Attention: Make sure that the release lever on the microprocessorsocket is in the fully open position before you insert the microprocessor inthe socket. Failure to do so might result in permanent damage to themicroprocessor, microprocessor socket, and system board.c. Rotate the release lever on the microprocessor socket from its closed andlocked position to its fully open position.Microprocessorrelease lever(fully open)Microprocessorbracket frameAttention:v Do not use excessive force when pressing the microprocessor into thesocket.v Make sure that the microprocessor is oriented and aligned with landnumber 1 in the socket before you try to close the lever.d. Align the microprocessor with the socket (note the alignment mark and theposition of the notches); then, carefully place the microprocessor on thesocket and close the microprocessor bracket frame.MicroprocessorMicroprocessor socketMicroprocessorrelease leverAlignment markse. Carefully close the release lever to secure the microprocessor in thesocket.9. Install the heat sink.Attention: Do not touch the thermal grease on the bottom of the heat sink orset down the heat sink after you remove the plastic cover. Touching thethermal grease will contaminate it.a. Make sure that the heat-sink lever is in the open position.b. Remove the plastic protective cover from the bottom of the heat sink.c. Align the heat sink above the microprocessor with the thermal-grease sidedown. Press firmly on the heat sink.50 System x3400 Types 7973, 7974, 7975, and 7976: User’s Guide
