Photo-transistor Signal (IC101-9 pin)
Document Set OFF High level
No Document ON Low level
7.9.2. PAPER FEED SENSOR....”REMOVE DOCUMENT”
The Sensor detects the front edge of the document.
When a document is detected, the shelter plate shuts off the sensor light, the photo-transistor
turns OFF, and the input signal of IC101-9 pin becomes a high level. When there is no
document, the shelter plate let the sensor light pass through, the photo-transistor turns ON, and
the input signal of IC101-9 pin becomes a low level.
Switch Signal (IC101-9 pin)
Read Position OFF High level
Non Read Position ON Low level
7.9.3. HOOK SWITCH
When the handset is raised, the switch is turned ON, and the signal at pin 57 of IC606 is low.
When the handset is returned, the switch is turned OFF, and the signal at pin 57 of IC606 is high.
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