Planmeca ProMax Pan/Ceph Calibration Manual page 90

Loosen the 3mm locking screw on the outside, closet to the column. (Figure
189)
Take another exposure. If aligned then re-tighten the inner screws and move
onto Beam Check.
5.5 Angled
5.5.a Left
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22811.20.Rev001 07.31.2018
Figure 189
If angled left, then loosen the nuts and loosen the right locking screw
and tighten the left locking screw. (Figure 190)
Figure 190
Take another exposure. If aligned then re-tighten the nuts and move
onto Beam Check.
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