Replacing The Memory Module - Lenovo ideacentre All-In-One 520 Hardware Maintenance Manual

Step 10. Lift the system fan up to remove it.
Step 11. To install the new system fan:
a. Place the new system fan into position, and then secure it to the chassis with screws.
b. Connect the system fan power cable to the connector on the motherboard.
Step 12. Reattach the motherboard frame, stand holder, 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. Remove the motherboard frame. Refer toRemoving the motherboard frame
Step 7. 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 (27 inch) Computer Hardware Maintenance Manual