These include central processing units, video display terminals, printers, and disk or tape drives. Some specialize in keeping up certain types of microcomputers or word processing systems. Some are called service technicians, field engineers, or customer service engineers. Their title depends on whether they work out in the field or in manufacturing plants. Computer equipment repairers may install, program, use, and fix computers.
Routine service includes cleaning and oiling mechanical parts and checking electronic equipment.
They diagnose problems caused by mechanical or electrical failure. Those problems may be in individual computers and in local area networks. When computers fail, technicians must find the cause. Then they must replace or repair the broken parts. Computer maintenance technicians often answer questions and give technical advice.