2M4/2M5/2M6/2M7
2-2-3
(2) Switches and sensors
Figure 2-2-2 Switches and sensors
1. Cover switch (CSW).............................. Shuts off 24 V DC power line when the front cover and rear cover
is opened.
2. Registration sensor (RS)....................... Detects the timing of paper conveying.
3. CIS sensor (CIS)................................... Reads the image of originals.
4. Home position sensor (HPS) ................ Detects the optical system in the home position.
5. Toner sensor (TS) ................................. Detects the quantity of toner in a toner container.
6. Motor count sensor (MCS).................... Detects revolution pulses of the motor.
7. Duplex sensor (DUS)*........................... Detects a paper misfeed in the duplex section.
8. Fuser thermistor (FTH) ......................... Measures the heat roller temperature.
9. Fuser thermostat (FTS)......................... Shuts off the power source to the fuser heater lamp when the heat
roller reaches extremely high temperature.
10. Outer temperature sensor (OTEMS)..... Detects the outside temperature and humidity.
11. Power switch (PSW) ............................. Turns ON/OFF the AC power source.
*: 3 in1 25/26 ppm model,4 in 1 20/21,25/26 ppm model only.
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Machine inside
Machine left
Machine right
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