Planmeca Proline EC ceph, Technical Manual

Page: 75 / 210

Chapter D - ADJUSTMENT & CALIBRATION
Planmeca Proline EC X-ray unit D-23
FOCAL TROUGH POSITIONING LIGHT
Technical Manual
5 FOCAL TROUGH POSITIONING LIGHT
5.1 Checking the light
The position of the focal trough light beam should be checked. Use the ball phantom for
checking.
Figure 29
Press either of the focal trough positioning keys to switch the positioning light on and then a
second time to drive the patient positioning mechanism to 00 if it is not already there.
The focal trough positioning light beam should be positioned so that it is on the black refer-
ence line on the side of the ball phantom.
Figure 30
If the light beams do not coincide with the black lines or they are not in focus, they should be
adjusted.
START
END
PLANMECA
No.50971
X-LINE
Y-LINE
Ball phantom
mm
00
START
END
PLANMECA
No.50971
X-LINE
Y-LINE
Light beam