2K8
2-2-4
(2) Switches and sensors
Figure 2-2-2 Switches and sensors
1. Power switch................................................ Turns ON/OFF the AC power source.
2. Interlock switch ............................................ Shuts off 24 V DC power line when the top cover and front cover are
opened.
3. Left cover switch .......................................... Shuts off 24 V DC power line when the left cover is opened.
4. Cassette size switch .................................... Detects the paper size dial setting of the paper setting dial.
5. Paper sensor 1............................................. Detects the presence of paper in the cassette.
6. Paper sensor 2............................................. Detects the presence of paper in the cassette.
7. Lift limit sensor ............................................. Detects activation of upper limit of the bottom plate in the cassette.
8. Registration sensor ...................................... Detects the timing of primary paper feed.
9. MP tray sensor............................................. Detects the presence of paper on the MP tray.
10. Duplex conveying sensor............................. Detects paper jam in the duplex section.
11. Paper exit sensor ......................................... Detects paper jam in the fuser/paper exit section.
12. Paper full sensor .......................................... Detects the paper full in the top tray.
13. Toner sensor M ............................................ Detects the toner density in the developing unit M.
14. Toner sensor C............................................. Detects the toner density in the developing unit C.
15. Toner sensor Y............................................. Detects the toner density in the developing unit Y.
16. Toner sensor K............................................. Detects the toner density in the developing unit K.
17. Right ID sensor ............................................ Measures image density for color calibration.
18. Left ID sensor............................................... Measures image density for color calibration.
19. Waste toner full sensor ................................ Detects the waste toner box being full.
20. Envelope switch ........................................... Detects the envelope mode setting.
Machine inside
Machine left
Machine right
21
3
19
1
4
56 7
12
11
22
2
10
8
9
16
17,18
151413
20
23