Sun[TM] Fire 3800/4800/4810/6800/E2900/E4900/E6900/V1280 and Netra[TM] 1280/1290 Server: I/O Board (IB) power supply failures. (Doc ID 1017844.1)

Last updated on FEBRUARY 02, 2017

Applies to:

Sun Fire E4900 Server - Version Not Applicable and later
Sun Fire E6900 Server - Version Not Applicable and later
Sun Fire E2900 Server - Version Not Applicable and later
Sun Fire 4810 Server - Version Not Applicable and later
Sun Fire V1280 Server - Version Not Applicable and later
All Platforms

Symptoms

Symptoms
This document pertains to I/O Board (IB) power failures in Sun Fire[TM] servers.

These boards can be fail with scenarios similar to the following (note that the voltages reported will differ from case to case, and so to the IB location):

Main-SC:SC> poweron ib9
Dec 07 12:13:20 Main-SC Platform.SC: Attempt to power up /N0/IB9 failed: /N0/IB9 1.5V DC failed, observed: 0.0 volts /N0/IB9 3.3V DC failed, observed: 0.58 volts /N0/IB9: powered on

showenvironment may report ERROR LOW for the particular device and should report how low the voltage is as well, for example look at IB9 below:

sc% showenvironment -v


Slot    Device     Sensor       Min    LoWarn Value  HiWarn Max    Units     Age     Status
------- ---------- ------------ ------ ------ ------ ------ ------ --------- ------- ------


   ***** Results truncated for this example *****


/N0/IB7 Board 0    1.5 VDC 0    1.35   1.42   1.49   1.57   1.65   Volts DC  8 sec   OK
/N0/IB7 Board 0    3.3 VDC 0    2.97   3.13   3.31   3.46   3.63   Volts DC  8 sec   OK


   ***** Results truncated for this example *****


/N0/IB9 Board 0    1.5 VDC 0    1.35   1.42   0.0    1.57   1.65   Volts DC  8 sec   *** ERROR LOW ***
/N0/IB9 Board 0    3.3 VDC 0    2.97   3.13   0.58   3.46   3.63   Volts DC  8 sec  *** ERROR LOW ***

Errors seen in operation resulting in a domain outage may be like this:

Mar 09 14:12:30 Sunfire Platform.SC: [ID 920508 local0.notice] CPCI I/O Board (F3800) at /N0/IB8 Device poll caused: sun.serengeti.FailedHwException: (SdcAsic)Asic.getTemp: <strong>Path broken between CBH and SDC</strong>: IB8.sdc.10 (13000010) 

or also like this:

Mar 09 14:12:31 Sunfire Platform.SC: [ID 818977 local0.notice] /N0/IB8, sensor status, outside acceptable limits (7,1,0x503080d00050000)

or perhaps like this:

Mar 18 20:27:45 Sunfire Platform.SC: Device voltage problem: /N0/IB8 abnormal state for device: Board 0 1.5 VDC 0 Value: 0.0 Volts DC JtagController.tapWait: sun.serengeti.CommException: Path broken between CBH and SDC: IB8.sdc.b0 (130000b0)

Lastly, an error of this type in POST may appear as follows:

Hardware error occurred during Interconnect testing: Sun.serengeti.HpuFailedException: RepeaterHpu.verifyInterConnect: Slot 8: sun.serengeti.FailedHwException: Asic.getDeviceID: /partition0/domain0/IB8/ar0: sun.serengeti.CommException: Path broken between CBH and SDC: IB8.ar.0 (13080000): PCI I/O Board at /N0/IB8
Mar 18 20:29:01 Sunfire Domain-A.SC: Excluded unusable, unlicensed, failed or disabled board: /N0/IB8

NOTEs:

Cause

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