Panasonic KX-FC255CX-S Service Manual page 26

KX-FC255CX-S
6.5.3. Paper Top Sensor (SW1001)
When the recording paper is loaded on the print head or the recording paper cover is opened, the paper top sensor SW turns ON,
and the input signal of IC10-43 pin (Digital Board) becomes a low level. Usually, the SW turns OFF, and the input signal of IC10-43
pin (Digital Board) becomes a high level.
Set recording paper or paper cover is opened
No recording paper or paper cover is closed
6.5.4. Cover Open Sensor (SW1001)
When the u-TURN BLOCK is closed, the SW becomes ON, and the input signal of IC10-45 pin (Digital Board) becomes a low level.
When the cover is opened, the SW becomes OFF, and the input signal of IC10-45 (Digital Board) pin becomes a high level.
Cover is opened
Cover is closed
SW Signal (IC10-43 pin)
ON
OFF
SW Signal (IC10-45 pin)
OFF High level
ON Low level
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Low level
High level