Teac TASCAM 32 - Page 77

3.
Follow
steps
1
and
2
for
each
measuring
con-
dition;
i.e.,
(A)
through
(D)
in
Fig.
2-3.
4.
lf
the
forward-direction
torque
is
not
correct,
change
the
hooking
position
of
the
spring
hanger
(reference
(D)
in
Fig.
2-2)
for
the
corresponding
brake
requiring
adjustment.
If,
after
the
forward-direction
torque
has
been
properly
adjusted,
the
reverse-direction
torque
is
not
correct,
or
the
forward-direction
torque
is
still
not
correct,
replace
the
brake
felt
pad
with
a
new
one
after
cleaning
the
inner-side
of
the
brake
belt
with
an
alcohol
cleaning
solution,
and
also
check
that
the
brake
mechanism
is
properly
aligned
as
ex-
plained
in
Section
2-4,
“Brake
Mechanism”.
If
necessary,
replace
the
entire
reel
table.
Radius
Fig. 2-3.
Forward
direction
1700
—
2100
g-cm
(B)
(C)
(23.6
—
29.2
oz-inch)
Reverse
direction
(A)
|
650
—
800
g-cm
(D)(Reference
values)
(9.0
—
11.1
oz-inch)
200
g-cm
(2.78 oz-inch)
Left/Right deviation
Torque calculating formulas:
1. Torque (in g-cm or oz-inch)
= Force or Weight (in g or oz) x Radius
(in cm or inch)
2.
Conversion
of
g-cm
to
oz-inch:
g-cm x 0.0139 = oz-inch
2-6. REEL MOTOR TORQUE
Note: *For torque calculation, refer to the said
formulas.
*There is no specially-provided adjust-
ment for take-up torque, so if correction
is needed, repair or replace the defective
part and/or circuit.
2-6-1 Take-up Torque
1. Hold the right tension arm up with a rubber
band.
2.Mount an empty 7” reel onto the take-up
(right) reel table, and attach a spring scale to
the reel with a string.
3. Place the deck in the reproduce mode.
4. Allow the rotation of the reel to slowly pull
the scale toward the reel.
5.Hold the spring scale with enough force to
allow steady reading. See Fig. 2-4.
6. The calculated value should be approx:
REEL SW
550 to 650 g-cm (7.64 to 9.03 oz-i
300 to 400 g-cm (4.17 to 5.55 0z-in) |
TAKE-UP TENSION +
n)
Radius
Fig. 2-4.