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  • Change The Contrast on My CEM+

    To change the contrast of the LCD display on a CEM+ with a blue main circuit board:
    -Press and hold the double back arrow (<<) and use the plus (+) and minus (-) keys to change values.

    Changing the contrast of the LCD display on a CEM+ with a green main circuit board requires adjustments on the interior circuit board under power so it should only be performed by a trained service technician.