IBM 7378, Problem Determination And Service Manual

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5. Insert the DIMM into the connector by aligning the edges of the DIMM with the
slots at the ends of the DIMM connector.
6. Firmly press the DIMM straight down into the connector by applying pressure
on both ends of the DIMM simultaneously. The retaining clips snap into the
locked position when the DIMM is firmly seated in the connector.
Note: If there is a gap between the DIMM and the retaining clips, the DIMM
has not been correctly inserted; open the retaining clips, remove the DIMM,
and then reinsert it.
7. Install the air baffle (see “Installing the air baffle” on page 213).
8. Return the power-supply cage to its closed position (see “Closing the
power-supply cage” on page 156).
9. Install the hot-swap power supply or power supplies (see “Installing a hot-swap
power supply” on page 274).
10. Install and lock the left-side cover (see “Installing the left-side cover” on page
181).
11. Reconnect the external cables and power cords; then, turn on the attached
devices and turn on the server.
In two-DIMM-per-channel configuration, a server with an Intel Xeon X5600 series
microprocessor automatically operates with a maximum memory speed of up to
1333 MHz when one of the following conditions is met:
v
Two 1.5 V single-rank or dual-rank RDIMMs are installed in the same channel. In
the Setup utility,
Memory speed is set to Max performance mode
v Two 1.35 V single-rank or dual-ranl RDIMMs are installed in the same channel.
In the Setup utility,
Memory speed is set to Max performance and LV-DIMM
power is set to Enhance performance mode. The 1.35 V RDIMMs will function
at 1.5 V
The following notes describe the types of DIMMs that the server supports and other
information that you must consider when you install DIMMs.
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IBM System x3400 M3 Types 7378 and 7379: Problem Determination and Service Guide