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4. If there already is a SIM card in the tray, remove the SIM card.
5. Carefully install a new SIM card into the tray.
6. Insert the SIM card tray back into the computer.
7. Connect the ac power adapter and all cables.
Replacing the base cover assembly
Before you start, print these instructions.
To replace the base cover assembly, do the following:
1. Disable the built-in battery. See “Disabling the built-in battery” on page 59.
2. Close the computer display, and turn the computer over.
3. Loosen the 8 screws 1 that secure the base cover assembly. Then remove the base cover assembly 2 .
Chapter 6. Replacing devices 61