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LifeBook N6400 Series User’s Guide
Memory Upgrade Module
Your notebook has two memory slots, and the system
comes with 1 GB, 2 GB, or 4 GB of factory-installed
memory. If you have a module installed in only one slot,
you can increase your memory capacity by installing
another memory module in the empty slot or by
increasing the size of the single installed module. The
minimum amount of memory in your system is 1 GB.
Your notebook supports dual-channel memory, which
can have a significant effect upon your system’s perfor-
mance. In order to support dual-channel memory, two
DIMM modules must be installed in your computer.
INSTALLING A MEMORY MODULE
1. Turn off power to your LifeBook notebook using the
power/suspend/resume button, and remove any
power adapter.
2. Make sure that all the connector covers are closed.
3. Turn the LifeBook notebook bottom side up, with
the front panel toward you.
4. Remove the screws at the front of the memory
upgrade module compartment. (Figure 4-11)
5. Remove the cover by tilting the front edge up, then
pulling forward until the tabs on the cover are free.
Figure 4-11. Opening the Memory Upgrade Compartment
6. Remove the memory upgrade module from the
static guarded sleeve.
7. Align the memory upgrade module with the part
side up. Align the connector edge of the memory
upgrade module with the connector slot in the
compartment. The connector will be pointing
toward the rear of the LifeBook notebook.
8. Insert the memory upgrade module at a 45° angle.
Press the connector edge of the module firmly down
and into the connector until it lodges under the
retaining clip. You will hear a click when it is prop-
erly in place. (Figure 4-12)
Figure 4-12. Installing a Memory Upgrade Module
9. Replace the cover by hooking the tabs under the rear
edge of the compartment opening and tilting down
until flush with the bottom of your notebook.
10. Replace the screws.
■
Systems with Microsoft Windows Vista
installed require a minimum of 512 MB
of memory, but 1 GB or more is recom-
mended.
■
If 4 GB of memory is installed in your
system, only 3.25 GB are usable, due to
operating system constraints.
■
Do not remove any screws from the
memory upgrade module compartment
except the ones specifically shown in the
directions for installing and removing the
memory upgrade module.
■
The memory upgrade module can be
severely damaged by electrostatic dis-
charge (ESD). To minimize risk to the
module, observe the following:
■
Before handling a memory module,
touch a grounded metal object to
discharge static electricity built up in
your body.
■
When installing or removing a
memory module, hold it by the edge
so as not to touch any contacts or
chips. Do not to touch any internal
computer terminals or components;
the oil from your fingers could cause a
short to the components.
■
Power down your system before you
add or remove memory modules.
Even if the system is in hibernate or
standby states, data could be lost or
the memory could be damaged if
power is still available to the system.
The installation of incompatible memory
modules can cause numerous problems
which could result in loss of data. Memory
upgrades must be PC2-5300 DDR2-667
SO-DIMM modules. Fujitsu highly recom-
mends that you only purchase additional
memory from the Fujitsu on-line accessory
store at: us.fujitsu.com/computers.
N6420-Vista.book Page 48 Friday, February 16, 2007 4:48 PM