User's Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion® HSD-440 Mark 2 Terminal
23-15-30 4-86
3 JUN 10
D. Fault Isolation and Diagnostic Procedures
This section provides basic information required for technical personnel to isolate faults
in HSD-440 Mark 2 Terminals. Where needed, refer to other sections of this manual
(which contain important information to aid in understanding the function of the terminal)
for additional information.
Fault isolation procedures are usually conducted on equipment that falls within one of
the following categories:
• Terminals that have failed to pass operational and installation verification procedures
• Terminals that have failed during service
• Terminals repaired and returned to service
CAUTION: BEFORE PROCEEDING WITH FAULT ISOLATION PROCEDURES,
REFER TO THE
"SAFETY ADVISORIES" ON PAGE INTRO-6.
(1) General
When performing fault isolation and diagnostic procedures, record and document all
test results, including LED functions and maintenance port data outputs (reports 21
and 23).
Enable reports 18, 19, and 20 (port), or items 6, 7, and 8 (starboard) to record
antenna, ACU, and DLNA related faults. Enable other reports as required.
(2) Saving a Diagnostic Reports File
Maintenance reports are helpful in troubleshooting the HSD-440 Mark 2 Terminal.
Capturing maintenance port information from the HSD-440 Mark 2 Terminal and
forwarding the file to Honeywell technical support staff will assist in troubleshooting
suspected HSD-440 Mark 2 Terminal problems.
Call drops after
successful
connection
If the RF signal fades significantly
(during a call), the connection may
drop.
NOTE: A sudden, severe aircraft
banking angle may
obstruct the signal long
enough (>15 sec.) to drop
a call.
Activate reports
21 and 23
• Check signal strength.
For Swift 64, C/No greater than or
equal to 53.2
dB.
• Make sure that there is a clear,
unobstructed, line of sight to the
satellite.
• Select an alternate satellite or
beam and try your call again.
NOTE: This troubleshooting
procedure works if you are
located where more than
one beam overlaps or
satellite is in view.
Table 4-24 Troubleshooting and Fault Isolation (Continued)
Fault Description
Maintenance
Report
Check