Top 20 Casio MJ-120T-W Electronic Calculator BIG DISPLAY Solar Tax Calculator - Page 4 Questions & Answers

To set a Tax Percent rate, first, turn the calculator OFF and then turn it ON. Press and hold the [%]key.

Change the output display to MathIO. You may be able to display square roots only: so no cube roots, nor fourth...

The print head needs cleaning. Use a cotton swab and alcohol to clean it.

No, we actually have not one part for any product at all. We are an information service only. Please type your needs into the search engine of your computer and see if there is a dealer who can help you. God bless your efforts.

Press the Shift/Mode key and set the Input/Output to MathIO. Even that will not guarantee that the display will be in root form. Only square roots are possible.

I rekon ya over load it now by bashing the ca button. try removing the battery, leave it out fer 5 minutes the put it back in then hold the power button down for 5 seconds for a hard reset and it it should be good to go...

If the i8ntegral is difficult to calculate, it may take a long time. During the calculation, the machine is busy and does not answer.

Press the Shift/Mode key and set the Input/Output to MathIO. Even that will not guarantee that the display will be in root form. Only square roots are possible.

I've hunted and hunted for you but it looks like a "Repair Center" item? Start here: https://www.casio.com/support/authorized-service Authorized Service and Support-Service Centers Primary Warranty Authorized Service Centers (U.S.A.) For Musical Instruments (Models AL, AP, PX, WK only), please go here.

East Coast Service Location

Casio Factory Service Center(Opens the Casio Factory Service Center website in new window)(Opens the website in new window)

West Coast Service Location

The Time Machine 2335 Honolulu Avenue Suite B Montrose, CA 91020 Phone: 818-249-6007 Fax: 818-249-9412

Press the S-D button to switch between fractions and decimals.

Any chance the ribbon is installed upside down?

https://casio.ledudu.com/images/calculs/casio/manuels/ql10.pdf

http://support.casio.com/pdf/004/fx115MS_991MS_E.pdf copy and paste this address into your browser's address window and download the owner's manual

I have searched casio and various old manual sites and at this point have found the following manual to be as close to what you are looking for among a multitude of variations. It is not a problem to find a manual to a FX-82C or FX-82AU but the A variation has eluded me: http://casio.edu.monacocorp.co.nz/products/fx82ausplus/pdf/Using_2082AU_20PLUS_20manual.pdf Notice that this comes from a New Zealand site. It makes me wonder if AU might relate to Australia. Only Casio support would know for sure.

Enter the number in the correct units (degrees or radians) press the key for the function you want and get the result.

If the calculator has this feature, then you should set it to Matrix calculations. Then you define appropriate matrices.

Here is a user guide that should prove beneficial. I hope it helps. http://support.casio.com/en/manual/004/fx-300ES_PLUS_EN.pdf

Read the manual. It is more likely that you are not using it correctly.

You can't do that on Casio fx-991es plus calculator. Usually, infinity symbol available in calculators with CAS (Computer Algebra System).

Try to understand the theory from your math books. Do some examples. Then try to use the calculator.