Heathkit W-5M User Manual

STEP-BY-STEP
WIRING
INSTRUCTIONS
Pictorial
1
represents
a completely wired
W-5M
amplifier.
We
again suggest
that
before you
start
wiring,
you attach the large fold-in
version of
this
pictorial
to
the
wall
above
your
work
space,
so
that
it
may
be
conveniently referred
to as the
work
progresses.
Read
the
note on the
inside
rear cover
concerning
wiring
and
soldering.
NOTE:
ALL
GUARANTEES
ARE
VOIDED
AND
WE
WILL
NOT
REPAIR
OR SERVICE
INSTRUMENTS IN
WHICH
ACID
CORE
SOLDER
OR PASTE
FLUXES
HAVE BEEN
USED.
WHEN
IN
DOUBT
ABOUT
SOLDER, IT
IS
RECOMMENDED
THAT
A NEW
ROLL PLAINLY
MARKED
"ROSIN
CORE
RADIO
SOLDER" BE
PURCHASED.
In
Pictorial
1,
note that
each
component
part has
been given
a code
designation
which
corres-
ponds
with
the
identification
used
during the
assembly
of the
kit. In
addition,
each
terminal
on
each
part
has
been
assigned
a
number.
When
the
instructions
read,
"Connect
one
end
of
a
1
jufd
condenser
to
V2-6
(NS),"
it
will
be
under-
stood
that the connection
is
to be
made to
contact
pin
6
on socket
V2.
The
abbreviation
"NS"
indicates
that
the
connections
should
not
be
soldered as yet, as
other
leads
will
be
added
to
the
same
terminal
later.
When
the last
wire is
connected, the
terminal should be
soldered
and
the
abbreviation
"S"
is
used
to
indicate this.
Unless otherwise
indicated,
all
wire
used
is
insulated. Wherever
there
is a
possibility
of
the
bare
leads on
resistors
and
condensers
shorting
to
other
parts
or to
chassis,
the leads
should
be
covered with
insulated
sleeving. This
is
indicated in
the instructions by
the
phrase "use
sleev-
ing.
"
Bare wire
is
used
where the
lead
lengths are
short
and
the
possibility of
short circuits
non-existent.
Use
small
diameter ba-re wire
except
where otherwise
specified.
Leads
on
resistors,
condensers
and transformers
are
generally much
longer than
they
need
to
be
to
make
the
indicated
connections.
In
these cases, the excess
leads should
be cut
off
before
the part
is
added to the
chassis. In
general, the leads
should
be
just
long enough to
reach their
terminating points.
Not
only
does this make
the wiring much
neater, but in many
instances
the
excessively
long
leads will actually interfere
with proper
operation
of the instrument.
The
pictorials
indicate
actual chassis
wiring,
designate values of
the
component parts
and show
color coding
of leads where pertinent.
We
very
strongly urge
that
the
chassis
layout, lead
place-
ment
and
grounding connections
be
followed exactly
as
shown.
While the
arrangement shown
is
probably not
the only
satisfactory layout,
it
is
the
result
of considerable
experimentation
and
trial.
If
followed carefully,
it
will
result
in
a
stable instrument operating
at
a
high
degree of
dependability.
(
,)
Twist
together
the two
green leads
coming
through grommet
T.
Place
them
to
reach socket
V4
and
cut
one lead to
length
sufficient
to
reach
V4-2.
Cut
the other
lead
to
length
to reach
V4-7.
Save
the
cut-off
leads.
Strip
and
tin
the leads.
Connect
either
lead
to
V4-2 (NS)
and
the
other
to
V4-7
(NS).
(See
Figure
12
for tube
socket contact
numbering.)
( ^
Twist
together
the
two black
leads
coming
through grommet T.
Dress
this pair to socket
AA,
using
the
route
shown
in
Pictorial
1 on
Page 16.
Cut
one lead
to reach
AA7
and
the
other
lead
to
reach
AA8. Strip
and
tin the ends.
(’
)
Cut
a
length
of
Spirashield
(the
spring-like
flexible tube)
to a
length of
4
3/4"
and slip
this
over
the
twisted
black leads.
Following
Pictorial
1
carefully,
dress
the
shielded leads
to
the left of
terminal
strips
E
and
F.
( )
Cut
a
1
1/2"
length
of
bare
wire
and
fold
it
in
half to
form
a
hairpin.
Push
the open end
through
the
hole
in
the
bracket for
terminal
strip
F.
Let
the closed
end
extend
horizontally
to
the
left
of the
bracket
and solder the
hairpin
in place.
(
)
Similarly,
connect a
hairpin to the
bracket
for
terminal
strip
E
and
solder
it
in place.
Page
15

Heathkit W-5M Specifications

General

Brand	Heathkit
Model	W-5M
Category	Amplifier
Language	English