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RECORD
HEAD
AZIMUTH
ADJUSTMENT
Coarse
Adjustment
NOTE
The
effect
of turning
the
azimuth
screw
will
not
immediately
register
on
the
level
meter.
A slight
delay will
be noticed.
Therefore,
the
screw
must
be rotated
slightly,
and
then
pause
to see
the
effect.
Connect
a Level
Meter
to the
OUTPUT
jacks
and
an AF oscillator
to
the
LINE
IN jacks.
Thread
a record
test
tape
on
the
unit
and place
it in the
record
mode.
Place
the MONITOR
switch
in the
TAPE
position.
Adjust
azimuth
while
recording
the
10 kHz
signal
on
the
tape.
meter.
Fine
Adjustment
~~
10.
It is absolutely
essential
to accomplish
the
coarse
adjustment
before
using
this
method,
to avoid
phase
error
larger
than
45?
Connect
the
test
equipment
as
shown
in figure
below.
Apply
a 7.5
kHz
signal
at -23
dB to the LINE
IN jacks
and
record
this
signal.
Carefully
adjust
the
azimuth
screw
until
the
oscilloscope
shows
the
signal
to be in phase.
Secure
the
screw
with
a drop
of LOCTITE.
RECORDING
BIAS OSC
TEST
TAPE
AF TEST
REC AMP
oe
Fine
Adjustment
Set Up
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