Planmeca Proline CC Technical Manual page 147

6.6 Checking the head support position
6
CEPH
Ball
Ring
Correct
Technical Manual
Press the ceph mode selection key to enter the ceph mode if you are not already in it. The rotat-
ing unit will move automatically to the correct position for taking cephalometric exposures. Image
area 4 will be automatically selected. Press the collimator selection key twice to select the image
area 6.
Remove the sensor alignment tool from the cephalostat quick connector mechanism, if needed.
Attach the sensor head to the quick connector.
Rotate the head support to the 0° position and place the two ear posts into their holders if they
are not already installed.
Head support
Figure 106
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 an exposed image
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.
On the image you will see the images of a metal ball and a metal ring. 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.
If the ball touches the ring the ear posts must be adjusted. Refer to section "Head support adjust-
ment" on page E-60.
Chapter E - DIMAX3 DIGITAL SYSTEM ADJUSTMENT
Correct
Planmeca Proline CC panoramic x-ray E-59
Wrong