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Verfügbare Sprachen
Verfügbare Sprachen
VERTICAL ADJUSTMENT OF TENSION POLE
Verticality
@ Vertical Check
1. Remove the cassette housing
;
2. Set a guide pole height-adjusting jig as shown in Fig.
Tensor pole
63.
Guide pole
.
:
ae
height adjust
3. Uses
vinyl
tape (black) to cover
the light receiving
Tension arm
ing jig
=
cells of the photo detector (the end sensor and start
sensor) to close off light from entering.
;
Guide plate
Note:
Move
the eject lever to lock the cassette housing, and
turn on the cassette switch to do the checking.
Figure 63.
4. Push
the
play
button;
but
no
video
cassette
tape
should be loaded in the unit.
5. Then,
check
for the verticality
of the tension pole.
ADJUSTMENT OF BACK TENSION
© Checking
1.
Remove the cassette housing.
indicated
by the
pointer
of the measuring
cassette
tape.
. The video
cassette
tape must
be surely wound
over
2. Set a back tension measuring cassette tape as shown
in Fig. 64.
the retaining guide pole.
3. Push the play button, then check that the back tension
. See
there
is neither
looseness
nor
damage
of the
is within 26 to 29 gr. cm (specified value), which is
tape at its start and end positions.
a7
Retaining guide pole (supply side)
Tension pole
Video cassette tape
Tension arm
Tension arm
spring
Spring angle
of—cm
60-1
Back tension
measuring
cassette
@ Adjustment
spring
hooking
plate
in
the
arrow
direction
B to
the specified range (26 to 29 gr. cm):
Loosen a little the screw @ , move the tension arm's
If the screw is tightened too much beyond the limit,
its effect becomes nil. Avoid this.
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