Eico HF-20 - Page 19

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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
MAKETHE
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.