Sony PCV-RX742 - Manual (Page 76)

 Slide the power supply unit up until it clears the chassis.
 Rotate the power supply to an upside down position and rest it on top of the chassis.
5. Handle the DIMM only by the edges, and remove it from its anti-static package.
6. Locate the notches on the bottom edge of the DIMM.
7. Align the DIMM over the slot.
To avoid damaging the DIMM slot, move the DIMM latches slightly outward to relieve pressure.
The module clicks into place.
8. Firmly insert the bottom edge of the DIMM into the slot.
9. Press down evenly against the DIMM's upper corners. The end latches snap into position to hold the module in
place.
10. Reinstall any components or add-on cards you removed.
11. Reinstall the power supply by following these steps:
 Rotate the power supply to its original position and slide it into the chassis until the tab snaps into
position.
 Replace the screw that secures the power supply to the chassis.
12. Replace the side cover. See Replacing the side cover .
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