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Press and Hold the "Reset" button for three seconds. The lamp timer will be reset. DP6850 1500 1500 Hours Press and Hold the "Reset" button on the keypad or "Timer" on the remote for three seconds. The lamp hours used will be displayed. Press and Hold the "Reset" button on the keypad or "Timer" on the remote control for three seconds, and the lamp hours used will be displayed. Release button. While the Lamp Time is being displayed, press the "Reset" button on the keypad or the "Timer" button on