November 16, 2006
6881094C31-E
5-12
Troubleshooting Charts:
DC Supply Failure
DC Supply Failure (for kit NNTN5567) —Page 3
MAEPF-27393-C
Voltage
= 5.0V+/-5%?
Check Voltage
at pin 5 of
U505 (VOCON)
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
3
Check E6,
C6, C8, and D2
Voltage
= V2?*
Components
OK?
Check R503
,
D501, C509,
C510, and C508
Replace
Problem
Component
Replace U1
on RF Board
Replace
Problem
Component
Components
OK?
Check Voltage
at TP7
Replace
U2
Check Voltage
at TP5
Check
700-800: D1, E5,
C12, C13, and C14
VHF: E5, C3, C4,
C5, and D1
Check Voltage
at TP3
Replace
U3
End
Replace
U1
Voltage
= 5.0V+/-5%?
Replace
Problem
Component
Voltage
= V2?*
Components
OK?
Replace
Problem
Component
Check
E7, C9, C10,
C11, and D13
Components
OK?
* per Standard Bias Table
* per Standard Bias Table
Summary of Contents for ASTRO XTS-5000
Page 7: ...vi Table of Contents November 16 2006 6881094C31 E Notes ...
Page 11: ...x List of Figures November 16 2006 6881094C31 E Notes ...
Page 17: ...November 16 2006 6881094C31 E xvi CommercialWarranty Notes ...
Page 31: ...November 16 2006 6881094C31 E xxx Portable Radio Model Numbering System Notes ...
Page 83: ...November 16 2006 6881094C31 E 3 44 Theory of Operation Encryption Module ...
Page 135: ...November 16 2006 6881094C31 E 5 44 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 175: ...November 16 2006 6881094C31 E 7 32 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 367: ...November 16 2006 6881094C31 E Glossary 10 Notes ...
Page 373: ...Index 6 November 16 2006 6881094C31 E Notes ...