Installation Manual

Table Of Contents
Lynx NGT-9000
Installation Manual
0040-17001-01 (Revision W) Maintenance Page 4-25
Table 4-3: Troubleshooting The Remote Mount NGT-9000R
SYMPTOMS CAUSE / CORRECTIVE ACTIONS
The following message
displayed on the CP-2500:
ADS-B IN UNAVAIL - POS
(NGT-9000R)
Release 2.0 or later
No valid track/heading information:
1. ADS-B Data is not available e.g. on the ground with no
heading or track input (track invalid when ground speed is <
7kts). This can be overcome via a ground override step
shown in section 3.10.2.1.
2. Insufficient GPS quality:
The GPS may be acquiring a signal. The GPS may
need up to 4 minutes to provide position.
The GPS signal may be weak. Move the aircraft into an
area where the unit can receive a better GPS signal.
Cycle power to the NGT-9000R and the CP-2500.
If the problem continues, replacement of the unit may
be required. Contact L-3 Field Service before removal.
ADS-B OUT FAIL displayed on
CP-2500.
Release 2.0 or later
The ADS-B OUT function of the Lynx NGT-9000R has failed or
GPS position has not been available for more than 2 minutes.
1. The GPS may need up to 4 minutes to provide position.
2. Cycle power to the NGT-9000R and the CP-2500.
3. If the problem continues, replacement of the unit may be
required. Contact ACSS Field Service before removal.
Any of the following messages
displayed on the CP-2500:
ADS-B IN FAIL
FIS-B FAIL
TAS/TCAS FAIL
Release 2.0 or later
The function on the Lynx NGT-9000R has failed or the Lynx
NGT-9000R is not communicating with the CP-2500.
1. Cycle power to the NGT-9000R and the CP-2500.
2. If the problem continues, replacement of the unit may be
required. Contact ACSS Field Service before removal.
NO LRU RESPONSE displayed
on CP-2500.
Release 2.0 or later
The Lynx NGT-9000R is not communicating with the CP-2500.
1. Cycle power to the NGT-9000R and the CP-2500.
2. If the problem continues, replacement of the unit may be
required. Contact ACSS Field Service before removal.
CONFIG MODULE - SERVICE
SOON displayed on CP-2500.
Release 2.0 or later
A problem has been detected with the configuration module.
Replacement of the configuration module may be required.
Contact ACSS Field Service before removal.
Any of the following messages
displayed on the CP-2500:
TAS/TCAS Degraded
ADS-B IN Degraded
ADS-B OUT Degraded
FIS-B Degraded
Release 2.0 or later
A Degraded message is not a failure, and is an indication to the
user that the function is operating in a degraded condition.
CP-2500 will not allow
operational mode changes to on
or alt, (stuck in standby).
Release 2.1 or later
External "Standby" discrete is active (grounded).
Place external "Standby" discrete in Off (open) position.