Tape Adjustments - Sanyo MCD-Z260F Service Manual

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-I 401 B) to the azimuth adjustment screws to fix them securely.
(1)
(2)
(3)
(4)
b.
Load an azimuth adjustment test tape (VTT-703 etc., 10 kHz)
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.
HEAD
AZIMUTH ADJ.
Replacing the Head
RIP
After replacing the head, demagnetize the head by using a
,., ,
degausser.
WHITE
\
HEAD
YELLOW
All wiring should be returned to the original position after work is
completed.
c. Replacing the Motor
Y
—~F
RED
EARTH
d. Adjusting Tape Speed
Use a plastic screwdriver for adjustment.
(1) Inset the test tape (MTT-111 N etc., 3000 Hz).
(2) Press the PLAY button.
(3) Use a flat-tip screwdriierto turn the SVR to adjust so that the frequency
counter becomes 3000 Hz.
e. Checking the Mechanism Torques
Clean the head, capstan and pinch roller before making any measurement.
n
—
MOTOR SPEED ADJ.
3
Measurement Take-uptorque
Backtension Tape tension
Cassette for PLAY: TW-2111A
PLAY: TW-2111A
Drive-powercassette'
measurement F.FWDI REW ; TW-2231
TW-2412
PLAY
30-60 gr.cm 1.5-4.5 gr.cm
60 gr or more
F.FWD
55-120
ar.cm
— —
I
REw
I
55-120 gr.cm
I
—
I
— 1
-4-