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TAPE DECK ADJUSTMENTS
a.
(a)
(b)
(1)
(2)
(3)
(4)
(5)
b.
(a)
I
. .
(b)
I
HEAD
REPLACEMENT
AND HEAD AZIMUTH
ADJUSTMENT
HEAD REPLACEMENT
~fter
replacement,
demagnetize
the heads by using a degausser.
3e
sure to clean
the heads
before attempting
to make
any adjustments.
M~j=l
All wiring should be
returned
to the
original
position
after
work
is completed.
/
[
I
<'\.?-l
wHITE
GND
,>
i
'C(l
J
,p.+
d
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HEAD AZIMUTH
ADJUSTMENT
i_--L--
2 \.
Load the test tape ( VTT-703,
etc., 10 kHz ) for azimuth
'X '<-?'1
'~
adjustment.
"71
~
\
:&$-',
">7f',v
Press the PLAY button.
Use a cross-tip
screwdriver
to turn the screw for azimuth
\~fl#:
adjustment
so that the left and right output are maximized.
k~
Press the the STOP
button.
After
completion
of the adjustment,
use thread
lock (TB-1401B)
to secure the azimuth-adjustment
screw.
MOTOR
REPLACEMENT
AND SPEED ADJUSTMENT
MOTOR
MOTOR
(1) Insert the test tape ( MTT-IIIN,
etc., 3000 Hz ).
(2) Press the PLAY button.
(3) Use a flat-tip screwdriver
to
turn the SVR (located
inside the rear
of the motor) to adjust SVR so that the frequency
counter
becomes
3,000 Hz.
c.
HEAD AZIMUTH
ADJ
CHECKING
THE MECHANISM
TORQUES
AND TENSION
—
Clean the head, capstan and pinch roller before mzking any measurement.
Measurement
Take-up
torque
Back tension
Tape
tension
Cassette
for
PLAY: TW-21 11A
KWve-power
cassette
PLAY: TW-21 11A
measurement
F.FWD/REW:TW-2231
TW.2412
PLAY
30-60
gr.cm
2. O-4.5
grcm
I
60gr
or more
F.FWD
55-
120gr.cm
—
REW
55-120
gr.cm
—
-4-
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