Duplo 4000 - Error 4 Lamp

Hello
My duplo 4000 error 4 lamp lights on. Based on the manual book it says that error 4 lamp is not used. What does this mean? Can i turn it off?

 

Does it cause a problem? I was told it's when the detector couldn't read the sheet correctly. No you can't shut them off.

 

Yes, the machine won't work.
okay i'll try to check the detector of the sheet. what do you do when your detector couldn't read the sheet correctly?
thankyou for input

 

Go into options all the way to the end. See detection? Shut off that bin. See what happens. Or take out the sensor and switch with another bin. Does problem follow??