Planmeca Proline CC, Technical Manual

Page: 47 / 207

Chapter D - ADJUSTMENT & CALIBRATION
Planmeca Proline CC panoramic x-ray D-5
Technical Manual
Press the CTL-key to clear the error code.
Place the beam alignment tool into the secondary slot. Note which way round it goes. It is advis-
able to leave the cassette in position as it will reduce the amount of scattered radiation.
Figure 3
Enter the service mode (see section “How to enter/exit the service mode” on page B-6). The radi-
ation beam from the first slot can now be checked without the rotating unit moving.
Darken the room sufficiently so that you will be able to see the image of the radiation beam on
the alignment tool (it is fluorescent and will glow when the radiation beam strikes it), but not so
dark that you cannot see the borders of the alignment rectangle.
Select kilovolt and milliampere values high enough to enable the radiation beam to be seen in the
darkened room. The actual values will depend on how dark the room is.
Protect yourself from radiation and press the exposure button. The beam image will appear on
the alignment tool. Observe the beam from behind the tube head.
CAUTION Radiation is generated when the exposure button is pressed. Take adequate protection
measures. Keep the exposure time as short as possible.
The beam image should appear within the borders of the rectangle marked on the alignment tool
(if the beam is not correctly aligned see sections “Primary slot calibration” on page D-7 and
“Radiation beam too far to the right or left” on page D-8).
Figure 4
If the beam from the first slot is correctly aligned you should check the beam alignment of the
other slots. Note that the height of the other beams will vary as the slots are of different sizes.
CTL
Beam alignment tool
Secondary slot
kV
6 8 mA 4
UP
DOWN
PM 2002 CC X-RAY BEAM ALIGNMENT SCREEN no. 50972 NOTE: DO NOT LEAVE SCREEN IN DAYLIGHT
Primary slot number 0
Alignment rectangle
Beam
Beam alignment tool