Lynx NGT-9000s
Installation Manual
Table 4-1: Troubleshooting
SYMPTOM
SCREEN CAUSE/CORRECTIVE ACTIONS
When touching the screen the
command function seems to
be slightly off from the center
of the screen symbol or area.
All
The screen calibration is out of tolerance.
1. Perform the Screen Calibration has described in
paragraph 4.3.1.
2. Contact L-3 Field Service before removal of unit.
Internal fan is always active.
MSG button on screen.
N/A
Loss of temperature sensor data. The message seen is “Unit
Over Temp Service Soon”.
1. Try clearing the failure by restarting the unit by tapping
the Restart button.
2. If in maintenance mode the fan remains active. This is
normal.
3. Check System Status Messages.
4. Check the Lynx MAT fault log.
5. Contact L-3 Field Service before removal of unit.
Message page contains
messages that do not indicate a
functional failure on the system
status page.
N/A
The following internal tests do not create a fail message in
the system status page.
•
Configuration Module Test
•
Configuration Module Configuration Validity
•
Mutual Suppression Bus Self-Test
•
Over-Temperature Monitor (in air)
•
Power Fail Monitor
Although no immediate loss of function is occurring, an
undesired condition is taking place. At the earliest
convenience, perform the following action:
1. Try clearing the failure by restarting the unit by tapping
the Restart button (or cycling power).
2. Contact L-3 Field Service before removal of unit.
Unit does not operate in normal
mode and starts in Bootloader
or maintenance mode.
MSG button on screen.
N/A
The following internal hardware test failures cause the unit to
automatically reset. This happens without cycling power to
the unit. If the hardware failure being detected does not
clear, a system fail message is sent.
•
ARINC 429 Receiver Loop Back Self-Test
•
Panel Mount Refresh Display Test
•
Panel Mount Frozen Display Test
•
SDRAM Self-Test
•
Persistent Memory Self-Test
•
FPGA CBIT Test/Monitor
•
System Clock Test/Monitor
•
RAM Continuous Monitor
•
NVM Copy Test
•
Flash Copy OPS Test
•
Flash Copy Airport DB Test
•
Flash Copy Map DB Test
•
SW Exception Interrupt Monitor
1. Cycle power to the unit.
2. Contact L-3 Field Service before removal of unit.
Page 4-4
Maintenance
0040-17001-01
January 15, 2015
Revision A
