How to Turn on Diagnostics for Your TI-89


Texas Instruments makes a wide variety of electronics, but a sub-division for education puts its focus on advanced calculators for uses both inside and outside the classroom. Among these calculator lines is the TI-89 series. The TI-89 Titanium was the finished TI-89 product, which features 16 preloaded apps, a USB port for easy connectivity and three times the memory of the original TI-89. However, as with any powerful computer, you may sometimes need to run diagnostics on the hardware and software. Fortunately, the TI-89 includes built-in diagnostic self-tests for such a task and can be accessed with a few steps.

  • Turn on the TI-89 calculator and allow the system to boot up, indicated by solid black on the screen. Wait for the main screen to display. Press F5, located in the top right.

  • Use the arrow keys in the top right to select the "PrgmIO" toolbar option if prompted. Press the green diamond key and then press the "Clear" button to view the copyright screen.

  • Press the "alpha" button and then select the "3" key, which will stand for "S" in alpha mode. Wait for the Self-test screen to be displayed, indicated by the date at the top and a list of 10 options.

  • Run the tests you would like to activate by using the corresponding numbers. Allow the tests to complete. You may repeat this step with different tests as many times as you may like.

  • Go back to the home screen at any time by pressing the "0" key followed by the blue "2nd" key. Press the "Esc" key, which will stand for Quit in "2nd" mode, to exit.

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