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My calculator is frozen what do i do - Texas Instruments TI-89 Calculator

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Hello
Press [2nd][QUIT] . if that does not work remove main batteries (one of them). Do not remove the backup battery.

Hope it helps.

Posted on Sep 12, 2009

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When you turn the machine down, it rests where you left it, in the state you left it: In case you wanted to continue with the same program, what you have already accomplished will not be lost.

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