KY11-LB behavior question
henk.gooijen at oce.com
Wed Mar 29 08:57:47 CST 2006
Again, from (my) memory :-)
If core is installed, the standby position is of no use.
To use the backup battery the 4th "power brick" is an H775 (IIRC)
which is needed for the battery charging/regulation.
If you have core in the machine, the 4th power brick in the power
supply (H765?), is the H754 for core (+20V and -5V).
> -----Original Message-----
> From: cctalk-bounces at classiccmp.org
> [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Julian Wolfe
> Sent: woensdag 29 maart 2006 16:27
> To: 'General Discussion: On-Topic and Off-Topic Posts'
> Subject: RE: KY11-LB behavior question
> Okay, it's just that I was testing the switch position just
> to see what it did, and everything went off including the
> front panel. I guess it's supposed to do that.
> I don't know why DEC didn't put a standby LED on the front -
> you'd think because it's already powering the MOS, you
> wouldn't care about powering some silly LED.
> What does that position do if core is installed?
> > -----Original Message-----
> > From: cctalk-bounces at classiccmp.org
> > [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Gooijen, Henk
> > Sent: Wednesday, March 29, 2006 12:49 AM
> > To: General Discussion: On-Topic and Off-Topic Posts
> > Subject: RE: KY11-LB behavior question
> > It's been a long time I had the switch at the Standby position.
> > *IIRC*, everything goes OFF, and only MOS memory is
> powered, but there
> > are a few wires on the backplane, where the power leads are
> > that connect the backup supply pins to the main supply pins. To use
> > the memory battery backup, you must remove these wires, but
> without a
> > battery and the charger plus a cable to the BA11 power
> supply, it is
> > useless.
> > - Henk.
> > > -----Original Message-----
> > > From: cctalk-bounces at classiccmp.org
> > > [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Wolfe, Julian
> > > Sent: dinsdag 28 maart 2006 22:52
> > > To: General Discussion: On-Topic and Off-Topic Posts
> > > Subject: KY11-LB behavior question
> > >
> > > I just have a question about Standby mode on an 11/34. I
> read it's
> > > supposed to leave power applied to MOS, but do the fans
> and whatnot
> > > turn off along with the CPU? Or are they supposed to
> stay on? My
> > > junk's in a BA11-K box.
> > >
> > >
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