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Section F
4.3.22. Still transcan
With this program you can have an X-ray emission with the
parameters of the transcan technique, without having rotation; the
rotating arm can be in any position (so it is not necessary to reach
the reset position); the READY LED on the operator panel is always
ON, enabling the exposure even if the cassette is not inserted.
This is useful whenever you need to have an exposure without
rotation (i.e. centering the panoramic/tscan X-ray beam on the
secondary slit, measurement of kV and mA, measurement of the
dose emitted).
The following message will appear on the display:
STILL TRANSCAN
Press DUMMY RUN to go
1)
Press the DUMMY RUN key on the keyboard
2)
select the desired exposure parameters (kV and mA)
3)
make an exposure
4)
switch off the system to leave the service program.
4.3.23.Limit test
With this program it is possible to make a mechanical test of the
rotating arm using a special projection:
(1)
all the movements are tested respect to the maximum
mechanical limit of each movement
(2)
all the movements are tested using the 93% of the maximum
torque of each motor.
The purpose is to verify if there are some mechanical problems
during the rotation and to verify that the motors are able to supply
the maximum torque.
The following message will appear on the display:
LIMIT TEST
Press DUMMY RUN to go
1)
Press the DUMMY RUN key on the keyboard
2)
the standard panoramic exposure program is entered
3)
select the program LIMIT EDGE PATH among the various
projections available (child, orthogonal dentition, etc) by
pressing the keys S13 or S14 (projection - or projection +)
on the operator panel
4)
press the RESET key on the keyboard
5)
press dummy run to run the limit test projection
6)
switch off the system to leave the service program.
F-24
ORTHORALIX 9200
4.3.24. Vf tube editing
With this program you can modify the parameters for the tube
calibration stored in the EEPROM.
This may be necessary if, for any reason, you have to reset the
EEPROM (see Default EEPROM service program) or replace the
host computer board PC1 and it is not possible to use the old EEPROM
D38 on the new board.
If the System Configuration Module (see Section C) is not available,
perform the tube calibration using the Tube calibration service
program (in this case the parameters are automatically stored in the
EEPROM at the end of the procedure following the Adjusting the
tube current procedure explained in this section of the Service
Manual).
Three parameters can be modified: one is related to a tube current
of 4 mA, one to 9 mA and the last one to 14 mA.
The following message will appear on the display:
Press DUMMY RUN to go
1)
Press the DUMMY RUN key on the keyboard
2)
three values will appear on the display:
where:
XX is the value referred to 4 mA: it could be changed by
pressing the kV+ / kV- keys on the operator panel
YY is the value referred to 9 mA: it could be changed by
pressing the mA+ / mA- keys on the operator panel
ZZ is the value referred to 14 mA: it could be changed by
pressing the s+ / s- keys on the operator panel
3)
enter the parameters obtained with the Tube calibration
service program
4)
press the DUMMY RUN key to store the new parameters
and to exit the service program.
4.3.25.Tube calibration
With this service program you can perform the tube calibration by
making three exposures with 70 kV, lasting 500 ms and with 4, 9
and 14 mA.
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The following message will appear on the display:
Press DUMMY RUN to go
1)
Press the DUMMY RUN key on the keyboard
2)
the following will appear on the display:
3)
make an exposure, then the following will appear:
(03.0)E
Service Manual
Vf TUBE EDITING
XX
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TUBE CALIBRATION
70 kV
4 mA
0.5 s
70 kV
9 mA
0.5 s
DENTSPLY Gendex
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