TAPE DECK ADJUSTMENTS
a. HEAD REPLACEMENT AND HEAD AZIMUTH ADJUSTMENT
(a) HEAD REPLACEMENT
● 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.
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(b) HEAD AZIMUTH ADJUSTMENT
(1) Load the test tape ( VTT-703, etc.,
10 kHz ) for azimuth
acljustrment.
(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.
(4)
Press the the STOP button.
(5) After completion of the adjustment, use thread lock (TB-1401B)
to secure the azimuth-adjustment screw.
b. MOTOR REPLACEMENT AND SPEED ADJUSTMENT
(a) MOTOR REPLACEMENT
Q
\
0
., ,._==._ ,
(b) MOTOR
(1) Insert the test tape (
MTT-lll N, etc., 3000 Hz ).
(2)
Press the PLAY button.
(3) Use a flat-tip screwdt’iver to turn the SVR (Ioca[ed inside the rear
of the motor) to adjust SVR so that the frequency counter
c.
●
HEAD AZIMUTH AOJ
becomes 3,000 Hz.
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CHECKING THE MECHANISM TORQUES AND TENSION
Clean the head, capstan and pinch roller before making any measurement.
Measurement
Take-u ptorque Back tension Tape tension
Cassette for
PLAY: TW-2111A
Drive-power cassette
PLAY: TW-21 11A
measurement
F FwDIREW:TW-2231 TW-241 2
PLAY 30- 60gr cm 2.O-45 grcm 60gr or more
F FWD 55– 120gr.cm
— —
REW 55– 120gr.cm
— —
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