Jabra C220 사용자 설명서

2.4  Screen 

You can calibrate the touch screen if it is not responding accurately to your taps. 

1.  Tap the 

button on the Home screen. 

2.  Tap the 

 button. 

 

3.  Tap 

 to start the calibration. 

 

4.  Tap and hold the centre of the target.