Sony PCV-R528DS - Manual (Page 61)

Removing, Installing, and Replacing Components 53
Replacing the Power Supply
1
Rotate the power supply horizontally by 180 degrees clockwise and
lower it into the chassis until it is flush against the square hole at the
rear of the chassis.
2
Slide the power supply forward (away from the 3½” drive bay) until
the power supply latches onto the chassis tabs.
3 Replace the three screws that secure the power supply to the rear of
the chassis.
4
Replace the screen that secures the power supply bracket to the
chassis.