Planmeca Proline XC, Technical Manual, Page: 66 / 258

Chapter D - ADJUSTMENT & CALIBRATION
D-12 Planmeca Proline XC X-ray unit
PANORAMIC X-RAY BEAM ADJUSTMENT
Technical Manual
2.3 Primary collimator adjustment, Planmeca Proline XC Pan/
Ceph X-ray unit
WARNING
DO NOT ADJUST THE POSITION OF THE PRIMARY COLLIMATOR MECHANISM WHILE
X-RAYS ARE BEING GENERATED. CHECK THE BEAM POSITION, ADJUST THE POSI-
TION WITH THE X-RAYS SWITCHED OFF AND THEN RECHECK THE POSITION. IF THE
BEAM IS STILL MISALIGNED REPEAT THE OPERATION.
Radiation beam too low, too high or not vertical
If the beams are too high or too low, loosen the two screws that hold the panoramic primary
collimator plate in position and adjust as necessary. Tighten the screws and recheck the
beam. Repeat the above procedure until the beam is correctly positioned.
Figure 20
If the beam is not vertical, loosen the three screws that hold the primary collimator mecha-
nism to the collimator tube and rotate the mechanism until the beam is correctly positioned.
Tighten the screws and recheck the beam. Repeat the above procedure until the beam is cor-
rectly positioned.
Figure 21
NOTE THE CEPH PRIMARY COLLIMATORS ARE ALSO ADJUSTED ACCORDING TO
INSTRUCTIONS GIVEN IN THIS SECTION.
Securing screws
Beam too low Beam too high
X
C
_adj_c
ollim.eps
Securing screws
Beam not vertical