Troubleshooting
98-158751-C Chapter 7: Maintenance and troubleshooting 7-9
7.5.3 Initial troubleshooting
Overview
This section describes an initial check of the primary functions of the AVIATOR 700S
System, and provides some guidelines for troubleshooting, if one of the checks should
fail.
Means available for troubleshooting
The following means are available for troubleshooting:
• LEDs and BITE messages. Generally, if a fault occurs without any obvious reason, it
is always recommended to observe the LED behaviour. For information on the
function of the LEDs refer to Status signalling on page 7-7. For a list of all the BITE
codes and Cause codes, refer to the appendix System messages on page B-1.
• Maintenance interface. For troubleshooting errors in the CSDU, connect to the
Micro USB maintenance port on the front plate of the CSDU and extract the relevant
log files. Refer to the Operational User Guidance [10] for instructions how to extract
and analyze the log files.
Problem What to do
No GPS signal:
Interference from
satcom antenna on
GPS antenna
If the existing GPS antenna on board the aircraft does not
provide sufficient filtering of the satcom antenna signal to
provide a usable GPS signal, you must replace the existing GPS
antenna with a GPS antenna that has a satcom filter.
Registration for
voice or data on the
BGAN network not
possible
In case the system cannot register properly for voice or data
service, check with your Service provider that the USIM cards in
the SCM are not blocked.
Table 7-6: Initial troubleshooting
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