Failing to engage to straight mode, Heidelberg SM74, stuck in perfecting mode after changing of pins

Press accidentally turned into perfecting mode after changing pins and failing to return to straight mode, 2 days now, please help

 

Hi sir:
Do this:
1)The claw does not swing
down to engage with the bolt.
2) Abort the command.
3)Repeat the changeover or
sheet-length change.
4)Check the pneumatic valve/
pneumatic connections.
5) Check the electrical connections
to the pneumatic valve

 

Which pins are you talking about? You need to give a lot more details about your problem if you want help over a forum. Is it a semi or fully auto perfector and what error is showing up on your screen?

 

Please do the next:
1)The claw does not swing
down to engage with the bolt.
2) Abort the command.
3)Repeat the changeover or
sheet-length change.
4)Check the pneumatic valve/
pneumatic connections.
5) Check the electrical connections
to the pneumatic valve