2JN
2-2-3
(2) Switches and sensors
Figure 2-2-2 Switches and sensors
1. Main power switch ....................................... Turns ON/OFF the AC power source.
2. Interlock switch ............................................ Shuts off 24 V DC power line when the front cover is opened.
3. Cassette switch............................................ Detects open/close cassette.
4. Registration sensor ...................................... Detects the timing of primary paper feed.
5. Paper sensor................................................ Detects the presence of paper in the cassette.
6. MP paper sensor.......................................... Detects the presence of paper on the MP tray.
7. Exit sensor ................................................... Detects paper jam in the fuser or duplex conveying section.
8. Home position sensor .................................. Detects the ISU in the home position.
9. Toner sensor ................................................ Detects the quantity of toner in a toner container.
10. Waste toner sensor...................................... Detects when the waste toner reservoir (Drum unit) is full.
11. Fuser thermistor........................................... Measures the heat roller temperature.
12. Fuser thermal cutout .................................... Shuts off the power source to the fuser heater lamp when the heat roller
reaches extremely high temperature.
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