Introduction
Tools
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Flip the device over so that the batteries are closest to you.
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Remove the battery lid by pressing the battery cover's tab and pulling it away from the device.
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Push the battery against the spring and lift it out of the casing.
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Repeat with the other battery.
 
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Flip the Luna back over so that the buttons are facing upward and the LCD screen is facing you.
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Gently tilt the lid back 45 degrees so that the inside is exposed.
 
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Unscrew the four black 7mm screws with the Phillips #1 screw driver that hold the middle circuit board to the top case.
 
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Unscrew the three 7 mm black screws using the Philips #1 screwdriver on the back end of the left and right circuit board.
 
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Turn the circuit boards over. Remove the two connections on the left side by pulling on the tabs.
 
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Press the green tabs on the underside of the top case together and push them through the plastic casing.
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Turn the top casing right side up and remove the button and spring.
 
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To reassemble your device, follow these instructions in reverse order.