2002 Roland 705+LV NODE3-2

My Roland 705,this error message appears very often.It can be eliminated, after the error is eliminated, it will reappearand irregular.
But the powder spraying system can also work.
How to solve this. Please guide.
Best Regards

 

Is the error of counter

 

Revisa la fibra

 

The node is in the command.

 

Check the fiber?
Which fiber？
Regards

 

Check MAVO rack and communication cable with Technotrans.

 

send photo, of side A board

 

this one?

 

Dear Plz check A364 rack in delivery control panel

 

here?

 

Yes ,here top side

 

Could you point it out in this photo? Then how should I check it?
Regards

 

Above, left, 2 black plugs are for Technotrans and Puder.
There are 2 optocouplers in the connectors. Make speed issues.

 

Is it this two black plug?How should I test it?

 

You can interchange plugs andcheck whether error number changes.best of luck

 

Understood, thanks