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DST Setting Module : 3159 Firstly, make sure it is in the Timekeeping Mode. <Timekeeping Mode Screen> -Upper display Day of week, Date -Lower display Current time If you don't know which mode it is, press (C) button several times to change the mode.
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Current DST setting will appear. Use (D) button to toggle ON and OFF. Press (A) button to exit the setting screen.