3-66 Sun Fire X4100/X4100 M2 and X4200/X4200 M2 Servers Service Manual • August 2009
To replace DIMMs, do the following:
1. Power off the server as described in
Section 3.4 on page 3-4.
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 3.5 on page 3-6 or Section 3.8 on
page 3-10.
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: The DIMM is operating properly.
■ DIMM ejector LED is on (amber): The DIMM is faulty and should be replaced.
Note the following differences between servers regarding the power requirements
for viewing the DIMM fault LEDs:
■ Sun Fire X4100/X4200: The DIMM fault LEDs are lit only if the server is in
standby power mode, with the power cords attached. See “Powering Off the
Server” on page 3-4.
■ Sun Fire X4100 M2/X4200 M2: The DIMM fault LEDs can be lit for up to one
minute without external power. To light the DIMM fault LEDs (from a capacitor
on the motherboard) push the small button on the motherboard labeled “DIMM
SW2.” See
FIGURE 3-52.
■ FIGURE 3-51 shows the numbering and pairing of the Sun Fire X4100/X4200 DIMM
slots.
TABLE 3-3 List of Supported DIMMs
CPU Type DIMM Type Part Numbers
Dual-core AMD Opteron™
processor
2x4GB DIMM (1Gb based) X4227A-Z
2x4GB DIMM (1Gb based) X4233A
2x2GB DIMM (1Gb based)
single-rank
X4226A-C
Quad-core AMD Opteron™
processor
2x1GB DIMM (512Mb based) X4225A-Z
2x2GB DIMM (512Mb based) X4226A-Z
2x2GB DIMM (1Gb based)
single-rank
X4226A-C
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