User’s Manual 3-26
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: repeatedly flashes orange twice, then 
green.
■ If there is an error in only 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).
5. Loosen the one screw securing the memory module cover in place - 
please note that this screw is attached to the cover in order to prevent it 
from being lost.
Use a point size 0 Phillips screwdriver to remove and fasten the screws - 
the use of an incorrect screwdriver can damage the screw heads.
Use a point size 0 Phillips screwdriver.