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Casio FX-991EX Battery Replacement

소개

The Casio FX-991EX can malfunction if the battery is discharged, even with solar power. Thankfully, replacing it is a simple job.

필요한 것

  1. Casio FX-991EX Battery Replacement, Remove the battery cover: 1 단계, 이미지 2개 중 1개 Casio FX-991EX Battery Replacement, Remove the battery cover: 1 단계, 이미지 2개 중 2개

    • Remove the battery cover's screw using a Philips #0 screwdriver.

    편집

  2. Casio FX-991EX Battery Replacement, Remove the battery: 2 단계, 이미지 2개 중 1개 Casio FX-991EX Battery Replacement, Remove the battery: 2 단계, 이미지 2개 중 2개

    • Use a spudger to remove the battery using the gap to the right.

    • Don't use sharp objects that may cause harm or damage. The battery can be hard to pop out, but will do so. Dispose of a damaged battery via an e-waste collection site.

    편집

  4. Casio FX-991EX Battery Replacement, Replace the battery: 3 단계, 이미지 2개 중 1개 Casio FX-991EX Battery Replacement, Replace the battery: 3 단계, 이미지 2개 중 2개

    • The FX-991EX uses a 1.5V LR44 battery.

    • Slot the new battery into the compartment. Ensure that the positive side (with writing) faces up...

    • And the negative side faces the calculator's screen.

    편집

  5. Casio FX-991EX Battery Replacement, Screw the cover back on: 4 단계, 이미지 1개 중 1개

    • Slot the battery cover back on and screw it down.

    편집
결론

If you need to reset the calculator after this, it's SHIFT+9 > 3 > =.

Otherwise, you're ready to crunch numbers again!

다른 4명이 해당 안내서를 완성하였습니다.

작성자

1다른 기여자 명과 함께

FarmYard Gaming

회원 가입일: 08/27/20

1,850 평판

안내서 1개를 작성함

배지: 31

배지 +28개 더

4가이드 댓글

Just discovered during a lecture that my battery has become a spicy pillow - if you're leaving this in storage be careful and monitor it, lest it explode and/or warp the case irreparably.

FarmYard Gaming - 답글

Which size of screws

李生山 -

I found nothing in the slot. What can i do?

UTL Shaion - 답글

Do you see any wires connecting the battery to the circuit board? I don’t see any on mine. Both of ours may be fake lmao

Ivan Liu -

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