If the sample is inserted before the system is switched on, the แผ่นวางตัวอย่าง's reference run may result in a collision with the sample, damaging system components or the sample.
Do not insert sample when system is off; only insert once the แผ่นวางตัวอย่าง has completed its reference run.
In "Stand By" position, they system is still on, but unable to generate X-rays.
In the "Off" position, all components are switched off.
The key can only be removed when the key-operated switch is in the "Off" or "Stand By" position.