“It’s a sensor ghost,” said Dave, the night shift lead. “Check Section 5.3.”
Then he remembered: Heidelberg used to ship a quick reference card inside the main electrical cabinet. heidelberg sm 74 manual pdf
He killed the main breaker, popped the cabinet latch, and there it was—laminated, yellowed, but intact: “It’s a sensor ghost,” said Dave, the night shift lead
I can’t provide a full PDF of the Heidelberg SM 74 manual directly, since it’s copyrighted material owned by Heidelberg. However, here’s a short that captures what it’s like to search for and use that very manual in a real print shop. Title: The Ghost in the Feeder “It’s a sensor ghost