Heathkit HW-9 User Manual

Page 25
CIRCUIT
BOARD
CHECKOUT
Heathkit
(
)
P101:
5-pin plug.
Start
the
shorter
pins
into
the
circuit
board
holes.
Then
push
the
plug
down
tight
against
the
circuit board
and
solder
the pins
to
the
foil.
(
)
R173:
500 H
control
(#10-918).
NOTE:
When
you
install a
crystal,
match the
three
leads
with
their
corresponding
holes
in the
circuit
board.
Then
push
the
crystal
down
tight
against the
circuit
board,
solder
the
leads
to
the
foil, and
cut
off
the
excess
lead
lengths
.
Y101:
18.330 MHz
crystal (#404-664).
Carefully
inspect
the foil
side of the
circuit board
for the
following
most-commonly-made
errors:
(
)
Unsoldered
connections. NOTE:
There are
several
unused holes
in the
circuit board.
(
)
Poor solder
connections.
(
)
Solder
bridges
between foil
patterns (See Page
15).
( )
Protruding leads
which
could touch
each
other
or the
chassis
when the
circuit board is
installed later.
Refer to
the
illustrations
where parts
where installed
as
you make
the
following visual
checks:
(
)
Transistors for
the proper type
and
installa-
tion.
(
)
Diodes
for the
proper type
and installation.
Y102: 21.830
MHz crystal (#404-665).
Skip Y103.
Y104: 28.830
MHz crystal (#404-667).
Skip Y105.
Y106: 35.830
MHz crystal (#404-669).
Skip Y107
and Y108.
Y109: 8.8314 MHz
crystal (#404-639).

Heathkit HW-9 Specifications

General

Brand	Heathkit
Model	HW-9
Category	Transceiver
Language	English