H750 (PDP-11) power on?

From: Tom Uban <uban_at_ubanproductions.com>
Date: Wed May 26 16:24:01 2004

Hi John,

My 11/05 has a power switch on the front panel. The 11/10
is just a full height version of the 11/05 AFAIK. Is there
not a key switch on the front panel?

In any event, the 11/05 uses an H750 as well, so this schematic
should help you out:


I know that I found an 11/10 schematic in one of the usual places
too, but I cannot find it at the moment.


At 04:54 PM 5/26/2004 -0400, you wrote:

>I have a PDP-11 here that I'd ike to power on but there's
>no power switch that I can locate.
>The power supply is a H750 and the A/C entry panel is a BC05t
>with two separate lower power three pin connectors on it.
>I pinned them both out as:
> +33V, external red wire
> 0V, external white wire
> gnd,external green wire
>They're the same shape&size connectors as the four
>pin 5v/12v ones used everywhere today.
>Figured that two of these wires could go to an "on" switch but thought
>it would be better to ask than to just go around shorting things to see
>what happened.
>Thanks for any help,
>John A.
Received on Wed May 26 2004 - 16:24:01 BST

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