User's Manual

23-15-30 4-50
24 JUN 09
EMS SATCOM
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-440 High-speed Data Terminal
Table 4-22 Troubleshooting and Fault Isolation
Fault Description
Maintenance
Report
Check
Red LED
remains on
after powering
up sequence
• HPA fault View initial
power-up
display of the
HSD-440
terminal MPU
Verify that:
• the terminal is well seated in the
ARINC tray
• the LES ID Code is programmed
(Menu 3, option I).
HPA error
status
• reporting invalid SSM
• HPA not reporting
status word 143
• HPA not reporting
maintenance word
350
• HPA maintenance
word reporting
ARINC error
• HPA maintenance
word not reporting
HGA antenna
• HPA maintenance
word reporting
Voltage Standing
Wave Ratio (VSWR)
error
• HPA maintenance
word reporting
Random Access
Memory (RAM) error
• HPA reporting
Read-only Memory
(ROM) error
• HPA maintenance
word reporting power
supply error
• HPA maintenance
word reporting
temperature error
To obtain an
explanation of
the HPA error
status, in Menu
1, press Y
• Check that the external power source
is properly connected and meets
installation requirements.
• Check that the transmit path from
HSD-440 terminal output (MPC1) to
the antenna subsystem (e.g., coaxial
cables, splitters, and relays).
• Check that the installation location
meets the RTCA/DO-160E
environmental specifications.
• Check for proper fan-tray operation
and air-cooling.
• Verify the fan-tray plug distribution is
as per the installation requirements.