Removing and in stalling components
during servicing
Removing and installing memory
modules
MainmemoryMemoryexpansionMemoryupgradeSysteme xpansion
Your notebo ok supports dual-channel DDR2 technology.
The dual-channel DDR2 technology can only be used with two identical memory
modules. When two different memory modules are installed, only "single-channel"
mode is supported. Th is reduces the performance of your notebook.
With a m emory configuration of 4 GBytes, the visible and usable main memory
may be reduced to 3 G Byte s (depending on the operating s ystem).
If you are asked by the Hotline/Help Desk to remove and install the memory
modules yourself, proceed a s follows:
Pay attention to the relevant safety notes provided in the "Important notes" chapter.
The notebook must be switched off when installing/removing the memory
modules, it must not be in Suspend mode.
Only use approved memory expansion modules in your notebook
(see Section "
Technical data", Page 30).
Never use force when installing o r removing memory modules.
Make sure that foreign objects do not fall into the memory expansion compartment.
Individual components (e.g. the
processor heat sink) can become very hot
during operation. Therefore,
we recommen d that you wait one hour after
switching off the notebook bef
ore rem oving or installing the memory modules.
Otherwise, there is a risk of su
ffering burns!
As some non-ESD safe component
s are exposed, please observe the section "
Note s
on insta lling and removing boa
rds and components", Page 23.
► Switch your note book off and unplug the mains adapter from the mains outlet.
► Close the LCD screen.
► Disconnect all cables connected to the notebook.
► Turn you r notebook over a nd place it on a stable, flat and clean surface. If necessa ry, lay
an anti-slip cloth on this surface to prevent the notebook from being scratched.
► Rem o v e the battery (see "
Removing the battery", Pa ge 15).
26 A26391-K230-Z120-1-7619, edition 2
