Document Audience:INTERNAL
Document ID:A0248-1
Title:A limited set of Sun Fire System Boards may be vulnerable to Uncorrectable Errors in L2 SRAM.
Copyright Notice:Copyright © 2007 Sun Microsystems, Inc. All Rights Reserved
Update Date:Fri Nov 05 00:00:00 MST 2004

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                        FIELD CHANGE ORDER
            (For Authorized Distribution by Sun Services)
 
FCO #: A0248-1
Status: inactive
Synopsis: A limited set of Sun Fire System Boards may be vulnerable to Uncorrectable Errors in L2 SRAM.
Date: Nov/5/2004
SunAlert: 101566
DPCO: 471, 451.D
ECO: WO_30083
URL: http://onestop.eng/qco/tools/uniboard_sram_lookup_tool.shtml
     http://sdpsweb.central/FIN_FCO/FCO/FCO_A0248-1_Dir/SPE/SRAM_Cust_Letter.sxw
     http://onestop.eng/qco/uniboard/docs/sram_fco_procedure.html
     http://onestop.eng/qco/sram_faq.html
Top FIN/FCO Report: Yes

PRODUCT REFERENCE: Sun Fire 3800/4800/4810/6800, Sun Fire 12K/15K, 
                   Sun Fire V1280, Netra 1280
Product Category: Server / System Component
Product Affected: 
Systems Affected:
------- --------
Mkt_ID    Platform      Model   Description           Serial Number
------    --------      -----   -----------           -------------
  -         A40          All    Sun Fire V1280            -
  -         N40          All    Netra 1280                -
  -         F3800        All    Sun Fire 3800             -
  -         F4800        All    Sun Fire 4800             -
  -         F4810        All    Sun Fire 4810             -
  -         F6800        All    Sun Fire 6800             -
  -         F12K         All    Sun Fire 12K              -
  -         F15K         All    Sun Fire 15K              -


X-Options Affected
--------- -------
Mkt_ID     Platform      Model    Description        Serial Number
------     --------      -----    -----------        -------------
  -          -             -          -                   -
Parts Affected: 
Part Number              Description                         Model    Type
----------------------   -----------                         -----    ----
540-6078-03 (or below)   CPU/Mem, 900 MHz 2-way Uniboard      -        -
540-6079-03 (or below)   CPU/Mem, 900 MHz 4-way Uniboard      -        -
540-6080-03 (or below)   CPU/Mem, 1050 MHz 2-way Uniboard     -        -
540-6081-03 (or below)   CPU/Mem, 1050 MHz 4-way Uniboard     -        -
540-6082-03 (or below)   CPU/Mem, 1200 MHz 2-way Uniboard     -        -     
540-6083-03 (or below)   CPU/Mem, 1200 MHz 4-way Uniboard     -        -
540-6085-xx              CPU/Mem, Uniboard, 900 MHZ, LW8      -        -
540-5849-xx              CPU/Mem, Uniboard, 1200MHz, LW8      -        -
501-6701-xx              MaxCPU 900 MHz                       -        -
501-6465-xx              MaxCPU 1050 MHz                      -        -
501-6466-xx              MaxCPU 1200 MHz                      -        - 


Note: The above list only reflects FRU/CRU part numbers.  For a complete
      list of part numbers reference the CORRECTIVE ACTION section below.
References: 
Issue Description: 
Certain Sun Fire 3800/4800/4810/6800, Sun Fire 12K/15K, Sun Fire V1280 and 
Netra 1280 System Boards manufactured with a specific SRAM may be vulnerable 
to component weakness resulting in potential system interrupts due to L2 SRAM 
Uncorrectable Errors (UEs).

This issue only occurs within a subset of total SRAM supply and not all SRAM 
are impacted. The probability of a system being affected by this issue is 
dependent on the amount of SRAM contained within the system. This, in turn, is 
dependent on the number of CPUs within the system. 

Should the described issue occur, Sun Fire 3800/4800/4810/6800, Sun Fire 
12K/15K, Sun Fire V1280, and Netra 1280 systems may experience messages 
similar to the following:

    Error 0x71 (Syndrome 0x71)
    L2 cache UE events (WDU,CPU,EDU,UCU)
      
    
Identifying Affected Systems
----------------------------
   Suspect SRAM components may have shipped in the affected platforms 
   during the period from August 2001 to August 10, 2004.

   It is not possible to know in advance which systems may contain 
   suspect SRAM components.  A System Board SRAM Look-Up Tool has been 
   created to aid in this identification.  It can be downloaded from:
 
      http://onestop.eng/qco/tools/uniboard_sram_lookup_tool.shtml
  
   Determining if a system contains boards at risk is a two step process. 
   This consists of FRUID collection followed by FRUID analysis.  
   The latest details for this process can be viewed at the "onestop" 
   URL above.  

