Panasonic KX-FLB758RU Service Manual page 186

KX-FLB758RU
7.9.2. DOCUMENT SENSOR...."CHECK DOCUMENT" AND PAPER FEED
SENSOR...."REMOVE DOCUMENT"
These Sensors detect whether or not a document is in place. When a document is detected, the shelter plate let the sensor light
pass through, the photo-transistor turns ON, and the input signal of IC610-118pin /IC610-119pin becomes a low level.
When there is no document, the shelter plate shuts off the sensor light, the photo-transistor turns OFF, and the input signal of
IC610-118pin /IC610-119pin becomes a high level.
Document Sensor
Paper Feed Sensor
Phototransistor
No Document
Document Set
Phototransistor
No Read Position
Read Position
Signal(IC610 - 118pin)
OFF High level
ON Low level
Signal(IC610 - 119pin)
OFF High level
ON Low level
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