Panasonic KX-FT71LA-B Service Manual page 144

Analog
Board
Signal (CN1-9
Paper Low level
No paper High level
5.5.3. READ POSITION (PS2)
When a document is brought to the read position, the shelter plate passes the sensor light, the
photo transistor becomes ON, and the input signal of the CN2-5 pin (Operation) becomes a low
level. When there is no document at the read position, the shelter plate closes the sensor light,
the photo transistor becomes OFF, and the input signal of the CN2-5 pin (Operation) becomes a
high level. (When checking this sensor, CN1-8 pin, 2pin becomes low level).
Pin)
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