190-02207-A2 GPS 175/GNX 375/GNC 355 Part 23 AML STC Maintenance Manual
Rev. 3 Page vi
RECORD OF REVISIONS
CURRENT REVISION DESCRIPTION
Revision Revision Date Description
1 3/22/2019 Initial release.
2 7/25/2019 Added GNC 355/355A.
3
3/1/2023
Updated software to version to 3.20.
Section Change Description
Page ii Updated software license agreement.
2.1.1
Updated Figure 2-1 GPS 175 System Diagram to include interface to Fuel/Air Data
computers.
2.1.2
Updated Figure 2-2 GNX 375 System Diagram to include interface to Fuel/Air Data
computers.
2.1.3
Updated Figure 2-3 GNC 355 System Diagram to include interface to Fuel/Air Data
computers.
3.4
Updated Figure 3-4 Configuration Mode Home Page to include differences between
GNX 375 and GPS 175/GNC 355.
3.4.3.1.2 Corrected descriptions of serial ports.
3.4.3.1.3 Added Section 3.4.3.1.3 ADS-B Source (GPS 175 and GNC 355 Only).
3.4.3.1.5 Added Section 3.4.3.1.5 GI 275.
3.4.3.1.6 Added Section 3.4.3.1.6 Cross-Side Navigator.
3.4.3.3 Added Altitude Source Input.
3.4.5 Added Section 3.4.5 Feature Enablement.
5.2
Added two new failure annunciations to Figure 5-2 GPS 175/GNX 375/GNC 355
System Alert Troubleshooting, Sheet 2.
Added new failure annunciation to Figure 5-8 Database Alert Troubleshooting.
5.3.1 Updated Figure 5-12 J1751 Connector (Looking at Unit) to match orientation on unit.
5.5.1 Updated Figure 5-15 J3551 Connector (Looking at Unit) to match orientation on unit.
6 Added instructions to verify software compatibility when replacing LRUs.
Appendix A
Added entries for RS-232 ports 4 and 5 (GNX 375).
Added entries for GI 275 and Cross-Side Navigator.
Added entry for ALT SRC Input.
Added COM section.
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