Installation Manual

Lynx NGT-9000
Installation Manual
0040-17001-01 (Revision W) Maintenance Page 4-17
Table 4-2: System Status Messages
SYMPTOM CAUSE/CORRECTIVE ACTIONS
System Degraded
(This message is not indicated in the
system message window but on the status
screen after system startup or self test has
executed)
The message is seen during start up due to the following
failure(s):
• CRC Failure
• Configuration
• Other system functions indicated as degraded
1. Cycle power to the unit to clear the failure.
2. The configuration module data may be corrupted or
missing. The original configuration settings are still
present, but the backup copy is corrupt. Using the
instructions provided in this manual to load the
configuration data.
3. Replacement of the configuration module may be
required. Contact ACSS Field Service before removal.
System Fail
(This message is not indicated in the
system message window but on the status
screen after system startup or self test has
executed)
The message is seen during start up due to the following
failure(s):
• AHRS ARINC 429 Receiver
• ADC ARINC 429 Receiver
• Mode S Address
• Factory Data CRC or Compatibility
• Config Data NVM CRC or Compatibility
• Other system functions indicated as failed.
1. Clear the failure by tapping the Restart button to perform
a warm startup.
2. The unit configuration data may be corrupted or missing.
Using the instructions provided in this manual to load the
configuration data
3. Replacement of the unit may be required. Contact ACSS
Field Service before removal.
TAS – External Degrade
TCAS – External Degrade
The message is seen if any of the following signals are
degraded:
• AHRS - ARINC 429 Input Bus
1. Try clearing the failure performing a warm startup by
tapping the Restart button.
2. If the problem continues, replacement of the unit may be
required. Contact ACSS Field Service before removal.