Troubleshooting Charts:
Side Button Error
5-25
5.8
Side Button Error
SIDE BUTTON
TEST
Verify operation of buttons by using
Button Test” flowchart
Verify physical connection between the side
controls flex, Front kit flex, keypad 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 APX 2000
Page 1: ...APXTM TWO WAY RADIOS APX 1000 APX 2000 APX 4000 APX 4000Li DETAILED SERVICE MANUAL ...
Page 4: ......
Page 6: ...iv Document History Notes ...
Page 8: ...Notes vi Commercial Warranty ...
Page 10: ...Notes ...
Page 22: ...xiv List of Figures Notes ...
Page 226: ...6 64 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Page 688: ...Index 4 Index Notes ...
Page 690: ...ii Notes ...
Page 700: ...xvi List of Figures Notes ...
Page 806: ...5 50 Troubleshooting Charts PA Failure Notes ...
Page 1008: ...8 178 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF2 84012621001 Notes ...
Page 1062: ...8 234 Schematics Boards Overlays and Parts Lists Keypad Board M2 and M3 PC000261A01 Notes ...
Page 1064: ...ii Notes ...
Page 1068: ...Notes A 4 EMEA Warranty Service and Technical Support Further Assistance From Motorola ...
Page 1090: ...Glossary 10 Glossary Notes ...
Page 1094: ...Index 4 Index Notes ...
Page 1095: ......