User's Manual
Table Of Contents
- Front Cover
- Foreword
- Table of Contents
- Foreword ii
- List of Figures vii
- List of Tables xi
- Commercial Warranty xiii
- Model Numbering, Charts, and Specifications xvii
- Chapter 1 Introduction 1-1
- Chapter 2 Radio Power 2-1
- Chapter 3 Theory of Operation 3-1
- Chapter 4 Troubleshooting Procedures 4-1
- Chapter 5 Troubleshooting Charts 5-1
- Chapter 6 Troubleshooting Waveforms 6-1
- Chapter 7 Troubleshooting Tables 7-1
- Chapter 8 Schematics, Board Overlays, and Parts Lists 8-1
- Appendix A Replacement Parts Ordering A-1
- Glossary Glossary-1
- Index Index-1
- List of Figures
- List of Tables
- Related Publications
- Commercial Warranty
- Model Numbering, Charts, and Specifications
- Portable Radio Model Numbering System
- ASTRO XTS5000 VHF Model Chart
- ASTRO XTS5000R (Ruggedized) VHF Model Chart
- ASTRO XTS5000 UHF Range 1 Model Chart
- ASTRO XTS5000R (Ruggedized) UHF Range 1 Model Chart
- ASTRO XTS5000 700–800MHz Model Chart
- ASTRO XTS5000R (Ruggedized) 700–800MHz Model Chart
- Specifications for VHF Radios
- Specifications for UHF Range 1 Radios
- Specifications for 700–800 MHz Radios
- Chapter 1 Introduction
- Chapter 2 Radio Power
- Chapter 4 Troubleshooting Procedures
- Chapter 5 Troubleshooting Charts
- 5.1 List of Troubleshooting Charts
- 5.2 Main Troubleshooting Flowchart
- 5.3 Power-Up Failure
- 5.4 DC Supply Failure
- 5.5 Display Failure (NNTN4563, NNTN4819, & NNTN4717 VOCON Kits)
- 5.6 Display Failure (NTN9564)
- 5.7 Volume Set Error
- 5.8 Channel/Zone Select Error
- 5.9 Button Test
- 5.10 Top/Side Button Test
- 5.11 VCO TX/RX Unlock
- 5.12 VOCON TX Audio
- 5.13 VOCON RX Audio
- 5.14 RX RF
- 5.15 TX RF (VHF)
- 5.16 TX RF (UHF R1/700-800MHz)
- 5.17 Keyload Failure
- 5.18 Secure Hardware Failure
- Chapter 6 Troubleshooting Waveforms
- Chapter 7 Troubleshooting Tables
- Appendix A Replacement Parts Ordering
- Glossary
- Index
- Back Cover
6881094C31-C October 14, 2003
Troubleshooting Charts: DC Supply Failure 5-7
DC Supply Failure—Page 3
MAEPF-27393-C
Voltage
= 5.0V+/-5%?
Check Voltage
at pin 5 of
U505 (VOCON)
No No
NoNo
No No
No
No
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
3
Check
700-800: E6, C15,
C16, C17, and D2
VHF: E6, C6,
C8, and D2
Voltage
= V2?*
Components
OK?
Check R503,
D501, C509,
C510, and C508
Replace
Problem
Component
Replace
700-800: U505
VHF: U1
Replace
Problem
Component
Components
OK?
Check Voltage
at TP7
Check Voltage
at TP6
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?*
No
Is unit
VHF?
Components
OK?
Replace
Problem
Component
Check
700-800: D3, R704,
C19, and C20
VHF: E7, C9, C10,
C11, and D3
Components
OK?
No No
Ye s
Ye s
Replace
U5
Voltage
= V2?*
Replace
Problem
Component
Check
E8, C18, C19,
C20, and D4
Components
OK?
* per Standard Bias Table
* per Standard Bias Table
* per Standard Bias Table