User's Manual

Page 4–95
18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
Call failure IRS information not
available
Activate
maintenance
reports 21 and 23
(See Figure 4–51)
• Check that the IRS
systems are powered on
and aligned.
• Check that connections to
the IRS systems are
secured.
• Check the polarity of IRS
input lines.
• If no IRS data is available,
use Menu 10 to manually
input navigational data to
point the antenna to a
preferred satellite location
and try the call again.
Call failure System does not log onto the
broadbeam
Activate
maintenance
reports 21 and 23
(See Figure 4–53)
• Check that the IRS data is
received and valid.
• Ensure that a valid FWD ID
is read
• Verify correct antenna
pointing.
• Ensure LES Access codes
are configured correctly.
• Verify all coax
connections.
Call failure System does not log onto the
correct Ocean Region
Activate
maintenance report
21 and 23
(See Figure 4–53)
• Check that the IRS data is
received and valid.
• Check for antenna
line-of-sight interference.
Call failure Unit is not transmitting Activate
maintenance
reports 21 and 23
Figure 4–52 – No
Signal
• Check for a defective or
loose RF cable.
• Verify the Rx RF level is
acceptable.
• Check RF power level
displayed in Maintenance
Port Menu Report Item 21;
signal strength should be
requested at 14.00 dBW
but in call should increase
to 22.5 dBW.
• Ensure the HSD is secured
properly to the ARINC
connector in the tray.
Table 4–27. Troubleshooting and Fault Isolation
Fault Description
Maintenance
Report
Check