Contacting The Factory For Assistance - Garmin GNS 480 Installation Manaul

Troubleshooting
Problem
• Wiring connections are incorrect.
• DME Select is not low
Tuning data not
updating DME
• Wiring connections are incorrect.
• GNS 480 ARINC 429 output not
ARINC 429 device is
not receiving data from
the GNS 480.
• ARINC 429 output port speed not
• Wiring connections are incorrect.
• GNS 480 RS-232 port not
RS-232 device is not
communicating with
the GNS 480.
• Improper setup on the remote
• Device not compatible, or improper
• Multiple Tx lines connected

4.2 Contacting the Factory for Assistance

If the GNS 480 unit fails to operate despite troubleshooting efforts, contact Garmin Technical Support for
assistance.
GARMIN International, Inc.
st
1200 East 151
Olathe, KS 66062-3426
USA
Phone: (913) 397-8200
FAX: (913) 397-8282
http://www.garmin.com
Be 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
4-4
Table 4-1. Troubleshooting Guide
Possible Cause
configured correctly.
correct
configured correctly.
device.
connection.
together (not applicable to dual
GNS 480's controlling the SL70).
Street
560-0982-01 Rev L
Solution
•
Check wiring
•
Verify DME Select pulled low.
•
Check wiring.
•
Check ARINC 429 output port setting
for port that device is connected to.
•
Check ARINC 429 output port speed
setting for port that device is connected
to and verify that the speed is correct for
that device.
•
Check wiring.
•
Check RS-232 port setting for port that
device is connected to.
•
Verify the configuration of the other
device.
•
Verify GNS 480 Rx is connected to
remote device Tx and GNS 480 Tx is
connected to remote device Rx.
•
Verify that there is only one Tx source
per Rx port (not applicable to dual
GNS 480s controlling the SL70).
GNS 480 (CNX80) Installation Manual