Replacing The Base Cover Assembly - Lenovo ThinkPad X280 User Manual

1. Insert a straightened paper clip into the hole in the tray
tablet. If a microSD card is installed, gently take the microSD card out of the tray
2. Install a new microSD card into the tray with the metal contacts facing downward
the nano-SIM-card and microSD card slot until you hear a click
installed in correct orientation.

Replacing the base cover assembly

Before you start, read "Important safety information" on page v and print the following instructions.
Notes:
• Depending on the model, your computer might look slightly different from the illustrations in this topic.
• There might be a risk of short circuits if you remove the base cover assembly when your computer is
connected to ac power. Besides, the computer will not start after you reinstall the base cover assembly.
To start the computer, disconnect the ac power adapter and then reconnect it to the computer.
To replace the base cover assembly, do the following:
1. Disable the built-in battery. See "Disabling the built-in battery" on page 98.
2. Ensure that the computer is turned off and disconnected from ac power and all cables.
3. Close the computer display and turn the computer over.
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X280 User Guide
1 . The tray ejects. Then, slide the tray out of the
4 . Ensure that the new microSD card is
2
.
3 . Insert the tray into