EMS报错An attempt to read from a device on the PDHC's SM bus has failed.

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WBEM Severity: MAJOR
Event Summary: An attempt to read from a device on the PDHC's SM bus has failed.
Event Description: An attempt to read from a device on the PDHC's SM bus has failed. The devices on the SM bus are the CPU modules' FRU EEPROMs, the CPU modules' Processor Information ROMs, and the CPU modules' thermal sensors. The Data field information contains information that can identify the exact device that has failed. Refer to the Cell ERS for a mapping of SM Bus device addresses to devices. Data Bytes[0-1]: Reserved Data Bytes[2-3]: SM bus Device Address Data Bytes[4-5]: Starting Word Address Data Bytes[6-7]: Size of attempted access (in bytes).
Probable Cause: Unknown
Event Category: System Hardware
Event Sub-Category: Unknown
Cause 1 : A hardware fault has occurred.
Recommended Action1 : Contact HP Support personnel to troubleshoot the Cell Board, Cell Power Board, and PDH Daughtercard.