Marco didn’t answer. Because the manual wasn’t just instructions. It was a confession.
He checked his own LOTO. Padlock on the main disconnect. Personal danger tag. Yes. He was safe. But his mind wasn't. fanuc robot r-2000ia 165f manual
The manual described the process: mechanical alignment of J1 to J6 using the alignment marks (tiny etched lines on the castings), then a “Zero Position Master” via the teach pendant. Simple. Boring. Except. Marco didn’t answer
The Gospel of Iron
Buried in subsection 12.4.3 was a paragraph no one quoted: “The R-2000iA/165F’s J4 axis (wrist rotation) utilizes a dual-harmonic drive with preloaded cross-roller bearing. Due to the 165kg rating, the drive will develop micro-slack after 25,000 hours of operation. Fanuc recommends ‘predictive backlash mapping’—a process requiring manual rotation of the wrist under 40% counter-torque and measurement with a dial indicator accurate to 0.01mm.” He looked at Unit 7’s service log. Operating hours: 27,400. The wrist had never been mapped. He checked his own LOTO