5-4
Troubleshooting Charts:
Power-Up Failure
Power-Up Failure – B+ Incorrect Voltage
B+ Incorrect Voltage
Check Voltage at
Test Point
F
(VOCON)
6 < V < 9?
Check Mating
Connector to RF
Board
Check Voltage at
R6505 (VOCON)
No
Yes
6 < V < 9?
Check Q6501
Circuit and
Replace any non
Functional Parts
Replace VOCON
Board
No
Yes
RF to Vocon
Connectors
ok?
Replace
Connector
No
Replace RF
Board, Check
F Test
Point
Yes
6 < V < 9?
Replace VOCON
Board
Replace RF Board
Yes
No
Summary of Contents for ASTRO APX 7000
Page 1: ......
Page 4: ...iv Document History Notes ...
Page 24: ...2 4 Radio Power DC Power Routing VOCON Board Notes ...
Page 98: ...3 74 Theory of Operation Global Positioning System GPS ...
Page 163: ...Troubleshooting Charts PA Failure 5 59 ...
Page 164: ...5 60 Troubleshooting Charts PA Failure ...
Page 276: ...7 58 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 318: ...8 42 Schematics Boards Overlays and Parts Lists Transceiver RF Boards VHF 700 800 Notes ...
Page 380: ...8 104 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 700 800 MHz Notes ...
Page 432: ...8 156 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 VHF Notes ...
Page 458: ...8 182 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 UHF2 Notes ...
Page 498: ...8 222 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF2 700 800 MHz Notes ...
Page 546: ...8 270 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF2 VHF Notes ...
Page 606: ...8 330 Schematics Boards Overlays and Parts Lists VOCON Boards Notes ...
Page 638: ...Glossary 10 Glossary Notes ...
Page 643: ......