Teac A-450 - REWIND TORQUE; BRAKE TENSION

Fig.
4-5
F.
FWD
&
Rewind
Torque
Measurement
4-4, REWIND TORQUE
Specification:
100
g
cm
(1.4
oz-inch)
or
more
1.
2.
Repeat
the
4-3
procedure,
but
use
the
Supply
Reel
Table
and
Rewind
mode
for
measuring
the
rewind
torque.
(See
Fig.
4-4)
The
specified
value
is
the
same
as
that
of
the
fast
forward
torque.
See
step
5
in
4-3.
4-5. BRAKE TENSION
1.
2.
3.
4.
Switch on POWER.
Load a TEAC MTT-S01 test tape.
Check
for
excess
slack
or
tightness
of
the
tape
when
operation
is
changed
from
play,
fast
forward
and
rewind
mode
to
stop
mode,
respectively.
If
brake
action
is
too
“tight”
or
“loose”,
adjust
by
bending
the
arms
of
the
Brake
Bracket
in
or
out
as
shown
by
the
arrows
in
Fig.
4-7.
TORQUE MEASUREMENT USING
THE CASSETTE TORQUE METER
The
torque
measurements
can
be
easily
done
with
the
Cassette
Torque
Meter
indicated
below.
For
take-up
torque
measurement:
0O~
100
g-cm
For
fast
forward
and
rewind
torque
measurements:
0
~
160
g-cm
By
use
of
this,
it
is
possible
to
directly
obtain
the
torque
value
without
calculation,
and
to
do
the
measurement
sim-
ply
with
no
removal
of
any
parts.
If
repairs
are
necessary,
the
Trim
Case
Cover
and
the
Bottom
Cover
must
be
removed.
Load
the
Meter
on
the
deck
and
read
the
pointer
indication
on
the
dial
scale
for
each
tape
movement
operation.
Fig. 4-7 Brake Tension Adjustment
13