IBM 64F0874 PIN OUTS INFO REQUESTED

[Markku]

I have an IBM API-9219 REV :A IBM P/N:64F0874  IBM FRU NO:64F1073  DATE :9114  PC PSU . I WOULD LIKE TO CONVERT THIS PC PSU TO A DESKTOP PSU FOR MY OWN HOBBY USE, BUT THERE SEEMS TO BE NO INFO ANYWHERE AS TO WHAT PINS ON WHICH CONNECTOR NEED TO BE
GROUNDED OR SHORTED OR WHAT EVER TO TURN ON THIS POWER SUPPLY. THE CONNECTOR THAT SEEMS TO BE FOR POWER CONTROL IS MARKED AS 'P2' AND HAS 7 PINS , WIRES ARE BROWN,BLACK,ORANGE,WHITE,YELLOW,BLUE,AND BLUE. DOES ANYONE HAVE INFO ON HOW I TURN THIS SUCKER 'ON' AS HATE TO THROW IT OUT AS THE PC IT CAME OUT OF HAS BEEN DISPATCHED TO THE GARBAGE AS DUE TO BLOWN HARD DRIVE.