Planmeca ProMax 3D Max with ProTouch Technical Manual page 146

5 Panoramic and 3D calibrations
140 Planmeca ProMax 3D Max
8. Lock the shoulder motor by pressing the Release shoulder motor button.
9. Tighten the screws of the adjustment plate.
10. Press the Reposition shoulder pin point button, and remove the pin.
NOTE
The Reposition shoulder pin point button function replaces the Automatic
position sensor calibration function on the main calibration window in this
calibration.
CAUTION
Be sure to remove the alignment pin from the hole in the shoulder joint
before performing other S3 calibrations. The X-ray unit can begin moving
automatically during some calibrations and can be damaged if the
locking pin is in place.
Technical manual