22
C3120M22
R3127M22
L3126M22
C3116M22
C3115M22
Q3123M22
1
2
3
100PF
DNP
0
10PF
C3102M22
C3104M22
L3100M22
V1
V2
V3
RFC
NC
RF1
RF2
RF3
CGND
NC
SKY13251
U3001M22
VCO_TX
7
6
3
1
8
5
4
2
G1
100PF
C3161M22
GPO2
GPO1
IF
IF3104M22
VCO_OUT
1
OUT
100PF
C3105M22
Summary of Contents for Astro APX 3000
Page 1: ...APXTM TWO WAY RADIOS APX 3000 DETAILED SERVICE MANUAL ...
Page 2: ......
Page 4: ...Notes ...
Page 6: ...vi Document History Notes ...
Page 10: ...x Table of Contents Notes ...
Page 12: ...xii List of Tables Notes ...
Page 18: ...xviii List of Figures Notes ...
Page 22: ...xxii CommercialWarranty Notes ...
Page 46: ...3 20 Theory of Operation Main Board Notes ...
Page 84: ...3 58 Theory of Operation Bluetooth Notes ...
Page 208: ...6 64 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Page 222: ...7 14 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 282: ...8 60 Schematics Boards Overlays and Parts Lists Main Board Block UHF1 84012513001_A Notes ...
Page 390: ...8 168 Schematics Boards Overlays and Parts Lists Main Board Block VHF 84012512001_A Notes ...
Page 456: ...9 8 Debugging Fixture Powering up Covert Board Notes ...
Page 468: ...Glossary 10 Glossary Notes ...
Page 472: ...Index 4 Index Notes ...
Page 473: ......