Heathkit HW-12 - Soldering Information

STEP-BY-STEP
PROCEDURE
The following instructions are presented in a
logical
step-by-step
sequence
to
enable
you
to
complete your kit with the least possible con-
fusion, Be sure to read each step all the way
through
before
beginning
the
specified
operation,
Also read several steps ahead of the actual step
being
performed.
This
will
familiarize
you
with
the
relationship
of
the
subsequent
operations,
When
the
step
is
completed,
check
it
off
in
the
space
provided,
This
is
particularly
important
as
it
may
prevent
errors
or
omissions,
espe-
cially
if
your
work
is
interrupted.
Some
kit
builders
have
also
found
it
helpful
to
mark
each
wire
and
part
in
colored
pencil
on
the
Pictorial
as it is added,
1 FEhIeTRATIN
The be Wa FR PA SE IONS
The fold-out diagrams in this manual may be
a i
removed and attached to the wall above your
+t Wy
working arca; but because they are an integral
part of the instructions, they should be returned
to the manual after the kit is completed,
eral, the illustrations in this manual
> Mek lilies ations 4m Efi
to the actual configuration of the
however, in some instances the illustra~
.
Lay sOWE VEL Ole
clearly showing all of the parts.
SOLDERING INFORMATION
The abbreviation "NS" indicates that a con-.
nection should not be soldered yet as other ,
wires will be added, When the last wire is |
installed, the terminal should be soldered and |
the abbreviation "S' is used to indicate this, Note |
that a number will appear after each solder |
instruction, This number indicates the number of |
leads that are supposed to be connected to the
terminai in point before it is soidered. For
example, if the instruction reads, "Connect a
wire to lug 1 (8-2),"' it will be understood that
there will be two wires connected to the terminal
at the time it is soldered, (Incases where a wire
passes through a terminal or lug and then con-
nects to another point, it will count astwo wires,
one entering and one leaving the terminal.)
GENERAL
The steps directing the installation of resistors
A nbs lan aay nae
include color codes to help identify the parts,
Also, if a part is identified by a letter=number
tte A 2. 42 2 s/T4 ate
GQeSipgiation (vi, Ci, etc ») on the Schematic, 1S
designation will appear at the beginning of the
ee mbna Sesh dn Te on
assembly step Wwnicn directs its installation,
Letter-number designations for parts mounted
mina hhaamAe nan he foaimada hy chaaline
on the circuit DOaTaS Cail of 1OUNG vy Cucumis
the Circuit Board X-Ray Views at the rear of
anes F
the manual,
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