PSU schematic of the PDP-11/05 (11/10) needed

[Ed]

Hi All,

I have a PDP-11/05 (11/10) in a 5.25" box version which I'm putting
together. It's going to be equipped with 8Kb of core and a RX02
floppy interface. When powering up, led's come on, but there is not
much action to get. Look like the -15V of the PSU is not working
properly.

The PSU is a different one compared to the well known bricks used
in BA11 boxes. This one delivers +5V, +15V and -15V and is labelled 5409728.

Anybody have a schematic of this PSU by any chance?

Thanks,

Ed