Norstar Model T Series Phone Display Norstar Model M Series Phone Display
The Norstar Feature called Adjusting LCD Display Contrast Levels allows a station user to increase or decrease the contrast level.
1.) To use this feature press the or button followed by key pad asterick button then key pad seven button.
  
 Note : The LCD Display will show the current Contrast level and gives the options to lower the contrast by pressing the button below the LCD Display that reads DOWN or to increase the contrast level by selecting the button below the LCD Display that reads UP.

2.) Once the LCD Display Contrast Level is set where you want it ... press the button just below the LCD Display that reads OK.

   

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