IBM THINKCENTRE 8123 - Manual (Page 31)

Important
To avoid damaging the microprocessor contacts, do not tilt the
microprocessor when installing it into the socket.
9. Using the vacuum pen 1 , lower the microprocessor straight down into the
microprocessor socket.
Note: Install the black protective cover that was removed from the new
microprocessor onto the defective microprocessor after the installation is
complete.
10. Pivot the microprocessor retainer 3 to the closed position and pivot the
locking lever 2 to secure the microprocessor 1 . Make sure the locking
lever is engaged with the retainer tab when securing the microprocessor.
Chapter 2. Replacing hardware 23