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PART II
-MAKING
REPLACEMENTS
(I)
REPLACING ANTENNA COIL
The following procedure should
be
used
when
replacing
the
antenna
coil:
(a)
Remove
five
screws
holding
wooden
back panel to cabinet.
(b)
Remove knobs
on
"Station
Selector" and
"Volume
control."
(c)
Unscrew threaded round collar from
front
of
battery
switch.
(d)
Remove
four
screws
holding chassis
in
place to bottom
of
cabinet.
Figure
8-Removing
chassis assembly from cabinet
The
chassis assembly may
now be
removed by slightly rocking
it
in the
cabinet and
slipping it out
of
the
rear
opening.
See
Figure
8.
This brings the
complete chassis into
view,
allowing an easy examination of all
parts.
The antenna
coil
is
located at the left
end viewed
from the
rear
of the
cabinet-the
end
that
has the condenser drum and scale.
See
Figure
9.
To
remove the coil
unsolder
the
two
leads and remove screw and
nut that
passes
through
center of
coil.
The
new
coil is
then placed
in
the
position occupied
by the old one.
The nut
and screw are replaced
and the Radiola
is
reassembled
in
the reverse
of
the foregoing order. Before being replaced
in
the cabinet it should
be
given an
operating
test.
(2)
REPLACING RADIO FREQUENCY COILS
The three radio frequency
transformers together
with a
mounting strip and
two
pin
jacks are
stocked as
one
complete
unit.
A
step by step
procedure for replacing this
assembly
is
as follows:
1.
Remove chassis from
cabinet as described
in
Part II,
Section
1.
2.
Unsolder and carefully
tag
all connections to the three
transformers
and the
two
pin jacks.
16
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