These opinions are my own, and my only connection with any bank is as a customer. The ATMs around Atlanta always give you a receipt, whether or not your request went through. Usually they have a code on the front, with a list of codes and what they mean on the back. As for the printer breaking or running out of paper, it's not a hard thing for an ATM to detect the lack of paper flow and put itself out of service. Whether or not ATMs do that is yet another question.
ATMs keep an internal printout of account numbers, as an audit trail.
We didn't know what had happened until checks started bouncing on us. Specifically, the test UH-60 experienced a simultaneous loss of hydraulic pressure to both tail rotor servos for approximately 5 sec. and a jamming of the tail rotor control pedals. Both malfunctions were attributed to the susceptibility of the hydraulic logic module to the high energy levels. And, so is the escape character for Berkeley mail. Fortunately, UNIX seems to ignore the switch.