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TAPE ADJUSTMENTS
a. Adjusting Azimuth
• Be sure to clean the heads before attempting to make any adjustment.
• Be sure both channel's waveform are the same for the phase matching.
• Be sure both channels (1 and 2) are the same level using a dual-channel oscilloscope.
• After completion of the adjustment, apply the threadlock (TB-1401B) to the azimuth adjustment screws to fix them securely.
(1) Load an azimuth adjustment test tape (VTT-703 etc., 10 kHz)
in tape deck.
(2) Press the PLAY button.
(3) Use a cross-tip screwdriver to turn the screw for azimuth
adjustment so that the left and right outputs are maximized.
(4) Press the STOP button.
b. Replacing the Head
• After replacing the head, demagnetize the head by using a
degausser.
• All wiring should be returned to the original position after work is
completed.
c. Adjusting Tape Speed
• Use a plastic screwdriver for adjustment.
(1) Inset the test tape (TCC-119 etc., 3000 Hz).
(2) Press the PLAY button.
(3) Use a flat-tip screwdriver to turn the VR403 to adjust so that
the frequency counter becomes 3000 Hz.
d. Checking the Mechanism Torques
• Clean the head, capstan and pinch roller before making any measurement.
Measurement
Cassette for
measurement
Take-up torque
PLAY : TW-2111A
F.FWD / REW : TW-2231
PLAY
23~50 gr.cm
F.FWD
55 gr.cm more
REW
55 gr.cm more
HEAD AZIMUTH ADJUSTMENT
PLAY
TAPE SPEED CONTROL
TAPE PLAY SPEED
SLOW NOR FAST
Back tension
Drive-power cassette
PLAY : TW-2111A
1.0~5.0 gr.cm
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- 1 -
R / P HEAD
BLACK
WHITE
WHITE
GRAY
2.4 4.8
SPEED
MOTOR SPEED
ADJUSTMENT
Tape tension
TW-2412
30 gr or more
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