LEASER BEAM SAFETY PRECAUTION
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TAPE ADJUSTMENTS
a.
Replacing the head
b. Adjusting head azimuth
1. After replacement, demagnetize the heads by using a
degausser.
2. Be sure to clean the heads before attempting to make any
adjustments.
3. Be sure both channels (1 and 2) are the same level.
(Using a dual-channels oscilloscope).
4. All wiring should be returned to the original position after
work is completed.
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RIP HEAD
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1. Load a test tape (VTT-738, etc. :lOkHz) for azimuth
adjustment.
2. Press the PLAY button.
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3. Use a cross-tip screwdriver to turn the screw for normal
azimuth adjustment so that the left and right outputs are
maximized at the same phase during normal playback.
4. Press the STOP button.
I
HEAD AZIMUTH
ADJUSTMENT
c. Adjusting motor speed
1.
Insert the test tape (MTT-
2. Press the PLAY button.
3. Use a flat-tip screwdriver
e.
d. Replacing the motor
11
or etc. 3,000 Hz).
\
I turn the SVR to adjust so that
the frequency counter
becomes 3,000 Hz.
4.
Press the STOP button.
Checking the mechanism torques
● Clean the head, capstan and pinch roller before making any
,4:) if (.i
Measurement
Take-up torque Back tension
Tape tension
:1!
Cassettefor
PLAY : CT-120M
PLAY : CT-W
Drive-power cassette
,-“.,;
measurement
F.FWD/REW : CT-F
DM 300
PIAY
30- 60gr.cm
1.0- 6.Ogr.cm
80 gr, or more
yin,+.].
F, FWDIREW
55 gr.cm or more
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-1-
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