missing intermediate roller #17 icon in one body (#6). SM 74-6 (1999)

[Halfmoon23]

A few days ago the operator of a Heidelberg SM 74-6 from 1999 told me that a button disappeared from the panel, I imagine it could be activated and deactivated somewhere in the menu but I don't know where. Could you tell me where I can activate it again?

 

[junker1984]

That would typically mean that the directional control valve solenoid has failed the plausibility test on INIT, whether that is from failure of the solenoid or simply a bad connection in the circuit path.

 

[Adil]

A good answer from junker , try to test with another solenoid valve ,