1.Position the cover onto the opening above the memory carrier assembly.

2.Slide the cover toward the right side of the server until it is flush with the center chassis wall.

3.Slide the top cover forward until it is flush with the front of the chassis; push firmly.

4.Push the cover release lever down into the latched position (Figure 6-3).

5.Lock the cover release lever by turning the cam approximately 90 degrees clockwise.

Removing and Replacing a Hot-Swappable Chassis Fan Unit

There are three interchangeable, hot-swappable chassis fan units in the server. Fan unit one is located behind the memory carrier assembly. Fan units two and three are located in the center of the chassis between the disk drives and the I/O board assembly. You can replace the hot-swappable fans using the procedures in this section when system power is on or off.

CAUTION: Observe all ESD safety precautions before removing or replacing a fan unit. Failure to follow ESD safety precautions can result in damage to the server.

NOTE: A hot-swappable device does not require interaction with the operating system before the device is removed from or installed into the server.

The dc power to the server does not have to be off to remove or replace a hot-swappable chassis fan unit.

Removing a Hot-Swappable Chassis Fan Unit

To remove a hot-swappable chassis fan unit, follow these steps:

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

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

3.Insert thumb and forefinger into the openings on the top of the fan and squeeze until the fan releases from the socket.

184 Removing and Replacing Server Components