Heathkit HW-9 User Manual

Page
36
Heathkif
)
L418:
100
\iH
(brn-blk-brn,
#45-621)
choke.
)
L423:
100
\sH
(brn-blk-brn,
#45-621)
choke.
)
W409:
1"
violet
solid
wire.
)
Solder
the
leads to
the
foil and
cut
off the
ex
cess
lead
lengths.
nstall
parts
in
Section 4
of the
circuit
board as
fol-
ows:
)
W421:
1"
violet solid
wire.
)
L303:
100
p,H
(brn-blk-brn,
#45-621)
choke.
)
L302:
100
jjlH
(brn-blk-brn,
#45-621)
choke.
)
Solder
the
leads to
the
foil and
cut
off the
ex-
cess
lead
lengths.
nstall
parts in
Section 5
of the
circuit
board
as fol-
ows:
NOTES:
1.
In
some
of the
following
steps,
you
will be
directed
to
install
an IC
socket.
First,
make
sure
the
pins
are
straight.
Then
start the
pins
into
the
circuit
board
holes.
The
index
mark
on
the
circuit
board
must
still be
visible
after
you
install
the
socket.
Solder
the
pins
to
the
foil as you
install
each
socket.
INDEX
MARK
CONNECTOR
••
^
:-.-.-:p
-
•
»
•
m
•
m
1A
_
* *
INDEX
MARK
2. It is
very
easy to
form a solder bridge between
foils when you install an IC socket. After you
install each
socket, carefully inspect the foil
for
solder bridges and
remove any that you
find, as described below. If you suspect
that
you
have
a
solder bridge,
but
are
not
positive,
you can check
your
foil
pattern
against
the
one
shown
in
the
corresponding
"X-Ray
View"
(Illustration
Booklet,
Page
37).
To
remove
a
solder
bridge,
hold
the circuit
board
component-side-up
as shown
and
hold
your
solder-
ing
iron
tip between
the two
points
that
are
bridged.
The
solder
will flow
down
the
soldering
iron
tip.
CIRCUIT
BOARD
IC
SOCKET
F
o, L
>"uy"iUi
'
u
u
o
1 ,1 1
^^SOLDER
SOLDERING
IRON
BRIDGE
)
Install
a 14-pin IC socket
at U304
)
W422:
1-1/4"
violet solid wire.
)
L301:
100
(brn-blk-brn,
#45-621)
choke
)
W302:
3/4"
small bare wire.
)
L305: 100 *iH (brn-blk-brn,
#45-621)
choke.
)
L304: 68 \xH (blu-gry-blk,
#45-622)
choke.
)
Solder the leads
to the foil and
cut off the
ex-
cess lead lengths.
nstall parts in
Section 6 of the circuit
board
as fol-
ows.
)
W303:
1-3/4"
violet solid wire.
)
8-pin IC socket
at U302.
)
L307: 100 \xH (brn-blk-brn,
#45-621)
choke.
)
L308: 100 »xH (brn-blk-brn,
#45-621)
choke.
)
8-pin IC socket
at U301.
)
L306:
100 yM (brn-blk-brn,
#45-621)
choke.
)
14-pin IC socket
at U306.
)
Solder the leads
to
the
foil and
cut off
the ex-
cess lead lengths.
o (INCHES)
1/8 . 3/8
I
5/8
,
7/8
I
6
1
'
I
1
«"T
-4
X
O
*
(CM) 2
T
3
T
4
I
5
I
6
T
i
11
12
13 14
r
15
I
17

Heathkit HW-9 Specifications

General

Brand	Heathkit
Model	HW-9
Category	Transceiver
Language	English