AcuLaser M2000D/M2000DN/M2010D/M2010DN Revision B
OPERATING PRINCIPLES      Electrical parts layout 17
Confidential
SWITCHES AND SENSORS
Figure 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 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. Toner sensor 
Detects the quantity of toner in a toner container.
9. Fuser thermistor 
Measures the heat roller temperature.
10. Fuser thermal cutout 
Shuts off the power source to the fuser heater lamp when the heat roller reaches 
extremely high temperature.
Machine inside
Machine left
Machine right
1
9
10
2
4
5
8
6
3
7