We have some continuous feed dot matrix printers for churning out insurance claims. The kind with the ribbon cable the is connected to the print head.
^^Ribbon cables and print heads.
Today the user of one of these printers called me to say her printer was freaking out. Lights blinking crazy, print head jittering back and forth. I went down there, had a look, and found that she had stapled the ribbon cable to the fabric or nylon guide thing that rides next to the cable. It seems she didn't like that the cable and guide were starting to separate. Tape apparently did not work, so she moved on to staples.
Pulled out the staples, and magically, the printer works again.
Sigh.