How do I factory reset the casio calculator?

1. Open the calculator, the display will show the cursor, and there is a [shift] key in the upper left corner of the keyboard.

2. After the [Shift] key is turned on, you will see a small black box in the upper left corner of the display, which is the "S", which is the symbol after the [Shift] key is triggered.

3. After pressing the [Shift] key and the [Shift] symbol appears in the upper left corner of the display. Press the keys on the numeric keypad.

4. Then you can see new information appear on the display. If you want to do a factory reset.

If you want to clean up all the contents and history of the calculator and the settings changes, choose the third one among the options on the display: all.

5. Press the keys in the numeric keypad to restore the calculator to factory settings.

6. Immediately after that, a new message will appear on the display, asking "Confirm factory reset?" Press [=] to equal the sign.

give consent; Press [ac] to cancel.

7. Press [=] equal to the sign) to confirm the factory reset.

8. Press the [=] button and the display will reappear with the message "Reset".

9. Press the [AC] button to exit the page.

10. After exiting, the calculator display at this time will return to the normal page, indicating that the factory settings have been restored.

1.Hold down [shift] and then [7] and then press [on] to prepare for the self-test. Release all keys and press 9;

Situation A: The screen is completely black, press ON to restore factory settings OK at this time.

Situation B: No response, press the key around 9 (hurry up, otherwise you will jump back after 6 seconds, and you will have to start from the beginning again);

Scenario B-A: Until Scenario A arises, the steps above;

2.If the above method does not work, take out the battery, cover it with solar panels, let it stand for 3 minutes, and then install it, or replace the battery.

3.If it still doesn't work, disassemble it:

1) Disassemble the back shell;

2) Carefully remove the screws on the motherboard (it should be a white lump, which can be picked off directly by hand);

3) Check whether there are debris or conductors between the button and the circuit board, and clean it up.

1. Press the key combination "shift and 9" on the calculator at the same time to enter the settings.

2. Next, you need to press "3" alland select Clear All.

3. Then press the "=" button, and then select yesoption to confirm.

4. Next, you can see complete displayed in the calculator display, press it"ac"to return to the main interface.

5. At this time, the casio calculator can be restored to factory settings.

1. Press the key combination "shift and 9" on the calculator at the same time to enter the settings, as shown in the figure below;

2. Next, you need to press "3" all and select Clear All, as shown in the figure below;

3. Then press the "=" button, and then select yesoption to confirm.

4. Next, you can see that the calculator is displayed on the calculator on the display, and then press "AC" to return to the main interface, as shown in the figure below;

5. At this point, the Casio calculator will be restored to its factory settings.

1. First take out the Akaishi calculator, and then press and hold the key combination "shift and 9" at the same time.

2. Then select "Back to 3" all.

3. Then click " on the calculator and select "Yes".

4. Complete will be displayed at this time, then look for it and click "AC" to return.

5. At this time, restore the factory settings and the Casio calculator enters normal mode.

Here's how to turn off this good machine with Casio Calculator:Tool: Casio Calculator FX-991CNX.

1. Press the shift button on the calculator first.

2. Press the power button again (the English version is off) to turn it off.

Product iterationThe fully automatic small calculator Casio 14-A was launched.

The personal calculator Casio Mini was launched.

The SL-800 is an ultra-thin calculator with a thickness of only the size of a credit card.

Launched the FX-7000G, a function calculator that can intuitively grasp mathematical formulas based on graphs.

The function calculator FX-82MS was launched.

Launched the first Chinese color map graphing calculator FX-CG20.

Launched the Chinese display function calculator FX-991CN X, and the Chinese limited edition human pronunciation voice machine DY-120.

The FX-CG50 graphing calculator was launched.

JW-200SC Yazhi series office machine was launched.

The DY-120 voice machine is limited to China.

The FX-991CN X function machine was launched in a new color.

1. After pressing the computer boot button, press the shift button, and press the number key 9 to enter the reset setting.

2. When the display shows clear, press the number key 3 (all).

3. When the display shows reset all, press the equal sign key (yes), and then press the AC key on the jump page.

This article takes Casio calculator FX-991CN x BU as an example for systems without this.