Sharp VT-3428X, Руководство по обслуживанию, Страница: 26 / 136

Pinch
Tension gauge
g
Capstan shaft
Tension gauge adapter
Figure
Detach the pinch roller from the capstan shaft.
Set the tension gauge by hooking the tension
gauge adapter onto the pinch roller shaft.
Gradually release the pressure to allow the pinch
roller to touch the capstan shaft. When the
pinch roller just touches the capstan shaft, read
the indication on the gauge.
Check that the reading of the tension gauge is in
the range of to
CHECKING AND ADJUSTMENT OF TENSION
POLE POSITION
l
Remove the cassette housing control assembly.
l
Make a short-circuit between and
both located at the center on your side
on the VCR with a ohm resistor. Now
turn on the power.
l
Setting
Open the lid of cassette tape and hold it
with two pieces of vinyl tapes.
Load the cassette tape into the unit.
Put the weight
on the cassette tape.
Make the adjustment with the beginning of a
E-l tape.
l
Checking
Figure
Set a cassette tape, press the button and get
the tape loaded. Now check the tension pole
position.
Visually check to see if the left end of the tension
pole is in alignment with the line left of
the center line of the roller. Readjust as
required in the following steps.
Tension pole
I
Center line
Figure
Make the with the beginning of a
tape.
If the end is at the left from the center line:
Figure
Remove the cassette and press the button to
make an empty loading. Put a
screwdriver into the tension band positioning
cam and turn it clockwise.
Place the cassette in position and check the
tension pole position.
If the end is at the right from the dotted line:
.
I
iI
I
I
0
Figure l-l
Remove the cassette and press the button to
make an empty loading. Put a
screwdriver into the tension band positioning
cam to turn it counterclockwise.
Place the cassette in position and check the
tension pole position.