Sony HDW-F500 Maintenance Manual page 78

2-9. Location of Main Parts
1
Threading motor FG sensor
This sensor detects the rotation speed of the
threading motor.
The FG output of this detection sensor enters the
servo circuit, and controls the threading/unthread-
ing speed to protect the tape from damages during
threading.
2
Threading/unthreading sensors
These sensors detect whether the threading ring
has reached the threading-end or unthreading-end
position.
3
T tension regulator arm sensor
This sensor detects the position of the tension arm
and controls the reel torque to keep the T side
tape tension constant during recording and
playback.
4
Condensation sensor
This sensor detects whether condensation has
occurred in the unit or not.
5
Tape top sensor
This sensor detects the tape end of the tape
running in the REV direction.
6
Cleaning cassette tape sensor
This sensor detects whether the cassette inserted
is the normal cassette tape or cleaning cassette
tape using the tab on the back of the cassette.
7
Tape thickness sensor
This sensor detects the thickness of the tape
wound around the cassette inserted in the unit
using the tab on the back of the cassette.
89!/ Cassette classification sensors
These sensors detect whether the three cassette
type detection tabs on a cassette are present or
not, to discriminate if the cassette can be used in
this unit or not.
!-
L cassette REC inhibit sensor
This sensor (switch) detects the REC inhibit plug
of the large cassette.
2-16
!=
T reel table FG sensor
This sensor detects the rotation speed of the take-
up reel table.
The FG output of this sensor is input to the servo
circuit to control the rotation speed of the reel
motor.
![
S reel table FG sensor
This sensor detects the rotation speed of the
supply reel table.
The FG output of this sensor is input to the servo
circuit to control the rotation speed of the reel
motor.
!]
Reel L/S position sensor
These sensors detect whether the reel table moves
to the correct position according to the size of the
inserted cassette.
!\
S cassette REC inhibit sensor
This sensor (switch) detects the REC inhibit plug
of small cassettes.
!;
S tension regulator arm sensor
This sensor detects the position of the tension arm
and controls the reel torque to keep the T side
tension constant during recording and playback.
!'
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 or not.
!.
Cassette L/S size sensor
This sensor detects whether the cassette inserted
is L size or S size.
@/
Cassette-in sensor (R)
This sensor detects whether a cassette is being
inserted or not.
@-
Cassette-down (2) sensor
@=
Cassette-down (1) sensor
These sensors detect the movement of the cassette
compartment by the combination of the ON/OFF
of the cassette-down (2) sensor, cassette-down (1)
sensor and cassette-in sensor.
HDW-F500E MMP1