[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference mvblab::alphaserver_4100

Title:	AlphaServer 4100

Moderator:	MOVMON::DAVISS

Created:	Tue Apr 16 1996
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	648
Total number of notes:	3158

615.0. "ALPHASERVER 4000 won't power up" by CSCMA::KOTOCH () Wed May 21 1997 12:57

    Hi All,
    I hope someone can help here since Colorado support
    has not been able to, I have an Alphaserver 4000 (DURANGO)
    that is new out of the box, the system has 2 466 mhz cpu's
    and 512mb of EDO ram, 3 fddi cards, video, enet, and kzpsa
    options on the first PCI bus, anytime an option is put into
    the 2nd PCI backplane the system will not power up. I have 
    already replace the obvious (2nd PCI mothe board, 2nd IOD
    module, main mother board, PCM, and both power supplies and
    the problem persists. Any help will be greatly appreciated.
    
    Thanks,
    Artie

T.R	Title	User	Personal Name	Date	Lines
615.1	"not power up" clarification	POBOXB::STEINMAN		`Wed May 21 1997 13:03`	10
	Hi Artie, When you say the machine will not power up, do you mean that the machine powers itself off? Or do you mean that power remains on, but the system does not initialize and give a console prompt? Thanks mo
615.2	power up clarification	CSCMA::KOTOCH		`Wed May 21 1997 14:15`	6
	Sorry for the confusion, the system starts to power up, the OCP comes on for 2 seconds then flickers a few times then out it goes thus shutting off the AC. If I remove the options from the 2nd PCI bus the system runs just fine.
615.3		MAY21::CUMMINS		`Wed May 21 1997 15:51`	2
	Do you have confidence in the wall power? Are there other comparable machines hanging off the same power strip?
615.4		CSCMA::KOTOCH		`Wed May 21 1997 16:21`	4
	Yes the power on the bus is good cause there are 2 other identical systems on the same strip and have pci options on both buses and are running just fine.
615.5	DEFPA revs?	LEDER2::BOWSE		`Wed May 21 1997 16:41`	4
	What type and rev are your DEFPAs? - Walt
615.6	Strip is out of power	STAR::JACOBI	Paul A. Jacobi - OpenVMS Development	`Wed May 21 1997 20:15`	12
	>>> 2 other identical systems on the same strip and have pci options on >>> both buses and are running just fine. Plug the system directly into the wall outlet, or use a seperate power strip. Three systens on the same power strip is probably exceeding the power available. I seen the same behavior with Sable systems in our lab. -Paul
615.7		CSCMA::KOTOCH		`Thu May 22 1997 11:38`	5
	The system's AC is from an overhead bus bar not a power strip. So the overloading is not an issue here, I even had the site electrician check the phases on the bus bar for load balancing. Artie
615.8		CSCMA::KOTOCH		`Thu May 29 1997 16:50`	6
	Hi everyone who responded, The system power is fine now, I spoke with one of the design engineers (Mark K.) in Maynard, and it turns out that the 3.3v power harness for the 2nd pci backplane was not installed. After installing it the system powers up ok wit options in both pci backplanes and diags/unix run fine. Thanks to all and especiall Mark.