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If you are having issues with the responsiveness or functionality of the key pad on your Casio Cassiopeia E-125, this guide will walk you through the process in 10-15 minutes.

In Step 9, proceed with caution: Potential for device damage. Do not pull apart the wires connecting the outer case.

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  1. Casio Cassiopeia E-125 Key Pad Replacement, Battery: step 1, image 1 of 1
    • Flip the device over to the back side.

  2. Casio Cassiopeia E-125 Key Pad Replacement: step 2, image 1 of 1
    • Slide the small switch on the back to "MAIN".

  3. Casio Cassiopeia E-125 Key Pad Replacement: step 3, image 1 of 1
    • Slide the battery cover downwards.

    • Pull off the battery cover.

  4. Casio Cassiopeia E-125 Key Pad Replacement: step 4, image 1 of 1
    • Pull the black tab to remove the battery.

  5. Casio Cassiopeia E-125 Key Pad Replacement, Touch Screen: step 5, image 1 of 1
    • Use the Phillips #00 screwdriver to remove the two screws near the top of the device.

  6. Casio Cassiopeia E-125 Key Pad Replacement: step 6, image 1 of 1
    • Use the Phillips #00 screwdriver to remove the two screws located inside the battery compartment.

  7. Casio Cassiopeia E-125 Key Pad Replacement: step 7, image 1 of 1
    • Use a spudger or opening tool to separate the two halves of the case.

  8. Casio Cassiopeia E-125 Key Pad Replacement: step 8, image 1 of 1
    • Pry the two halves of the case apart with the opening tool.

  9. Casio Cassiopeia E-125 Key Pad Replacement: step 9, image 1 of 1
    • Potential for device damage. Do not pull apart the wires connecting the outer case.

    • Lay the two halves of the outer case next to the central components as shown.

  10. Casio Cassiopeia E-125 Key Pad Replacement: step 10, image 1 of 1
    • Use the Philips #00 screwdriver to remove the three screws in the corners of the screen.

  11. Casio Cassiopeia E-125 Key Pad Replacement: step 11, image 1 of 2 Casio Cassiopeia E-125 Key Pad Replacement: step 11, image 2 of 2
    • Lift the tab on the motherboard and pull out the ribbon cable.

    • After the ribbon cable is detached from the motherboard, the touch screen is completely separated from the device.

  12. Casio Cassiopeia E-125 Key Pad Replacement, Key Pad: step 12, image 1 of 1
    • Use the Phillips #00 screwdriver and remove the five screws from the daughterboard.

  13. Casio Cassiopeia E-125 Key Pad Replacement: step 13, image 1 of 1
    • Pull the ribbon cable out of its port on the back of the keypad.

  14. Casio Cassiopeia E-125 Key Pad Replacement: step 14, image 1 of 1
    • Now, lift the keypad off the front case.

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

Ryan Fernandez

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