Introduction

This guide demonstrates and describes proper removal and replacement of the back casing. It is needed to access other parts for repair or replacement.

Locate battery cover on the back of the case. Slide battery cover to the right to reveal the batteries.
  • Locate battery cover on the back of the case.

  • Slide battery cover to the right to reveal the batteries.

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Slide the red lock down. Slide the metal tab to the right of the top battery. Remove the 3-Volt Lithium Coin Cell Battery with black spudger.
  • Slide the red lock down.

    • Slide the metal tab to the right of the top battery.

    • Remove the 3-Volt Lithium Coin Cell Battery with black spudger.

  • Slide the red lock up.

    • Slide the metal tab to the right of the bottom battery.

    • Remove the 3-Volt Lithium Coin Cell Battery with the black spudger.

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Using a Torx, T-6 star-bit screwdriver, unscrew four 7.38 mm screws from battery housing. Unscrew four 7.15 mm screws from back casing. Using the blue plastic opener tool along the seam of the case, pry off front casing.
  • Using a Torx, T-6 star-bit screwdriver, unscrew four 7.38 mm screws from battery housing.

    • Unscrew four 7.15 mm screws from back casing.

    • Using the blue plastic opener tool along the seam of the case, pry off front casing.

    • Start prying from the bottom of the calculator as the casing hooks into the top.

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Conclusion

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

Calvin

Member since: 01/08/2015

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