IBM System x3400 Type 7975 Installation Manual page 33

v When you restart the server after adding or removing a DIMM, the server
displays a message that the memory configuration has changed.
Attention: Static electricity that is released to internal server components when
the server is powered-on might cause the server to stop, which could result in the
loss of data. To avoid this potential problem, always use an electrostatic-discharge
wrist strap or other grounding system when working inside the server with the
power on.
To install a DIMM, complete the following steps:
1. Read the safety information that begins on page v and "Installation guidelines"
on page 9.
2. Turn off the server and peripheral devices, and disconnect the power cords
and all external cables.
3. Remove the side cover (see "Removing the side cover" on page 12).
4. Rotate the power-supply cage assembly out of the chassis:
v Hot-swap models:
a. Remove the hot-swap power-supply. Press down on the orange release
lever and pull the power supply out of the bay, using the handle.
b. Lift up the power-supply cage handle and pull the power-supply cage
assembly all the way up until the retainer latch locks the cage in place
on the chassis.
v Non-hot-swap models, lift up the power-supply cage handle and pull the
power-supply cage assembly all the way up until the retainer latch locks the
cage in place on the chassis.
5. Locate the DIMM connectors on the system board. Determine the connector in
which you will install the DIMMs. Install the DIMMs in the sequence indicated
in Table 3 on page 17 and Table 4 on page 18
Note: DIMM connectors 3, 6, 9, and 12 are not functional in this server. Do
not install DIMMs in these connectors.
Attention: To avoid breaking the retaining clips or damaging the DIMM
connectors, open and close the clips gently.
6. Open the retaining clips and, if necessary, remove any existing DIMM.
Chapter 2. Installing options
19