Teac X-10 - 2-4 REEL MOTOR TORQUE MEASUREMENT; 2-6 PINCH ROLLER PRESSURE STROKE ADJUSTMENT; 2-7 PINCH ROLLER PRESSURE MEASUREMENT

X-10R/X-10
2-4 REEL MOTOR TORQUE MEASUREMENT
1.
Hold
both
left
and
right
tension
arms
in
the
upper
position
using
rubber
bands.
2.
See
Fig,
2-4.
Measure
torques
for
each
operating
mode
with
the
conditions
specified
in
the
chart.
3.
Since
all
the
torque
values
are
reference
values,
it
is
allowable
that
the
take-up
torque
during
the
fast
forward
or
rewind
mode
is
1
kg-cm
or
more,
and
that
the
back
tension
torque
during
these
mode
is
good
unless
the
left
or
right
tension
arms
are
shut-
off.
4.
There
is
no
specially
provided
adjustment,
so
if
any
torque
cor-
rection
are
needed,
repair
or
replace
defective
part(s)
and/or
circuit(s).
} coD
spring scale { |
TA-1033
Reel torque reference value
Play mode
Take-up:
LARGE
480
+
40
g-cm
(6.1
~
7.2
02-inch)
(B) in REV —
(D) in FWD | SMALL 260 + 40 g-cm (3.1 ~4.2 02-inch)
Back tension: | | aRGe | 300+40 g-cm (3.6 ~4.7 oz-inch)
(A)
in
FWD
(C)
in
REV
|
SMALL
180
+
40
g-cm
(1.9
~3.1
02-inch)
Fast winding mode
a
ake-up: (B) in REW, (D) in F.F. 1100 g-cm (15.3 0z-inch)
Back tension: (A) in F.F., (C) in REW| 50 g-cm (0.7 02-inch)
NOTES: For torque calculation, refer Fig. 2-3.
Fig. 2-4
—
2-5 PAUSE POSITION ADJUSTMENT
1. Place the deck in the pause mode.
2. Adjust by turning the pause positioning nut so that the clearance
between the capstan shaft and the tape is 0.5 mm to 1.0 mm.
3. Of the two capstan shaft/pinch rollers, adjustment is allowable
only for the side having the narrower clearance.
4. Check that, by repetition of play mode to pause mode and stop
mode to pause mode, there is clearance at both sides.
Fig. 2-5 Pause position and pinch roller pressure stroke
adjustments
TA-1034
pinch rollers
Fig. 2-6 Pause position adjustment
2-6 PINCH ROLLER PRESSURE STROKE ADJUSTMENT
1. Set the deck in the forward or reverse play mode.
2. Adjust by turning the pressure storke adj. nut (Fig. 2-5) so that
the clearance between the pin and the stopper cushion is about
1.0 mm.
3. Since the clearance is produced at one side (left or right), ad-
justment for this side only is permissible.
left capstan right capstan
left right
pinch roller pinch roller
7 pin
“ TA-1035
stopper cushions
about 1.0 mm
Either the left or right should have a clearance of about
1.0 mm.
Fig. 2-7
2-7 PINCH ROLLER PRESSURE MEASUREMENT
NOTES: 1. The explanation below applies to both the left and
right pinch rollers.
2. Both pinch roller pressures are automatically set with
equal value.
1. Hold both the left and right tension arms in the upper positions
using rubber bands, string etc.
2. Set the deck in either play mode with no tape loaded.
3. Attach the spring scale to the pinch roller as shown in the figure.
4. Draw the pinch roller away from the capstan shaft (in the
direction of a line intersecting the centers of the capstan shaft
and the pinch roller) until the capstan shaft and the pinch roller
are separated.
5. Return the scale back until the pinch roller just begins to turn.
The scale should then be reading as follow.
Reference value: 1.35 kg to 1.9 kg. (3.0 Ibs to 4.2 Ibs)
6. If the reading is out of specification, replace defective part(s).
There are no adjustable parts.