Question about Texas Instruments TI-89 Calculator

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Ti-89 wont turn off

I have the TI-89 Titanium graphing calculator for my calculus class, and when i first opened it, it wouldn't turn on, i have finally gotten it to turn on but now to turn it off i have to take out batteries, what do you think will fix it?

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Re: ti-89 wont turn off

I'm having the same problem:(
I need to solve this urgently, i can't stand always being removing the batteries... please help me!!!

Posted on Jan 20, 2008

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The screen on my TI-89 Titanium turned blue after replacing batteries? How do I fix this? It turns on and off but does not respond to any other buttons.

If you cannot see anything on the screen, you may need to adjust the graphing TI 89 Titanium calculator contrast :

1.To darken the screen, press and release 2nd key, and then press and hold up-arrow key until the display is sufficiently dark.

2. To lighten the screen, press and release 2nd key, and then press and hold down-arrow key until the display is sufficiently light.

Sep 01, 2012 | Texas Instruments TI-89 Calculator

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Ti-89 titanium diagnostics

There is no DiagnosticsOn command in the TI 89 Titanium. The command exists on the TI83/84PLUS where it displays the r and r^2 coefficients. On the TI89 , the correlation coefficient and the determination coefficient (r, r^2) are displayed by default among the statistics if THE REGRESSION MODEL includes them. If they are not defined by the regression model they will not be displayed. In short, you do not have to turn diagnostics ON.

Apr 17, 2012 | Texas Instruments TI-89 Calculator

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How to un froze the TI-89 titanuim will not turn off.

Press left and right arrow and 2nd keys simultaneosly, hold it and then press ON. Release all keys at the same time and you will reset TI 89 Titanium

Feb 27, 2012 | Texas Instruments TI-89 Calculator

1 Answer

When I try to graph something, I see the graph, but I no longer see the x and y axis. This happened on my TI-89 titanium

Enter a function in Y= Editor, then draw its graph.


While the graph is still displayed Press F1


Press 9:Format to open the FORMAT screen

Toggle the Axes ON

Aug 26, 2011 | Texas Instruments TI-89 Calculator

1 Answer

My TI-89 Titanium won't graph sin, cos, or tan?

Set your calculator to RAD mode and then graphing functions.
See example for y=sin x


Nov 10, 2010 | Texas Instruments TI-89 Calculator

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I accidentally resetted my ti-89 titanium

Use the TIConnect software to connect the calculator to the computer.Then in the TIconnect main window you can drag and drop the applications you downloaded from They will be transferred to the calculator.
I cannot understand why you cannot graph normally since the graphing is not an application, it is part of the OS.
While you are connected to the Internet and to the calculator, you may want to reinstall the OS directly from to your calculator
Hope it helps.

Feb 22, 2008 | Texas Instruments TI-89 Calculator

1 Answer

Ti-89 Doesn't Turn OFF!!

1) Update the OS from the TI site.
2) check if button is sticking(not necessarily just the plastic button, but what it hits on the inside... you can clean the contacts on the inside of the calc with a Q-tip and rubbing alcohol.)

I don't have much experience with this specific calculator but those are my best bets.

good luck

Oct 31, 2007 | Texas Instruments TI-89 Calculator

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