Comment by hazeii

Pretty much my first on-site service job: the company I was working for made motion-control systems for animation, controlled by a PDP-11. The customer was an animation studio, so dead in the water without the system working. Problem was it wasn't booting, so I had to go on site, open the side of the cabinet and reposition the goose-neck lamp used as the light source for the paper-tape reader. Problem solved, happy customer.