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Versatile Interface Board
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Appendix C.4 Troubleshooting the VIB
Appendix C.4.1 UIB State Not Displayed on the Front Panel
• Check that no other faults are present on the display panel.
• Call Liebert for instructions on how to enable the VIB functionality.
Appendix C.4.2 VIB in “Disabled” or “Not Available” State
• Attempt to enable the VIB by pressing F6 (Setup Parameters), then F3 (UIB Enable).
• Verify that the cable to the VIB is plugged in properly.
• Verify power is present on the Auxiliary I/O board. This is indicated by illumination of LED
“LD2”.
• Verify power is provided to the UIB. This is indicated by illumination of “LD1” on the Auxiliary
I/O board and “LD21Pentagon on the UIB. Note that “LD2”on the Auxiliary I/O board will be illu-
minated only if the UIB is connected.
• Check the continuity of the cable from pin to pin.
Appendix C.4.3 Inputs Not Recognized
• Verify power is present at the VIB.
• Verify the VIB is enabled on the display panel.
• Verify that the proper voltage is being supplied to the input.
• Verify that the LED indicator corresponding to the input illuminates when the input signal is
applied.
Appendix C.4.4 Outputs Not Asserted
• Verify power is present at the VIB.
• Verify the VIB is enabled on the display panel.
• Verify that the LED indicator corresponding to the output illuminates when the output is
asserted.