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Page 31INF7001a Hardware Guide
4) Do not touch the screen until the white cross and the message Touch + for more than 1 second" displays.
5) Using a stylus (or your finger), touch and hold the white cross until the cross turns green and the message Please
release your finger displays.
6) Repeat steps 4 and 5 until calibration is complete.
7) Click OK, or to start the calibration process again, click Reset Calibration.