Planmeca Viso Technical Manual page 95

Adjusting the collimator blade angles
Technical manual
NOTE
Do not tighten hard the opposite site screw but only screw it until it
reaches the other screw.
3. A special extended 2 mm Allen key is required to reach and to adjust the
screws.
4. The adjustment screws are accessible through the holes located on the
each side of the collimator frame. To find an appropriate adjustment
screw, there are figures to help to locate the adjustment screws later in
these instructions.
5. Adjust the collimator blades with small steps, rotate the adjustment
screws e.g. only 1/8, 1/4 or 1/2 rounds at a time.
6. From the Report or from the Collimator adjustment -angle results on the
Device tool display, find out which blade and which direction the blade
angle should be adjusted.
7. The test image on the Device tool display is positioned as seen from the
tube head direction, that is, it is a left-right mirror image. The blades to
be adjusted according to the test image are shown with figures later in
these instructions.
Remove the tube head covers, see section "Removing C-arm covers" on
page 124.
If the right side borderline in the test image is tilted, use the screws (1) and
(2) to adjust the collimator blade (3) angle.
If the left side borderline in the test image is tilted, use the screws (4) and (5)
to adjust the collimator blade (6) angle.
5 Adjustments and calibrations
Planmeca Viso 89