IBM System x3250 M4, Installation & User Manual

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Attention: Static electricity that is released to internal server components when
the server is powered on might cause the server to halt, which might result in the
loss of data. To avoid this potential problem, always use an electrostatic-discharge
wrist strap or other grounding system when you work inside the server with the
power on.
To install a DIMM, complete the following steps:
1. Read the safety information that begins on page “Safety” on page vii and
“Installation guidelines” on page 25.
2. Turn off the server and peripheral devices and disconnect the power cords and
all external cables, if necessary.
3. Remove the server top cover (see “Removing the server top cover” on page
27).
4. Remove the air baffle (see “Removing the air baffle” on page 28).
5. Locate the DIMM connectors on the system board. Determine the connectors
into which you will install the DIMMs. Install the DIMMs in the sequence shown
in the following table.
Table 7. DIMM installation sequence
Number of DIMMs Installation sequence (connectors)
First pair of DIMMs 1, 3
Second pair of DIMMs 2, 4
6. Open the retaining clip on each end of the DIMM connector.
Attention: To avoid breaking the retaining clips or damaging the DIMM
connectors, open and close the clips gently.
7. Touch the static-protective package that contains the DIMM to any unpainted
metal surface on the outside of the server. Then, remove the DIMM from the
package.
8. Turn the DIMM so that the DIMM keys align correctly with the connector.
9. Insert the DIMM into the connector by aligning the edges of the DIMM with the
slots at the ends of the DIMM connector (see “System-board internal
connectors” on page 20 for the locations of the DIMM connectors).
Chapter 2. Installing optional devices
33