User's Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion® HSD-440 Mark 2 Terminal
23-15-30 4-35
3 JUN 10
TEST AND FAULT ISOLATION
This chapter provides information required to determine the operational readiness of HSD-440 Mark
2 Terminals and aid service personnel in diagnosing system faults. The operational and diagnostic
tests described in this section require using the HSD-440 Mark 2 Terminal’s built-in diagnostic tool,
the MPU.
This chapter includes:
• Operational and Diagnostic Testing
• Troubleshooting and Fault Isolation
• Adjustment/Alignment Procedures
• Modification History
NOTE: Depending on the version of software installed, the MPU report and menu screens displayed
may differ from those shown as examples in this manual. The menu screens in this section
correspond to the HSD-440 Stand-Alone terminal in maintenance user mode.
1. Operational and Diagnostic Testing
This section includes the following sections:
• General
• Test and Fault Isolation Equipment Requirements
• Terminal Maintenance Port Utility
• Inmarsat Cause Codes
• Operational and Diagnostic Test Procedures
A. General
Usually, terminals require testing for one of the following reasons:
• To verify the operational readiness of the terminal during and after installation on an
aircraft
• To verify that a fault exists and produce system reports for troubleshooting purposes
• To verify the operational readiness of repaired LRUs during re-installation on an
aircraft
This section includes test and fault isolation procedures for the HSD-440 Mark 2
Terminals. All test and load procedures require the HSD-440 Mark 2 Terminal MPU,
which is accessed by connecting to the maintenance port of the terminal.
B. Test and Fault Isolation Equipment Requirements
Table 4-1 lists the equipment required to access the HSD-440 Mark 2 Terminal MPU and
perform operational and diagnostic testing and software loading on the HSD-440 Mark
2 Terminal.