Calibrate the control panel
Use the following procedure to calibrate the control panel:
1. Turn the device off.
2. Press and hold the # key and the C key.
3. Turn the device on.
4. When a small white square appears in the upper-left corner of the control-panel display, touch
the square with a stylus.
5. When a small white square appears in the lower-left corner of the control-panel display, touch
the square with a stylus.
6. Allow the device to finish the boot process.
Hope this helps.
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