Heidelberg Speedmaster SM74 (95 year)

Hello everybody.
Can somebody help me!
Yesterday on the screen appear some kind of error and I can't find anything about this.

In picture shown how it looks like! On impresion cilinder appear red rectangular.

Please see picture below.


Thank you very much before!

 

Dear Si:
Hi Good day hope you are well
After analizing the Pic:
1) Your machine has perfector right? a) Fault symbol:
Monitoring interaction
reversing drum/storage drum” b)Fault symbol ”Door sheet turning device”
Test that 2 options.
Let me know.