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35
Opening your system
Caution! Before you proceed, make sure that you have turned
off your system and all peripherals connected to it. Read the
“Preinstallation instructions” on page 33.
Warning! DO NOT attempt the procedures in the following
sections unless you are confident of your capability to
perform them. Otherwise, ask a service technician for
assistance.
Removing the system cover
You need to open your system before you can install additional
components.
1 Turn off the power to the system unit and unplug all cables.
2 Place your system unit on a flat, steady surface.
3 Turn the thumbscrews counterclockwise to release the cover (1).
Hold the cover with both hands and gently pull back the cover to
detach it from the housing (2).
aa r300.book Page 35 Tuesday, March 4, 2003 9:39 AM