Installation manual

Troubleshooting
54 Apollo MX20 Installation Manual
Table 10 - Troubleshooting Guide
Problem Cause Solution
LINK 1. Unit is not WSI sensor capable.
2. Data port configuration incorrect.
3. WSI Inflight sensor function not
enabled.
4. WSI Inflight sensor not powered
up; not functioning properly.
5. Wiring connects are incorrect.
1. Ensure that the model MX20 is
WSI sensor capable.
2. Ensure that the data port
configuration is correct and the
WSI sensor is set correctly.
3. Ensure that the WSI sensor
function is enabled.
4. Ensure that the WSI sensor has
power applied and is functional.
5. Verify wiring and pin
connections.
MX20 runs hot. Arrangement of avionics and
installation area does not provide
sufficient airflow.
1. If an internal fan is present, verify
that it is operational and that the
opening is clear of obstructions.
The fans should turn on when the
unit's internal temperature is
approximately 95-100ºF.
2. If an internal fan is not present,
one may be installed by the
factory. Contact factory.
XPDR 1. Unit is not GTX330 capable.
2. Data port configured incorrectly.
3. Traffic function not enabled.
4. GTX330 not powered up or not
functioning properly.
5. Wiring connection are incorrect.
1. Ensure that the model MX20 is
GTX330 capable.
2. Ensure that the data port
configuration is correct and the
GTX330 is set correctly.
3. Ensure that the GTX330 function
is enabled.
4. Ensure that the GTX330 has
power applied and is functional.
5. Verify wiring and pin
connections
Split Screen function does not
appear.
Split Screen function is not enabled. Enable Split Screen function in
INSTL mode function page.
4.2 INTEGRATION TROUBLESHOOTING PROCEDURE
Use this procedure to check the integration of external data sources with the MX20.
1. Remove power to all external data sources and power on just the MX20.
2. Verify the correct power up sequence and access to the different functions of the MX20.
3. Verify that amber data flags are presented and own-ship is ‘X’d, indicating that external data sources
are not available. Allow the system to operate for several minutes to verify correct basic operation.
4. Apply power to each external data source one at a time. Verify that the corresponding amber data flag
extinguishes with each data source.
5. Verify that system operates correctly with the new data source by switching between different
functions and allowing the system to operate for several minutes. Repeat with the next data source.