Introdução
The keyboard mat is what makes contacts with the motherboard. If the keys are not working very well then the mat may need replacing.
O que você precisa
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Remove the battery cover.
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Remove the AAA batteries from the calculator.
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Unscrew the six 7.5mm T6 screws on the back case. You will need to use a screwdriver with a long and skinny head.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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