Planmeca Proline XC Technical Manual page 182

Chapter E - DIMAX3 DIGITAL SYSTEM ADJUSTMENT
Rotate the head support to the 90° position and place the two ear posts into their holders if
they are not already installed.
Figure 136
Embedded in the end of the left (V or L) ear post there is a metal ball and embedded in the
end of the right ear post (O or R) is a metal ring. The images of these that appear on a fluo-
rescent screen of the beam alignment tool are used to check the alignment of the ear posts.
Select exposure values of approximately 70 and a milliampere value of 10.
Stand behind the tube head, protect yourself from radiation and take an exposure.
You will see the images of a metal ball and a metal ring on the beam alignment tool. The must
be concentric, or if not exactly concentric there must be a small gap between the edge of the
ball and the inner edge of the circle.
Ball
Ring
Correct
Figure 137
If the ball touches the ring the ear posts must be adjusted. Refer to section 7.6 "Head support
adjustment" on page E-73.
E-72 Planmeca Proline XC X-ray unit
Head support
Correct
CEPHALOSTAT ADJUSTMENT
Wrong
Technical Manual