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Introdução

Is a button on your calculator hard to push or stuck in place? This inconvenience can be easily fixed with this guide. You will be removing components of your calculator in order to reveal the buttons and then carefully making the necessary changes. In no time you will have your calculator up and running again.

Peças

Nenhum componente especificado.

  1. Repairing Buttons on Casio fx-300ES Calculator, Calculator: passo 1, imagem 1 %32 Repairing Buttons on Casio fx-300ES Calculator, Calculator: passo 1, imagem 2 %32
    • Remove the six 5 mm screws on the back of the calculator.

  2. Repairing Buttons on Casio fx-300ES Calculator: passo 2, imagem 1 %32 Repairing Buttons on Casio fx-300ES Calculator: passo 2, imagem 2 %32
    • Carefully remove the back plate to reveal the circuit board and the battery.

  3. Repairing Buttons on Casio fx-300ES Calculator: passo 3, imagem 1 %32 Repairing Buttons on Casio fx-300ES Calculator: passo 3, imagem 2 %32 Repairing Buttons on Casio fx-300ES Calculator: passo 3, imagem 3 %32
    • Remove the four 4 mm screws from the circuit board.

  4. Repairing Buttons on Casio fx-300ES Calculator: passo 4, imagem 1 %32
    • Be aware of the placement of the blue, black, red, and yellow wires because they will fall out when the next step is taken.

  5. Repairing Buttons on Casio fx-300ES Calculator: passo 5, imagem 1 %32 Repairing Buttons on Casio fx-300ES Calculator: passo 5, imagem 2 %32 Repairing Buttons on Casio fx-300ES Calculator: passo 5, imagem 3 %32
    • Carefully lift the circuit board while leaving the grey rubber piece face down.

    • Simply flip the circuit board and the screen over but do not remove them fully.

    • Make sure the calculator is face down.

    • Buttons are loose do not flip calculator over.

  6. Repairing Buttons on Casio fx-300ES Calculator: passo 6, imagem 1 %32 Repairing Buttons on Casio fx-300ES Calculator: passo 6, imagem 2 %32 Repairing Buttons on Casio fx-300ES Calculator: passo 6, imagem 3 %32
    • Now lift the grey rubber piece off to reveal the individual buttons.

    • Buttons are loose make sure they do not come off with the rubber piece.

  7. Repairing Buttons on Casio fx-300ES Calculator: passo 7, imagem 1 %32 Repairing Buttons on Casio fx-300ES Calculator: passo 7, imagem 2 %32 Repairing Buttons on Casio fx-300ES Calculator: passo 7, imagem 3 %32
    • To remove the buttons you can use your screwdriver and lightly flip them out of their individual spaces.

    • You can now access all the buttons and make any alterations needed.

  8. Repairing Buttons on Casio fx-300ES Calculator: passo 8, imagem 1 %32
    • Refer to this picture if any buttons get misplaced or fall out.

Conclusão

To reassemble your device, follow these instructions in reverse order.

2 outras pessoas concluíram este guia.

Daniel Riedeman

Membro desde: 09/04/2015

165 Reputação

Autoria de 1 guia

Team

Cal Poly, Team 28-2, Green Spring 2015 Membro de Cal Poly, Team 28-2, Green Spring 2015

CPSU-GREEN-S15S28G2

4 Membros

2 Guias de autoria

3 Comments

Great photos make sure to replace the stock photos with those you take. Maybe retake photos with white background.

Kathryn Webb - Responder

my answer key button not working. when i press button it shows the X10 so what can i do plzz give tips for repairing

ayush shukla - Responder

Halp my board is stuck to the front plate sith super glue from previous owner.

[deleted] - Responder

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