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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

2903.0. "Missing nuts on the DEChub 900 chassis" by GRANPA::DFAUST (Bad Things, man...) Wed Oct 25 1995 19:49

    I set up a new DEChub 900 today (serial # 1R52404006) that behaved
    strangely out of the box. I put a DEFMM in slot 8 and DETMMs in slot 7
    & 6. When I applied power to the hub, nothing came up. I removed all of
    the modules, and a few minutes later, the hub powered up. After some
    playing with the DEChub 900, I determined that the last four slots
    (5-8) would "power down" the hub with minimal pressure on the DH90
    connector on the backplane. I removed the back cover of the hub and
    found that the ?power bus bar? (I think) was not held onto the two
    posts there with nuts on the power supply side of the backplane. Also,
    the power bus bar on the lower part of the chassis (on the power supply 
    side) was missing a nut as well. I got the customers maintenance 
    department to dig up the proper sized nuts, installed them and the hub 
    came up just fine.
    
    Is this a known problem, or did I just have a really bad day?
    
    Dennis Faust
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