PSU Option A
Solder a bridge at J71 between pin 2 and 3. (This connects V1 common pin to ground).
Solder a bridge at J72 between pin 2 and 3. (This connects V1 output pin to 9v supply lines).
Solder a bridge at J73 between pin 1 and 2. (This connects 5v from power socket/switch to 5v supply lines).
Solder V1, B1, C1, C2, C3, C4, C11, C12.