Epson DFX-5000+ Service Manual page 80

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Operating Principles
Each sensor is described below.
1. Front and rear paper end sensors
2. Top paper end sensor (to detect the TOF position)
2-28
Figure 2-21. Sensor Circuit Block Diagram
Open collector (pulled up to 10 KR resistance)
CR filter circuit (10 KR and 39 pF)
Paper present: LOW
Paper out: HIGH
Open collector
CR filter circuit (10 KR and 39 pF)
Paper present: LOW
Paper out: HIGH
EPSON DFX-5000+ Service Manual

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