Tape Deck Adjustments - Sanyo DC-F320 Service Manual

TAPE DECK ADJUSTMENTS

Adjustment Item
(1) HEAD AZIMUTH
TAPE "A"
(2) HEAD AZIMUTH
TAPE "B"
HEAD REPLACEMENT AND AZIMUTH ADJUSTMENT
1.
(l)Head replacement
After replacement, demagnetize the heads by using a
degausser.
Be sure to clean the heads before attempting to make any
adjustments.
Be sure both channels (1 and 2) are the same level (Using
a dual-channels oscilloscope).
All wiring should be returned to the original position after
work is completed.
(2)Head azimuth
TAPE "A"
Load a test tape (VTT-738, etc.:lOKHz) for azimuth
adjustment.
2. Press the PLAY button.
Use a flat-tip (-) screwdriver to turn the screw for normal
3.
azimuth adjustment so that the left and right outputs are
maximized at the same phase during normal playback.
4. Press the STOP button.
.
TAPE "B"
Load a test tape for azimuth adjustment.
Press the PLAY button.
2.
Azimuth screw adjustment.
3.
Press the STOP button.
4.
Measuring
Test Tape
Instrument
AC-voltmeter
VI-r-738
(1 OKHz)
AC-voltmeter
V-IT-738
(1 OKHz)
_
TAPE "A"
PLAY HEAD
After making the adjustment, secure the azimuth
l
adjustment screw by applying screw lock (TB-1401 B).
- - - -
- - -
- lb -
Adjust
location
HEAD AZIMUTH
SCREW (FWD/REV)
HEAD AZIMUTH
SCREW
TAPE "B"
I
- - - - - -
_ _
Adjust
value
Max.
Max.
1
- - -