Sanyo MCD-Z260F, Service Manual

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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.
Load an azimuth adjustment test tape (VT-f-703 etc., 10
in tape deck.
Press the PLAY button.
Use a cross-tip screwdriver to turn the screw for azimuth
adjustment so that the left and right outputs are maximized.
Press the STOP button.
b. Replacing the Head
R/P HEAD
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After replacing the head, demagnetize the head by using a
degausser.
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All wiring should be returned to the original position after work is
completed.
WHITE YELLOW
RED EARTH
c. Replacing the Motor d. Adjusting Tape Speed
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Use a plastic screwdriver for adjustment.
(1) Inset the test tape 11 N etc., 3000 Hz).
(2) Press the PLAY button.
(3) Use a flat-tip to turn the SVR to adjust so that the frequency
counter becomes 3000 Hz.
‘MOTOR SPEED ADJ.
e. Checking the Mechanism Torques
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Clean the head, capstan and pinch roller before making any measurement.
Measurement
Cassette for
Take-up torque
PLAY: TW-2111A
Back tension
:TW-2111A
Tape tension
Drive-power cassette
measurement
FEW
30-60
1.5-4.5 gr.cm 60 gr or more