LG 14HK701G-W Owner's Manual page 87

Problem
When some areas appear abnormal in the •
acquired [Validation] image
1
- Go to the [Calibration] menu > [BPM Analysis] on the left bottom corner and check if [Rows] and [Columns], [Class] 5 ~ [Class] 8 have more than dozens of values. If so,
1) Adjust the X-ray generator's position so that the detector is within the X-ray irradiation range before running a [Calibration].
2) Keep the distance at least 120 cm between the detector and the X-ray generator tube.
3) If the distance cannot be more than 120 cm in Step 2), change the detector settings as follows before proceeding with the [Calibration].
•
4) Go to the [Calibration] menu and acquire Dark Image and Bright Image to run a [Calibration]. If the [BPM Analysis] result is not improved, repeat Step 3).
2
- Check if the problematic area is within the X-Ray irradiation range.
- Check if foreign matters or other objects are on the detector.
3
- Run a [Calibration] again to create a new Calibration result, and, with the result, acquire [Validation] images.
- It the problem persists even after the new Calibration, set the pixel as a bad pixel in the [User BPM] and go to [History] > [Open] on the top right corner to load the
When acquiring images in the [Validation] after creating the [Calibration] result file in the Calibration menu, an abnormal image may be acquired. Check the issues
below and follow the guide.
When some areas appear in black or light bleeding occurs in the acquired image
follow the steps below to run a new [Calibration] and acquire [Validation] images.
Go to > [Calibration SW] and enter a value 0.05-0.1 higher than the existing value for [Gain] and [Save].
Go to > [Calibration SW] and enter a value 1.5-2 times greater than the existing value for [Offset] and [Save].
NOTE
Due to the heel effect of the X-ray generator, if the distance is short, less X-ray irradiation may be applied to the edge of the detector. This difference makes it necessary
to adjust the [Gain] and [Offset] values. The [Gain] adjustment is a required process, but the [Offset] adjustment may be skipped depending on the situation.
When some areas appear in black in the form of the straight or curved line
When white or black pixels appear in the image
newly created calibration result and perform a [Validation] again.
Solution
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