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August 16, 2007
6816985H01-B
6.5-8
900 MHz Troubleshooting Charts:
DC Supply Fail Troubleshooting Chart (3 of 3)
6.5.9 DC Supply Fail Troubleshooting Chart (3 of 3)
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
5
Check R595,
L511, C518,
and C560
Components
OK?
Replace
Problem
Component
Replace
U502
Check C513,
and C566
Replace
U501
End
Replace
U500
Replace
Problem
Component
Components
OK?
Replace
Problem
Component
Components
OK?
Check
Voltage at
C517
Voltage =
3.0V +/- 5%?
Check
Voltage at
C516
Check
Voltage at
C514
Voltage =
5.0V +/- 5%?
Voltage =
3.0V +/- 5%?
Check R595,
L503, C511,
and C561
Summary of Contents for ASTRO MT 1500
Page 4: ...iv Table of Contents August 16 2007 6816985H01 B Notes ...
Page 164: ...August 16 2007 6816985H01 B 5 6 Troubleshooting Procedures Operational Error Codes Notes ...
Page 188: ...August 16 2007 6816985H01 B 6 1 24 VHF Troubleshooting Charts Secure Hardware Failure Notes ...
Page 212: ...August 16 2007 6816985H01 B 6 2 24 UHF1 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 236: ...August 16 2007 6816985H01 B 6 3 24 UHF2 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 710: ...9 2 40 UHF1 Schematics Board Overlays and Parts Lists August 16 2007 6816985H01 B Notes ...
Page 806: ...9 5 32 900MHz Schematics Board Overlays and Parts Lists August 16 2007 6816985H01 B Notes ...
Page 816: ...Index 4 August 16 2007 6816985H01 B Notes ...
Page 817: ......