User’s Manual 3-23
Hardware, Utilities and Options
Point to note about memory module error
If you install a memory module that is not compatible with the computer, the
Power indicator will flashes (on for 0.5 seconds, off for 0.5 seconds) in the
following ways;
■If there is an error in only Slot A or no memory module is inserted in Slot
A: repeatedly flashes orange twice, then green.
■If there is an error in Slot B: repeatedly flashes orange, then green
twice.
■If there are errors in both Slot A and Slot B: repeatedly flashes orange
twice, then green twice.
In all instances you should shut down the computer and remove the
incompatible module(s).
Installing a memory module
To install a memory module, follow the steps as detailed below:
1. Shut down the computer - make sure the Power indicator is off (refer to
the Turning off the power section in Chapter 1, Getting Started if
required).
2. Remove the AC adaptor and all cables and peripherals connected to
the computer.
3. Close the display panel.
4. Turn the computer upside down and remove the battery pack (refer to
Replacing the battery pack section in Chapter 6, Power and Power-Up
Modes, if required).
■Use only memory modules approved by TOSHIBA.
■Do not try to install or remove a memory module under the following
conditions.
a. The computer is turned on.
b. The computer was shut down in either Sleep or Hibernation Mode.
c. Wake-up on LAN is enabled.
d. Wake-up on Wireless LAN is enabled.
e. The wireless communication switch is turned on.
■Be careful not to let screws or other foreign matter fall into the
computer. It could cause malfunction or electric shock.
■Additional memory module 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 additional memory modules. To discharge
your body’s static electricity, simply touch any metal close to you with
bare hands.
Use a point size 0 Phillips screwdriver to remove and fasten the screws -
the use of an incorrect screwdriver can damage the screw heads.