Fujitsu SPARC M12-1
 
Fujitsu SPARC M12-2S
 
Fujitsu SPARC M12-2
 

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In this Document

Purpose

Details

References

Applies to:

Purpose

Provide additional information for message ID: M12-device.fail_ddc

Fujitsu fault codes:

018F0000, 01910Df0, 01910DF1

Details

Type

Hardware Fault

   device.fail_ddc (MBU, PSU, CMU, XBU, PSUBP, XBBX)

Severity

Major

Description

A fault occurred when a DDC on an FRU signaled that it has failed.

A fault occurred when a DDC on an FRU listed below signaled that it has failed:

- MBU or PSUBP for M12-1
- CMUL, CMUU or PSUBP for M12-2
- CMUL, CMUU, PSUBP or XBU for M12-2S
- XBUX for XB-Box

Note that this fault may cause a simultaneous voltage warning event or undervoltage fault.

Automated Response

For M12-1 systems:
When failure is detected on MBU or PSUBP, the platform is powered-off and becomes unbootable

For M12-2 systems:

When failure is detected on CMUU, CMUL or PSUBP, the platform is powered-off and becomes unbootable.

For M12-2S systems:

- when failure is detected on CMUU, CMUL or PSUBP, the Ppar using the Building Block is reset, and the Ppar becomes unbootable.
- when failure is detected on XBU, the Ppar using the Building Block is reset, and the Ppar will start with one XB way deconfigured.

Impact

For M12-1 systems:
- when failure is detected on MBU, MBU is deconfigured.
- when failure is detected on PSUBP, PSUBP is deconfigured.
This means the platform is unbootable.

For M12-2 systems,

- when failure is detected on CMU, the CMU is deconfigured.
- when failure is detected on PSUBP, PSUBP is deconfigured.

This means the platform is unbootable.

For M12-2S systems,

- when failure is detected on CMU, the CMU is deconfigured, and the Building Block becomes unbootable.
- when failure is detected on PSUBP, PSUBP is deconfigured, and the Building Block becomes unbootable.
- when failure is detected on XBU, XBU is deconfigured, and the Ppar using this Building Block will start with one XB way deconfigured.

Indicted Hardware

Depending on where the failure is detected, the suspect is as listed below:

- MBU for M12-1: MBU is marked for replacement.
- PSUBP for M12-1: PSUBP is marked for replacement.
- CMUL for M12-2: CMUL is marked for replacement.
- PSUBP for M12-2: PSUBP is marked for replacement. There is also small chance that the problem is actually in CMUL.
- CMUL for M12-2S: CMUL is marked for replacement.
- PSUBP for M12-2S: PSUBP is marked for replacement. There is also small chance that the problem is actually in CMUL.
- XBU for M12-2S: XBU is marked for replacement. There is also small chance that the problem is actually in CMUL.
- XBUX for XB-Box: XBUX is marked for replacement. There is also small chance that the problem is actually in XSCFUX.
- PSU: The PSU is marked for replacement. There is a slight chance the MBU (for M12-1 systems), CMUL (for M12-2/M12-2S systems) or XSCFUX

  (for XB-Box) is at fault.

Suggested Action for System Administrator

The recommended service action for this event is to schedule replacement of the affected component(s) at the earliest possible convenience. Although the hardware may be functioning, it is not intended nor recommended that the faulted component(s) remain in the system for a prolonged period of time.

Refer to the following document for the latest procedures for displaying event content in preparation for submitting a service request and applying any post-repair actions that may be required.

PSH Procedural Article for Fujitsu M10 Diagnosis (Doc ID 1525156.1)

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