Gendex ORTHORALIX 9200 Service Manual page 128

15.
After the adjustment, make another exposure to check the
result: to do it, click first on Stop and then click on Static im-
age.
16.
Once the adjustment is done in the middle position of the
ceph projection, the adjustment must be checked also in
the positions corresponding to the start and to the end of
the ceph projection.
So, in the Service Program
pushbutton on the operator panel to select the small patient
and press reset: the unit will automatically move the rotating
arm, the secondary ceph collimator and the DMU to the start
position of the ceph projection.
17.
Make an exposure and check the X-ray field alignment.
18.
Repeat the check by selecting the big patient (and then press
reset) in the Service Program
unit will automatically move the rotating arm, the secondary
ceph collimator and the DMU to the end position of the ceph
projection.
Step (2):
After the alignment of the ceph secondary collimator respect to
the DMU, it is necessary to align the ceph lead plates (installed
on the primary collimator) respect to the ceph secondary col-
limator,
proceeding as follow:
1.
Install the ceph lead plates support (a) (with the two ceph
lead plates (b)) on the collimator(c), by means of the two
screws (d): be sure to install the support in the middle posi-
2.
Move the collimator in order to select the H22 lead plate.
3.
In the Service Program
medium patient and press reset: the unit will automatically
move the rotating arm, the secondary ceph collimator and
the DMU in the middle of the ceph projection.
Gendex Dental Systems 4519-190-71193-7
, after the se-
, so that the
press the patient
F-59
Printed on: 20 Apr 2012, 04:59:40 pm; Printed by: UWE.ZELLER
ORTHORALIX 9200 Service Manual
4.
Now, make an exposure; after the preview, the following will
appear on the monitor:
vertical dimension is compressed)
the X-ray field respect to the digital sensor.
The purpose is to have the black rectangle in the middle of
the white rectangle, with a white uniform unexposed area
all around. Look at the following examples.
The grey sections may help in understanding the correct
or wrong aligment and how much the lead plate must be
adjusted.
5.
two screws (a) on the collimator and move the ceph lead
plates support (b).
6.
If the X-ray field shall be vertically adjusted, unlock the two
screws (c) and move the lead plate (d) in the vertical desired
position.
7.
After the adjustment, make another exposure to check the
result: to do it, click first on Stop and then click on Static im-
age.
8.
Then, move the collimator in order to select the H18 lead
plate.
9.
Make an exposure and check the vertical X-ray field align-
ment.
(03.0)E