This issue has been root caused as component weakness in a specific group of 
SRAM components supplied by one vendor.  These SRAM may fail at a higher rate 
than would normally be expected.

The SRAM component was susceptible to a soft "latch up" condition due to the 
design of the SRAM cell array and the particular manufacturing process.  Soft 
latch up may contribute to L2 cache SRAM UEs.  To correct the issue, the 
supplier made changes to their manufacturing process. 

The issue has been addressed in Sun Manufacturing by cutting in known good SRAM
components as of August 10, 2004.  Systems or System Board replacements shipped
after this date are not impacted.  DPCOs 471 and 451.D address this issue at 
the repair depots.

See the System Board SRAM FAQ for more in-depth information.

   http://onestop.eng/qco/sram_faq.html
Implementation: 
---
| X |   MANDATORY (Fully Pro-Active)
 ---

 ---
|   |   CONTROLLED PRO-ACTIVE (per Sun Geo Plan)
 ---

 ---
|   |   UPON FAILURE
 ---
Replacement Time Estimate: 
0.5 hours
Special Considerations: 
This FCO will have a time zone phased release based on material
readiness as follows:

                   Readiness Date         
                   --------------         
   US/Canada       11/18/2004     
   Ltn America     11/25/2004       
   EMEA            11/23/2004                                                                                   
   APAC            11/30/2004            
   Japan           11/30/2004     

The above dates represent when each timezone has determined that
it will be materially ready to support this FCO.

The following Time Zone Representatives will collect the results (.csv files) 
for impacted customer systems generated from the proactive server and the 
search tool.  They will also serve as the focal points for FRU allocation 
and customer prioritization.
   
    APAC: May-Inn Wong (may-inn.wong@sun.com)
    Canada: Rick Mohammed  (fazil.mohammed@sun.com)
    EMEA: Renate Heidegger (renate.heidegger@sun.com)
    Japan: Yuji Hashimoto (yuji.hashimoto@sun.com)
    Latin America: Marcos Omura (marcos.omura@sun.com)   
    US: Lynn Wilson (fco_248_core@sun.com)
Corrective Action: 
Note  There will initially be a limited supply of remedial parts for this 
****  FCO.  The early release of the FCO will allow account teams to begin
      collecting data on impacted systems and to move current CIC work
      into the FCO process.  Please work with your Time Zone FCO 
      Representative to determine material availability and to prioritize
      customer remediation.

1) A detailed process for implementing this FCO is provided at

   http://onestop.eng/qco/uniboard/docs/sram_fco_procedure.html
   
   This process should be followed to ensure a coordinated approach for
   identifying affected systems, prioritizing customers, and tracking
   on-site hardware replacement.  Send any questions about the process
   to sram-fco-help@sun.com.

2) After an affected system has been identified, replace System Boards
   containing suspect SRAM components.  The System Board SRAM Lookup Tool 
   will identify which System Boards are affected and will translate an
   installed board part number into one of the following FRUs.

   540-6085-xx   CPU/Mem, Uniboard, 900 MHZ, LW8
   540-5849-xx   CPU/Mem, Uniboard, 1200MHz, LW8
   540-6078-xx   CPU/Mem, 900 MHz 2-way Uniboard
   540-6079-xx   CPU/Mem, 900 MHz 4-way Uniboard
   540-6080-xx   CPU/Mem, 1050 MHz 2-way Uniboard
   540-6081-xx   CPU/Mem, 1050 MHz 4-way Uniboard
   540-6082-xx   CPU/Mem, 1200 MHz 2-way Uniboard
   540-6083-xx   CPU/Mem, 1200 MHz 4-way Uniboard
   501-6701-xx   MaxCPU 900 MHz
   501-6465-xx   MaxCPU 1050 MHz
   501-6466-xx   MaxCPU 1200 MHz

Acceptable replacement FRUs will either be at a specific dash revision,
or will have a DPCO 471 or 451.D label, or will have a 559 prefix to the
part number.  The 559 part numbers were created especially for this FCO.
   
   
Replace This         With This    Or This       Or This (DPCO #471 or #451.D)
-------------------  -----------  -----------   -----------------------------
540-6078-03 or less  540-6078-04  559-0072-xx   540-6078-xx + DPCO label
540-6079-03 or less  540-6079-04  559-0067-xx   540-6079-xx + DPCO label
540-6080-03 or less  540-6080-04  559-0073-xx   540-6080-xx + DPCO label
540-6081-03 or less  540-6081-04  559-0068-xx   540-6081-xx + DPCO label
540-6082-03 or less  540-6082-04  559-0074-xx   540-6082-xx + DPCO label
540-6083-03 or less  540-6083-04  559-0069-xx   540-6083-xx + DPCO label
540-6085-xx               -       559-0071-xx   540-6085-xx + DPCO label
540-5849-xx               -       559-0070-xx   540-5849-xx + DPCO label
501-6701-xx               -           -         501-6701-xx + DPCO label
501-6465-xx               -           -         501-6465-xx + DPCO label
501-6466-xx               -           -         501-6466-xx + DPCO label
   
Note: If a Capacity On Demand (COD) enabled System Board is replaced, 
      the replacement FRU must be configured for COD.  See FIN I0912-1
      for instructions.
                        
