Document Size Detection Mechanism; Raised/Lowered Position Detection Mechanism - Konica Minolta DF-502 Service Manual

Theory of Operation Ver. 1.0 Apr. 2005
2.6

Document Size Detection Mechanism

• The document size is determined by means of two different systems of document width
detection and document length detection.
✽ Document Width Detection
• The width of an original is detected by the combination of Paper Width Sensors as
detected while the original is being taken up.
• Each sensor is located as follows with reference to the Document Edge Guide in the rear.
✽ Document Length Detection
• The length of the original is detected by the Paper Length Sensor when the document is
loaded in the unit.
• The Paper Length Sensor is located at the Document Loading Tray.
2.7

Raised/Lowered Position Detection Mechanism

• There is a magnet installed in the ADF body to allow the copier to know that the ADF is
raised or lowered.
• This magnet actuates the Size Reset Switch on the copier.
Size Reset Switch (S5)
2. Automatic Document Feeder (DF-502)
Magnet
4034M521AA
9