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Casio FX-115MS

Released August 2000. Identified by the model name FX-115MS

Screen may appear to be blank.

The contrast may have been turned down on the calculator. Press the MODE button six times, then press the number 2, and then right arrow until the words or numbers appear on the screen.

The batteries may be dead. Replace the battery with a button battery model LR44. To do so, follow the (insert the guide here).

The screen may be completely black, or the screen my have splotches of black throughout.

The contrast may have been turned up on the calculator. Press the MODE button six times, then press the number 2, and then left arrow until the words or numbers appear on the screen.

If black spots appear the screen may have been broken. If this is the case, the entire motherboard needs to be replaced, follow the (insert guide here).

Some or all buttons are unresponsive when pressed.

A certain button may not be operating correctly. Follow the (insert guide here) for steps on how to replace the individual keys.

A part of the keyboard may be broken, or not responding. Follow the (insert guide here) for steps on how to replace the entire keyboard.

There may appear to be a crack in the plastic housing.

If the face plate has a crack in it, follow the (insert guide here) for steps on how to replace it.

If the back plate has a crack in it, follow the (insert guide here) for steps on how to replace it.

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