Wanted circuit diagram SB11 BA11-VA shoe box, particularly for PSU

I have an old SB11-AA, BA11-VA shoe box, H9281 card frame, I can't find the psu model only Digital AB04409CY6 which I presume is the sn. The PSU is u/s does anyone know where I can find the circuit diagram and specs for the PSU?

At present I have the card cage and backplane out on the bench connected to an old PC psu, 13A +5v, 3 A +12v.

I have tried a few searches but very little seems to be available.


Thanks

Peter