Tech diagram for Dell power supply.

I need electronics circuit diagram for power supply used
on
Dell XPS Generation 3, 4 and 5.

Power supply model: NPS-460BB.
Manufacturer of power supply unit: Newton Power Ltd.
Dell part #J3676

It is the same power supply used for others like the
Dimension 650, only that with the Dim. 650 some of the
output cables had been omitted, but is the same circuitry.