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KX-F910BX
CIRCUIT OPERATION
4-5. SENSORS AND SWITCHES
[Recording Paper Sensor (SW273)]
When recording paper is present, the plate push the switch lever, the input signal of IC151-6 pin (ANALOG) becomes Iow
level. When the set runs out of recording paper, the plate leaves the switch lever, the input signal of IC151-6 pin (ANALOG)
becomes high level.
Signal (IC151-6 Pin)
Set Recording Paper
Low level
No recording Paper
High level
Analog Board
[JAM Sensor (SW272)]
When recording paper is jammed, the plate push the switch lever, the input signal of IC151-7 pin (ANALOG) becomes Iow
level. Usually, the plate leaves the switch lever the input signal of IC151-7 pin (ANALOG) becomes high level.
PLATE
+5V
R275
R276
C273
IC151
SW273
6
PLATE
+5V
R273
R274
C272
IC151
SW272
7
Signal (IC151-7 Pin)
JAM
Low level
NO JAM
High level
Analog Board
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