Post Installation Configuration And Checkout Procedures; System Configuration Overview; Mounting, Wiring, And Power Checks - Garmin GTN 625 Installation Manual

6 POST INSTALLATION CONFIGURATION AND CHECKOUT
PROCEDURES

6.1 System Configuration Overview

This section contains instructions for configuring the GTN for each installation as well as checks to ensure
the system is properly installed and functioning correctly. A summary of the steps required for
configuration and checkout of the GTN is as follows:
 Perform the installation checks
 Load software into the GTN (if required) (Section 6.16)
 Configure the GTN for the specific installation (Section 6.4)
 Perform ground checks to verify the interfaces to external sensors (Section 6.10 and Section 6.11)
 Perform the specified flight checks (Section 6.13)
 Update the aircraft documentation (Section 6.17)

6.2 Mounting, Wiring, and Power Checks

Verify that all cables are properly secured and shields are connected to the shield block of the connectors.
Check the movement of the flight and engine controls to verify there is no interference between the cabling
and control systems. Ensure that all wiring is installed as described in Section 3.6.
Prior to powering up the GTN, the wiring harness must be checked for proper connections to the aircraft
systems and other avionics equipment. Point to point continuity must be checked to expose any faults such
as shorting to ground. Any faults or discrepancies must be corrected before proceeding.
After accomplishing a continuity check, perform power and ground checks to verify proper power
distribution to the GTN. Any faults or discrepancies should be corrected at this time. Remove power from
the aircraft upon completion of the harness checkout.
The GTN can be installed after completion of the continuity and power checks. The GTN should be
installed into the rack and secured appropriately, as described in Section 4.10.1. The GTN must be
connected to the wiring harness and antennas.
CAUTION
Ensure that all lighting busses are turned to their lowest settings prior to applying power
to the GTN. This will prevent damage to the unit in case of any wiring errors.
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Rev. F
GTN 625/635/650 TSO Installation Manual
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