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KX-F910BX
CIRCUIT OPERATION
Phototransistor
Signal (IC301-15 Pin)
No document
ON
Low level
Set document
OFF
High level
Analog, Digital and Operation Board
[Document Sensor (PI302)]
When a document is set, the shelter plate shuts the sensor ligh, the phototransist or becomes OFF, and the input signal
of IC301-15 pin (Operation) becomes high level. When there is no document, the shelter plate passes the sensor light, the
phototransistor becomes ON, and the input signal of IC301-15 pin (Operation) becomes low level.
(When checking this sensor condition, IC301-9 pin becomes low level.)
+5V
+5V
R333
R332
15
9
IC301
XLD12
LED10
SHELTER PLATE
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