Teac CX-400 - MECHANICAL ADJUSTMENTS AND CHECKS; CAPSTAN ASSEMBLY THRUST; PINCH ROLLER PRESSURE; REEL TORQUE

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4 MECHANICAL ADJUSTMENTS AND CHECKS
4-1 CAPSTAN ASSEMBLY THRUST
Capstan
shaft
thrust
value:
0.05
mm
to
0.15
mm
4-2
PINCH
ROLLER
PRESSURE
1.
Set
in
the
play
mode
with
no
tape.
2.
Measure
the
pinch
roller
pressure
when
the
pinch
roller
just
begins
rotation
after
it
is
separated
from
the
capstan
shaft.
Pinch
roller
pressure:
350
g
to
450
g
(12.3
oz
to
15.9
oz)
4-3 REEL TORQUE
1.
Load
a
cassette
torque
meter
and
read
the
pointer
indica-
tion
on
the
dial
scale
for
each
tape
movement
operation.
Take-up
40
to
60
g-cm
(0.56
to
0.83
oz-inch)
Supply: 2 to 6 g-cm (0.028 to 0.083 oz-inch)
F.F.: 80 to 150 g-cm (1.1 to 2.1 oz-inch)
REW.: 90 to 150 g-cm (1.2 to 2.1 0z-inch)
4-4 TAPE SPEED
1. Load and play a TEAC MTT-111 test tape.
2.
Using
a
common
slotted
screwdriver
with
a
handle
com-
pletely
insulated
from
the
screwdriver
blade,
adjust
the
control
on
the
motor
(as
far
as
possible)
for
a
reading
of
3,000
Hz
(Spec.:
3,000
Hz
+5
Hz).
NOTE:
This
tape
speed
setting
should
be
done
after
about
20
seconds
of
operating
time.
3.
Check
the
following
at
any
portion
of
the
tape
run.
Tape
speed
deviation
......
3,000
Hz
+60
Hz
Tape
speed
drift...
.....-...--.
.
60
Hz
4-5 TENSION ARM
1.
Check
that
when
the
PLAY
key
is
pushed
then
locked,
the tension arm’s projection is within the specified
area as shown.
4.
If
not,
adjustment
can
be
done
using
the
indicated
screws.
specified
area
djusting
edison <f
erase head
Fig. 4-1
4-6 LUBRICATION
Lubrication is only required when parts are replaced. For
this purpose, use the. oil and grease specified below.
Oil: TEAC spindle oil (from TEAC TZ-255 oil kit),
Mobil D.T.E. Oil Light, or equivalent
Grease: ORE-LUBE G1/3 or equivalent
1. Apply a drop of oil with an oil applicator to a point ab-
out 1/3 the way down the shaft (from the free end) of.
the flywheel, then insert the shaft into the capstan hous-
ing.
2. Apply a suitable amount of light grease to the well of
the flywheel bearing.
Flywheel Ass’y
OIL
GREASE
TA-1024
Fig. 4-2
4-7 VOLTAGE CONVERSION
(GENERAL EXPORT MODEL ONLY)
ALWAYS DISCONNECT THE POWER LINE CORD BE-
FORE MAKING THESE ADJUSTMENTS.
1. Remove the top cover of the deck by removing the screws
from the sides.
2. Locate the voltage selector, shown in the illustration,
near the power transformer.
3. Loosen the two screws in the shorting bar and move the
bar so that it shorts across the terminals marked with the
required voltage (100, 117, 220 or 240).
. Retighten the screws.
. Replace the top cover.
wp
T-I771
Shorting Bar
Fig. 4-3