Garmin GNS 480 Installation Manual

Also see for Apollo CNX80: User Newsletter User Newsletter Supplemental Flight manual Pilot's guide Data list

Troubleshooting4-4 560-0982-01 Rev A GNS 480 (CNX80) Installation ManualTable 4-1. Troubleshooting GuideProblem Possible Cause SolutionARINC 429 device isnot receiving datafrom the GNS 480.• GNS 480 ARINC 429 output notconfigured correctly.• ARINC 429 output port speed notcorrect• Wiring connections are incorrect.• Check ARINC 429 output port settingfor port that device is connected to.• Check ARINC 429 output port speedsetting for port that device is connectedto and verify that the speed is correct forthat device.• Check wiring.RS232 device is notcommunicating withthe GNS 480.• GNS 480 RS232 port notconfigured correctly.• Improper setup on the remotedevice.• Device not compatible, orimproper connection.• Multiple Tx lines connectedtogether (not applicable to dualGNS 480’s controlling the SL70).• Check RS232 port setting for port thatdevice is connected to.• Verify the configuration of the otherdevice.• Verify GNS 480 Rx is connected toremote device Tx and GNS 480 Tx isconnected to remote device Rx.• Verify that there is only one Tx sourceper Rx port (not applicable to dual GNS480’s controlling the SL70).4.2 CONTACTING THE FACTORY FOR ASSISTANCEIf the GNS 480 unit fails to operate despite troubleshooting efforts, contact Garmin Technical Supportfor assistance.GARMIN International, Inc.1200 East 151st StreetOlathe, KS 66062-3426USAPhone: (913) 397-8200FAX: (913) 397-8282http://www.garmin.comBe prepared to offer the following information about the installation:• Installation configuration (list of any accessories)• Model number, part number with mod levels, and serial number• Software Versions• Description of problem• Efforts made to isolate the problem