5-20
Troubleshooting Charts
September 5, 2008
6881076C25-E
Chart C.26 ASTRO Spectra Plus VOCON DC Supply Failure
Check for 1.8V at R419
Make sure the following
components are placed
and soldered correctly:
U410, C430 R431, R451, R452,
C433, C415, R419
OK?
Repair proper
components
Replace U410
Fixed?
Refer board to
Service Depot
Yes
No
No
No
No
Yes
Yes
Yes
Check for 3.0 V at R420
Present?
Present?
No trouble found
U411, C434, C435, C436, C437,
Make sure the following
components are placed
and soldered correctly:
Check for 13.8 V at J501-35
Yes
Yes
Yes
Yes
END
END
No
No
No
No
OK?
OK?
Repair proper
components
Replace U411
Fixed?
Refer board to
Service Depot
Inspect placement and
soldering of J501
Refer board to
Service Depot
Repair connector
Present?
R420
Yes
END
No
Fixed?
Recycle radio
power
Содержание ASTRO Digital Spectra
Страница 1: ...ASTRO Digital Spectra and Digital Spectra Plus UHF VHF 800 MHz Mobile Radios Detailed Service Manual ...
Страница 2: ......
Страница 6: ...September 5 2008 6881076C25 E iv Document History Notes ...
Страница 20: ...xviii List of Tables September 5 2008 6881076C25 E Notes ...
Страница 24: ...September 5 2008 6881076C25 E xxii CommercialWarranty Notes ...
Страница 48: ...September 5 2008 6881076C25 E xlvi Model Numbering Charts and Specifications Notes ...
Страница 142: ...September 5 2008 6881076C25 E 3 82 Theory of Operation Power Amplifiers Notes ...
Страница 218: ...September 5 2008 6881076C25 E 4 76 Troubleshooting Procedures Power Amplifier Procedures Notes ...
Страница 258: ...September 5 2008 6881076C25 E 6 14 Troubleshooting Waveforms ASTRO Digital Spectra Plus VOCON Board Waveforms Notes ...
Страница 434: ...September 5 2008 6881076C25 E Glossary 10 Notes ...
Страница 440: ...Index 6 September 5 2008 6881076C25 E Notes ...
Страница 441: ......