Kyocera FS-2020D Service Manual page 120

2J0/2J1/2J2-4
13. Power source unit ........................................ Generates 24 V DC and 5 V DC power source. Controls the fuser heater
14. Power switch................................................ Turns ON/OFF the AC power source.
15. Interlock switch ............................................ Shuts off 24 V DC power line when the top cover is opened.
16. Cassette size switch .................................... Detects the paper size dial setting of the paper setting dial.
17. Fuser unit switch .......................................... Detects open/close rear unit (fuser unit).
18. Envelope switch-R ....................................... Detects the position of the envelope switch (right).
19. Envelope switch-L........................................ Detects the position of the envelope switch (left).
20. Envelope feeder detection switch*
21. Registration sensor ...................................... Detects the timing of primary feeding.
22. Paper gauge sensor 1.................................. Detects the paper remaining amount level.
23. Paper gauge sensor 2.................................. Detects the paper remaining amount level.
24. Duplex jam sensor ....................................... Detects paper jam in the duplex conveying section.
25. MP tray paper feed sensor........................... Detects paper on the MP tray.
26. Face down tray paper full sensor ................. Detects whether the face down tray is full.
27. Paper exit sensor ......................................... Detects paper jam in the fuser unit.
2
28. Duplex sensor* ........................................... Detects paper jam in the rear unit.
29. Temperature/humidity sensor....................... Detects the ambient temperature and absolute humidity.
2
30. Lift sensor* ................................................. Detects activation of upper limit of the bottom plate in the paper cassette.
31. Toner sensor ................................................ Detects the toner in the toner container.
32. Fuser thermistor 1........................................ Measures the heat roller temperature.
2
33. Fuser thermistor 2*
34. Thermal cutout ............................................. Shuts off the power source to the fuser heater lamp when the heat roller
35. Main motor ................................................... Drives the paper feed/conveying section and fuser unit.
36. Drum motor .................................................. Drives the drum unit and developing unit.
37. Toner motor.................................................. Replenishes the developing unit with toner.
38. Switchback motor......................................... Drives paper exit (switchback) section.
2
39. Lift motor* ................................................... Operates the bottom plate in the paper cassette.
40. Polygon motor.............................................. Drives the polygon mirror.
41. Right fan motor ............................................ Cools the interior of machine.
42. Left fan motor ............................................... Cools the interior of machine.
43. PSU fan motor ............................................. Cools the power source unit.
44. Feed fan motor............................................. Cools the paper feed conveying section and duplex conveying section.
45. Exit fan motor............................................... Disperses steam.
46. Registration clutch ....................................... Controls the secondary paper feed.
47. Paper feed clutch ......................................... Controls the paper cassette paper feed.
48. Middle feed clutch ........................................ Controls the paper conveying at the conveying section.
2
49. Duplex clutch* ............................................ Controls the paper conveying at the duplex conveying section.
50. Developer solenoid ...................................... Controls the developing unit drive.
51. MP tray paper feed solenoid ........................ Controls the primary paper feed from the MP tray.
52. Face up/down solenoid*
53. Fuser heater lamp........................................ Heats the heat roller.
54. AC inlet ........................................................ Connects the AC power source.
1
* : 45/47 ppm printer (EUR/USA model) only
2
* : 40/42 and 45/47 ppm printers (EUR/USA model) only
2-2-4
lamp.
2
............. Detects optional envelope feeder.
..................................... Measures the heat roller (center) temperature.
reaches extremely high temperature.
2
............................. Switches the output stack between face up and face down.