400W Series Installation Manual Page 6-3190-00356-02 Rev. ETable 6-1. Troubleshooting GuideProblem Possible Cause Solution• 400W Series unit ARINC 429output not configured correctly.• Check ARINC 429 output port settingfor port that device is connected to.• ARINC 429 output port speednot correct• Check ARINC 429 output port speedsetting for port that device isconnected to and verify that the speedis correct for that device.ARINC 429 deviceis not receiving datafrom the 400WSeries unit.• Wiring connections areincorrect.• Check wiring.• 400W Series unit RS-232 portnot configured correctly.• Check RS-232 port setting for portthat device is connected to.• Improper setup on the remotedevice.• Verify the configuration of the otherdevice.• Device not compatible, orimproper connection.• Verify 400W Series unit RX isconnected to remote device TX and400W Series unit TX is connected toremote device Rx.RS-232 device is notcommunicating withthe 400W Seriesunit.• Multiple TX lines connectedtogether.• Verify that there is only one TXsource per RX port.6.2 Contacting the Factory for AssistanceIf the 400W Series unit fails to operate despite troubleshooting efforts, contact Garmin TechnicalSupport for 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
