Lenovo 3000 K100 Hardware Maintenance Manual page 72

Hardware Maintenance Manual

b. Do not drop anything onto the microprocessor socket while it is
exposed. The socket pins must be kept as clean as possible.
13. On the new system board, release the lever securing the
microprocessor retainer and then pivot the retainer until it is fully
open.
Note: There will be a black plastic cover on the microprocessor retainer
to protect the socket on the new system board. Remove the
black plastic cover and place it on the microprocessor socket of
the failing system board.
14. Holding the microprocessor with your fingers, position the
microprocessor so that the notches on the microprocessor are aligned
with the tabs in the microprocessor socket.
Important
To avoid damaging the microprocessor contacts, do not tilt the
microprocessor when installing it into the socket.
15. Lower the microprocessor straight down into the system board socket
of the new system board.