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Removing and insta lling components
during servicing
Removing and installing memory
modules
MainmemoryMemoryexpansionMemoryupgradeS ystemexpansion
The no tebook will not start without memory modules, as no fixed RAM is installed.
Your notebook supports dual-channel DDR2 technology.
The dual-channel DDR2 technology can only be used with two identical memo ry
modules. When two different memory modules are installed, only "single-channel"
mode is suppo rted. This reduces the performance of your notebook.
With a mem ory configuration of 4 Gbytes, the visible and usable main memory may
be reduced to 3 Gbytes (depending on notebook configuration).
If you are asked by the Hotline/Help Desk to remove and install the memory
modules yourself, proceed as follows:
Pay attention to the relevant safety not es 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 28).
Never use f orce when installing or removing memory modules.
Make sure that foreign objects do not fall into the memory expansion c ompart m ent.
Individual components (e.g. th
e processor heat sink) can become very hot
during operation. Therefore,
we recommend that you wait one hour after
switching off the notebook bef
ore removing or installing the memory modules.
Otherwise, there is a risk of su
ffering burns!
As some non-ESD safe component
s are e xposed, please observe the section "
Notes
on installing and removing boa
rds and component s", Page 24.
► Switch your notebook off and unplug the mains adapter from the mains outlet.
► Close the LCD screen so that it locks into place.
► Disconnect all cables connected to the notebook.
► Turn your notebook over and place it on a stable, flat and clean surface. If ne cessary, lay
an anti-slip cloth on this surface to prevent the notebo ok from being scratched.
► Remo v e the battery (see "
Removing the battery", Page 16).
A26391-K233-Z120-1-7619 , edition 1 25