How do I Calibrate the ECO2 Touch Screen?
Over time you may find that when you press keys on your overlay, you don't see what you are supposed to see; or you may notice that the icons and images on the display screen don't seem to fit the display area as well as they once did. This is normal with a touch screen and can be easily fixed.
To Recalibrate the Display:
Note: You must be in CORE, the Toolbox, or a Custom Page to recalibrate your screen. You cannot do this from a menu or when you are using an internal computer application.
1. On the top front of the case, press and hold the TOOLS 
key while you activate the #2 USER DEFINED 
key on the case (The key that was pre-programmed as the SET-UP key).
NOTE: If your system lock is turned on, you must turn it off to Calibrate the Touchscreen.
2. Release both keys.
3. You see a message that tells you to TOUCH in the middle of 4 shrinking arrows. This screen is on a time limit which requires you to touch on this spot within 10 seconds. If this screen times out you must repeat steps 1 and 2.
4. With a stylus, the eraser end of a pencil, or a pen cap, press on the dot in the middle of the shrinking arrows. You will need to press and hold this location for 1 second. While holding this spot, you will notice the word TOUCH now goes to HOLD then to RELEASE when activated. Repeat this process at all 4 locations.
5. You will now see a screen asking you to Please Do Not Touch the Screen. This screen will time out and return you to the Toolbox.
6. Repeat this process if needed.