Lenovo THINKSERVER 3821 - Manual (Page 237)

Removing a microprocessor retention module
To remove a microprocessor retention module, complete the following steps:
1. Read the safety information that begins on page 5.
2. Turn off the server and all attached devices; then, disconnect all power cords
and external cables.
3. Carefully turn the server on its side so that it is lying flat, with the cover facing
up.
Attention: Do not allow the server to fall over.
4. Unlock and remove the side cover (see “Removing the left-side cover” on page
157).
5. Remove the power supply or power supplies from the power-supply cage (see
“Removing a hot-swap power supply” on page 174).
6. Rotate the power-supply cage to its open position (see “Opening the
power-supply cage” on page 158).
7. Remove the air baffle (see “Removing the air baffle” on page 169).
8. Remove the heat sink and the microprocessor (see “Removing a
microprocessor and heat sink” on page 218).
9. Using a T8 Torx screwdriver, remove the four screws that secure the
microprocessor retention module to the system board; then, lift the
microprocessor retention module from the system board.
10. If you are instructed to return the microprocessor retention module, follow all
packaging instructions, and use any packaging materials for shipping that are
supplied to you.
Chapter 7. Installing optional devices and replacing customer replaceable units 229