Test, diagnose, repair, and install fare-handling and other equipment electronic components such microprocessor logic boards, power supply and motor control boards, and other printed electronic circuit boards that control the operation of the equipment, identification computers, junction and isolation boxes, data probes, various receivers, mobile bins, vaults, microcomputers, and peripherals. Under general supervision and in accordance with established maintenance and repair procedures and with the opportunity for consultation with superior on department revenue security policies, but with responsibility for seeing that policies are observed, and for the quality of the work, installs, tests, maintains, and repairs electronically operated equipment.