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_at_dunnington.u-net.com]
Sent: Thursday, November 07, 2002 2:45 PM
To: cctalk_at_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
Received on Thu Nov 07 2002 - 17:20:00 GMT