Replacing The Speaker System - Lenovo ideacentre All-In-One 520 Hardware Maintenance Manual

c. Connect all the cables to the new motherboard.
Step 15. Install the following parts to the new motherboard:
• Wi-Fi card
• Heat-sink
• Solid state drive
• Memory module
Step 16. Reattach the motherboard frame, rear cover and stand base.

Replacing the speaker system

Note: 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 computer screen from scratches
or other damage.
To replace the speaker system:
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. Disconnect the speaker system cable from the connector on the motherboard, and then slide the
rubber screws of the speaker system out of the screw slots.
Step 8. Lift up the speaker system to remove it.
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ideacentre All-In-One 520 (27 inch) Computer Hardware Maintenance Manual