Why are my function keys not working properly?
My function keys are not working properly.
In Run-Math program, if I press F1, nothing happens. If I press F2, it opens a list of options in the botton (LIST, MAT, CPLX, CALC, STAT). If I press F3 it opens another list of options (V-WIN, FACT, STAT, GRPH, DYNA). If I press F4, it acts as going into the previous screen (For example, If I am in Run-math and I was in the menu before, it goes to the menu and if I press it again it goes back to the Run-math). F5 acts as the Left arrow key in text editors. F6 acts as moving back a line (selecting the previous line).
Every other button work as intended.
I tried to reset the system through the menu, but since the function keys aren’t working properly, I can’t select the reset option. I’ve also tried the small button on the back of the calculator, but it doesn’t do much.