Fru Discovery Failures; Signal Failure - Oracle SPARC Enterprise M4000 Installation And Service Manual

3. If no other fault conditions are present, the following interrupt failures indicate
a component or connector failure.
You will have to swap out FRUs to determine which FRU contains the faulty
signal.
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D.2.6

FRU Discovery Failures

The following faults are diagnosed during FRU discovery.
D.2.6.1

Signal Failure

MSGID IOXSCF-8000-35 fault.chassis.iox.device.signal
Possible Cause
There is a signal failure in an I/O boat or chassis.
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Resolution
1. The following FMRIs indicate failure of boat presence signal:
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The fan controller on the centerplane did not detect presence of an I/O boat. Try
the I/O boat in an alternate bay to see if the problem follows the I/O boat and/or
try the I/O boat in a chassis that you know is working and valid to determine the
location of the failure.
hc:///iox=box_instance/iob=x
This indicates a DEMUX port interrupt failure. The signal spans the chassis and
the I/O boat. Swap the I/O boat and/or chassis to determine the location of the
failure.
hc:///iox=box_instance/iob=x/link=0
This indicates a failure between the interrupt concentrator in the I/O boat and
the microcontroller in the link card. Swap the link card and/or the I/O boat to
determine the location of the failure.
hc:///chassis=0/iou=x/pcislot=y/link=0
This indicates a failure between the link card and the host PCI Express slot.
Swap link cards and/or try a different host PCI Express slot to determine the
location of the failure.
hc:///iox=box_instance/boat_pres=x
hc:///iox=box_instance/iob=x/pres_sig=0
Appendix D Troubleshooting D-15