Cisco Systems UCS C420 manual Replacing a PCIe Riser Assembly

Chapter 3 Maintaining the Server

Installing or Replacing Server Components

Replacing a PCIe Riser Assembly

The server contains two PCIe risers for horizontal installation of PCIe cards. These risers wrap around the power supply bays and connect to dedicated PCIe slots 1 and 7 on the motherboard. These risers each provide one standard-profile, half-length, x16 horizontal slot.

To install or replace a PCIe riser assembly, follow these steps:

Step 1 Remove the PCIe riser assembly that you are replacing (see Figure 3-20):

a.Power off the server as described in Shutting Down and Powering Off the Server, page 3-8.

b.Slide the server out the front of the rack far enough so that you can remove the top cover. You might have to detach cables from the rear panel to provide clearance.

Caution If you cannot safely view and access the component, remove the server from the rack.

c.Remove the top cover as described in Removing and Replacing the Server Top Cover, page 3-9.

d.Use a Number 2 Phillips-head screwdriver to loosen the two captive thumbscrews that secure the PCIe riser assembly.

e.Lift straight up on both ends of the PCIe riser assembly to disengage its circuit board from the socket on the motherboard.

Step 2 Install a new PCIe riser assembly:

a.Set the PCIe riser assembly back in place over the power supply bay.

b.Align the circuit board edge with the socket on the motherboard and then push straight down on both ends of the assembly to fully engage the board with the socket.

c.Tighten the two captive thumbscrews that secure the riser assembly in place.

d.Replace the top cover.

e.Replace the server in the rack, replace cables, and then power on the server by pressing the Power button.

	Cisco UCS C420 Server Installation and Service Guide
OL-27640-01		3-35