5-22
Troubleshooting Charts:
Side Button Error
5.5
Side Button Error
SIDE BUTTON
TEST
Verify operation of buttons by using
Button Test” flowchart
Verify physical connection between the
main flex, side control flex and
Main Board. Re-run button test.
Use a voltmeter to measure voltage at the
following resistors on the Main board
(1.875V @ each point):
R4005 - PTT, R4006 - Side button 1,
R4007 - Side button 2, R6101 - Monitor
Replace main
chassis
Button check
OK?
Are the
voltages
present?
END
Follow troubleshooting
guide 5.4.4
Verify buttons
enabled in CPS
Yes
Yes
Yes
No
No
No
Button check
OK?
Monitor thr voltages at each resistor while
pressing the corresponding button. The
voltages 0V while the button is pressed.
Voltages = 0 while
button press?
Re-run button test
Yes
No
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: ......