Teac A-4010GSL - Electrical Measurement and Adjustment

G
MEASUREMENT
ANID
A
—~ELECTRICAL—
GENERAL
NOTICE
Before
performing
any
maintenance
on
this
unit,
all
metal
parts
that
the
tape
will
come
into
contact
with
must
be
cleaned
and
demagnetized.
=
It
is
important
that
the
unit
is
set
for
the
proper
voltage
and
frequency
for
your
locality.
Standard
test
tapes-and
test
equipment
must
be
used
when
per-
forming
maintenance
to
insure
reliable
results.
Procedures
for
checks
and
adjustments,
unless
otherwise
indi-
cated,
are
for
the
left
channel
at
7-1/2ips.
The
same
pro7~
cedures
are
to
be
applied
to
the
right
channel
and
3-3/4ips
tape speed.
All
controls
mentioned
in
this
book
will
be
printed
in
bold
letters
and
will
be
exactly
as
they
appear
on
the
unit.
Double
designated
symbol
numbers
refer
to
left
channel/right
channel.
THD:
Third
harmonic
distortion.
Value
of
"dB"
in
the
text
refers
to
0dB=0.775V,
except
where
specified.
If
a
level
meter
or
an
AC
VTVM
calibrated
to
OdB
=1V
is
to
be
used,
appropriate
compensation
should
be
made
by
adding
approximately
+2
dB.
DJUSTMENT