Troubleshooting Charts:
DC Supply Failure
5-15
5.4
DC Supply Failure
DC Supply 5 Volt Failure
V_SW_5
Is fuse intact
(not blown)?
Replace Fuse
Verify at
test point: F
Verify if USB accessory is
shorting VBUS line.
Verify L200, C202
and C203 is good
Replace accessory
or cable
Verify SW_B+
at C6565
Check Q6502 and
Q6508 for damage
Is 6 < V < 9
Verify Q6501
Measure BGAP_COMP
voltage at R6543
Is 2.2 < V < 2.7
Check U6505 circuitry. If good,
change U6505
Check BGAP_COMP circuitry.
Replace defective part
Is radio current
>100mA
Yes
Yes
Yes
Yes
Yes
No
No
No
No
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: ......