Sirona ORTHOPHOS XG 3 DS, Service Manual

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59 38 399 D3352
D3352.076.01.13.02
07.2008
4 – 15
Tab 4 4.3 Adjusting the panoramic X-ray unit
4.
3
Coarse or precision adjustment? Sensor adjustment can usually be performed directly via precision adjust-
ment. Only in exceptional cases, e.g. if one or several needles are completely
outside of the image field
C in an image acquired with the
PRECISION
ADJUSTMENT
presetting, is it necessary to perform a coarse adjustment prior
to precision adjustment D . To do this, deactivate the
PRECISION ADJUST
-
MENT
check box (see page 4-3) and then perform a coarse adjustment pro-
ceeding in the same way as for precision adjustment. The only difference
between coarse and precision adjustment is the size of the image area con-
sidered. Furthermore, there are fewer auxiliary lines in the coarse adjustment
mode.
X-ray image with unadjusted pan sensor:
Alternatively with precision adjustment setting (C) and coarse adjustment setting (D)
On the X-ray image with coarse adjustment (D), the center pin is just barely
visible on the left margin of the image field in the middle. Even in this extreme
case, an adjustment would still be possible.
NOTE
i
With SIDEXIS SW V01.45 and higher, a message window indicates whether a
coarse adjustment is required on completion of the precision exposure.
C D