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User’s Manual 9-13
Optional Devices
Memory expansion
You can install additional memory into the computer in order to increase the
amount of system memory that is available. This section describes how to
install and remove optional memory modules.
Point to note about memory module error
If you install a memory module that is not compatible with the computer, a
“beep signal” will sound when you turn on the power. If the incompatible
module is installed in Slot A, there will be a long beep of one second,
followed by one short beep of half a second, while if the incompatible
module is in Slot B, there will be a long beep followed by two short beeps.
In the event that both modules are incompatible, there will be a long beep
followed by one short beep, a pause, and then a long beep followed by two
short beeps - in all instances you should shut down the computer and
remove the incompatible module(s).
■ You should place a mat beneath the computer in order to prevent the
computer’s lid from becoming scratched or damaged when you are
installing/replacing the memory module. In this instance you should
avoid mats that are made of materials that hold or generate static
electricity.
■ When installing or removing a memory module, you must ensure that
you do not touch any other internal areas of the computer.
■ The Front-side System Bus Speed (FSB) for this computer is 533MHz.
While 667MHz memory modules can be installed, the FSB will depend
on the computer.
■ Use only memory modules approved by TOSHIBA.
■ Do not try to install or remove a memory module under the following
conditions as you can damage the computer and/or the module, and
you risk losing data:
a. The computer is turned on.
b. The computer was shut down using either Standby Mode or
Hibernation Mode.
c. Wake-up on LAN is enabled.
d. Wake-up on Wireless LAN is enabled.
■ Be careful not to let screws or other foreign matter fall into the
computer. It could cause malfunction or electric shock.
■ Expansion memory is a precision electronic component that may be
fatally damaged by static electricity. Since the human body can carry
static electricity, it is important that you discharge yourself before
touching or installing any expansion memory modules. To discharge
your body’s static electricity, simply touch any metal close to you with
bare hands.
■ In order to ensure that the computer power is not turned on while
working, set the Wireless communication switch to OFF.