Replacing The Wi-Fi Card - Lenovo IDEACENTRE 300s series Maintenance Manual

Important: To avoid damaging the microprocessor contacts, keep the microprocessor completely level
while installing it into the socket.
Step 9. Lower the microprocessor straight down into its socket on the motherboard.
Step 10. To secure the microprocessor in the socket, close the microprocessor retainer and lock it into
position with the small handle.
Step 11. Use a thermal grease syringe to place 5 drops of grease on the top of the microprocessor. Each
drop of grease should be 0.03ml (3 tick marks on the grease syringe).
Step 12. Reattach the heat-sink assembly and the computer cover.

Replacing the Wi-Fi card

Note: For this procedure, it helps to lay the computer flat.
To replace the Wi-Fi card:
Step 1. Remove any media (disks, CDs, DVDs, or memory cards) 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 "Left and right view"
and "Rear view" for help with locating the various connectors.
Step 4. Remove the computer cover. Refer to "Removing the computer cover".
Step 5. Remove the graphic card. Refer to "Replacing the graphic card".
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ideacentre 300S Series Hardware Maintenance Manual