NETFINITY 7000-M10: I/O PLANAR SHORTING EXPOSURE

Subject: NETFINITY 7000-M10: I/O PLANAR SHORTING EXPOSURE
Updated Netfinity server RETAIN Tip: 

    Record number:       H13992
    Device:              D/T8680
    Model:               M
    Hit count:           UHC00000
    Success count:       USC0000
    Publication code:    PC50
    Tip key:
    Date created:        O99/07/27
    Date last altered:   A99/07/28
    Owning B.U.:         USA


Abstract: NETFINITY 7000-M10: I/O PLANAR SHORTING EXPOSURE

SYMPTOM:

Burn mark at stiffener post which passes thru planar and 12V power plane.
This post is located next to component C7 capacitor.

PROBLEM ISOLATION AIDS:

•  The system is a Netfinity 7000-M10 server, Type 8680, any Model.
•  The system is configured with 1-4 Processors.
•  The system's Diagnostics Fail.
•  The system has the described symptom.

FIX:

A new stiffener bar was designed and implemented on the I/O planar in January 1999.
A new FRU P/N 19L0140 was released and all old FRUs (P/N 93H9908) have been reworked.

DETAILS:

Shorting occurs due to a hook at end of stiffener post. This hook has been removed from part.
Hook was cutting into 12V plane.

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