65
Description Negative 28 Volt Power Low ([ ] Counts)
Possible Cause
• WNPS daughterboard failure (for TVBAH#A or S#A)
• Failure of N28 power supply on TVBAS2B or TVBAH#B
• I/O pack P28 voltage is low
• The terminal board has failed
Solution
• Check the power to the I/O pack.
• Replace the WNPS daughterboard.
• Replace the terminal board.
• Replace the I/O pack.
66
Description Dual Ethernets not supported with 10 ms frame rate
Possible Cause The second Ethernet port is connected, but not supported for a 10 ms frame rate.
Solution
• Remove the second Ethernet connection to the YVIB.
• Increase the frame rate to 20ms.
• Upgrade the I/O pack.
67
Description Pack internal reference voltage out of limits
Possible Cause The I/O pack failed to auto-calibrate when powered on.
Solution Replace the I/O pack.
68
Description Internal daughterboard temperature limit exceeded ([ ] °F)
Possible Cause
• The cabinet temperature is too high.
• The I/O pack overheated.
• If the cabinet temperature is within the specified temperature limits, the I/O pack internal daughterboard temperature
sensor may have failed.
Solution
• Check the environmental controls applied to the cabinet containing the I/O pack. Operation will continue correctly
beyond these temperature limits, but long-term operation at elevated temperatures may reduce equipment life.
• If the I/O pack internal daughterboard temperature sensor failed, then replace the I/O pack.
YVIB Vibration Monitor Modules GEH-6855_Vol_II System Guide 273
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