Chapter 4 Maintaining the Sun Fire X2250 Server 4-3
2. Remove the server cover.
See Section 4.3, “Powering Off the Server and Removing the Cover” on page 4-3
for the appropriate procedure for removingthe cover from the server.

4.2.3 Postinstallation Instructions

Perform the following steps after installing a server component.
1. Ensure that all of the components are installed as described in the component
replacement instructions.
See Section 4.5, “Component Replacement Procedures” on page 4-6.
2. Reinstall any PCI-Express (PCIe) cards or peripherals that you had previously
removed.
See Section 4.5, “Component Replacement Procedures” on page 4-6.
3. Reinstall the system’s cover.
See Section 4.3, “Powering Off the Server and Removing the Cover” on page 4-3.
4. Connect all external cables to the system.
5. Power on the system.
See Section 1.4, “Powering On and Powering Offthe Server” on page 1-7.
Caution – If the cover has been removed or hard drive bays do not have adrive or
filler panel installed, do not operate the server for more than ten minutes. Improper
cooling airflow might damage the system’s components.
4.3 Powering Off the Server and Removingthe Cover
For your safety,perform this procedure when you are powering off the system and
removing the cover for a maintenance procedure in this chapter.
1. If the operating system (OS) is running, perform a shutdown of the OS, and
then press and release the platform Power button on the front panel.
2. Turn off all peripheral devices connected to the system.
3. Disconnect the AC power on the back panel of the server (see FIGURE 1-2).