Resolution; Interrupt Signal Failures; Causes - Sun Microsystems SPARC Enterprise T5120 Installation And Service Manual

D.6.5.2

Resolution

Swap the link cable.
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Swap the link cards.
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D.6.6

Interrupt Signal Failures

I2C components in the FRUs generate interrupts to report hardware state changes
and alarm events. Error messages are generated if a problem is discovered during an
interrupt signal test, or if an interrupt cannot be cleared during normal interrupt
processing.
Note – Wait at least 5 minutes after FRU discovery for all failures to be reported
If I2C access failures are reported along with the interrupt signal failure, then the
interrupt signal error is likely caused by the I2C device access failure.
D.6.6.1

Causes

Side effect of other fault conditions present in the system.
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Connector failure for interrupt signals that span multiple FRUs.
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Failed FRU.
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D.6.6.2 Resolution
Some fault conditions or component failures will result in interrupts that cannot
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be cleared. First resolve all other failure conditions and check if interrupt failures
are no longer present.
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If no other fault conditions are present, the following interrupt failures indicate a
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component failure isolated to a single FRU.
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There is an interrupt failure for a component in the boat.
D-14 External I/O Expansion Unit Installation and Service Manual for SPARC Enterprise T5xxx Servers • April 2011
I2C access failure can result in interrupt failures in multiple areas of the system.
Voltage rail failures in a boat will result in VSEQ interrupt failures.
Some power supply failures will cause FANCTRL interrupt failures.
IOX@nnnn/IOBn INTCONC
IOX@nnnn/IOBn ECB
IOX@nnnn/IOBn VSEQ