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144
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KX-F910BX
Signal (IC151-33 Pin)
Close
Low level
Open
High level
Analog Board
[Cover Open Sensor (SW271)]
When the upper cabinet is closed, the plate push the switch lever, the input signal of IC151-33pin (ANALOG)
becomes low level. When there is opened, the plate leaves the switch lever, the input signal of IC151-33pin (ANALOG)
becomes high level.
[Read Position Sensor (PI301)]
When an document is brought to read position, the shelter plate pass the sensor light, the phototransistor becomes ON,
and the input signal of IC301-15pin (Operation) becomes low level. When there is no document at the read position, the
shelter plate shuts the sensor light, the phototransistor becomes OFF, and the input signal of IC301-15pin (Operation)
becomes high level. (When checking this sensor condition, IC301-16 pin becomes low level).
PLATE
+5V
R271
R272
C271
IC151
SW271
33
+5V
+5V
R333
R331
15
16
IC301
XLD12
LED11
SHELTER PLATE
Phototransistor
Signal (IC301-15 Pin)
Out of the Read Position
OFF
High level
At the Read Position
ON
Low level
Operation Board
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