Dell Dimension 4200 Manual page 19

c. Lift the heat sink away from the microprocessor.
8. Remove the microprocessor package from the socket.
NOTICE: Be careful not to bend any of the pins when you remove the microprocessor package from the ZIF socket. Bending the package pins can
permanently damage the microprocessor.
The ZIF socket has a lever-type handle that secures and releases the microprocessor package from the ZIF socket.
a. Pull the socket release lever straight up until the microprocessor package releases.
b. Remove the microprocessor package from the socket.
Leave the release lever extended so that the socket is ready for the new microprocessor package.
NOTICE: If you are replacing the microprocessor, do not reuse the old heat sink. Doing so can cause the microprocessor to overheat because of an
inadequate amount of thermal compound between the heat sink assembly and the microprocessor package.
NOTICE: You must position the microprocessor package correctly in the ZIF socket to avoid permanent damage to the microprocessor and the computer
when you turn on the system.
9. Install the microprocessor package in the ZIF socket:
a. If the release lever on the ZIF socket is not all the way out, move it to that position now.
b. Align pin 1 (the beveled corner) of the microprocessor package and pin 1 of the ZIF socket.