Tape Adjustments - Sanyo MCD-Z165F Service Manual

TAPE ADJUSTMENTS

a. Adjusting Azimuth
Be sure to clean the heads before attempting to make any adjustment.
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Be sure both channel's waveform are the same for the phase matching.
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Be sure both channels (1 and 2) are the same level using a dual-channel oscilloscope.
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After completion of the adjustment, apply the threadlock (TB-1401B) to the azimuth adjustment screws to fix them securely.
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Load an azimuth adjustment test tape (W-f-703 etc., 10 kHz)
in tape deck.
Press the PLAY button.
Use a cross-tip screwdriver to turn the screw for azimuth
(3)
adjustment so that the left and right outputs are maximized.
Press the STOP button.
(4)
b. Replacing the Head
After replacing the head, demagnetize the head by using a
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degausser.
All wiring should be returned to the original position after work is
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completed.
c. Replacing the Motor
e. Checking the Mechanism Torques
Clean the head, capstan and pinch roller before making any measurement.
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Measurement
Cassette for
measurement
PLAY
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d. Adjusting Tape Speed
Use a plastic screwdriver for adjustment.
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(1) Inset the test tape (Ml-T-1 11 N etc., 3000 Hz).
(2) Press the PLAY button.
(3) Use a flat-tip screwdriver to turn the SVR to adjust so that the frequency
counter becomes 3000 Hz.
Back tension
PLAY: TW-2111A PLAY l-w-21 1 tA
TN-2231
30-60 gr.cm 1 S-4.5 gr.cm
55-120 gr.cm
55-120 gr.cm
R/P HEAD
YELLOW
WHITE
Tape tension
TW-2412
60 gr or more