Panasonic KX-FL612CX Service Manual page 178

KX-FL612CX / KX-FL612CX-S
7.11.6. REGIST SENSOR
The Sensor detects whether or not the recording paper is present so that printing can start.
When the recording paper is detected, the shelter plate let the sensor light passing through, the photo-transistor turns ON, and the
input signal of IC605-5pin becomes a low level.
When there is no recording paper, the shelter plate closes the sensor light, the photo-transistor turns OFF, and the input signal of
IC605-5pin becomes a high level.
No Recording Paper
Recording Paper Regist
Photo-transistor Signal (IC605-5 pin)
OFF
ON
178
High level
Low level