I've had a couple of Kikusui PAD300-1A DC supplies (0 to 300V DC, 1A) for a while, but couldn't find schematics online.
The manual as an English language pdf is online from Kikusui here:
http://www.kikusui.co.jp/kiku_manuals/P/PAD300_1A_E2.pdfHowever although it lists schematics in the index, they are missing.
I recently found an original paper manual, in Japanese although it *does* have schematics.
The Japanese text seems to match the English manual, ie the English one is a direct translation.
So here are the scanned schematics:
Sheet 1 is chassis wiring and several small PCBs.
A poor quality print, that I've cleaned up as best I can.
It refers to other diagrams:
* A-075 (linear regulator control)
* A-004 (pre-regulator phase control)
Sheet 2 is of PCB A-075. Better print quality.
The schematic for PCB A-004 is not present in my manual, and never was. Apparently they chose not to include it.
Anyway some schematics is better than none.
Just posting here so they are findable online, in case anyone else needs them. Zip, 495KB.