Panasonic KX-MB2061CXB Service Manual page 61

6.14.3. Exit Sensor
This sensor detects whether the recording paper exits or not.
When there is a recording paper at the position of the sensor, the input signal of IC300-AD20pin becomes low level.
When there is no recording paper at the position of the sensor, the input signal of IC300-AD20pin becomes high level.
6.14.4. Home Sensor
This sensor detects whether the carriage is at its home position or not.
When the carriage is at its home position, a shelter plate closes the sensor light.
So the photo-transistor turns off and the input signal of IC300-V23pin becomes high level.
When the carriage is not at its home position, a shelter plate lets the sensor light pass.
So the photo-transistor turns on and the input signal of IC300-V23pin becomes low level.
A paper exists
No papers
Photo-transistor
A carriage is at home OFF
A carriage is not at home ON
Signal (IC300-AD20pin)
Low level
High level
Signal (IC300-V23pin)
High level
Low level
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KX-MB2061CXB/KX-MB2061CX2/KX-MB2062CXB