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My “two year old or older” 744 (or 741B or 743B) is asking me for the registration code?

April 26, 2017asking code registration year

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My “two year old or older” 744 (or 741B or 743B) is asking me for the registration code?

1 Answer

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The internal memory battery has expired and the calibrator can’t remember anything that’s manually entered after the power is turned off. The part number for the battery is 929369 which is a 3 volt Lithium CR2032 watch type battery which hides under the LCD display. Opening the calibrator will probably break the calibration seal so it will probably need recalibration, so having the Fluke repair department replace the battery and recalibrate the calibration might a better choice than the user changing the battery themselves. Cal labs should replace the memory battery every other year at recalibration time.