Troubleshooting Charts:
RX Audio Error
5-29
Internal Audio
No audio out of
Main Speaker
Verify Audio signal
present at Main
speaker
Check audio signal
at TP6405 and
TP6406
Verify Audio signal
present at C6430
and C6431
Check Audio Codec
U6405
Is signal
present?
Is data
present?
Is data
present?
Verify all connectors
from J2302 to
frontkit flex is good.
Check continuity.
Verify V_SW_5 is present.
If yes, check U6411
circuitry. Replace U6411 if
all is good.
Replace Main
speaker
Yes
Yes
Yes
No
No
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: ......