5-16
Troubleshooting Charts:
DC Supply Failure
DC Supply 3.6 Volt Failure
V_SW_5
Is fuse intact
(not blown)?
Replace Fuse
Verify at
test point: F
Is connectors from J2301 to
display connector shorted or damage?
Verify L200, C202
and C203 is good
Replace board with
damaged connector.
Verify SW_B+
at C6524
Is 6 < V < 9
Verify Q6501
Check U6504 circuitry.
Enable input
present?
Check U6508 loading
V_SW_3.60
MAKO damaged. Replace
MAKO
Is radio current
>100mA
Check U201 is loading
V_SW_3.60
Yes
Yes
Yes
Yes
Yes
Yes
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: ......