Sanyo MCD-Z165F, Service Manual

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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-1401B) to the azimuth adjustment screws to fix them securely.
(3)
(4)
Load an azimuth adjustment test tape 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
l
After replacing the head, demagnetize the head by using a
degausser.
l
All wiring should be returned to the original position after work is
completed.
c. Replacing the Motor
R/P HEAD
WHITE YELLOW
d. Adjusting Tape Speed
l
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 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 toraue Back tension
Tape tension
Cassette for PLAY: TW-2111A
PLAY
Drive-power cassette
measurement
TN-2231 TW-2412
PLAY 30-60 gr.cm
55-120
55-120
1 gr.cm 60 gr or more