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Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

3125.0. "DECHUB 900 ISSUES..NEED ANSWERS" by OTOOA::MEVANS () Fri Jan 05 1996 15:35

    Gooday..
    
    I am writing this in concern to the issues I have seen locally on a
    hospital site with 29 Dechub 900's, running since the summer of 95.
    First problem we encountered was a hub burnt at the AC input. Checking
    into this there was a series of hubs starting at AS425XXXXX which were
    suspect to this problem. The fix is to replace the power supply
    backplane module,,,so where is this fix or FCO??
    
    Now another problem has come to light with seating of full height
    modules not making good contact to the backplane due to a combination
    of heat and weight. Again there is a fix in the form of a backplane
    reinforcement kit,,,where is it??  The module that seems most suspect
    is the 900FP module which will reset itself and either comes back or
    has to be manually reseated. Moving or replacing the module makes no
    difference.
    
    Being a large install we need to get these issues resolved as locally
    this could become high focus.
T.RTitleUserPersonal
Name		DateLines
3125.1Seen the same...hub burnedPTOJJD::DANZAKPittsburgher �Mon Jan 08 1996 19:5614
    We just had a hub burn up at a customer (i.e. smoke, modules melted,
    etc.)  We've sent it back to Michelle Bigelow for evaluation.
    
    With some rev A0x hubs there was a 'hub stiffener' problem. These were
    metal inserts put into the hub to 'stiffen' the backplane.  There was
    also a restraining bar on the top of the hub mounting brackets that
    prevented flexion.  I think that this was missing on earlier hubs.
    
    So, hope that helps. Nat Rounds or Bob Battersby may have more info on
    both.
    
    Regards,
    j
3125.2ECO ????OTOOA::MEVANSTue Jan 09 1996 08:2910
    GOODAY..
    
    Thanks for the info and yes I have heard there is a fix to stiffen the
    backplane but what is it and how do I get it.
    
    As per my note to expand.... all 29 hubs that are installed fall into
    the suspect range for the burning backplane modules, but is that the
    same range that require the stiffeners???
    
    So is there an annnounced ECO?? FCO???
3125.3Your note was forwarded to Support folks here at LKG...NETCAD::BATTERSBYTue Jan 09 1996 12:077
    RE: .0 
    I've forwarded your base note to the NPSS support folks, and 
    asked that they have someone get in touch with you with the
    appropriate info on how to help you resolve your customers issues 
    with their HUBs. 
    
    Bob
3125.4We need an ECO/FCO field updatePTOJJD::DANZAKPittsburgher �Wed Jan 10 1996 09:087
    This clearly points to the need for an ECO/FCO field update process. 
    It's a lot easier to work with a large customer (i.e. Dupont, MCI,
    CompUserve) about an FCO/upgrade problem BEFORE the fire in their
    machine room rather than after....
    
    my 2�
    j
3125.5More problems with HubsTMAWKO::RMANDRYALL THINGS MUST PASSWed Jan 10 1996 16:115
    
    Add this problem too. I got a installed base of 24 Dechub 900. They all
    ran pretty good until last month. So far I have replaced two backplanes
    and an array of modules and power supplies. It seems we did not have
    that many problems till the H7894 was released.
3125.6More on New Style Power SuppliesCSC32::BLACKMERRalph Blackmer - Mission Critical Support TeamThu Jan 11 1996 14:4217
I just returned from a site visit with a Mission Critical customer who has
replaced 5 of the new style power supplies in the past 4 weeks on "1" of their
DEChub900s. They are very concerned as a failure in just this hub, brings down a
better part of their production facility.

They have already replaced a hub backplane too. I will post details on revisions
but this is becoming "very visible" of late.

Are there issues with the new style power supplies? I also read about the
possible ECO/FCO to "firm up" the backplane in the hubs? Can I audit the
customer hubs and see what the current status is on installed hardware to
prevent flex in these? I would believe they do not have the necessary equipment
in place to prevent this.


Rb