Removing The System Board - Lenovo System x3550 M4 Installation And Service Manual

Figure 235. Heat-sink retention module installation
Step 7. Reinstall the heat sink (see "Replacing a microprocessor and heat sink" on page 290).
Attention: Make sure that you install each heat sink with its paired microprocessor.
Step 8. Reinstall the air baffle (see "Replacing the air baffle" on page 192).
Step 9. Install the cover (see "Replacing the cover" on page 190).
Step 10. Slide the server into the rack.
Step 11. Reconnect the power cords and any cables that you removed.
Step 12. Turn on the peripheral devices and the server.

Removing the system board

Use this information to remove the system board.
Notes:
1. When you replace the system board, you must either update the server with the latest firmware or
restore the pre-existing firmware that the customer provides on a diskette or CD image. Make sure that
you have the latest firmware or a copy of the pre-existing firmware before you proceed.
2. Before you replace the system board, make sure that you back up any features on demand (FoD) keys
that were enabled. Reactivate any Features on Demand features. Instructions for automating the
activation of features and installing activation keys is in the Features on Demand User's Guide. To
download the document, go to http://www.ibm.com/systems/x/fod/, log in, and click Help.
To remove the system board, complete the following steps:
Step 1. Read the safety information that begins on "Safety" on page v, "Handling static-sensitive devices"
on page 33, and "Installation guidelines" on page 31.
Step 2. Turn off the server and any attached devices.
Step 3. Turn off the peripheral devices and disconnect all power cords.
Note: When you replace the system board, you must either update the server with the latest
firmware or restore the pre-existing firmware that the customer provides on a diskette or CD
image. Make sure that you have the latest firmware or a copy of the pre-existing firmware before
you proceed.
Step 4. Pull the power supplies out of the rear of the server, just enough to disengage them from the server.
Step 5. Remove the cover (see "Removing the cover" on page 189).
Step 6. Remove the air baffle (see "Removing the air baffle" on page 191).
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System x3550 M4 Installation and Service Guide