Ricoh M0A0 Service Manual page 602

3.System Maintenance
MultiTouch Calibration
Calibrate the touch panel for multi-tap input methods such as pinch-in/pinch-out.
Touch the center of both "+" signs. The two "+" signs are displayed in the order of top left and bottom right. Repeat the
procedure. The touch panel will be calibrated.

If you want to adjust it again, press the [EX1] key.
 If you want to confirm that the calibration results are OK, press the [EX3] key to return to the top menu of [Self
Check].
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