Lenovo System x3300 M4 Installation And Service Manual page 288

12. If you are instructed to return the microprocessor 2 expansion board, follow all packaging instructions,
and use any packaging materials for shipping that are supplied to you.
Attention: Make sure to place the socket cover for the microprocessor socket on the microprocessor 2
expansion board before returning the microprocessor 2 expansion board.
If you have other devices to install or remove, do so now. Otherwise, go to "Completing the installation"
on page 83.
Replacing the microprocessor 2 expansion board
Use this information to replace the microprocessor 2 expansion board.
To replace the microprocessor 2 expansion board, complete the following steps:
1. Read the safety information that begins in "Safety" on page v and "Installation guidelines" on page 163.
2. Turn off the server (see "Turning off the server" on page 24) and all attached peripheral devices.
Disconnect all power cords; then, disconnect all external cables from the server.
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 left-side cover (see "Removing the left-side cover" on page 187).
5. Remove the air baffle (see "Removing the air baffle" on page 189).
6. Remove the fan assembly (see "Removing the fan assembly" on page 261).
7. Remove the existing additional microprocessor (see "Removing the microprocessor 2 expansion
board" on page 272).
8. Touch the static-protective package that contains the microprocessor 2 expansion board to any
unpainted metal surface on the server; then, remove the microprocessor 2 expansion board from
the package.
9. Install the microprocessor 2 expansion board side bracket.
a. Align the side bracket with the holes on the chassis and install the side bracket on the system board.
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System x3300 M4 Installation and Service Guide