.
"
touched,
the
circuitry
immediately
following
it
should
be
carefully checked.
For
these
tests
the
volume control
knob
should
be
pushed
"IN"
so
that
the
left
and
right
channels
will be
independent
on
stereo
programs.
In
most
cases,
if
the
VB
socket
has
been correctly wired,
improper
indication
by
the
STEREOCATOR
is
an
effect
rather
than
a cause.
If
the
STEREOCATOR
indicates
STEREO
on
both
mono
and
stereo
stations,
the
19KC
amplifier is oscillating.
A rough check of
the
STEREOCATOR
is
to
disconnect
the
green wire from
eyelet
#75
and
touch
the
free
end
with
the
finger,
which
should
illuminate
the word
STEREO.
If
the
STEREOCATOR
passes
this
test,
but
does
not
deflect
on
a
known
stereo
broadcast, check
the
6BLB,
and
also
check
the
continuity
of T71
and
T72
with
an
ohmmeter.
The
resistance
of each
transformer
pin
to
ground
is
approx-
imately
as
follows:
#1
pin-On,
#2
pin-40n,
#3
pin-IOn,
#4
pin-lOOn.
The
#1
pin
is
identified on
the
board
by
a
white
mark
(the
indicator
on
the
top
of
the
transformer)
and
the
pins
are
numbered
clockwise
when
looking
at
the
bottom
of
the
board.
If
the
STEREOCATOR
aligns
normally
but
does
not
close
completely
on
every
stereo
broadcast,
this
should
be
re-
garded
as
a
transmission
deficiency if
other
stereo
broad-
casts
cause
the
STEREOCATOR
to
overlap
normally.
If
the
STEREOCATOR
is
operating
correctly,
but
there
is
little
or
no
separation
on
a known stereo broadcast,
make
certain
that
the
fault
does
not
lie
in
the
broadcast.
Program
material
or
transmission
deficiencies
are
common causes
of
such
complaints
where
stereo
programming
is relatively
new.
If
it
has
been
determined
that
poor
separation
is
a
fault
of
the
tuner,
and
the
STEREOCATOR
operates
normally,
the
fault
may
lie
in
a weak
6BL8,
or
in
incorrectly
aligned
transformers
T71,
T72
or
T73.
Incorrect
alignment
can
also
cause
channel
reversal.
Normally,
the
A
output
jack
(the
one
nearest
the
line
cord)
is
the left channel.
The
6BLB
should
be checked
by
substitution.
An
approximate
mechan-
ical positioning of
the
transformer
slugs
may
facilitate
realignment
by
the
procedure
described
earlier
in
the
man-
ual.
T71
and
T72
should
be
set
2 to 5
turns
clockwise from
the
top
of
the
transformer;
the
bottom
slug
of
T73
should
be
set
2
turns
clockwise
(when
viewed from
the
boftom) from
the
stop
at
the
bottom
of
the
transformer;
and
the
top
slug
of
T73
will
usually
reach
its
peak
6
to
8
turns
clockwise
from
the
top
of
the
transformer. A false
peak
a few
turns
from
the
top
may
be
noticed
on
the
top
slug
of T73.
The
correct
peak, however, will
always
produce
a
greater
closure
of
the
STEREOCATOR.
Now
proceed with
normal
aligrunent.
A
diode
which is
faulty,
or
one
which is
installed
in-
correctly
may
also
reduce
the
separation,
but
this
will
usually
be
accompanied
by
a significant
reduction
in
out-
put
on
the
affected
channel.
If
the
6BL8
tube
is
removed,
there
will be
no
separation,
and
the
STEREOCATOR
will
not
light,
but
monophonic
trans-
missions will
still
be received
normally
with
equal
output
from
the
A
and
B
output
jacks. H
these
signals
are
un-
balanced,
or
if
one
channel
is
distorted,
the
difficulty is
in the diode bridge or in
the
V72
circuit.
Once aligned,
the
separation
capabilities
of
the
tuner
do
not
vary,
but
are
determined
by
program
variations.
In
isolated instances, a
program
which does
not
fully conform
to
established
broadcast
standards
may
be received
with
below
normal
separation.
