Document fins/I0642-1
FIN #: I0642-1
SYNOPSIS: DC-DC Converter module
DATE: Mar/16/01
KEYWORDS: DC-DC Converter module
---------------------------------------------------------------------
- Sun Proprietary/Confidential: Internal Use Only -
---------------------------------------------------------------------
FIELD INFORMATION NOTICE
(For Authorized Distribution by SunService)
SYNOPSIS: Improper insertion of the DC-DC convertor module on certain
systems may cause burned pins on the mother board connector.
TOP FIN/FCO REPORT: No
PRODUCT_REFERENCE: DC-DC convertor module insertion.
PRODUCT CATEGORY: Server / Service
PRODUCTS AFFECTED:
Mkt_ID Platform Model Description Serial Number
------ -------- ----- ----------- -------------
Systems Affected
----------------
- A27 ALL Ultra 80 -
- A33 ALL Enterprise 420R Server -
- Netra t ALL Netra t 1405 Server -
- Netra t ALL Netra t 1400 Server -
X-Options Affected
------------------
- - - - -
PART NUMBERS AFFECTED:
Part Number Description Model
----------- ----------- -----
F501-5168-17 ASSY,QUASAR,MB,0 MEG -
F300-1407-06 DC/DC CONVERTER,125 -
REFERENCES:
BugId: 4409625: Burnt Connector on DC-DC & M/B Issue.
4386603: Smoke on the Ultra80(420) DC-DC converter fan connector.
4393276: The connector between DC-DC Converter and Mother Board
in E420R.
URL: http://sdpsweb.EBay/FIN_FCO/FIN/FINI0642-1_dir/DC1.jpg
http://sdpsweb.EBay/FIN_FCO/FIN/FINI0642-1_dir/DC2.jpg
PROBLEM DESCRIPTION:
This FIN highlights the need for proper installation procedure of the
DC-DC Converter Module for Ultra 80, E420 and Netra 1400/1405 systems.
If the procedures are not followed properly, these systems may
experience burning/smoke at the connector interface between the mother
board. The affected systems may fail to power-up and boot.
The DC-DC converter module for Ultra 80, E420R and Netra 1400/1405
systems plugs into a connector on the mother board. The above problem
may occur if DC-DC module P/N 300-1407-06 is installed incorrectly onto
mother board P/N 501-5168-17 during replacement in the Field.
Specifically, the problem may occur if the module is tilted at an angle
such that the blind mating connectors (J4105 & J4108 on the mother
board) make only partial contact with the corresponding pins on the
DC-DC module.
The DC-DC module is secured to the mother board by a single captive
screw on one side. It is possible to place the module onto the mother
board and to tighten the captive screw but leave the far end of
connector J4108 unseated. The module will be tilted to one side.
See the following two pictures for further clarification. The proper
positioning of the DC-DC module is shown by:
http://sdpsweb.EBay/FIN_FCO/FIN/FINI0642-1_dir/DC1.jpg
Improper positioning of the DC-DC module is shown by:
http://sdpsweb.EBay/FIN_FCO/FIN/FINI0642-1_dir/DC2.jpg
The Sun engineering group is looking into the feasibility of a
permanent solution to the issue, ie. a mechanical solution which would
retain the module at both ends of the connecting surface.
IMPLEMENTATION:
---
| | MANDATORY (Fully Pro-Active)
---
---
| | CONTROLLED PRO-ACTIVE (per Sun Geo Plan)
---
---
| X | REACTIVE (As Required)
---
CORRECTIVE ACTION:
Authorized Service Representatives are advised of the following
recommendation when replacing or installing the above mentioned
motherboard/DC-DC module assembly:
1) Push the DC-DC converter into connector J4108 and J4105 located
on the edge of the motherboard.
2) Verify that the slot on the DC-DC converter mates with the slot
on the plastic CPU shroud.
3) Ensure that mating connectors are fully pushed home at either
side of module, and that the bottom of the module is parallel to
the motherboard top surface.
4) Tighten the captive screw with a #2 Phillips screwdriver.
COMMENTS:
----------------------------------------------------------------------------
Implementation Footnote:
i) In case of MANDATORY FINs, Enterprise Services will attempt to
contact all affected customers to recommend implementation of
the FIN.
ii) For CONTROLLED PROACTIVE FINs, Enterprise 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, Enterprise Services will implement the FIN as the
need arises.
----------------------------------------------------------------------------
All released FINs and FCOs can be accessed using your favorite network
browser as follows:
SunWeb Access:
--------------
* Access the top level URL of http://sdpsweb.ebay/FIN_FCO/
* From there, select the appropriate link to query or browse the FIN and
FCO Homepage collections.
SunSolve Online Access:
-----------------------
* Access the SunSolve Online URL at http://sunsolve.Corp/
* From there, select the appropriate link to browse the FIN or FCO index.
Supporting Documents:
---------------------
* Supporting documents for FIN/FCOs can be found on Edist. Edist can be
accessed internally at the following URL: http://edist.corp/.
* From there, follow the hyperlink path of "Enterprise Services Documenta-
tion" and click on "FIN & FCO attachments", then choose the
appropriate
folder, FIN or FCO. This will display supporting directories/files for
FINs or FCOs.
Internet Access:
----------------
* Access the top level URL of https://infoserver.Sun.COM
--------------------------------------------------------------------------
General:
--------
* Send questions or comments to finfco-manager@Sun.COM
---------------------------------------------------------------------------
Copyright (c) 1997-2003 Sun Microsystems, Inc.