For example, when an ATM dispenses cash, it also transmits the withdrawal information to the customer's bank. Workers may also install operating software and peripheral equipment, checking that all components are configured to correctly function together. The installation of personal computers and other small office machines is less complex and may be handled by the purchaser. When equipment breaks down, many repairers travel to customers' workplaces or other locations to make the necessary repairs. These workers, known as field technicians, often have assigned areas where they perform preventive maintenance on a regular basis.
Bench technicians work in repair shops located in stores, factories, or service centers.
In small companies, repairers may work in both repair shops and at customer locations. Computer repairers usually replace defective components, instead of repairing them. Replacement is common because components are inexpensive, and businesses are reluctant to shut down their computers for time-consuming repairs. Defective components may be given to bench technicians, who use software programs to diagnose the problem and who may repair the components, if possible. When ATMs malfunction, computer networks recognize the problem and alert repairers.