A professional who tests and repairs cash registers, using handtools, power tools, and circuit test meters. Responsibilities include:

• Examines mechanical assemblies, such as printing mechanisms, counters, and keyboards, for worn or damaged parts, using precision gauges.
• Replaces defective parts, or reshapes parts on bench lathe or grinder.
• Tests electrical control units, wiring, and motors, using circuit test equipment.
• Replaces defective electrical parts, using handtools and welding and soldering equipment.
• Cleans and oils moving parts.
• May service adding machines.