Lenovo B40–30 Hardware Maintenance Manual page 42

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 stand base. Refer to "Removing the stand base".
Step 5. Remove the foot cover. Refer to "Removing the foot cover".
Step 6. Remove the stand holder. Refer to "Removing the stand holder".
Step 7. Remove the middle cover. Refer to "Removing the middle cover".
Step 8. Remove the EMI cover. Refer to "Removing the EMI cover".
Step 9. Remove the heat-sink. Refer to "Replacing the heat sink".
Step 10. Lift the small handle and open the retainer.
Step 11. Lift the microprocessor straight up and out of the socket.
Attention: Do not touch the gold contacts on the bottom of the microprocessor. When handling the
microprocessor, touch only the sides.
Note: Do not drop anything onto the microprocessor socket while it is exposed. The socket pins must
be kept as clean as possible.
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Lenovo B40–30 All-In-One Computer Hardware Maintenance Manual
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