Lenovo System x3550 M4 Installation And Service Manual page 313

Step 6. Install the heat sink onto the microprocessor.
Removing the heat-sink retention module
Use this information to remove the heat-sink retention module.
To remove a heat-sink retention module, complete the following steps:
Step 1. Read the safety information that begins on "Safety" on page v and "Installation guidelines"
on page 31.
Step 2. Turn off the server and peripheral devices and disconnect the power cords and all external cables.
Step 3. Remove the cover (see "Removing the cover" on page 189).
Step 4. Remove the air baffle (see "Removing the air baffle" on page 191).
Step 5. Remove the heat sink (see "Removing a microprocessor and heat sink" on page 285).
Attention: When you remove a microprocessor and heat sink, be sure to keep each heat sink with
its microprocessor for reinstallation.
Step 6. Use a screwdriver and remove the four screws that secure the retention module to the system
board; then, lift the retention module from the system board.
Figure 234. Heat-sink retention module removal
If you are instructed to return the heat-sink retention module, follow all the packaging instructions, and use
any packaging materials for shipping that are supplied to you.
Replacing the heat-sink retention module
Use this information to replace the heat-sink retention module.
To install a heat-sink retention module, complete the following steps:
Step 1. Read the safety information that begins on "Safety" on page v and "Installation guidelines"
on page 31.
Step 2. Turn off the server and peripheral devices and disconnect the power cords and all external cables.
Step 3. Remove the cover (see "Removing the cover" on page 189).
Step 4. Remove the air baffle (see "Removing the air baffle" on page 191).
Step 5. Align the retention module with the holes on the system board.
Step 6. Use a screwdriver to reinstall the four screws.
.
Chapter 6 Removing and replacing components
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