How to adjust the Contrast on the DG5 display

Issue:
How to adjust the Contrast on the DG5 display  

Product line:
DataGuard 5 Displays  

Environment:
All Airflow units with DG5 board and Display  

Cause:
Text on the Screen is too dark or to light to read 

Resolution:
Dismount the display and turn it over to face the back side.  There will be a small hole in the upper right hand corner.  Using a small flathead screwdriver you can turn the dial to the right to brighten the display and to the left to make it darker.