Table of Contents
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1 Temperature Sensor
1
1
1
1
This sensor detects the temperature to perform black correction.
2 Cassette-in sensor
2
2
2
2
This sensor detects whether a cassett is in.
3 REC INHIBIT sensor
3
3
3
3
This sensor detects the REC inhibiting plug of the cassette tape.
4
4
4
4 Tape end sensor
4
This sensor detects the end of the tape running in the forward direction.
5 Tape top sensor
5
5
5
5
This sensor detects the end of the tape running in the REW direction.
6
6 Function cam sensor
6
6
6
This sensor detects the rotation position of a cam.
7 Take-up reel table rotation sensor
7
7
7
7
This sensor detects the rotation of the take-up reel table. The FG output signal
of this sensor is fed to a servo circuit so as to calculate the winding diameter of
the tape.
8 Cassette lock sensor (switch)
8
8
8
8
This sensor detects whether the cassette compartment is locked.
9 Tape thickness sensor
9
9
9
9
Using a tub on the back side of the cassette tape, this sensor detects the thick-
ness of the tape wound on a cassette tape that is being inserted into the unit.
!/ 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 by the tab on the back side of the cassette tape. The output signal
of this sensor is fed to a servo circuit so as to calculate the winding diameter of
the tape.
!- Condensation sensor
!-
!-
!-
!-
This sensor detects whether condensation occurs in the unit.
!=
!= Supply reel table rotating sensor
!=
!=
!=
This sensor detects the rotation of the supply reel table. The FG output signal of
this sensor is fed to a servo circuit so as to calculate the winding diameter of the
tape.
HDW-F900 P1E2
2-2. Main Parts Location and Circuit Configuration
2-7
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