Question about Casio FX-9860G Graphic Calculator

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The contrast on my casio graphic 35 calculator seems to be at maximum, so the screen is black. Could you explain how to get to the appropriate menu to change the contrast setting without being able to see?

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Press menu then the following alpha "F" "F1" then press left on the arrow key till desired contrast is set. That is it.

Posted on Mar 05, 2010


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1 Answer

Screen starts fade away

You can try to increase the contrast of the display.
Press Menu.
Press F:System
Press F1:Contrast.
Use the right arrow to increase contrast. If there is no change, the calculator may be damaged. But do a calculator reset just in case

Mar 24, 2014 | Casio FX-9860GII SD Power Graphic...

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My calculator is to light and i have no 2nd key

The key is marked [Shift] on Casios, [2nd] on TI's, and [2nd F] on Sharps. I have seen some cheap calculators that mark the key as [Inv]. HP calculators are rather different in that respect.

Sep 20, 2013 | Casio fx-300ES Calculator

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Hello , I seem to have a problem with my casio fx~9750GII module calculator. When I turn on my calculator , it stays frozen on the MAIN MENU set i.e consisting of RUN-MAT,STAT,GRAPH,DYNA,TABLE,RECUR,CONICS...

Checking the batteries is the first thing one should try. It is possible that for some reason the screen may be too dim.
Reset the calculator by pressing the button on the back. The screen should show the menus. To adjust the contrast you must press the E key (no need to press the ALPHA key for that.) then press F1 to access the contrast setting feature. Press the Right pointing arrow to increase the contrast.

Aug 14, 2013 | Casio FX-9750GPlus Calculator

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Finding max and min

After you create a graph, have the calculator draw it. To find the minimum or maximum press SHIFT F5 G-Solv. Use the appropriate tabs MAX, MIN.

Nov 29, 2012 | Casio FX9750GII Graphic Calculator

1 Answer

The contrast of my calculation is low

Turn calculator ON.
Press the Menu button.
Use arrows to get to the SYSTEM icon.
Press Left Arrow to decrease contrast or Right Arrow to increase contrast (darken the screen.
If the screen is not legible (too light or too dark) you use ALPHA E to access the System menu.

Jan 31, 2012 | Casio Algebra FX 2.0 Calculator

1 Answer

How do you change the contrast screen from dark to light

From the main screen, select the "CONT" icon and press EXE. Use cursor-left/right to adjust the contrast. When done press MENU to exit.

Full details are under "Contrast Adjustment" in the "Getting Acquainted" section of the manual (page 11 in my copy). If you need to see the manual, you can view one online at

Jul 25, 2011 | Casio FX-9750GPlus Calculator

1 Answer

Casio CFX-9850GB Plus calculator will not switch on when AC/on pressed, all 4 AAA and 3v backup battery are new.

If it is just a matter of the screen being too dim, you can actually increase the contrast.

  1. Turn calculator ON
  2. Press [MENU] even if you do not see anything
  3. Press [ALPHA][COS] sequence to access the letter E.
  4. Press repeatedly the Right Arrow till the contrast is adequate.

Jun 14, 2010 | Casio CFX-9850G Plus Calculator

1 Answer

My calculator can not be switched on ..If I press the on button I can see any display ..I tried changing the four batteries. I havent used it for a while.

If it is just a matter of the screen being too dim, you can actually increase the contrast.

  1. Turn calculator ON
  2. Press [MENU] even if you do not see anything
  3. Press [ALPHA][COS] sequence to access the letter E.
  4. Press repeatedly the Right Arrow till the contrast is adequate.

Apr 09, 2009 | Casio CFX-9850G Plus Calculator

4 Answers

Screen fully black

Black-Screen/Black-Pixel Fix for TI-Calculator

This will erase all memory and reset defaults.

1. Remove 1 AAA Battery
2. Press and Hold 'ON' for 30 seconds
3. Replace AAA Battery
4. Adjust Contrast to appropriate level

If this fails, try again with ALL Batteries removed including
the backup Lithium Battery.

If all else fails, try the following reset procedure:

1. Remove ALL Batteries (inc. Backup)
2. Let Calculator sit with no batteries for 2~4 hours.
3. Hold 'ON' for 30 seconds.
4. Replace all the batteries (May be good idea to use new batteries
just in case old ones were dead)
5. Turn on Calculator
6. Change Contrast to appropriate level

- Remember to use correct batteries or calculator may not work. The
correct batteries are Alkaline, Rechargable Batteries are TOO WEAK,
Heavy Duty batteries are TOO STRONG.

Oct 09, 2008 | Texas Instruments TI-89 Calculator

1 Answer

Screen contrast?

Hello, I think I can help you.

1. Use the cursor keys to select the system icon,
2. Press the "exe" button then press F1 to display the
contrast adjustment screen.
3. The right cursor will darken the screen while
the left will lighten it.
4. Selecting the F1 (INIT) option will return the calculator
to it's initial default.

Hope this helps!

Sep 03, 2008 | Casio FX-9860G Graphic Calculator

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