Inleiding
When you remove your calculators AAA batteries, or if they die, the backup battery powers the calculator so your information is not lost. If you seem to lose programs or variables in your calculator, you may want to replace your backup battery.
Wat je nodig hebt
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Remove the battery cover.
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Remove the AAA batteries from the calculator.
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Bijna klaar!
To reassemble your device, follow these instructions in reverse order.
Conclusie
To reassemble your device, follow these instructions in reverse order.