VSVO Diagnostic Alarm

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Thread Starter

BK MEENA

In Regulator 7 VSVO Diagnostic Alarm was appeared and Reset automatically. Alarm was "ON card calibration voltage Range Fault" Fault Code 72

I go through the VSVO Card and diagnostic alarm in VSVO of Mark VI. THE alarm was found only in R processor only

The fault code appearing in the Alarm, was not able to understand.

Any body may please explain and suggest the preventive actions.

Thanks
 
Have you RTFM (Read the Manual)?

The Mark VI System Guide, GEH-6421, lists the Diagnostic Alarms for each of the VME-style cards in Vol. II. While the information may seem cryptic, it's all there is if one can't determine what the alarm message is trying to say from the context of the condition.

From Vol. II of GEH-6421:<pre>
Fault Fault Description Possible Cause
Code
72 Onboard Calibration Voltage Range Fault. A problem with the
The A/D calibration voltages read from Field Programmable Gate
the FPGA are out of limits, and the VSVO Array (FPGA) on the board
will use default values instead</pre>
[A/D stands for Analog-to-Digital]

This would suggest a problem with the VSVO card in <R>, but it's probably a very good idea to ensure there are no problems with field wiring and cabling (the cables connecting the VSVO to the TSVO), and it might also (though not likely) be a problelm with the TSVO.

Lastly, I don't understand the reference to "Regulator 7". Each VSVO card only has a maximum of four servo outputs (sometimes GE likes to use regulator and servo interchangeably).
 
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