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Machine Design > Electric parts
[CONFIDENTIAL]
(4) Sensors and Switches
(4-1)Layout
1 Paper sensor 1
Detects the presence of paper in the cassette.
2 Paper sensor 2
Detects the presence of paper in the cassette.
3 Cassette size switch
Detects the paper size dial setting of the paper setting dial.
4 Eject full sensor
Detects the paper full in the upper tray (Facedown).
5 Registration sensor 1 *2
Controls the secondary paper feed start timing.
6 Registration sensor 2 *1
Controls the secondary paper feed start timing.
7 Registration sensor 3 *1
Controls the Image data beginning timing.
8 Duplex sensor 1 *1
Detects a paper jam in the duplex section.
9 Duplex sensor 2
Detects a paper jam in the duplex section.
10 MP paper sensor
Detects the presence of paper on the MP tray.
11 Eject sensor
Detects a paper misfeed in the fuser or eject section.
12 Fuser pressure release sensor
Detects the change state of pressure in fuser unit.
13 Fuser thermistor 1
Detects the heat roller temperature at the edge position.
14 Fuser thermistor 2
Detects the heat roller temperature at the center position.
15 Toner sensor
Detects the amount of toner in the developer.
16 Lift sensor *1
Detects the top limit of the bottom plate.
17 Interlock switch
Shuts off 24 V DC power line when the top cover is opened.
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15
9
2
1
18
4
8
12
10
17
16
3
11
20
19
6
Drum unit
Fuser unit
Developer unit
High-voltage PWB
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