Removing A Microprocessor And Heat Sink - Lenovo System x3300 M4 Installation And Service Manual

Step 13. Reconnect the power cable from the RAID battery to the ServeRAID adapter, if you have removed it.
Step 14. Reinstall the fan assembly (see "Installing the fan assembly" on page 83).
Step 15. Reinstall the air baffle (see "Replacing the air baffle" on page 190).
If you have other devices to install or remove, do so now. Otherwise, go to "Completing the installation"
on page 83.

Removing a microprocessor and heat sink

Use this information to remove a microprocessor and heat sink.
Attention:
• Be extremely careful, the pins on the socket are fragile. Any damage to the pins may require replacing
the system board.
• Do not allow the thermal grease on the microprocessor and heat sink to come in contact with anything.
• Removing the heat sink from the microprocessor destroys the even distribution of the thermal grease and
requires replacing the thermal grease.
• Do not touch the microprocessor contacts; handle the microprocessor by the edges only. Contaminants
on the microprocessor contacts, such as oil from your skin, can cause connection failures between
the contacts and the socket.
• Use the microprocessor installation tool that came with the new microprocessor to remove and install the
microprocessor. Failure to use the microprocessor tool may cause damage to the pins on the socket.
Any damage to the pins may require replacing the system board.
To remove a microprocessor and heat sink, complete the following steps:
Step 1. Read the safety information that begins on page "Safety" on page v and "Installation guidelines" on
page 163.
Step 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 as necessary to replace the device.
Step 3. Remove the left side cover (see "Removing the left-side cover" on page 187).
Step 4. Disconnect any cables that impede access to the heat sink and microprocessor.
Step 5. Remove the air baffle (see "Removing the air baffle" on page 189).
Step 6. Loosen the screws on the heat sink with a screwdriver by the order as the label showed. If
possible, each screw should be rotated two full rotations at a time.
Step 7. Gently pull the heat sink off the microprocessor. Lift the heat sink out of the server. If the heat sink
sticks to the microprocessor, slightly twist the heat sink back and forth to break the seal. After
removal, place the heat sink on its side on a clean, flat surface.
Note: Removing the heat sink from the microprocessor destroys the even distribution of the
thermal grease and requires replacing the thermal grease.
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System x3300 M4 Installation and Service Guide