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Heathkit SB-201 - Page 43

Heathkit SB-201
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Page
42
Ge
QuEearHKIT?
INITIAL
TEST
The
input
coils
are
factory
adjusted
and
do
not
require
any
further
alignment.
RESISTANCE
CHECK
(‘>
The
resistance
between
either
anode
clip
and
the
chassis
should
measure
approximately
180
kQ
after
the
meter
stabilizes.
The
resistance
between
lug
3
of
either
tube
socket
V1
or
V2
and
the
chassis
should
measure
between
5000
0
and
15,000
2.
If
you
encounter
any
difficulty
in
obtaining
either
of
these
resistance
readings,
refer
to
the
In
Case
Of
Diffi-
culty
section
of
the
manual
on
Page
50.
CAUTION:
LETHAL
VOLTAGES
ARE
PRESENT
IN
THIS
UNIT.
USE
EXTREME
CARE
WHEN
MAKING
ANY
TESTS.
If
at
any
time
during
the
testing
and
operation
the
Linear
Amplifier
does
not
perform
as
described,
un-
plug
the
Linear
Amplifier
line
cord
and
refer
to
the
In
Case
Of
Difficulty
section
of
the
manual.
()
Rotate
all
knobs
to
their
fully
counterclockwise
positions,
except
the
TUNE
knob
which
should
be
at
its
9
o’clock
position.
Place
the
OF
F-ON
switch
in
the
OFF
position.
Plug
the
line
cord
plug
into
the
power
source
for
which
the
unit
is
wired,
either
120
volts
or
240
volts
AC.
Push
the
OFF-ON
switch
to
ON.
Check
to
see
that
the
tube
filaments
and
meter
pilot
lamp
light,
and
that
the
fan
operates.
Rotate
the
meter
switch
through
all
of
its
posi-
tions.
There
should
not
be
a
meter
indication
in
any
position,
except
for
HV
which
should
read
approximately
2400
volts.
Push
the
OFF-ON
switch
to
OFF
and
unplug
the
line
cord.
To
insure
the
discharge
of
the
filter
capacitors
and
reduce
the
shock
hazard,
short
the
anode
clip
of
one
of
the
tubes
to
the
chassis,
using
a
-
screwdriver
with
an
insulated
handle.
FINAL
ASSEMBLY
Refer
to
Pictorial
16
for
the
following
steps.
Install
the
top
plate,
using
#6
x
3/8"
sheet
metal
screws.
Rey
Remove
the
protective
backing
from
a
DANGER
label
and
press
it
firmly
in
place
on
the
top
plate,
as
shown.
(4
J
Slide
the
chassis
into
the
cabinet.
J
Install
rubber
feet
at
the
rear
of
the
cabinet,
using
6-32
x
3/4”
screws
and
3/8”
flat
steel
washer.
Install
rubber
feet
and
tapered
spacers
at
the
front
of
the
cabinet,
using
6-32
x
1-1/2”
screws
and
3/8”
flat
steel
washers.
NOTE:
If
you
wish
to
have
the
Linear
Amplifier
set
flat,
extra
6-32
x
3/4”
screws
are
supplied
for
mounting
feet
at
the
front
only.
f

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