소개
Casio Advanced Scientific FX-991CW Battery Replacement.
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First, take the protective cover off the calculator.
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Then, turn the calculator over.
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Remove the Philips screw that holds the battery cover in place in the top-right corner.
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Then lift the cover off by lifting the right side of the cover up, and slide it out.
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Take a pointy, flat tool, like a flathead screwdriver, to pry the battery out of the compartment.
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Insert the new battery into the calculator by sliding it into place, then pushing it down, to ensure a good connection.
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Slide the battery cover into place.
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Then install the screw.
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Tighten the screw.
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NOTE: BELOW THIS GUIDE, THERE IS A NOTE THAT SAYS "TO REASSEMBLE THIS DEVICE, FOLLOW THESE DIRECTIONS IN REVERSE ORDER." DO NOT FOLLOW THAT STEP, AS THIS GUIDE IS COMPLETE!
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To reassemble your device, follow these instructions in reverse order.
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