CIRCUIT OPERATIONS
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KX-FT21LA
[Motor Position Sensor]
This sensor is a detection switch for recording the position of the CAM.
+5V
R77
R78
C78
IC1
174
1
2
CN5
SW3
Signal (IC1-174 Pin)
Home position Low level
Other High level
Digital Board
[Recording Paper Sensor (SW1) ]
When there is no recording paper, the plate is separated from the switch lever and the switch turns off.
Pin 9 of CN1 (Analog board) becomes a high level.
When there is recording paper, the plate pushes the switch lever and the switch turns ON.
Pin 9 of CN1 (Analog board) becomes a low level.
PLATE
+5V
R3
R1
C1
SW1
9
CN1
Signal (CN1-9 Pin)
Paper Low level
No paper High level
Analog Board
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