Planmeca Proline CC Technical Manual page 59

Secondary slot side
°
1 2
mm
CTL
°
0 0
mm
Checking the eccentricity of the rotation movement
READY
PRET
E r 0 0
Technical Manual
Leave the ball phantom tool in position and place the alignment ruler in position between the pri-
mary slot and the secondary slot as described earlier. The line on the alignment ruler must line
up with the x-line on the ball phantom (Fig. 25).
P L A N M E C A
S T A R T
Alignment ruler
Ball phantom
Figure 25 0° position
Enter the service mode.
Press either of the patient positioning keys once to switch the patient positioning lights on then a
second time to adjust the position of the patient positioning mechanism until the line on the ball
phantom lines up with the line on the alignment ruler. The position of the mechanism will appear
on the display.
Press the CTL-key. The indicator light will come on.
Hold the patient positioning plus (+) key down (about five seconds) until you hear a signal and
the millimeter display zeroes. This indicates that the new position of the patient positioning mech-
anism has been programmed into the memory.
Remove the alignment pin and exit the service mode.
Take another ball phantom picture to check the alignment again. Readjust if necessary.
The eccentricity of the rotation movement must be checked after the patient positioning mecha-
nism adjustment. This is done by comparing the distances between the line on the alignment
ruler and the x-line on the ball phantom in "0° position" and in "180° position". If the deviation is
more than ±1 mm, the position of the secondary slot must be adjusted.
Entering the 180° position:
Enter the test mode.
Press the ready key to drive the x-ray unit to the exposure position. When the unit is ready the
indicator light will come on.
Start to take a test exposure by pressing and holding down exposure button on the remote con-
trol. Stop pressing the exposure button after about 16 seconds so that the rotating unit stops
moving (near the end position).
An error code will appear on the display. Clear the error code with the CTL-key.
Chapter
N o . 5 0 9 7 1
E N D
X - L I N E
Planmeca Proline CC panoramic x-ray D-17
D - ADJUSTMENT & CALIBRATION
Tube head side