TAPE DECK ADJUSTMENTS
a. HEAD REPLACEMENT AND AZIMUTH ADJUSTMENT
(a) Head Replacement
. After replacement, demagnetize the heads by using a
head eraser.
● Be sure to clean the heads before attempting to make
any adjustment.
(b) Head Azimuth Adjustment
(1) Load the test tape (OA-A411, etc. : 6,300 Hz) for
azimuth adjustment.
(2) Press the PLAY button.
(3) Use a cross-tip screwdriver to turn the screw for
azimuth adjustment so that the outputs are maximized.
(4) After completion of the adjustment, use thread lock
(TB-1 401 B) to secure the azimuth-adjustment screw.
b. MOTOR SPEED ADJUSTMENT
(1) Insert the test tape (OA-W411, etc. : 3,000Hz).
(2) Press the PLAY button.
(3) Adjust SVR so that the frequency counter shows are
reading of 3,000 Hz.
HEAD AZIMUTH
ADJUSTMENT
.
c. CHECKING THE MECHANISM TORQUES AND TENSION
. Clean the head, capstan and pinch roller before making any measurement
Measurement Take-up torque
Tape tension
Cassette for PLAY: TW-llll A Drive-power cassette
measurement F.FWD/REW : TW-1231A TW-1412
PLAY 7- 16gr.cm 30qr(MlN.)
j F. FWD/REW I 40 ar.cm (MIN.)
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