ASSEMBLY .
INSTRUCTIONS
When
all
of
the
one-half
watt
resistors
are
in
place,
put
the
chassis
bottom
plate
over
them
to
hold
them
in
position
and
carefully
turn
the
board
and
bottom
plate
upside-down.
Solder
each
lead
with
a
small
amount
of
solder.
The
solder
should
flow
smoothly
all
around
the
lead
onto
the
copper.
Cut
off all excess leads. See
detail
A.
After
soldering,
there
should
be
no
space
between
the
bodies
of
the
resistors
and
the
top
of
the
P
board.
If
there
is,
the
resistor
should
be
gentl
pressed
to
the
board
while
the
soldered
leads
are
reheated,
until
the
resistor
is flush
with
the
board.
I
\
NOTE
CAPACITOR
BODY
TOUCHES
BOARD.
DETAIL
"8"
\
2(0Support
the
board
as
in
step
1.
Insert
the
£J
nUcro-
henry
choke
ll2'and
the
heater
choke
I:S.
Wert
all
the
one
watt
resistors.
Insert
the
2.2 mmfd
tubular
capacitor
GJ:1"
(red,
red,
white
and
gray
dots>.
Invert
the
board
and
solder
each
lead
of
these
components
and
trim
off
the
excess.
3(0
Insert
the
two
nine
pin
sockets.
Note
the
location
of
the
flat side
of
each
socket.
Be certain that each
tab goes into its hole
and
does not bend over on top
of
the board.
Seat
each
socket
firmly
to
the
board
and
then
solder
each
pin
an.d
the
center
ground
pin.
4(
to{
Referring
to
the
pictorial
diagram
and
the
values
marked
on
the
individual
capacitors,
insert
all
the
NOTE
BODY
OF
RESISTOR
IS
PRES$EO
TIGHT
TO
BOARD,
MAKE
SOLDER
FLOW
S"'OOTHLY
FROM
LEAD
TO
COPPER.
SNIP
OFF
EXCESS
LEAD
CLOSE
TO
SOLDER.
SNIP
OFr
EXCESS
LEAD
-f}
CORRECT
SOLDER
((
00".""
~
~»)}
?,
DETAil
"A"
Be
sure enough heat reaches both the copper
(J)n
the board
and
the wire to be soldered to
make
asmooth solder junc-
tion.
When
making
connections to the eyelets, be sure that
the solder flows from the wire to the
cyelet
to the board, so
that
the
eyelet
is soldered to the wire
and
to
~he
board at
the same time.
When
installing
components,
be careful
not
to
cover
up
the
identifying
numbers.
Avoid
getting
solder
on
the
outer
%"
edge
of
the
boards.
This
area
contacts
the
chassis when
the
boards
are
mounted
and
solder
splashes
here
will
prevent
a
uniform
contact.
You will
note
that
on
each
etched
circuit
board
all
of
the
component
positions
are
diagrammed
on
the
top
of
the
board
(the
side
without
the
copper).
The
identification
symbol
for
each
component
is
marked
between
the
holes.
into
which
its
leads
will be
inserted.
Resistors
may
be
identified
by
comparing
them
with
the
color
code
provided
on
the
parts
list.
Each
disc
capacitor
is
marked
with
its
value
and
any
special
characteristics.
Other
special com-
ponents
will
be
identified
as
they
are
called
for
in
the
assembly
process.
Assembly
of
the
R..F.
circuit
board
PC-7
1(0'
Position
the
PC-7
etched
circuit
board
in
front
of
you
according
to
the
pictorial
diagram.
Support
the
board
over
an
open
box
or
between
two
objects
so
that
the
leads
from
the
components
may
project
through.
Insert
all
of
the
one-half
watt
resistors
in
their
places
on
the
circuit
board.
To
bend
the
leads
of
each
resistor
to
the
correct
shape,
hold
it
between
the
thumb
and
forefinger
of
one
hand
and
bring
the
thumb
and
forefinger
of
the
other
hand
just
across
the
ends
of
the
body,
bending
the
leads
as
you
do
so.
See
detail
B.
It
will help
in
rechecking
your
work
to
orient
the
color
codes
of
all resistors
uniformly.
YOLI
will first
assemble
the
two
etched
circuit
boards
PC-
7
and
PC-B,
and
then
mount
these
and
the
other
com-
ponents
on
the
chassis
and
complete
the
wiring.
The
Dyna-
tuner's
use
of
etched
circuit
boards,
onto
which
most
of
the
parts
are
mounted,
greatly
simplifies
your
aSsembly
of
the
kit,
and
contributes
strongly
to
its
outstanding
per-
formance. Close
attention
to
the
suggestions
made
here
will
enable
you
to
realize
its
fullest
capabilities.
Before
starting
assembly
of
the
etched
circuit
boards,
observe
detail
A. A
GOOD
SOLDERING
JOB
IS
ESSEN-
TIAL
TO
THE
PERFORMANCE
OF
YOUR
TUNER.
Soldering
to
etched
circuit
boards
is
no
more
difficult
(and
in
some
ways
much
easier)
than
conventional
point-to-point
wiring.
If
any
difficulty is
experienced
in
attempting
to
solder
to
the
copper
sheet
which
is
bonded
to
the
board,
light
rubbing
with
an
ink
eraser
can
clean
the
copper
to
simplify
the
process.
INCORRECT
SOLDER
CONNECTION
=tP
4
