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Heathkit TA-16 - Page 11

Heathkit TA-16
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Page
10
o
BOTTOM
OF
CHASSIS
o
o
ee
re
--
1
•
...`Mpowel.ékeMei,IEMEMeMeeeelne"
PICTORIAL
6
CHASSIS
PARTS
MOUNTING
As
you
mount
a
part
on
the
chassis
or
front
panel,
use
the
hardware
specified
in
the
step
and
position
the
part as
shown
in
the
Pictorial.
The
step
will
call
out
only
the
size
and
type
of
hardware
to
use.
For
example
"Use
6-32
x3/8"
hardware"
means
to
use
a
6-32
x
3/8"
screw,
one
or
more
#6
lockwashers,
and
a
6-32
nut.
Lockwashers
will
be
used
under
all
nuts
when
you
are
mounting
parts.
Refer
to
the
Details
for
the
proper
number
of
lockwashers
and
positioning
of
hardware.
Read
each
step
completely
before
you
perform
the
operation
directed
in
the
step.
The
plastic
nut
starter
(#490-5)
will
help
you
pick
up
a
nut
and
start
it
on
the
threads
of
a
screw.
Be
sure
to
tighten the
hardware
with
a
screwdriver
after
you
mount
a
part.
Refer
to
Pictorial
6
for
the
following
steps.
(.4
Position
the
chassis
as
shown
in
the
Pic-
torial.
(
Install
a
5/16"
rubber
grommet
at
D.
Refer
to
Detail
6A,
and
install
1/2"
plastic
grommets
at
F
and
M.
Install
the
grommets
from
the
top
side
of
the
chassis.
PLASTIC
GROMMET
TOP
OF
CHASSIS
Detail
6A
BEND OVER
AND
FIRMLY
PRESS
IN
PLACE
)
Install
a
3/8"
plastic
grommet
from
the
top
of
the
chassis
at
L.
( )
Refer
to
Detail 6B,
and
install
the
double
phono
socket
and
double
phono
socket
insu-
lator
at
E.
Use
6-32
x
3/8"
hardware.
NOTE:
The
purpose
of
the silicone
grease
that
is
used
on
the
mica
insulators
in
the
following
two
steps
is
to
help
conduct
the
heat
of
the
tran-
sistor
to
the
chassis.
This
grease
should
be
applied
in
a
thin
even
coating
which
completely
covers
both
sides
of
the
insulator.
6-32
NUT
LOCKWASHER
DOUBLE
PHONO
SOCKET
INSULATOR
6-32x3/8
SCREW
Detail
6B
CAUTION:
Be
very
careful
to
install
the
tran-
sistors
at
the
proper
locations
in
the
next
two
steps.
If
the
locations
are
reversed,
the
tran-
sistors
will
be
damaged
when
the
Amplifier
is
turned
on.
(./)
Mount
the
2N2148/417-99
transistor,
a
rnica
insulator,
and
transistor
socket
at
Q9,
as
shown
in
Detail
6C.
Apply
a
thin
film
of
silicone
grease
to
both
sides
of
the
mica
insulator,
and
place
the insulator
between
the
transistor
and
the
chassis.
NOTE:
Use
two
6-32
x
3/8"
screws
to
mount
the
tran-
sistor
and
socket.
Be
sure
the
shoulders
of
the
transistor
socket
are
seated
in
the
mounting
holes
in
the
chassis.
BOTTOM
OF
CHASSIS
APPLY
THIN
FILM
OF
GREASE
INSET
TRANSISTOR
SOCKET
ese,\TAB
Detail
6C
MICA
INSULATOR
TRANSISTOR
6-32x3/8"
SCREW

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