In most cases, if X-ray shows standby state, when we measure PXRD pattern of the sample, the X-ray automatically changes to on state and shows voltage and current value.

This time, when we started to measure sample on D8 Advance diffractometer, the shutter immediately opened and X-ray still showed stand by state and no voltage and current values show. If we press the stop button, it does not work.

What has happened, how can we solve this problem? 

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