Asset ID:	1-73-1000970.1
Update Date:	2010-08-30
Keywords:

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Solution Type  FAB (standard) Sure

Solution  1000970.1 :   When Ultra 40 is powered up there will be a sudden loss of power and video signal will be lost  


PreviouslyPublishedAs
201288

Product
Sun Ultra 40 Workstation

Date of Resolved Release
02-NOV-2006

Part

• Part No: 375-3343-01
• Part Description: Motherboard, RoHS:Y

Impact

The system shuts down during the bootup process and will remain off until the Motherboard is replaced.

Contributing Factors

Sun Ultra 40 Workstations with Motherboard part number 375-3343-01 are impacted.

Motherboard part number 375-3343-01 (with Purge label P00120383) is NOT affected.

There does not appear to be any data to support test escapes resulting in field failures due to this issue.  At this point it is believed that this issue was contained by the test process initiated via StopShip/Purge P00120383.

Symptoms

There will be sudden loss of power and the video signal will be lost when an affected Ultra 40 is powered on.

Both the outside Front Panel Power LED and the "power good" LED on the motherboard will not be lit.  The LED on the motherboard is D18, which is located between D19 and D20.

Root Cause

Mitac has discovered a hardware design overspec situation on their motherboard which was the cause of the Electrical Over Stress (EOS) on the chips.  Mitac has made motherboard design changes to input resistor and diode values to address this issue, and the qualifications performed have shown excellent results.

Corrective action was made available in Manufacturing on November 2, 2006 via ECO# WO_35262.  Corrective action was made available in Services on February 19, 2007 via GSAP# 3820.

Resolution

Replacement Time Estimate: 30 minutes

Hot Swappable: No

Upon failure only, replace Motherboard as follows;

• replace 375-3343-01 with 375-3343-02

Motherboard part number 375-3343-01 with Purge label P00120383 is NOT affected.

Previously Published As
102839
Internal Comments

This asset was fully evaluated as an FCO by Sun Quality and found not to meet criteria due to the small exposure and potential for experiencing this issue.

Related Information

• ECO: WO_35262
• GSAP: 3820
• WWSSP: P00120383

Internal Contributor/submitter
[email protected]

Internal Eng Business Unit Group
KE Authors

Internal Eng Responsible Engineer
[email protected], [email protected]

Internal Services Knowledge Engineer
[email protected]

Internal Kasp FAB Legacy ID
102839

Internal Sun Alert & FAB Admin Info
Critical Category:
Significant Change Date: 2007-03-26
Avoidance: Hardware
Responsible Manager: [email protected]
Original Admin Info: WF - i have been given OK to release 26-Mar-2007 - joe is on vacation
WF - started workflow. - Joe 3/9/07
- this FAB initially submitted back in mid-February but was redirected
to the FCO process as it involved hardware replacement. - Joe 3/9/07
WF - added affected part number section. - Joe 3/10/07
WF - question from review needs clarification from Responsible Eng.
- Joe 3/12/07
WF - Dan Fuller stated that Frank Cervantes is now the Responsible
Eng for this product. Awtg his response. - Joe 3/14/07
WF - still awtg a response from Frank Cervantes and ping him once
again. - Joe 3/20/07
WF - added LED verbage to Symptoms section as received from
Frank Yang. - Joe 3/26/07
Internal SA-FAB Eng Submission
Purpose: The purpose of this template is to document and outline
the Communication Plan for the Field Change Order (FCO)
analysis process for a product quality defect that may
require an FCO for remediation. Format of published FCO
may differ.

BU Name:SG Product Group

Product Name: Sun Ultra 40 WS

Date: 2/15/07

Status: Active

Audience: Sun Internal & Service Partners (via SPE portal)

__________________________________________________________________


Synopsis: At start-up there will be "no Power" or "no video".

Implementation:

[X] Reactive (Upon Failure)
[ ] Controlled Proactive (H/W FABs require Customer List and Customer Letter)
[ ] Mandatory (Requires Customer List and Customer Letter)


PRODUCT AFFECTED:

Systems Affected:
------- --------
Mkt_ID Platform Model Description Serial Number
------ -------- ----- ----------- -------------
U40 Sun Ultra 40 WS All

Affected X-Options: (Xoption Part Number / Description)



AFFECTED PARTS:

Part Number Description
---------------- -----------
375-3343-01 MB assembly

ISSUE DESCRIPTION:

Impact: No power or no video at power up.



Contributing Factors:

Failure will only happen at power up.

Symptoms:

'no power' or 'no video' at power up

Root Cause:

Mitac has discovered a hardware design overspec situation on their motherboard which was the cause of the EOS on the chips. Mitac has made motherboard design changes to input resistor and diodes values to address and the quals performed have shown excellent results.


REPLACEMENT TIME ESTIMATE: 30 min

CORRECTIVE ACTION:

Replace Motherboard with 375-3343-02 if there is no power or no video at Power up


Final Resolution:

Upon failure with the symptoms forementioned, replace motherboard with
375-3343-02.


Identifying and Remediating an Affected System:

(Instructions/details on how to identify if a system is affected or not.)


COMMENTS:

(Any other comments/information not listed elsewhere in FAB.)

References:

* BugID:
* Escalation ID:
* Sun Alert:
* Pending Patches:
* Resolution Patches:
* Other References:
* Reference Manual:
* Related URL(s):
* ECO: # 35262
* GSAP: Purge: # P00120383 GSAP# 3820
* WW Stop Ship:
* Radiance ID:

Contacts:

* Contributor: Mustapha Ouaddi
* Responsible Engineer: Dan Fuller
* Responsible Manager: Buck Wing
* Business Unit Group: SG Product Group

[X] SSG WGS (Workgroup Systems)
[ ] SSG NSN (Netra Systems and Networking)
[ ] SSG ES (Enterprise Systems)
[ ] SSG SW (Platform Software)
[ ] SSG PNP (Processor)
[ ] NSG (Network Systems Group)
[ ] NWS (Network Storage)
[ ] OP/N1 RPE (Operating Platforms/N1 Revenue Product Engin.)
[ ] JPSE (Java Platform Sustaining Engineering)
[ ] JWSSE (Java Web Services Sustaining Engineering)
[ ] USG (User Software Group)
[ ] Other - Please specify
Product_uuid
7b070932-47f1-11da-ac39-080020a9ed93|Sun Ultra 40 Workstation

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