Teac A-4010GSL - Playback Head Azimuth Adjustment; Diagrams and Schematics; Simplified Playback Diagram

PLAYBACK
PERFORMANCE
-24dB(8Q LOAD)
FORWARD + Sp
?
PB.FILTER
suieUT
PLAYBACK
HEAD
o
z
(out
PUT}
Bs
-848
REVERSE
>
oot
MONITOR
‘
VU
METER
Fig.
6-1
Simplifier
Diagram
—Playback-
aaa
vR107
vR205
-vr105
vR208
VR207
VR1O8
Fig.
6-2
Adjustable
Parts
Location
PLAYBACK
HEAD
AZIMUTH
ADJUSTMENT
Coarse
Adjustment
1.
Connect
a
level
meter
to
either
OUTPUT
jack.
2.
Thread
a
TEAC
test
tape
YTT-1003
on
the
unit.
3.
Depress
forward
button
(
pe)
and
play
the
15
kHz
test
tone
in
section
2
of
the
test
tape.
4.
Slowly
rotate
the
azimuth
screw(forward)
until
max.
indication
is
obtained
on
the
level
meter.
NOTE:
If
during
playback,
a
slight
pressure
on
the
heads
re-
sults
in
a
rise
of
the
reading
of
the
level
meter,
head
alignment
readjustments
should
be
accomplished.
Fine Adjustment
CAUTION:
After
coarse
adjustment,
do
not
make
large
corrections,
turn
azimuth
screw
1/4
turn
or
less.
5.
It
is
absolutely
essential
to
accomplish
the
coarse
adjustment
before
using
this
method
to
avoid
phase
errors
larger
than
45°
6.
Connect
the
test
equipment
as
shown
in
Fig.
6-7-
7.
Play
a
10
kHz
signal
and
adjust
the
azimuth
screw
until
the
oscil-
loscope
shows
that
the
signals
are
less
than
45°
in
phase.
8.
Secure
the
screw
with
a
drop
of
LOCTITE
and
apply
the
above
proce
dure
to
the
reverse
playback
head.