Exit Sensor; Document Sensor - Panasonic DP-MB310EU Service Manual

KX-MB2230EU/ KX-MB2270EU/ KX-MB2515EU/ KX-MB2545EU/ KX-MB2575EU/ DP-MB310EU

6.12.5. Exit Sensor

This sensor detects whether a recording paper exits or not.
When there is a recording paper at the position of the sensor, the input signal of IC300-AF23pin becomes low level.
When there is no recording paper at the position of the sensor, the input signal of IC300-AF23pin becomes high level.

6.12.6. Document Sensor

This sensor detects whether a document is set in ADF or not.
When a document is set in ADF, the shelter plate lets the sensor light pass.
So the photo-transistor turns on, and input signal of IC300-AC26pin becomes low level.
When a document is not set in ADF, the shelter plate closes the sensor light.
So the photo-transistor turns off, and input signal of IC300-AC26pin becomes high level.
This sensor LED is controlled by IC300-M26pin.
No papers
A paper exists
Document exists
No document
LED control
Sleep
Standby
80
Signal (IC300-AF23pin)
High level
Low level
Signal (IC300-AC26pin)
Low level
High level
Signal (IC300-M26pin)
50% duty
High