Sony PCV-R558DS - Manual (Page 51)

Removing, Installing, and Replacing Components 37
Removing a Memory Module
You may need to remove a memory module if you change the memory
configuration or replace a bad module.
13 Remove the cover (see “Removing the Cover” on page 22).
14
Locate the memory module you wish to remove.
!
Before opening the system unit, save any open files, exit Windows, turn off
the power of the computer and all attached peripherals, and then unplug the
power cord.
✍
The memory modules are located beneath the power supply. You
do not need to remove the power supply to reach the memory
modules.
KY0073.VSD