Replacing The Memory Module - Lenovo ideacentre AIO 520 Hardware Maintenance Manual

Step 9. To install the new optical drive:
a. Insert the tabs on the optical drive bezel into the corresponding holes in the new optical drive,
and then push the bezel back into position.
b. Gently push the disk forward until it snaps into position.
c. Slide the new optical drive into the drive bay.
Step 10. Reattach the rear cover and stand base.

Replacing the memory module

Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo
recommends that you use a blanket, towel, or other soft cloth to protect the touch screen from scratches or
other damage.
Step 1. Remove any media from the drives, shut down the operating system, and turn off the computer and
all attached devices.
Step 2. Unplug all power cords from electrical outlets.
Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to Locating connectors,
controls and components to locate the various connectors.
Step 4. Remove the stand base. Refer to Removing the stand base.
Step 5. Remove the rear cover. Refer to Removing the rear cover.
Step 6. Push out the latches on both sides of the memory socket to release the memory module and gently
pull the memory module upward to remove it from its socket.
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ideacentre All-In-One 520 (22 & 24 inch) Computer Hardware Maintenance Manual