Heathkit IM-16 - Final Assembly

Pusl
18
'
rt.*ryfl@l
METER- KNOBS.
BATTERY I NSTAL LAT ION
Refer to
Pictorial 12
(fold-out
fromPage
16)for
the
following
steps.
Meter lnstqllotion
NOTE:
There
may be
a
shorting
wire
between
the
terminals of
the meter.
If
so, remove
this
wire.
Then
check
for
tightness of
the hardware
on
the
meter
terminals.
If
either solder
lug
is
loose,
hold
the inner
nut with
a thin open-end
wrench or
long-nose
pliers
while
you
tighten
the
outer
nut.
Be
sure
the
terminal sirew
does
not
turn as
you
tighten
the nut.
(
)
Install
the meter
in
the frontpanelasshown
in
Detail 12A.
Use
the four lockwashers
and
nuts
that
are supplied
with
the meter.
Do
not overtighten
the nuts.
Connectthe
red and
the
black
wiresfrombreak'
out
#10 of
the cable
assembly
to the meter
as
follows:
(
)
Red to lug
1
(marked
+)
(S-1).
(
)
Black
to lug
2
(S-1).
Connect
the
blue
and the white
wires from
break-
out
#10 of
the
cable
assembly to the l-l/2 volt
battery
holder solder
lugs
as follows:
X
NOB
U5H
I NG
K NOB
BUSHING
(
)
Blue wire to the negative
(bottom)
solder lug
(s-1).
(
)
White
wire to
the
positive
(top)
solder lug
(s*1).
Knob lnstqllqtion
The
knobs supplied with
this
kit use
knob
bush-
ings that
provide permanent, positive gripping
without the
use
of
setscrews.
In the
following steps
you
will install
a lcrob
on
each
of
the two
controlshaJtsandthefour
switch
shafts
as
shown in
Pictorial
12 and
Detail 12B.
Perform
these
steps carefully,
as a
knob bush-
ing
is
very difficult
to
remove
from almob once
it
is
fully inserted,
Place
a
towel
or
soft cloth
on
your
work
surface
to avoid scratching
the
lmobs.
(
)
Locate thetwoplainlcaobs
(withoutpointers).
Place these lsxobs
on
a table
or other
hard
surface;
then
press
a lmobbushingintoeach
of
the
two larobs. Seethe right-handdrawing
in
Detail 12B.
(
)
Install
the
two
plain
hnobs
on
the
control
shafts at Ohms
Adjust
."and Zero Adjust,
LARGE
OPE
NING
Detqil
12A
Detqil
l28