Installation Manual

Lynx NGT-9000
Installation Manual
0040-17001-01 (Revision W) Maintenance Page 4-10
Table 4-1: Troubleshooting The Panel Mount NGT-9000
SYMPTOM
SCREEN
CAUSE/CORRECTIVE ACTIONS
• ADS-B Out Fail lamp
flashes (1 second On/Off)
for 2 minutes, and then
remains ON indefinitely
until a GPS position is
acquired.
• Compatible displays may
indicate “STANDBY” or
"DATA-FAIL" and WI-FI
information is not available.
Weather
GPS is Acquiring (In Air – no previous position fix).
1. The GPS may need up to 4 minutes to provide a
position after power is applied to the unit.
2. The GPS signal may be weak. Move the aircraft into an
area where the unit can acquire the GPS signal.
3. Cycle power to the unit.
4. Contact ACSS Field Service before removal of unit.
• Display indicator MAP FAIL
(red text) showing on FIS-B
application screen.
• ADS-B Out Fail lamp is
Flashing (1 second On/Off)
for 2 minutes and then
remains ON.
• Compatible displays may
indicate “STANDBY” or
"DATA-FAIL" and WI-FI
information is not available.
Weather GPS-Acquiring (previous position fix - On Ground or In Air)
This means only GPS data is not available however, the
GPS position was available once during this power ON or it
is shown when a fault is detected that prevents the FIS-B
data from showing on the screen.
1. The GPS signal may be weak. Move the aircraft into an
area where the unit can reacquire the GPS signal.
2. Cycle power to the unit.
3. Possible problem with L-Band antenna or internal
hardware.
4. Check System Status Messages.
5. Check the MPC (MAT) fault log.
6. Observe the GPS Receiver Information using the MPC
(MAT) (Service – GPS) for correct signal strength.
Verify that the signal bars are showing at least 40 -50%
in the GPS Receiver Information Packet. If this is not
the case, then check if the antenna cable loss is more
than 10 dB.
7. Check if 12V power is available at GPS antenna port,
when the unit is powered ON.
8. Contact ACSS Field Service before removal of unit.
• Display indicator TAWS
UNAVAILABLE (White text)
showing on TAWS screen.
• MSG button on screen.
TAWS Displayed when TAWS is not available.
1. Cycle power to the unit.
2. Check System Status Messages.
3. Check the MPC (MAT) fault log.
4. Contact ACSS Field Service before removal of unit.
• Display indicator TAWS
FAILED (Amber text)
showing on TAWS screen.
• MSG button on screen.
TAWS
Displayed when TAWS is Failed.
1. Cycle power to the unit.
2. Check System Status Messages.
3. Check the MPC (MAT) fault log.
4. Contact ACSS Field Service before removal of unit.
• Display indicator TERRAIN
DISPLAY FAILED (Amber
text) showing on TAWS
screen.
• MSG button on screen.
TAWS
Displayed when an alert fault causing loss of terrain display.
Alerting is still operational.
1. Cycle power to the unit.
2. Check System Status Messages.
3. Check the MPC (MAT) fault log.
4. Contact ACSS Field Service before removal of unit.