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Chapter 3 Maintaining the Sun Fire X4100 Server 3-47
3.4.12 Replacing Memory Modules (DIMMs)
Follow these steps to remove and replace the server’s dual inline memory modules
(DIMMs).
Note – This component is a CRU and can be replaced by anyone.
TABLE 3-12 lists the qualified part numbers for this component. These part numbers
are subject to change over time. For the most up-to-date list of replaceable
components, product updates, and downloads, see the following URL:
http://www.sun.com/servers/entry/x4100/downloads.jsp
1. Power off the server as described in Section 3.2.1, “Powering Off the Server” on
page 3-2.
2. If the server is in a rack, slide it far enough from the rack so that you can remove
the main cover. If you cannot safely view and access the component, remove the
server from the rack.
3. Remove the main cover as described in Section 3.2.2, “Removing the Main Cover”
on page 3-3.
4. Locate the DIMM slot on the motherboard to which you will install or replace a
DIMM.
The DIMM ejector levers contain LEDs that can indicate a faulty DIMM:
■ DIMM ejector LED is off: DIMM is operating properly.
■ DIMM ejector LED is on (amber): DIMM is faulty and should be replaced.
Note – To see the fault LEDs in the ejector levers of the DIMM slots, you must put
the server in standby power mode, with the AC power cords attached. See
Section 3.2.1, “Powering Off the Server” on page 3-2.
The internal system software designation of the DIMM slots is shown in
FIGURE 3-43.
TABLE 3-12 Sun Fire X4100 Supported DIMM Part Numbers
Component Part Number
1 GB (DIMM pair 2 x 512-MB DDR1/400) 540-6454
2 GB (DIMM pair 2 x 1-GB DDR1/400) 540-6453
4 GB (DIMM pair 2 x 2-GB DDR1/400) 540-6497