CX-1011
4.2 CHECK POINTS OF CASSETTE MECHANISM
- Tape speed deviation:- Wow and flutter:
3,000Hz +90Hz, �30HzLess than 0.15%(WRMS)
(4.76cm/s +3%, �1%)
Using the NCT-111, measure the wow
Confirm the followingUsing an NCT-111, measure the speedand flutter at the start and end of
items when replacingat the start and end of winding andwinding and take the maximum
parts of the cassettetake the maximum values.If valuesvalue. If values indicated by the point-
mechanism .indicated by the pointer vary consid-er very considerably, adjust to 70 % of
erably, adjust to 70% of the minimumthe minimum and maximum values.
and maximum values. MeasuringMeasuring time shall be 5�6 seconds.
time shall be 5�6 seconds.
- Fast forward and rewinding time:- Winding torque:- F.F. torque:
85�105 seconds45�70 gYcmMore than 50 gYcm
(4.41�6.86mNYm)(4.9mNYm more)
Using a C-60, set to fast forward and
rewind, and measure the time with aUsing a cassette type torque meterUsing a cassette type torque meter
stop watch.(100 gYcm), measure the minimum(130 gYcm), measure the value when
value while in the play mode.the tape stops in the F.F. mode.
Measuring time shall be 5�6 seconds.
- REW torque:- Back tension torque:
More than 50 gYcm1.5�5.5 gYcm
(4.9mNYm more)(0.15�0.54mNYm)
Using a cassette type torque meterAfter setting the REW mode without
(130 gYcm), measure the value whenloading a cassette tape for 5 minutes,
the tape stops in the REW mode. measure the back tension torque in
the play mode, using a cassette type
torque meter. |
ACEC
PIONEER
