DV-NC65H/S
DV-NC70H
8-12. CHECKING THE VIDEO SEARCH REWIND
BACK TENSION
Y Remove the cassette housing control assembly.
Y After short-circuiting between TP803 and TP802 pro-
vided at VCR Operation PWB, plug in the power cord.
Tension gauge
Pinch roller
900 - 1,200gf
Y Checking
1. After pressing the play button, press the rewind button,
and set the video search rewind mode.
2. Place the torque gauge on the take-up reel disk, and turn
it counterclockwise very slowly (one rotation every 2 to
Capstan shaft
3 seconds) and check that the torque is within the set
value 3.7 ? 1.5mNAm (38 ? 15gfAcm).Tension gauge adapter
Figure 8-12.
Torque gauge
1. Detach the pinch roller from the capstan shaft.
Do not separate excessively. Or the pinch lever and
CCW
pinch double action lever may disengage.
2. Engage the tension gauge adapter with the pinch roller
shaft, and pull in the arrow direction.
3. Gradually return the pinch roller, and measure the
Take-up reel disk
pulling force when the pinch roller contacts the capstan
shaft.
4. Make sure that the measured value is within setting
change to 9.8 ? 2N (1.0 ? 0.2kgf).
8-14. CHECKING AND ADJUSTMENT OF
Figure 8-11.TENSION POLE POSITION
Y Setting (with cassette control housing)
Note:1. Insert cassette tape (E-180)
Set the torque gauge securely on the take-up reel disk.2. Make the adjustment with the beginning of a E-180 tape.
If it is not secure, the measurement will be incorrect.
8-13. CHECKING THE PINCH ROLLER
PRESSURE
* Checking can be perform with or without cassette
housing control.
Y Remove the cassette housing control assembly.
Y After short-circuiting between TP803 and TP802 pro-
vided at VCR Operation PWB, plug in the power cord.
(E-180)
Y Checking
Press the play button to set the playback mode.
Figure 8-13.
30 |
ACEC
