Lenovo System x3300 M4 Installation And Service Manual page 286

Microprocessor
Step 5. Use the thermal-grease syringe to place 9 uniformly spaced dots of 0.02 mL each on the top of
the microprocessor. The outermost dots must be within approximately 5 mm of the edge of the
microprocessor; this is to ensure uniform distribution of the grease.
Note: If the grease is properly applied, approximately half of the grease will remain in the syringe.
Step 6. Install the heat sink onto the microprocessor as described in "Installing a microprocessor and
heat sink" on page 71.
Removing the microprocessor 2 expansion board
Use this information to remove the microprocessor 2 expansion board.
To remove 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. Note where the cables are connected to the microprocessor 2 expansion board; then, disconnect them.
Attention: Disengage all latches, release tabs or locks on cable connectors when you disconnect all
cables from the system board (see "Internal Cable Routing and Connectors" on page 166 for more
information). Failing to release them before removing the cables will damage the cable sockets on the
microprocessor 2 expansion board. The cable sockets on the microprocessor 2 expansion board are
fragile. Any damage to the cable sockets may require replacing the microprocessor 2 expansion board.
8. Remove any of the following components that are installed on the microprocessor 2 expansion board
and put them in a safe, static-protective place:
a. Adapters (see "Removing an adapter" on page 211)
b. DIMMs (see "Removing a memory module" on page 253)
c. Microprocessors and heat sinks (see "Removing a microprocessor and heat sink" on page 266)
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System x3300 M4 Installation and Service Guide
0.02 mL of thermal
grease