Sanyo DC-F430AV - Tuner Operation; Radio Tuning and Presets

TAPE DECK ADJUSTMENTS
Adjustment Item Test Tape Measuring Srevice Mode
Adjust Adjust
Instrument
location value
(1)
HEAD AZIMUTH V-IT-736 AC-voltmeter
HEAD AZIMUTH Max.
TAPE “A” (1OKHZ) SCREW (FWDIREV)
(2) HEAD AZIMUTH vl-r-73B
AC-voltmeter HEAD AZIMUTH
—
Max.
TAPE “B” (1OKHZ) SCREW
(3-a) MOTOR SPEED
MTT-211 FREQUENCY COMPUTER REC
VR311 (TAPE “A”) 3,000Hz
(HIGH) (1,500Hz) COUNTER
(HIGH)
VR313 (TAPE “B)
(3-b) MOTOR SPEED
MlT-l 11 FREQUENCY COMPUTER REC
VR312 (TAPE “A”)
3,000Hz
(NORMAL) (3,000Hz)
COUNTER (NORMAL)
VR314 (TAPE “B”)
1. HEAD REPLACEMENT AND AZIMUTH ADJUSTMENT
(l)Head replacement
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.
(2)Head azimuth
. TApE llAI1
1. Load a test tape (VTT-738, etc.:l OKHz) for azimuth
adjustment.
2.
Press the FORWARD PLAY button. (Normal playback)
3. Use a flat-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.
.
TAPE “A”
PLAY HEAD
k
(ELLOWT
rRED
WHITE
TAPE “B”
R / P HEAD
‘“cKeED
~ E. HEAD
4. Press the Tape “A REVERSE MODE button.
5. Play the tape in the reverse mode.
6. Use a flat-tip (-) screwdriver to turn the screw for reverse
azimuth adjustment so that the left and right outputs are
maximized at the same phase during reverse playback.
7. Press the STOP button.
● TAPE “B”
w
1. Load a test tape for (VTT-738, etc.:l OKHz)azimuth
u\ .\
adjustment.
2. Press the FORWARD PLAY button.
3. Azimuth screw adjustment.
4. Press the STOP button.
= PUSH
r
———— ———— ———— —.
1
● After making the adjustment, secure the azimuth
I
w
I
adjustment screw by applying screw lock (TB-1 401 B). 1
L ——— ——— ——— ——— ——— .—
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