TAPE DECK ADJUSTMENTS
Adjustment Item
Test Tape
Measuring
Srevice Mode
Adjust
Adjust
Instrument
location
value
(1) HEAD AZIMUTH
VI-r-738
AC-voltmeter
HEAD AZIMUTH
Max.
-
TAPE “A”
(1
OKHz)
SCREW
(FWD/REV)
(2) HEAD AZIMUTH
V-IT-738
AC-voltmeter
HEAD AZIMUTH
Max.
_
TAPE
“B”
(1
OKHz)
SCREW
I
1.
HEAD REPLACEMENT AND AZIMUTH ADJUSTMENT
(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”
.
1.
2.
3.
4.
.
1.
2.
3.
4.
TAPE
“B”
Load a test tape for azimuth adjustment.
Press the PLAY button.
Azimuth screw adjustment.
Press the STOP button.
L
Load a test tape (VTT-738,
etc.:lOKHz)
for azimuth
adjustment.
Press the PLAY button.
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.
Press the STOP button.
TAPE “A”
TAPE
“B”
PLAY HEAD
I
R/PHEAD
-,
E. HEAD
----
--___-
---_--
--
1
l After making the adjustment, secure the azimuth
-
lb
-
adjustment screw by applying screw lock (TB-1401 B).
I
~
----
---__-
----
----
To Next Page
Loading...
