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5.5.4. JAM SENSOR (SW3)
The JAM sensor is a detection switch for determining whether the recording paper edge is in the correct position or not. If the
recording paper cannot be detected correctly at the JAM sensor position even when recording paper is present, then JAM is
displayed. If the recording paper is at the sensor position, then the switch turns on the CN1-11pin (Analog) switches to a high level.
recording paper cannot be detected correctly at the JAM sensor position even when recording paper is present, then JAM is
displayed. If the recording paper is at the sensor position, then the switch turns on the CN1-11pin (Analog) switches to a high level.
Analog Board
Signal (CN1-11 Pin)
Paper
Low level
No paper
High level
5.5.5. DOCUMENT TOP SW (SW32)
When a document is brought to the read position, the SW becomes ON, and the input signal of IC1-21pin (Operation) becomes
a low level. When there is no document at the read position, the SW becomes OFF, and the input signal of IC1-21 pin (Operation)
becomes a high level.
a low level. When there is no document at the read position, the SW becomes OFF, and the input signal of IC1-21 pin (Operation)
becomes a high level.
Operation Board
Signal (IC1-21 pin)
Out of the Read Position
High level
At the Read Position
Low level
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KX-FT78RU-B / KX-FT78RU-W
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