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TAPE DECK ADJUSTMENTS
l.HEADREPLACEMENT
After replacement,
demagnetize
the heads by using a degausser.
Be sure to clean the heads before attempting
to make any adjustments.
All wiring should be returned to the original position after work is completed.
Mm
2. HEAD AZIMUTH
ADJUSTMENT
(1) Load
the test
tape(VTT-703,
etc.,
10 kHz)
for azimuth
[
bl<
Y
'"'''''""
adjustment.
(2) Press the PLAY
button.
(3) Use a cross-tip
screwdriver
to turn the screw
for azimuth
adjustment
so that the left and right output are maximized.
q
$$
>
.,
(4) Press the
STOP
button.
(5) After completion of the adjustment,
use thread lock(TB-1 401 B)
m~g
to secure the azimuth-adjustment
screw.
3. MOTOR REPLACEMENT
4. MOTOR SPEED ADJUSTMENT
(1)
(2)
(3)
Insert the test tape(MIT-111
N, etc., 3,000
Hz).
Press the PLAY
button.
Use a flat-tip screwdriver
to turn the SVR(located
inside the
4:"
L
rear of the motor) to adjust SVR so that the frequency
counter
become
3,000
Hz.
~n
J
@
5. CHECKING
THE MECHANISM
TORQUES
AND TENSION
BACK SIDE OF SET
Clean the head, capstan
and pinch roller before making any measurement.
Measurement
Take-up
torque
Back
tension
Tape
tension
Cassette for
PLAY : TW-21 11A
PLAY : TW-21 11A
Drive-power
cassette
measurement
F. FWD/REW
: TW-2231
TW-2412
PLAY
30-60
gr.cm
2.0-
4.5 gr.cm
60 gr or more
F.!+JD
55-120
gr.cm
-----
-----
REW
55-120
gr.cm
-----
-----
-5-
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