How to clean TI-Nspire buttons

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How to clean TI-Nspire buttons: crwdns2935265:00crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Step 2 and 3 to detach the keyboard are optional, but may prevent permanent damage to the calculator.
Turn the calculator over and locate the sliding latch on the back of the calculator.

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