HE4000 Encoding System
Troubleshooting
6.10 Initialization Self-Test Function
In addition to internal fault monitoring, the HE4000 microcontroller performs built-in-self-tests
(BIST) automatically during the initialization process. If a failure is detected, the LCD displays an
error message to alert the user to the problem. The error messages are displayed in the same
format as faults.
If the HE4000 did not display an error message during initialization, but is not operating properly,
perform the following diagnostic steps.
1.
Verify that the HE4000 is configured correctly for your requirements.
2.
If your system is configured properly, but still not operating correctly, issue the front panel
QuickSet>DVB>Enter
command or the
CM RESTORE DVB
remote command to reset
the HE4000 to the defaults.
3.
Reset any site specific custom configuration parameters.
4.
If the HE4000 is still not operating properly, query the current faults to determine if a
current fault exists. Correct all current faults.
5.
Query and review the fault history log. Correct all faults, if possible.
6.
Record the fault history.
If your HE4000 continues to fail, contact the ComtechTV Customer Support Department
for assistance.
6.11 Fault Summary
Most HE4000 faults are non-critical, informational faults. When faults occur, perform the following
steps:
1.
If the unit is functioning normally, clear the faults and continue operations.
2.
If the unit continues to fail:
•
Reset the box to the defaults
•
Configure the unit to site specific parameters.
•
If the unit is still not operating properly, query the current faults to determine if a
current fault exists. Correct all current faults.
•
Query and review the fault history log. Correct all faults, if possible.
•
Clear all faults.
•
Query the current faults and fault history log.
If the unit continues to fail, record the fault history and contact the ComtechTV Customer Support
Department for assistance.
All HE4000 faults, whether current faults, faults listed in the fault history log, or faults that cause
the fault relay to trip, are listed in alphabetical order in the following table:
01-0951-404 Rev B
6-7