FACTORY
SERVICE
AND
WARRANTY
The
Dynatuner
is
designed to provide reliable, trouble-
free performance for a long
period
of time, when
properly
assembled
and
installed.
It
is
intended
for
use
with
the
l20-volt
AC
power
supplied
to
most
homes. Although vari-
ations
of several volts above or below
this
figure will
have
no
pronounced
effect
upon
performance
or
component
life,
the
normal
guarantee
on
the
equipment
is
not
applicable
if
it
is
operated
with
AC
inputs
greater
than
130 volts.
If
your
local power
is
this
high
or
higher
in
voltage,
it
is
suggested
that
a voltage
regulating
or
adjusting
device
be
installed
to
protect
the
tuner.
All
parts
used
in
the
Dynatuner
are
guaranteed
for a
period
of
one
year
from the
date
of
purchase
except
tubes,
which
carry
the
standard
electronic
industry
(EIA)
90-day
warranty.
Defective
parts
will be
replaced
at
no
charge
if
they
are
returned
prepaid
to
the
factory
either
directly
or
via
the
dealer
from whom
the
kit
was purchased.
After
the
guarantee
period
has
passed,
DYNACO,
Inc. will
supply
any
non-standard
parts
used
at
net
prices.
Parts
which
are
standard
(resistors, capacitors,
tubes)
can
generally
be
purchased
from a local electronics
supply
store.
H
the
PA-509
transformer
is
returned
for factory
repair
or
exchange,
it
should
be removed from
the
tuner
without
cutting
the
leads
short.
If
leads have been
cut
rather
than
unsoldered, so that
they
are no longer usable, the guarantee
on
the transformer is voided.
In
the
event
that
the
assembled
tuner
does
not
function
properly
or
breaks
down
after
some use,
Dyna
Company
will service
the
tuner
for a fixed service fee
plus
the
cost of
parts
which
have
been
damaged
by
the
user
or
are
past
the
guarantee
period.
The
service fee is $12.50
and
includes
necessary repairs, checkout"
and
alignment.
If
only
check-
out
and
alignment
are
required,
the
service fee is $5.00.
Factory
assembled
Cynatuners
include
a
one-year
war-
ranty
on
labor
as
well
as
parts.
Fixed-charge service
and
maintenance
are
not
available
for
kits
whjch
are
incompletely
wired
or
kits
wired
with
solder
other
than
rosin core
type,
or
kits
physically
or
electrically modified
without
prior
factory
authorization.
The
serial
number
on
the
front
cover of
this
instruction
book
must
be
mentioned
in
all
correspondence
and
in
any
case where
parts
are
returned,
or
kits
sent
or
brought
to
the
factory
for service.
Returns
do
not
require
prior
factory
authorization.
It
js
the
factory
prerogative
to
limit
the
service faciHty
to
one
year
from
the
date
of
purchase.
When
shipping
the
tuner
to
DYNACO,
Inc., for serv-
ice,
attach
a
note
specifying
the
symptoms,
the
name
and
address
of
the
sender,
and
the
serial
number
of
the
kit.
The
kit
should
be
securely
packed
to
withstand
the
abuses
of
handling
in
transit.
The
front
plate
should
be
protected
with
a
plastic
or
wax
paper
covering,
or
it
may
be
removed.
The
unit
should
be
placed
in
a rugged
carton
sur-
rounded
by
several inches of
shredded
paper
or
other
soft
packing
material.
The
original
carton
in which
the
tuner
is
supplied
is
suitable
for
shipping
if
the
original
inserts
are
properly
used.
Shipment
should
be
made
by
prepaid
EXPRESS,
where
possible;
repaired
kits will
then
be
returned
EXPRESS
C.O.D. for
freight
and
service charges
(unless
these
charges
have
been
prepaid).
PARCEL
POST
IS
NOT
A
SAFE
METHOD
FOR
THE
SHIPMENT
OF
ASSEMBLED
KITS,
AND
SHOULD
NOT
BE
USED
FOR
THIS
PURPOSE.
The
DYNA
Company
assumes
no
liability
or
responsi-
bility
for
damages
or
injuries
sustained
in
assembly
or
operation
of
the
Dynakit.
21
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