Motors and fans The product has four motors and four fan motors. The motors are used for the media feeding and image formation. The fan motors are used for preventing a temperature rise inside the product. Table 1-3 Fans Description Cooling area Type Speed Cooling fan FN101 Cartridge area and power supply area Intake Full/Half 1 Cooling fan FN102 Cartridge area Intake Full 2 Cooling fan FN103 Cartridge area Intake Full 2 Cooling fan FN301 Cartridge area and laser/scanner Intake Full 2 1 Cooling fan FN101 rotates at full speed for eight seconds when the product is turned on, and then decreases to half-speed for approximately 10 minutes.
After that time period, if there is no print job in the print queue, the fan will stop completely. The fan rotates at full speed during a print job. 2 This fan operates at full speed only during a print job. Otherwise, it does not rotate.
Table 1-4 Motors Description Driving parts Type Failure detection Paper feed motor (M101) Drives the Tray 1 pickup roller, Tray 2 pickup roller, and feed roller DC Yes Drum motor (M102) Drives the photosensitive drum, primary charging roller, and transfer roller DC Yes Fuser motor (M299) Drives the pressure roller and feed roller—when rotated counterclockwise it releases the fusing pressure for easier jam removal DC Yes Lifter motor (M103) Drives the lifting plate of the tray DC No Failure detection Motor failure The DC controller determines a motor failure and notifies the formatter when it encounters the following conditions: ● Motor start-up failure :
The motor does not reach a specified speed within a specified period from when each motor starts up. ● Motor rotational failure : The rotational speed of the motor is out of a specified range for a specified period from when it once reaches a specified speed. Fan motor failure The DC controller determines a fan motor failure and notifies the formatter when the fan locks for a specified period from when each fan starts up. 14 Chapter 1 Theory of operation ENWW