3) The following Customer Letter may be used as an aid in communicating this 
   issue to customers.

   http://sdpsweb.central/FIN_FCO/FCO/FCO_A0248-1_Dir/SPE/SRAM_Cust_Letter.sxw
Comments: 
Below is a list of FRU part numbers and the non-FRU part numbers
that are their equivalents.

  Part Number	Description
  -----------	-----------
. 540-6078	CPU/Mem, 900 MHz 2-way Uniboard

  	540-4984
  	540-5051
  	540-5094
  	540-5095
  	540-5821
  	540-5822
  	540-5823
  	540-5824
  	540-6078
  	540-6197
  	540-6198
  	540-6199

. 540-6079	CPU/Mem, 900 MHz 4-way Uniboard

  	540-4934
  	540-4990
  	540-4991
  	540-4992
  	540-4993
  	540-5052
  	540-5474
  	540-5825
  	540-5826
  	540-5827
  	540-5829
  	540-5830
  	540-6079

. 540-6080	CPU/Mem, 1050 MHz 2-way Uniboard

  	540-5272
  	540-5623
  	540-5795
  	540-5796
  	540-5797
  	540-5798
  	540-6080
  	540-6149
  	540-6150
  	540-6205

. 540-6081	CPU/Mem, 1050 MHz 4-way Uniboard

  	540-5267
  	540-5780
  	540-5799
  	540-5800
  	540-5801
  	540-5803
  	540-5819
  	540-5820
  	540-5858
  	540-6081
  	540-6152
  	540-6153

. 540-6082	CPU/Mem, 1200 MHz 2-way Uniboard

  	540-5682
  	540-5691
  	540-6082
  	540-6156

. 540-6083	CPU/Mem, 1200 MHz 4-way Uniboard

  	540-5603
  	540-5604
  	540-5605
  	540-5684
  	540-5685
  	540-5732
  	540-5740
  	540-5799
  	540-5858
  	540-5859
  	540-6010
  	540-6083
  	540-6088
  	540-6160

. 540-6085	CPU/Mem, Uniboard, 900 MHZ, LW8

  	540-4979
  	540-5245
  	540-5402
  	540-6085
  	541-0180

. 540-5849	CPU/Mem, Uniboard, 1200MHz, LW8

  	540-5849
 	540-5869
 	540-5870
 	540-5872
  	540-5981

. 501-6701	MaxCPU 900 MHz

	501-6138
	501-6430
	501-6701

. 501-6465	MaxCPU 1050 MHz

	501-6365
	501-6465

. 501-6466	MaxCPU 1200 MHz

	501-6466



________________________________________________________________________

NOTE: FCO Tracking Instructions for Radiance/SPWeb:
--------------------------------------------------

If a Radiance case involves the application of an FCO to solve a customer
issue, please complete the following steps in Radiance/SPWeb prior to
closing the case:
 
    o Select "Field Change Order" in the REFERENCE TYPE field.

    o Enter FCO ID number in the REFERENCE ID field.
      For example; A0222-1.

If possible, include additional details in the REFERENCE SUMMARY field
(ie. Upgrade complete, customer declined, etc.)
________________________________________________________________________

Implementation Notes
--------------------

In case of "Mandatory" FCOs, Sun Services will attempt to contact
all known customers to recommend proactive implementation.

For "Controlled Proactive" FCOs, Sun Services mission critical
support teams will initiate proactive implementation efforts for
their respective accounts, as required.

For "Upon Failure" FCOs, Sun Services and partners will implement
the necessary corrective actions as the need arises.

The CIC process must be used for proactive hardware replacement
requests when an FCO is classified as "Upon Failure".


Billing Information
-------------------

Warranty: Sun will provide parts at no charge under Warranty
          Service.  On-Site Labor Rates are based on specified
          Warranty deliverables for the affected product.

Contract: Sun will provide parts at no charge.  On-Site Labor Rates
          are based on the type of service contract.

Non Contract: Sun will provide parts at no charge.  Installation by
              Sun is available based on the On-Site Labor Rates
              defined in the Price List.

________________________________________________________________________

All FCO documents are accessible via Internal SunSolve.  Type "sunsolve"
in a browser and follow the prompts to Search Collections.

For questions on this document, please email:

        finfco-manager@Sun.com

The FIN and FCO homepage is available at:

        http://sdpsweb.central/FIN_FCO/index.html

For more information on how to submit a FCO, go to:

        http://pronto.central/fco.html

To access the Service Partner Exchange, use:

        https://spe.sun.com

________________________________________________________________________
Statusinactive