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Use
the
knobs with
the
short
shanks
If
the amplifier
is
not
to
be
installed In
aeon-
sole.
Theknobs
with
the
longshanks are
to
be
usedlf the
amplifier
is
installed
in
a
console.
In
the
latter
case, the
knobs
areflnally
placedonthe
shafts
only
after
console
Installation
is
completed. See
INSTALLATION
in
the
Instruction
section.
6)
IMPORTANT:
BE
SURE
TO MAKE
THE
FOLLOWING
RESISTANCECHECKS
BEFORE
CONNECTING
TO THE AC
LINE:
Checkforacold
dc
resistance
of
3
ohms
across the
AC
plug with the
AC
power
switch turned on;
check
for
a
resistance
of at
least
70ohms between
ground
and
pins
4
and 6
of
XV7;
check
for
a
resistance
of at
least
70K
ohms between
the
positive terminal of
each
section of the multi-section
electrolytic capacitors,
C26
and
C27
to
ground.
Allow
sufficient
time
for
the electrolytic capacitors to
be
.charged
by
the
ohm-
meter
battery
when
they are involved
In
the
measurements.
These measure-
ments
constitute
a
reasonable
check
of the
power
supply
components and wir-
ing before
applying power.
If
you
fall
to
obtain these
resistance values,
do
not
connect
the instrument
to
the
ac
line until
the
cause
is
dlscoveredand
the
condition remedied.
7)
OPERATIONAL CHECKS
ON
COMPLETED
KITS:
In
the
Instruction part
of
this
manual, you
will find
a
sub-section
In
the
Installation
section
titled
"Electrical
Connections"
•
Read
this
carefully
and connect
your speaker,
phonograph,
and
tuner
to
the amplifier
in
accordance with
the
instructions
given.
Then
read the
section
titled
tt
OperatIng
Instructions"
and
operate
all
the controls,
checking
aurallyfor the
results
described.
If
the amplifier
does
not operate at
all
or operates incorrectly, use the trouble shooting chart
and
the
Voltage and
Resistance chart to discover
and remedy
the
difficulty.
As
the Trouble
Shooting
chart
presumes
a
properly
wired
amplifier,
which
may
not
be
the case,
recheck
the wiring
for errors
or reversed
connections
and
continuity.
8) Press
a speed
nut
in
place over
each
hole on
the
bottom
flange of the
chassis
(see Fig.
8).
9)
If
the amplifier
ts
not
to
be
Installed In
a
console.
Insert
the rubber feet
In
the
openings provided
in
the
bottom
plate.
Whether
the amplifier
Is
to
be
Installed in
a
console or
not,
mount
the bottom plate
on
the
chassis,
using
4
*8~32X3/B"
on
the
front
and
rear flanges
and4
^8*32X1"
on
the side flanges.
(It is
essential
that the
bottom
plate
be mounted on
the amplifier at the
start
and
during the process of console
installation
described
In
the
Instruction
sec-
tion, until
that point
In
the
installation
procedure
where
It
is
Instructed to
remove
the
bottom
plate temporarily
for
use
as
a
template.)
10)
Installation, electrical
connections,
and
operation
will
be
found
in
the
Instruction
section of
this
manual
.
Precede
to
the
Instruction
section at
this
point.
SERVICE
If
you
are
still
having
difficulty,
write
to
our service
department
listing all
possible Indications that
might
be
helpful.
If
desired,
you
may
return the in-
strument
to
our
factory
whereit
will
be
placed
in
operating condition
for
$9
.50
plus
the cost of
parts
replaced
due
to
their
being
damaged
in
the course of
construction. This service
policy applies only
to
completed
Instruments
con-
structed in
accordance with
the
Instructions as stated In
the
manual.
Instru-
ments
that
are not
completed
or Instruments that
are modified
will
not
be ac-
cepted
for repair.
Instruments that
show
evidence
of acid core solder
or paste
fluxes will
be
returned not repaired.
NOTE:
Before returning
this
unit,
be
sure
all
parts
are securely
mounted.
Attach
a
tag
to
the Instrument, giving
your
home
address
and
the trouble
with
the
unit.
Pack very
carefully
in
a
rugged container,
using sufficient
packing
material (cotton,
shredded
news-
paper, or
excelsior), to
make
the unit
completely
Immovable
within the
con-
tainer.
The
original
shipping carton
Is
satisfactory,
providing the
original
Inserts
are used or
sufficient
packing
material
ts
inserted to
keep
the
Instru-
ment immovable.
Ship
by
prepaid
Railway
Express,
if
possible, to the
Elec-
tronic
Instrument
Co.
,
Inc.,
33
"*00
Northern
Blvd.,
L.I.C.
1,
New
York. Re-
turn
shipment
will
be
made
by
express collect.
Note
that
the
carrier
cannot be
held
liable
fordamages
in transit
if
packing,
IN
HIS
OPINION,
is
insufficient.
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