Sony DSR-80 - 3-1-3. Location of Sensors (1)

3-4
DSR-80/80P/60/60P
3-1-3. Location of Sensors (1)
1 Tape beginning / end detect LED
This sensor detects the beginning and end of the tape.
2 Tension sensor
A tension arm operates to keep the tape tension
constant during recording and playing. The tension
sensor detects the position of the tension arm.
3 Tape end sensor
This sensor detects the end of the tape running in the
FWD direction.
4 Supply reel table rotation sensor
This sensor detects the rotation of the supply reel table.
The PG output of this sensor is input to the servo
circuit to control the speed and torque of the reel motor
rotation.
5 Reel L/S position sensor
This sensor detects whether the reel table is at the
specified position in accordance with the size of the
inserted cassette tape.
6 Cassette memory terminal
This terminal performs reading and writing of the data
in the cassette memory, and checks the presence of the
cassette memory.
7 Record proof sensor (common to standard and mini
size cassettes)
Switch protecting S cassette metal tape from recording.
8 Take-up reel table rotation sensor
This sensor detects the rotation of the take-up reel
table.
The FG output of this detection sensor is input to the
servo circuit to control the speed and torque of rotation
of the reel motor.
9 Tape beginning sensor
This sensor detects the beginning of the tape running in
the FWD direction.
!/ Gear box motor rotation sensor
This sensor detects the rotation speed of the gear box
motor.
The FG output of this detection sensor is input to the
servo circuit to control the threading speed so that too
much force is not applied to the tape during threading.
!- Condensation sensor
This sensor detects condensation generated in the set.
!= Threading end/unthreading end sensor
This sensor detects whether the threading ring is at the
position of the threading end or unthreading end.
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