Heathkit HW-9 User Manual

Page 48
Heathkif
CIRCUIT
BOARD
CHECKOUT
Carefully
inspect
the
foil
side
of
the
circuit
board
for
the
following
most-commonly-made
errors:
(
)
Unsoldered
connections.
(
)
Poor
solder
connections.
(
)
Solder
bridges
between
foil
patterns.
(
)
Protruding
leads
which
could
touch
each
other
or
the
chassis
when the
circuit
board
is
installed
later.
Refer
to the
illustrations
where
parts
are
installed
as
you
make
the
following
visual
checks:
(
)
Transistors
for the
proper type
and
installa-
tion.
(
)
Integrated
circuits
for the
proper type
and in-
stallation.
(
)
Diodes
for
the
proper type
and
installation.
(
)
Electrolytic
capacitors
for the
correct
position
of the
positive
(
+
) or
negative
(
-
)
leads.
This
completes
the
assembly
of the
T/R
circuit
board.
Set the
circuit
board
aside
and
proceed
to
"Chassis."
NOTE: If you
have the
HWA-9
Band
Pack
Accessory,
check
each of
the
parts
supplied
with that
kit against
the
Parts List.
Then
install the
parts on
the
oscillator
and
T/R circuit
boards as
directed
in those
Instruc-
tions (you
will
not
have to
perform
the
disassembly
instructions).
If
you do
not
have the
Accessory at
this
time, set
the
T/R circuit
board
aside
and proceed
directly to
"Chassis."

Heathkit HW-9 Specifications

General

Brand	Heathkit
Model	HW-9
Category	Transceiver
Language	English