Acer Veriton 3900, Руководство пользователя

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Opening your computer 3900Pro
Caution: Before you proceed, make sure that you have turned off
your computer and all peripherals connected to it. Read the
"Preinstallation instructions" on page 53.
You need to open your computer before you can install additional
components. See the following section for instructions.
To remove the computer cover
1 Turn off your computer and unplug all cables.
2 Place your computer on a flat, steady surface. If your computer is in the
vertical position, remove the foot stands and place your computer in the
regular desktop position.
3 Turn the thumbscrews counterclockwise with your fingers to release the
cover.
Hold the sides of the cover with both hands.
Slide it back about an inch and then gently lift it upward to detach it.