Introduction

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.

Parts

No parts required.

Remove the six 5 mm screws on the back of the calculator. Remove the six 5 mm screws on the back of the calculator.
  • Remove the six 5 mm screws on the back of the calculator.

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Carefully remove the back plate to reveal the circuit board and the battery. Carefully remove the back plate to reveal the circuit board and the battery.
  • Carefully remove the back plate to reveal the circuit board and the battery.

"the" circuit board and battery.

Timothy Wong - Reply

Remove the four 4 mm screws from the circuit board. Remove the four 4 mm screws from the circuit board. Remove the four 4 mm screws from the circuit board.
  • Remove the four 4 mm screws from the circuit board.

remove "all" four screws from ...

Timothy Wong - Reply

Black Friday
Broken doesn't stand a chance.
Be aware of the placement of the blue, black, red, and yellow wires because they will fall out when the next step is taken.
  • Be aware of the placement of the blue, black, red, and yellow wires because they will fall out when the next step is taken.

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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.
  • 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.

flip up "the" circuit board

Timothy Wong - Reply

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

to "the" stuck button(s).

Timothy Wong - Reply

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

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Refer to this picture if any buttons get misplaced or fall out.
  • Refer to this picture if any buttons get misplaced or fall out.

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Conclusion

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

2 other people completed this guide.

Daniel Riedeman

Member since: 04/09/2015

165 Reputation

1 Guide authored

Team

Cal Poly, Team 28-2, Green Spring 2015 Member of Cal Poly, Team 28-2, Green Spring 2015

CPSU-GREEN-S15S28G2

4 Members

2 Guides authored

3 Comments

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

Kathryn Webb - Reply

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 - Reply

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

StevenDude123 - Reply

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