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
October 14, 2003 6881094C31-C
5-26 Troubleshooting Charts: RX RF
RX RF—Page 4
Ye s
Fbit
< 1.2 MHz?
Measure
tuning voltage
(Vt) at R512
No
No
No
Ye s
Ye s
Vt= 3 Vdc?
Repair
defects
Replace
Varactor D501
Replace
Abacus
U500
Repair
defects
Visual
examination
OK?
4
Visual
examination
OK?
Remove SH501,
inspect
components
No
Ye s
5
5
No
Ye s
Remove SH501,
inspect clock
oscillator circuit at
U500-19, 20
Vt = 0 Vdc?
5
Clock
synthesizer
MAEPF-27473-O