---------------------------------------------------------
            - Sun Proprietary/Confidential: Internal Use Only -
---------------------------------------------------------------------  
                        FIELD INFORMATION NOTICE
               (For Authorized Distribution by Sun Services)

FIN #: I1118-1

Create Date: Jul/14/04

SunAlert: No

Top FIN/FCO Report: No

Products Reference: Sun Blade 1500

Product Category: Desktop / System Component

Product Affected: 

Systems Affected:
-----------------  
Mkt_ID   Platform   Model   Description                    Serial Number
------   --------   -----   -----------                    -------------
  -        A43      All     Sun Blade 1500                      -  


X-Options Affected:
-------------------
Mkt_ID    Platform   Model     Description                 Serial Number
------    --------   -----     -----------                 -------------
  -          -         -           -                            -

Parts Affected: 

----------------------
Part Number       Description   	          Model
-----------       -----------   	          -----
375-3128-xx       ASSY OEM 1X1.062GHZ 0MB           -

References: 

BugID: 5069786 - M/B insertion in Chassis can cause No Power-UP symptom due 
                 to 3.3V-> GND short.

Issue Description: 

Sun Blade 1500 Workstations may fail to power up due to an incorrectly
installed System Board.  Guide collars on the chassis can cut into the 
System Board, causing a short between the 3.3v rail and ground.  If this
occurs, the system will not power up, and it will appear to be a Power Supply 
or System Board malfunction.

This issue could potentially affect any currently released Sun Blade 1500
system if the System Board was not properly installed into the chassis at
the factory.

When the System Boards were assembled into the case kits (chassis), in some 
cases they were not placed into the correct position.  The System Board was 
slightly crooked.  This could cause a short between the 3.3V and ground layers 
because the sharp guide collar cuts into the board when not positioned 
correctly. This causes a "no power" situation when the mounting screws are 
tightened. 

There are 9 screws that secure the System Board to the chassis, three 
rows of three.  The two holes containing the chassis guide collars are the 
middle top and the middle bottom holes.  The following picture illustrates the 
position of the 2 chassis guide collars (red circles) and the 7 additional 
screw mounting holes (blue circles) on the System Board.

   http://sdpsweb.central/FIN_FCO/FIN/FINI1118-1_dir/SPE/SB1500.pdf

This is a delicate failure in the sense that, in some cases, just replacing 
the power supply is enough to jar the System Board out of the shorted position,
and the system is able to power on.  This can cause misdiagnosis in the field, 
and is something to be aware of when troubleshooting.

Engineering is developing a new design for the chassis guide collars.  Because 
the guide collars are a part of the system chassis there will be no way to 
replace these in the field.  Once the new design is chosen, it will be 
implemented in manufacturing for all new chassis.

Implementation: 

---
        |   |   MANDATORY (Fully Proactive)
         ---    
         
  
         ---
        |   |   CONTROLLED PROACTIVE (per Sun Geo Plan) 
         --- 
         
                                
         ---
        | X |   REACTIVE (As Required)
         ---

Corrective Action: 

The following recommendation is provided as a guideline for authorized
Sun Services Field Representatives who may encounter the above
mentioned issue.

1. When installing a System Board, or when there is a "no power" situation,
   make sure to seat/reseat the System Board to verify that the guide collars 
   are aligned correctly in the System Board holes. 

2. Tighten the screws and attempt to power up the system.  If there is still 
   no power,  there may be another issue and further troubleshooting may 
   be necessary.

Comments: 

None. 


============================================================================

Implementation Footnote: 

i)   In case of MANDATORY FINs, Sun Services will attempt to    
     contact all affected customers to recommend implementation of 
     the FIN. 
   
ii)  For CONTROLLED PROACTIVE FINs, Sun Services mission critical    
     support teams will recommend implementation of the FIN  (to their  
     respective accounts), at the convenience of the customer. 

iii) For REACTIVE FINs, Sun Services will implement the FIN as the   
     need arises.
----------------------------------------------------------------------------
 
All released FINs and FCOs can be accessed using your favorite network 
browser as follows:
 
SunSolve Internal Access:
_______________________
 
* Access the SunSolve Online URL at http://sunsolve.Central/

* From there, select the appropriate link to browse the FIN or FCO index.

Internet Access:
_______________
 
* Access the top level URL of  https://spe.sun.com


FIN/FCO Homepage Access: 
_________________________
 
* Access the top level URL of http://sdpsweb.Central/FIN_FCO/index.html

* From there, select the appropriate link to query or browse the FIN and
  FCO Homepage collections.

To submit either a FIN or FCO refer to the following URLs for templates
and instructions;

*  For FCO: http://pronto.central/fco.html
*  For FIN: http://pronto.central/fin.html
--------------------------------------------------------------------------
General:
--------
* Send questions or comments to finfco-manager@Sun.COM
---------------------------------------------------------------------------