Planmeca Proline EC ceph, Technical Manual

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Chapter E - DIMAX3 DIGITAL SYSTEM ADJUSTMENT
E-52 Planmeca Proline EC X-ray unit
CEPHALOSTAT ADJUSTMENT
Technical Manual
7.5 Calibrating the cephalostat sensor head
Remove the sensor alignment tool from the cephalostat quick connector mechanism and
attach the sensor head to the quick connector.
Remove the nasial positioner and the ear posts from their holders. Attach the cephalostat cal-
ibration tool to the right-hand ear post holder (near the sensor head).
Figure 92
Make sure that the second primary slot is in its position.
The calibration with 4x4 binning (normal resolution) is performed with mA value lower than 4
mA. Because of this, the mA range must be changed before calibration. Enter the service
mode as described in section “How to enter/exit the service mode” on page B-6.
Press the CTL-key and press and hold the mA+ -key for 4 seconds to change the mA range.
The ranges are
default
4-12 mA and
low
2-12 mA. The mA range is indicated in the mA dis-
play, 04 is for default mA range and 02 for low mA range. Use the low mA range when cali-
brating the cephalostat sensor head.
Exit the service mode.
CAUTION REMEMBER TO CHANGE THE mA RANGE BACK TO DEFAULT (4-12 mA) AFTER CALI-
BRATING THE CEPHALOSTAT SENSOR HEAD.
Press and hold the P key until you have heard two audible signals. The latest used exposure
mode number starts to flash on the main display.
Select the image area 6 with the program selection keys. The text CPH6 will appear on the
main display. The rotating unit will move automatically to the correct position for taking cepha-
lometric exposures.
Cephalostat
Nasial positioner
calibration tool
mA
hold for
4 seconds
CTL
P