Sun Oracle Fire X4440, Service Manual

Page: 85 / 222

Chapter 4 Servicing Motherboard Components 4-21
4.4 Servicing PCIe Risers
The following topics are covered:
■
Section 4.4.1, “Removing a PCIe Riser” on page 4-21
■
Section 4.4.2, “Installing a PCIe Riser” on page 4-23
PCIe cards are installed on vertical riser assemblies. You must remove the relevant
riser assembly to access a PCIe card. You must remove all three PCIe riser assemblies
when replacing the motherboard.
Note – CRU : This customer-replaceable unit can be replaced by anyone.
Caution – This procedure requires that you handle components that are sensitive to
static discharge. This sensitivity can cause the component to fail. To avoid damage,
ensure that you follow antistatic practices as described in
Section 2.8.1, “Electrostatic
Discharge Safety Measures” on page 2-10 .
4.4.1 Removing a PCIe Riser
Caution – Ensure that all power is removed from the server before removing or
installing risers. You must disconnect the power cables before performing this
procedure.
1. Prepare the server for service.
a. Power off the server.
See Section 2.5, “Powering Off the Server” on page 2-4 .
b. Disconnect the power cord (or cords) from the power supply (or supplies).
See Section 2.5, “Powering Off the Server” on page 2-4 .
c. Attach an antistatic wrist strap.
See Section 2.8, “Performing Electrostatic Discharge and Antistatic Prevention
Measures” on page 2-10 .