User's Manual
Table Of Contents
- Front Cover
- Contents
- 1 - Foreword 11
- 2 - Safety and General Information 21
- 3 - Introduction 31
- 4 - System Applications 41
- 5 - Models and Specifications 51
- 6 - Approved Accessories 61
- 7 - Setup and Connections 71
- 8 - Operation 81
- 9 - Troubleshooting 91
- Introduction 91
- Recommended Test Equipment 91
- Troubleshooting Procedures 91
- Module Replacement Procedures 925
- General Replacement Information 925
- Anti-Static Precaution 925
- Care of Gold-Plated Connector Contacts 926
- Power Down Station Before Removing/Inserting Modules 926
- Validating Repairs 926
- Module Replacement 926
- Wireline 928
- ASTRO Modem Card/V.24 Interface Card 929
- Receiver 929
- Exciter 931
- Power Amplifier 932
- Power Supply 933
- Backplane 934
- Preselector Field Tuning Procedure 935
- 10 - Functional Theory of Operation 101
- 11 - Block Diagram, Schematics, Electrical Parts List, and Circuit Board Detail 111
- List of Tables
- List of Figures
- Parts Lists
- Foreword
- Safety and General Information
- Introduction
- System Applications
- Models and Specifications
- Approved Accessories
- Setup and Connections
- Operation
- Troubleshooting
- Introduction
- Recommended Test Equipment
- Troubleshooting Procedures
- Module Replacement Procedures
- Preselector Field Tuning Procedure
- Functional Theory of Operation
- Schematics
- Back Cover
68P81093C75-O December 1, 2000 9-1
Troubleshooting 9
Introduction This section provides troubleshooting recommendations and
procedures for the PDR 3500 and associated ancillary equipment.
Troubleshooting
Overview
The troubleshooting procedures and supporting diagrams allow the
service technician to isolate station faults to the module/assembly
level, or to a limited portion of the motherboard circuitry.
The following information is included:
• Alarm indicators and their functions
• Troubleshooting flow charts
• Module replacement procedures
• Post-repair procedures: Performing alignment
after replacing defective modules
Recommended Test
Equipment
Follow this list of recommended test equipment when performing
troubleshooting procedures on the PDR 3500 and ancillary
equipment:
Test Equipment List • Motorola R2001 or R2600 Series
Communications Analyzer (or equivalent)
• PC with RSS program
• In-Line Wattmeter (Motorola S-1350, or
equivalent)
• Dummy Load (50Ω, station wattage or higher)
• Handset/Microphone with PTT switch
(TMN6164, or equivalent)
Troubleshooting
Procedures
The troubleshooting and repair philosophy employs Field
Replaceable Unit (FRU) substitution. The PDR 3500 is comprised of
self-contained modules (FRUs). Replacing faulty modules should
bring the station back to normal operation.