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Power off the GC2 device. If connected to a computer, disconnect the USB cord.
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Wait 5-10 seconds before powering device on again. Do NOT plug the USB cable into the GC2 at this time.
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Place a ball in the left or right hitting zone
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If the device successfully locks onto the ball as indicated by a solid green light, but does not display data after ball strike, please consult the topic: “Determining when the Flash Module requires replacement”.