3-60 Service ManualThe switch is a safety switch to cut off a 24 VDC power supply from the LVPS card assembly to the high voltpower supply (HVPS) card assembly, printer system card assembly and to the main drive motor assembly,while the printer front door assembly is open.Main cooling fanThe main cooling fan discharges air from the printer to prevent excessive temperature increase.Print cartridge cooling fanThe print cartridge cooling fan discharges air from the print cartridge area to prevent excessive temperatureincrease.Duplex cooling fanThe Duplex cooling fan discharges air from the duplex drive motor area to prevent excessive temperatureincrease.LVPS card assemblyThe LVPS card assembly generates low voltages 5V for logic circuits, 5 V for laser diodes and 24V for coolingfans. The LVPS is switchable and can be switched to work with 100V, 110 and 220V machines.LVPS cooling fanThe LVPS cooling fan discharges air from the LVPS to prevent excessive temperature increasesHVPS card assemblyThe HVPS card assembly generates AC power and feeds it to the developer roll, the transfer roll assembly andthe charge roll assembly.
