Laptop User Manual
Removing and installing components
during servicing
Removing and installing memory
modules
MainmemoryMemoryexpansionMemoryupgradeSystemexpansion
The notebook 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 memory
modules. When two different memory modules are installed, only "single-channel"
mode is supported. This reduces the performance of y our notebook.
With a memory configuration of 4 G bytes, the visible and usable main memory may
be reduced to 3 Gbytes (depending on notebo ok confi guration).
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 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 Sec tion "
Technical data", Page 2 8).
Never use f orce when installing or remo ving memory modules.
Make sure that foreign objects do not fall into the memory expansion compartment.
Individual components (e.g. th
e processor heat s ink) can become very hot
during operation. Therefore,
we recommend that you wait one hour after
switching off the notebook bef
ore removing or inst alling 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 "
Notes
on installing and removing boa
rds and components", Page 24.
► Switch your notebook off and unplug the mains adap ter from the mains outlet.
► Close th e LCD screen so that it locks into place.
► Disconnect all cables conn ected to the notebook.
► Turn your notebook over and place it on a stable, flat and clean surf ace. If necessary, lay
an anti-slip cloth on t his surface to prevent the notebook from being scratched.
► Remov e the battery (see "
Removing the bat tery", Page 16).
A26391-K233-Z120-1-7619 , edition 1 25