test-drb November 2002

test-drb@ccmp.vtda.org

252 participants
556 discussions

Bringing up a 10 years dormant VAX 11/750

by Fred.van.Kempen＠microwalt.nl

> Agreed, I don't think it would be good if we were to have a > list member killed by a classic computer... Directly or > indirectly... Well, I'd rather be zapped by an PDP-11/70 than a stray bullet >from some *hole "out there"..... just a thought :) Stone would read: "Here lies Fred, powered by PDP-11/70.. he couldnt take the power..." :) --f

22 years, 1 month

Best version of AIX for my RS6000

by xds_sigma7＠hotmail.com

OK, I'm *jealous*... S/390 card for anything = drool... Um, I have a 4381... Sure your S/390 is faster, etc. but my S/370XA could crush it flat ;p Will J _________________________________________________________________ Surf the Web without missing calls! Get MSN Broadband. http://resourcecenter.msn.com/access/plans/freeactivation.asp

22 years, 1 month

VAXvector seen on epay...

by rschaefe＠gcfn.org

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2068622725 says it all. No connection to seller... Bob

22 years, 1 month

VAX and Alpha K/V/M cables.

by allain＠panix.com

> 1) I think you mean D9. K/V/M here means keyboard/video/mouse. In this case (there's video on a 3w3) it is more a K/M. The D15 (yup) looks like the KVM's used elsewhere (vaxStations), hence this new question. > 3) This subject was discussed here at great > length not more than a week or two ago. Nope, I wouldn't want to start that one again. John A.

22 years, 1 month

875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU

by Fred.van.Kempen＠microwalt.nl

OK... so your backplane is hosed. Do you have a dummy load to "load" the PSU with? It probably complains about it not having a load to work with, hence the REG fail....methinks your PSU is fine, just not the backplane or its power harness. Remember that cable harness insulation plastic rots... as well :) --fred > -----Original Message----- > From: John Willis [mailto:cctalk-admin@classiccmp.org]On > Behalf Of John > Willis > Sent: Friday, November 08, 2002 1:43 AM > To: cctalk(a)classiccmp.org > Subject: RE: 875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU > > > This is very interesting. Removing everything from the > backplane results > in only the REG FAIL light coming on. No more +5V FAIL or +2.5 FAIL. > > Any ideas? > -----Original Message----- > From: Fred N. van Kempen > Sent: Thu 11/7/2002 4:50 PM > To: cctalk(a)classiccmp.org > Cc: > Subject: RE: 875 Power Controller/H7104C 2.5VDC > PSU/H7104D 5VDC PSU > > Yes. Or in the "final" part of the PSI itself. Because it > is shorting, the load of the PSU, it's killing the regulators. > Or, such is my guess.. > > --f > >

22 years, 1 month

875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU

by jwillis＠arielusa.com

This is very interesting. Removing everything from the backplane results in only the REG FAIL light coming on. No more +5V FAIL or +2.5 FAIL. Any ideas? -----Original Message----- From: Fred N. van Kempen Sent: Thu 11/7/2002 4:50 PM To: cctalk(a)classiccmp.org Cc: Subject: RE: 875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU Yes. Or in the "final" part of the PSI itself. Because it is shorting, the load of the PSU, it's killing the regulators. Or, such is my guess.. --f

22 years, 1 month

875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU

by pete＠dunnington.u-net.com

On Nov 8, 0:50, Fred N. van Kempen wrote: > Yes. Or in the "final" part of the PSI itself. Because it > is shorting, the load of the PSU, it's killing the regulators. > Or, such is my guess.. I'd agree. I don't know if the regulators are like those in -11's, but if they are, and can run safely for a short time without load, I'd try it with all the boards removed. Anyone know if this is safe? -- Pete Peter Turnbull Network Manager University of York

22 years, 1 month

875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU

by Fred.van.Kempen＠microwalt.nl

Yes. Or in the "final" part of the PSI itself. Because it is shorting, the load of the PSU, it's killing the regulators. Or, such is my guess.. --f

22 years, 1 month

875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU

by jwillis＠arielusa.com

Load-level? As in on the backplane? -----Original Message----- From: Fred N. van Kempen [mailto:Fred.van.Kempen@microwalt.nl] Sent: Thursday, November 07, 2002 4:29 PM To: cctalk(a)classiccmp.org Subject: RE: 875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU John, "Over Current"- smells like a load-level short. --fred > -----Original Message----- > From: John Willis [mailto:jwillis@arielusa.com] > Sent: Friday, November 08, 2002 12:22 AM > To: cctalk(a)classiccmp.org > Subject: RE: 875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU > > > The lights do come on, it's just that the ones that come on are > > (o) = lit, ( ) = not lit > > ( ) Power OK > ( ) Over Voltage > (o) Over Current > (o) +2.5V Fail > ( ) +5V Fail > (o) Reg Fail > ( ) Over Temp > > (o) Power > > Have the printsets now, will probably take both units apart for > Inspection and cleaning. > > John > > -----Original Message----- > From: Peter Turnbull [mailto:pete@dunnington.u-net.com] > Sent: Thursday, November 07, 2002 2:45 PM > To: cctalk(a)classiccmp.org > Subject: Re: 875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU > > > On Nov 7, 13:43, John Willis wrote: > > Anyone have any documentation on these units as far as > > What to do when the fail lights come on? > > The Field Maintenance print sets for the PSUs and the power controller > are available at http://208.190.133.201/decimages/moremanuals.htm > (part of the DFWCUG Historical CPU Preservation Society). They are > BIG files. > > If an 875 power controller is like an 876, then if the lights > don't come > on, reset your breaker :-) > > I don't know about the H7104's (I've never seen one up > close). I assume > there is something plugged into the 3-pin Power Bus connector, or you > have the three-way switch in the "local" position, otherwise it won't > turn on. > > -- > Pete Peter Turnbull > Network Manager > University of York >

22 years, 1 month

875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU

by Fred.van.Kempen＠microwalt.nl

John, "Over Current"- smells like a load-level short. --fred > -----Original Message----- > From: John Willis [mailto:jwillis@arielusa.com] > Sent: Friday, November 08, 2002 12:22 AM > To: cctalk(a)classiccmp.org > Subject: RE: 875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU > > > The lights do come on, it's just that the ones that come on are > > (o) = lit, ( ) = not lit > > ( ) Power OK > ( ) Over Voltage > (o) Over Current > (o) +2.5V Fail > ( ) +5V Fail > (o) Reg Fail > ( ) Over Temp > > (o) Power > > Have the printsets now, will probably take both units apart for > Inspection and cleaning. > > John > > -----Original Message----- > From: Peter Turnbull [mailto:pete@dunnington.u-net.com] > Sent: Thursday, November 07, 2002 2:45 PM > To: cctalk(a)classiccmp.org > Subject: Re: 875 Power Controller/H7104C 2.5VDC PSU/H7104D 5VDC PSU > > > On Nov 7, 13:43, John Willis wrote: > > Anyone have any documentation on these units as far as > > What to do when the fail lights come on? > > The Field Maintenance print sets for the PSUs and the power controller > are available at > http://208.190.133.201/decimages/moremanuals.htm (part > of the DFWCUG Historical CPU Preservation Society). They are > BIG files. > > If an 875 power controller is like an 876, then if the lights > don't come > on, reset your breaker :-) > > I don't know about the H7104's (I've never seen one up > close). I assume > there is something plugged into the 3-pin Power Bus connector, or you > have the three-way switch in the "local" position, otherwise it won't > turn on. > > -- > Pete Peter Turnbull > Network Manager > University of York >

22 years, 1 month

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test-drb November 2002