Mgi dp60 pro digital press - please close front door

My company just bought a used Mgi dp60 pro digital press which has make 1.2m impressions and had it installed. But the press's touch screen has the message "Please close front door" even though the door is closed.
I have not used an Mgi printing machine before. I cannot figure out how to solve this issue.

Can anyone help me out with this problem. Where the door switch and the sensor is and how to solve it.

Your response will be very much appreciated and thanks in advance.

 

Not sure if you solved the problem. The DP60 engine is actually a KM 6500C

 

Yes. This was solved. It was rather the emergency stop button which was engaged. We just had another issue. The Pilote screen toner error and the main engine shows paper jam whereas there are no paper. Jam code j-3252. Any help?