3.Replace the top cover. See “Replacing the Top Cover” (page 182).

4.If rack installed, slide the server completely into the rack. See “Inserting the Server into the Rack” (page 180).

5.Reconnect all external cables to the card.

6.Reconnect the power cables and power on the server. See “Powering On the Server” (page 94).

Removing and Replacing the Display Board

The display board is a combination board that supports the following server components:

•Power switch and status LEDs

•DVD drive

•Front panel USB port

•Diagnostic panel

The display board attaches to an interconnect board that functions as a link between the midplane board and the display board.

The display board contains the power switch and the following status LEDs:

•Power LED

•System health LED

•Internal health LED

•External health LED

•Locator LED

For more detailed information about front panel LED behavior, see “Controls, Ports, and LEDs” (page 36).

The display board includes a USB connector that supports USB 2.0 (480 Mbps).

The diagnostic panel provides failure identification for each component that has a detectable error associated with it. For more information on the diagnostic panel LEDs, see “Controls, Ports, and LEDs” (page 36).

WARNING! Ensure that the system is powered off and all power sources have been disconnected from the server prior to performing this procedure.

Voltages are present at various locations within the server whenever an ac power source is connected. This voltage is present even when the main power switch is in the off position.

Failure to observe this warning can result in personal injury or damage to equipment.

CAUTION: Observe all ESD safety precautions before attempting this procedure. Failure to follow ESD safety precautions can result in damage to the server.

IMPORTANT: System information is stored on the display board assembly. You must write the serial number and model string information to the new display board after installation.

Removing the Display Board

To remove the display board, follow these steps:

1.Power off the server and disconnect the power cables. See “Powering Off the Server” (page 95).

2.If rack installed, slide the server completely out from the rack. See “Extending the Server from the Rack” (page 180).

3.Remove the top cover. See “Removing the Top Cover” (page 181) .

242 Removing and Replacing Server Components