Servicing Fb-Dimms; Identifying Faulty Fb-Dimms - Sun Microsystems Sun Fire X4450 Service Manual

4.1

Servicing FB-DIMMs

This section describes how to diagnose and replace faulty FB-DIMMs (fully buffered
DIMMs). The following topics are covered:
Section 4.1.1, "Identifying Faulty FB-DIMMs" on page 4-2
■
Section 4.1.2, "FB-DIMM Guidelines" on page 4-4
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(Includes additional FB-DIMM information.)
Section 4.1.3, "Removing FB-DIMMs" on page 4-7
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Section 4.1.4, "Installing FB-DIMMs" on page 4-8
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Section 4.1.5, "Installing Additional FB-DIMMs" on page 4-10
■
(How to upgrade the server with additional FB-DIMMs.)
Note – This is a customer-replaceable unit.
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
Discharge Safety Measures" on page
4.1.1

Identifying Faulty FB-DIMMs

The system fault LED lights if the system detects an FB-DIMM fault.
To identify faulty FB-DIMMs:
1. Power down the server.
2. Unplug all power cords from the rear panel.
3. Remove the top cover.
4. Press and hold the Remind button on the memory tray to identify which
FB-DIMM is faulty. (
4-2 Sun Fire X4450 Server Service Manual • November 2009
2-9.
)
FIGURE 4-1
Section 2.7.1, "Electrostatic