Utax CA-3100, Service Manual

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3-10
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.
13
7
14
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
5