Equipment Configuration And Testing; Gtn 6Xx/7Xx - Garmin GTN 6XX System Maintenance Manual

7 EQUIPMENT CONFIGURATION AND TESTING

This section provides procedures to be followed after an LRU is replaced. At the beginning of each LRU
section, instructions are given to guide the technician for various removal and replacement scenarios.
These instructions define necessary procedures to be followed for situations in which original equipment
was reinstalled as well as for situations in which new equipment (new serial number) is installed.

7.1 GTN 6XX/7XX

Original GTN 6XX/7XX Reinstalled
If the removed GTN is installed in its original position, no software loading or configuration setting
changes are required. This does not include units that were returned for repair as their software and
configuration files are deleted during the repair testing progress. It is recommended to perform the
connector engagement check to ensure that the GTN is properly seated to the connectors.
See Section 7.1.2.1.
New, Repaired, or Exchanged GTN Installed
If a new, repaired, or exchanged GTN is installed, the correct software must be loaded to the unit. Some
configuration files must be set. See the summary in Table . Any enabled features such as TAWS-B or
ChartView will not need to be re-enabled if the configuration module was left in the aircraft.
This section covers the necessary steps to configure and test a replacement GTN unit. The steps provided
in this section are only applicable for replacement of an equivalent GTN unit (i.e. 750 for 750, 625 for 625
etc.). If wiring updates are needed or the configuration module is being replaced simultaneously, refer to
the GTN 6XX/7XX AML STC Installation Manual P/N 190-01007-A3 for installation instructions.
190-01007-A1 System Maintenance Manual GTN 6XX/7XX Part 23 AML STC
Rev. 5 Page 7-1