GTN 6XX/7XX AML STC System Maintenance Manual 190-01007-A1Page ii Rev. 6TABLE OF CONTENTS1 INTRODUCTION ......................................................................................1-11.1 Content, Scope and Purpose.......................................................................................................1-11.2 Organization ...............................................................................................................................1-11.3 Definitions and Abbreviations ...................................................................................................1-21.4 Publications ................................................................................................................................1-31.5 Distribution.................................................................................................................................1-42 SYSTEM DESCRIPTION.................................................................................................................2-12.1 Equipment Descriptions .............................................................................................................2-12.2 Backplate Connectors.................................................................................................................2-22.3 GTN Optional Interfaces ............................................................................................................2-42.4 GTN Block Diagram ..................................................................................................................2-53 GTN CONTROL AND OPERATION .............................................................................................3-13.1 GTN Controls .............................................................................................................................3-13.2 GTN Normal Mode Overview ...................................................................................................3-13.3 Software Loading .......................................................................................................................3-23.4 GTN Configuration Mode Overview .........................................................................................3-63.5 Database Updates .....................................................................................................................3-194 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS.........................................................4-14.1 Airworthiness Limitations..........................................................................................................4-14.2 Servicing Information ................................................................................................................4-14.3 Maintenance Intervals ................................................................................................................4-24.4 Visual Inspection........................................................................................................................4-34.5 Electrical Bonding Test ..............................................................................................................4-44.6 Transient Voltage Suppressor (TVS) (If Installed) ....................................................................4-64.7 GPS/SBAS Antenna Cable Overbraid Inspection (If Installed).................................................4-84.8 WXR HSDB Cable Overbraid Inspection (If Installed).............................................................4-85 TROUBLESHOOTING ....................................................................................................................5-15.1 GTN General Troubleshooting...................................................................................................5-15.2 GTN Failure Annunciations .......................................................................................................5-55.3 GTN System Messages ..............................................................................................................5-65.4 GMA 35 Troubleshooting ........................................................................................................5-195.5 GMA 35 Failure Annunciations ...............................................................................................5-205.6 GMA 35 System Messages ......................................................................................................5-206 EQUIPMENT REMOVAL AND REINSTALLATION ................................................................6-16.1 GTN............................................................................................................................................6-16.2 GMA 35......................................................................................................................................6-56.3 SD Card ......................................................................................................................................6-76.4 NAV Antenna Cable Diplexer ...................................................................................................6-86.5 NAV Antenna Cable Splitter......................................................................................................6-96.6 Configuration Module (P1001 Only) .......................................................................................6-106.7 GTN Fan...................................................................................................................................6-136.8 TVS and Fuse (Nonmetallic Aircraft Only) .............................................................................6-166.9 GPS/SBAS Antenna Cable Overbraid .....................................................................................6-206.10 WXR HSDB Cable Overbraid .................................................................................................6-237 EQUIPMENT CONFIGURATION AND TESTING.....................................................................7-17.1 GTN 6XX/7XX ..........................................................................................................................7-17.2 GMA 35......................................................................................................................................7-67.3 Configuration Module .............................................................................................................7-107.4 Interfaced Equipment ...............................................................................................................7-107.5 Enabled Features ......................................................................................................................7-23