Installation Instructions

190-01007-A3 GTN 6XX/7XX AML STC Installation Manual
Rev. 4 Page 5-85
5.6.5 HSDB Wiring Checkout
If HSDB wiring has been installed for other Garmin LRUs
that interface via HSDB, follow the procedure below to ensure
it has been installed and configured correctly.
1. Access the GTN Diagnostics page from the main
Configuration Mode home page.
2. Touch the HSDB (Ethernet) key. The HSDB
Diagnostics page, shown in Figure 5-50., will be
displayed.
3. Ensure any LRUs connected via HSDB are powered
on and properly configured.
4. For each Ethernet port that has HSDB wiring
connected to it, ensure that the port status displays
‘Connected’ and ‘Receiving’.
5. If the previous step did not perform correctly, check
the electrical connections and configuration setup.
5.6.6 Crossfill Check (If Dual GTNs Installed)
1. Turn on both GTN units in the aircraft.
2. For each GTN unit, go to the HSDB Ethernet Diagnostics page shown in Figure 5-50.. For the
port connecting the cross-side GTN, check the Ethernet Port Status and ensure that ‘Connected’ is
displayed under ‘Connection’ and ‘Receiving’ is displayed under ‘Data’. If the previous steps do
not perform correctly, check the electrical connections and configuration setup. The ports to
which the GTNs are connected must be configured as ‘Connected’ for each GTN. Also, under the
Interfaced Equipment page, the cross-side navigator must be set to ‘Present’.
Figure 5-50. HSDB Diagnostics
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