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CHECKING AND ADJUSTMENT OF TAKE-UP
TORQUE IN PLAYBACK MODE
Remove the cassette housing control assembly.
1.
Open the lid of the cassette torque meter, and
2.
hold it with a pair of vinyl tapes.
Load a cassette torque meter Into the unit
Set value SP 95 ? 30g.cm
Figure 1-31.
Checking
Check that the torque is in the range of 95 f 30
deviation of the reel drive unit. Use the center of
the fluctuation as the value.
3. Place the unit in the SP record mode, and check
that the take-up torque is within the range.
Adjustment
l
If the take-up torque in the playback mode is
outside the range, replace the take-up reel disk.
Note: Weight the cassette torque meter to
prevent float.
CHECKING AND ADJUSTMENT OF TAKE-UP
TORQUE IN VIDEO SEARCH REWIND MODE
Remove the cassette housing control assembly.
l
Push the play button to place Push the video
the unit I" the playback mode. button to place the unit in the
Place the torque gauge on the supply reel
disk, and turn it
lone rotation every 2 to 3 seconds) and check
that the torque IS wlthln the set value
Note:
Set the torque gauge securely on the supply reel
disk. If it is not secure, the measurement will be
incorrect.
Adjustment
l
If the take-up torque in video search rewind mode
is outside the range, replace the supply reel disk.
Note :
T h e t o r q u e f l u c t u a t e s d u e t o t h e r o t a t i o n a l
deviation of the supply reel disk. Use the center of
the fluctuation at the value.
19
search rewmd
video search rewind mode.
Torque gauge
Supply reel disk x;;>
Figure l-32.
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