Multiple Fans Reported as Failed on T5220 & T5240 (Doc ID 1490986.1)

Last updated on NOVEMBER 15, 2016

Applies to:

Sun SPARC Enterprise T5240 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise T5140 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise T5120 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise T5220 Server - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

Fan removal or failure occurs on multiple fans or SP powers off HOST and on HOST power up [or while running Snapshot (normal mode data_set=full)] SP powers off HOST quickly.

Example 1 - Fan module issue Only (FMx)

Post Status: Passed all devices
ID Time FRU Class Fault
1 Jun 21 04:27:55 /SYS/FANBD0/FM1 SP detected fault: Required FAN at FANBD0/FM1 is not present.< ---------
2 Jun 15 15:38:47 /SYS/FANBD0/FM1 SP detected fault: TACH at /SYS/FANBD0/FM1/F0 has reached low non-recoverable threshold.
3 Jun 15 15:38:42 /SYS/FANBD0/FM1 SP detected fault: TACH at /SYS/FANBD0/FM1/F1 has reached low non-recoverable threshold.
4 Jun 15 15:38:57 /SYS/FANBD0/FM0 SP detected fault: TACH at /SYS/FANBD0/FM0/F0 has reached low non-recoverable threshold.
5 Jun 15 15:38:53 /SYS/FANBD0/FM0 SP detected fault: TACH at /SYS/FANBD0/FM0/F1 has reached low non-recoverable threshold.
6 Jun 21 04:27:11 /SYS/FANBD0/FM2 SP detected fault: Required FAN at FANBD0/FM2 is not present. < ---------
sc>
console msg 20min after 2nd reset Post Status: Passed all devices
ID Time FRU Class Fault
1 Jun 21 04:27:55 /SYS/FANBD0/FM1 SP detected fault: Required FAN at FANBD0/FM1 is not present. < ----------
2 Jun 15 15:38:47 /SYS/FANBD0/FM1 SP detected fault: TACH at /SYS/FANBD0/FM1/F0 has reached low non-recoverable threshold.
3 Jun 15 15:38:42 /SYS/FANBD0/FM1 SP detected fault: TACH at /SYS/FANBD0/FM1/F1 has reached low non-recoverable threshold.
4 Jun 15 15:38:57 /SYS/FANBD0/FM0 SP detected fault: TACH at /SYS/FANBD0/FM0/F0 has reached low non-recoverable threshold.

Fault event description:Faulty fan module is at location /SYS/FANBD0/FM2 < ----------
SunHwTrapFanFault
sunHwTrapSystemIdentifier =
sunHwTrapChassisId = BEL0845FTL
sunHwTrapProductName = T5240
sunHwTrapSuspectComponentName = /SYS/FANBD0/FM2
sunHwTrapFaultClass = system.fault
sunHwTrapFaultCertainty = 100
sunHwTrapFaultMessageID =
sunHwTrapFaultUUID =

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From example 1 - the issue is with Fan(s) module 1 and 2, they should be replaced and no other components!

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Cause

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