Appendix E: Troubleshooting Guide - Avidyne IFD540 Installation Manual

Appendix E: Troubleshooting Guide

Component
IFD5XX The unit is not getting power to
the main connector
The IFD5XX is not computing a
position
The GPS Signal levels are very
low
VHF Com is not transmitting
The IFD5XX is not tuning the
DME
RS-232 Device is not
communicating
ARINC 429 is not communicating
Display appears excessively dim
or off
600-00299-000
Trouble
The unit is not getting power.
Wiring
Antenna
Wiring
Antenna shading
Interference
Wiring
Configuration
Wiring
DME
Configuration
Wiring
Configuration
Wiring
Configuration (configured for
"night mode")
Page 179 of 198
IFD5XX Installation Manual
Probable Cause Solution
Check Circuit Breaker
Check wiring and unit seating in
tray
Check Coaxial Cables
Verify antenna has a clear
unobstructed view of the sky
Check coaxial cable and
connectors
Check routing
Verify the antenna is mounted on
top of the aircraft
Verify antenna is clear of
hangars, buildings, etc.
Verify another piece of aircraft
equipment is not interfering with
the GPS system
Check the aircraft's PTT switch
Check Audio Panel (if installed)
Check wiring
Verify the IFD5XX is configured
correctly.
Checking wiring
Verify the DME is configured for
the IFD5XX tuning type
Verify the IFD5XX is configured
for the appropriate device.
Check wiring and unit seating in
tray
Verify the IFD5XX is configured
for the appropriate device.
Check wiring and unit seating in
tray
Check cockpit dimming rheostat
position
Revision: 02