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1 Threading motor rotation sensor
The threading motor rotation sensor detects the rotation
speed of the threading motor.
The FG output signal of this detection sensor is input to
the servo circuit to control the threading speed so that
the tape is not damaged during threading and
unthreading.
2 Threading-end/unthreading-end sensor
This sensor detects whether the threading ring reaches
the threading-end or unthreading-end position.
3 T tension regulator arm sensor
During playback, this sensor detects the tension arm
position and controls the reel torque to keep a constant
T tape tension.
4 Condensation sensor
This sensor detects whether the dew condensation
occurs in the unit.
5 Tape top sensor
This sensor detects the top of the tape, and in addition
detects the tape end of the tape that runs in the reverse
direction.
6 Reel hub diameter sensor
The reel hub diameter of a cassette tape varies
depending on the length of the tape wound on the
cassette tape. The reel hub diameter sensor detects the
reel hub diameter using a tub on the back side of the
cassette tape. The output signal of this sensor is input
to the servo circuit to control the rotation speed and
torque of the reel motor.
7 Tape thickness sensor
Using a tub on the back side of the cassette tape, this
sensor detects the thickness of the tape wound on a
cassette tape that is being inserted into the unit.
8 Analog/digital tape sensor
Using a tub on the back side of the cassette tape, this
sensor detects whether an analog tape or digital tape is
being inserted into the unit.
9 T reel table rotation sensor
This sensor detects the rotation of the take-up reel
table.
The FG output signal of this sensor is input to the servo
circuit to control the rotation speed of the reel motor.
!/ S reel table rotation sensor
This sensor detects the rotation of the supply reel table.
The FG output signal of this sensor is input to the servo
circuit to control the rotation speed of the reel motor.
!- Reel L/S position sensor
This sensor detects whether the reel table moves to the
correct position according to the size of the inserted
cassette tape.
!= S tension regulator arm sensor
During playback, this sensor detects the tension arm
position and controls the reel torque to keep a constant
S tape tension.
![ Tape end sensor
This sensor detects the end of the tape that runs in the
forward direction.
!] Cassette-in sensor (L)
This sensor detects whether a cassette is being inserted.
!\ Cassette L/S size sensor
This sensor detects whether the inserted cassette tape is
an L size or S size.
!; Cassette-in sensor (R)
This sensor detects whether a cassette is being inserted.
!' Cassette-down (2) sensor
!, Cassette-down (1) sensor
The cassette-down (1) sensor detects the movement of
the cassette compartment through combined ON/OFF
operation of the cassette-down (2) sensor, the cassette-
down (1) sensor, and a cassette-in sensor.
2-4-3. Function and Location of Sensors
2-13
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