Lenovo A730 All-in-One IdeaCentre - Manual (Page 44)

Step 11. Lower the microprocessor straight down into its socket on the motherboard.
Step 12. To secure the microprocessor in the socket, close the microprocessor retainer and lock it into
position with the small handle.
Step 13. 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 14. Reattach the system fan, heat-sink, and base cover, then secure them with the screws.
Replacing the optical drive
Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
To replace the optical drive
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 base cover. Refer to “Removing the base cover”.
Step 5. Disconnect the optical drive data cable from the motherboard.
38 IdeaCentre A730Hardware Maintenance Manual