Step 1 BATTERY

• This is the calculator in question.
• Features a black and white dot matrix screen.
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Step 2



• Turn the calculator over.
• Locate the six screws on the rear of the device.
• These are Philips #00 screws.
• Keep the screws you remove in a safe place so they don't get lost.
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Step 3
• Once the screws are removed, carefully lift the back panel off, lifting the top end first.
• Place the panel to one side.
• You can now see the battery.
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Step 4
• Remove the battery
• Lift it up from the right hand side to avoid damaging the spring.
• You may find this easier to do by prying it out with the screwdriver.
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Step 5
• Now you can insert the new battery
• Ensure you place it in spring-first.
• Congratulations! You have replaced the battery.
• When reassembling, take care not to trap the red or black wires in the screws as this would sever them, making the calculator unusable.
• Once reassembled, the calculator will be turned on. Turn it off to save battery by pressing Shift --> AC.
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