Lexmark T652 Service Manual - Page 288
Lexmark T652 Manual
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4062-XXX Electrical components and controller Main cooling fan LVPS card assembly System card assembly Duplex cooling fan Print cartridge cooling fan HVPS card assembly Switch (printer front door interlock) The switch is a safety switch to cut off a 24 VDC power supply from the LVPS card assembly to the high volt power 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 fan The main cooling fan discharges air from the printer to prevent excessive temperature increase. Print cartridge cooling fan The print cartridge cooling fan discharges air from the print cartridge area to prevent excessive temperature increase. Duplex cooling fan The Duplex cooling fan discharges air from the duplex drive motor area to prevent excessive temperature increase. LVPS card assembly The LVPS card assembly generates low voltages 5V for logic circuits, 5 V for laser diodes and 24V for cooling fans. The LVPS is switchable and can be switched to work with 100V, 110 and 220V machines. HVPS card assembly The HVPS card assembly generates AC power and feeds it to the developer roll, the transfer roll assembly and the charge roll assembly. 3-76 Service Manual