Sanyo MCD-Z150F, Руководство по обслуживанию

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TAPE ADJUSTMENTS
a. Adjusting Azimuth
l
Be sure to clean the heads before attempting to make any adjustment.
l
Be sure both channel’s waveform are the same for the phase matching.
l
Be sure both channels (1 and 2) are the same level using a dual-channel oscilloscope.
l
After completion of the adjustment, apply the threadlock (TB-1401 B) to the azimuth adjustment screws to fix them securely.
(3)
Load an azimuth adjustment test tape (VTT-703 etc., 10
in tape deck.
Press the PLAY button.
(4)
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.
HEAD
b. Replacing the Head
l
After replacing the head, demagnetize the head by using a
degausser.
RIP
l
All wiring should be returned to the original position after work is
completed.
c. Replacing the Motor
d. Adjusting Tape Speed
l
Use a plastic screwdriver for adjustment.
(1) Inset the test tape (MTT-I 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.
e. Checking the Mechanism Torques
l
Clean the head, capstan and pinch roller before making any measurement.
Measurement
Cassette for
measurement
PLAY
Take-up torque
Back tension
PLAY l-W-21 11 A
REW TW-2231
30-60
PLAY A
1.5-4.5 gr.cm
55-120 gr.cm
55-120 ar.cm
___
Tape tension
Drive-power cassette
l-W-241 2
60 gr or
more