Panasonic KX-FT982LS-B Service Manual page 30

KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B
6.5.6. Document Top Sensor (SW338)
When a document is brought to the read position, the SW becomes ON, and the input signal of IC301-5 pin (Operation Board)
becomes a low level. When there is no document at the read position, the SW becomes OFF, and the input signal of IC301-5 pin
(Operation Board) becomes a high level.
Out of the Read Position
At the Read Position
6.5.7. Document Set Sensor (SW339)
When a document is set, the SW becomes ON, and input signal of IC301-6 pin (Operation Board) becomes a low level.
When there is no document, the SW becomes OFF, and the input signal of IC301-6 pin (Operation Board) becomes a high level.
No document
Set document
Sensor SW Signal (IC301-5 pin)
OFF
ON
Sensor SW Signal (IC301-6 pin)
OFF
ON
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High level
Low level
High level
Low level