A machine repair service does what seems basic to many people-repair electrical appliances. Every now and then, however, it is a superb idea to examine the ordinary and look at exactly what a repair service exists to do. To the end, the language "appliance," "repair," and "service" will all serve valued roles in defining an equipment repair service.

Just before defining a product repair service, someone must first understand how to define the term "appliance." A machine is a device…