Planmeca Proline XC Technical Manual page 149

PATIENT POSITIONING MECHANISM Chapter E - DIMAX3 DIGITAL SYSTEM ADJUSTMENT
If the distance from the middle ball to the center of the tenth ball on the left-hand side is more
than 122mm and on the right-hand side less than 118mm then the patient positioning mecha-
nism must be moved away from the column (Fig. 80). Note that the distance between the line
on the underside of the alignment ruler and the y-line on the ball phantom must be less than
±1mm, see section "Adjustment in ball phantom's y-direction" on page E-41.
Right-hand side
More than 122 mm Less than 118 mm
Figure 80
If the distance from the middle ball to the center of the tenth ball on the left-hand side is less
than 118mm and on the right-hand side more than 122mm then the patient positioning mech-
anism must be moved towards the column (Fig. 81). Note that the distance between the line
on the underside of the alignment ruler and the y-line on the ball phantom must be less than
±1mm, see section "Adjustment in ball phantom's y-direction" on page E-41.
Right-hand side
Less than 118 mm More than 122 mm
Figure 81
Planmeca Proline XC X-ray unit E-39
Technical Manual