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Section F
4.3.28. AEC Pan tune
With this service program is possible to insert/modify the parameter
used for the calibration of the panoramic AEC sensor and casset-
te/screens. This parameter is obtained using the service program
AEC slope.
The panoramic AEC sensor and cassette are already calibrated in
factory, so the calibration parameter is already stored:
please record this calibration parameter in the Configuration Chart
of the Section C of this Service Manual.
This calibration parameter is also written on a label glued on the
rear of the PA5 board, where the following information are present:
S/N
is the S/N of the PA5 board
Cassette
is the cassette and screens used for the calibration
(they are the ones delivered with the system)
C
is the calibration parameter for the AEC
Date
date of the calibration
The following message will appear on the display:
AEC PAN TUNE
NEW=XX OLD=ZZ
where:
XX
= is the actual calibration parameter
ZZ
= is the old calibration parameter
To modify the calibration parameter, use the Progam +/Program -
keys on the keyboard (possible range from -200 to +50) and press
DUMMY RUN key on the keyboard to store the new parameter and
to exit from the program.
If the service programs Default EEPROM or Reset EEPROM are
used, this calibration parameter is reset to 0.
4.3.29. AEC Ceph tune
With this service program is possible to insert/modify the parameter
used for the calibration of the ceph AEC sensor and cassette/
screens. This parameter is obtained using the service program
AEC slope.
The ceph AEC sensor and cassette are already calibrated in factory,
but the calibration parameter must be stored using this program;
please record this calibration parameter also in the Configuration
Chart of the Section C of this Service Manual.
The calibration parameter is written on a label glued on the ceph
lead plate, placed on the rear side of the of the ceph cassette
carriage, where the following information are present:
S/N
is the S/N of the PA5 board
Cassette
is the cassette and screens used for the calibration
(they are the ones delivered with the ceph arm)
C
is the calibration parameter for the AEC
Date
date of the calibration
The following message will appear on the display:
AEC CEPH TUNE
NEW=XX OLD=ZZ
where:
XX
= is the actual calibration parameter
ZZ
= is the old calibration parameter
To modify the calibration parameter, use the Progam +/Program -
keys on the keyboard (possible range from -200 to +50) and press
DUMMY RUN key on the keyboard to store the new parameter and
to exit from the program.
If the service programs Default EEPROM or Reset EEPROM are
used, this calibration parameter is reset to 0.
F-26
ORTHORALIX 9200
4.3.30.AEC Slope
With this service program is possible to obtain the calibration
values for the AEC sensor mounted on the PA5 board, both
panoramic and ceph.
The calibration must be done without and with the cassette.
For more details see the paragraph AEC calibration in this
section of the Service Manual.
The sequence of the messages that appear on the display is the
following:
1)
Press the DUMMY RUN key on the keyboard
2)
the following message appear on the display
3)
press the RESET key on the keyboard
4)
make an exposure, then the following will appear:
5)
make an exposure, then the following will appear:
these parameters are used to calculate the correction values for
the AEC calibration: for more details see the paragraph AEC
calibration in this section of the Service Manual.
6) switch off the system to leave the service program.
4.3.31.Default EEPROM
With this service program you can reset the information held in the
EEPROM (correction of X-Y-R-C movements, tube calibration, X-
ray enable, 80kV limit, AEC calibration, DPI configuration) to the
default condition.
The exposure counter, the customized exposure parameters and
the language of the messages will not be reset.
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Service Manual
AEC SLOPE
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