Quadraflex Reference 650FET R - Troubleshooting

Block
Diagram
Speaker A
Reminder
Get
into
the
habit
of turning
down the volume control
on
your
Reference:650FETR
when
you
turn
your
system on or
off.
This
eliminates the
possibility
of inadvertently
damaging
your
speakers if the
power
is
switched on with the volume
control
advanced.
Troubleshooting
Usually
problems
that
occur are
not
the fault of
your
Reference receiver
and are easily
cured.
lf
you
cannot solve
a
problem
in
the manner described
below, consult
your
Reference
dealer.
No
sound and the receiver
does
not light
up.
Make
sure the
Reference:650FETR
is
plugged
into
a
working
AC outlet
or extension cord. Check the AC line fuse
at the back
of the
receiver.
lf the fuse is
blown, replace it
only
with
the same
type.
A larger fuse
will create internal
damage to the
circuit. lf
the new fuse
blows again, consult
your
dealer.
The receiver
lights but
produces
no sound.
Make sure the fape Mon
lever is in
the Source
position.
Speakers switched on.lt
Overload light is
on, switch
power
off,
check all connections
and
wait 15
seconds_ before
turning on.
Make sure there is
adequate ventilation
to
prevent
overheating. lf
light
comes on again,
you
may have
a shorted speaker
or
section
of speaker wire.
No
sound
from
one channel.
Recheck
connections
and Balance control. lf
this occurs
only
with Phono
or a tape deck, switch
the L and R input leads. lf
the
sound then comes out
of
the
other channel,
you
can be certain
the
problem
is with
the source or its
cable and
not
your
receiver.
Poor bass response.
Check speaker
phasing
by switching to mono
and
back to
stereo.
lf
the bass is weaker in
mono, turn
off the
power
and
reverse
the
+ and
-
wires tor
one soeaker
onlv.
ilum sound.
Make sure
audio cable
plugs
are
inserted
firmly
and
that
the
phono ground
wire is
attached to the receiver.
Occasionally
removing
the
ground
wire will
eliminated hum.
Move receiver
away
from TV
set or fluorescent light.
Poor reception
Almost
always
the fault
of the antenna.
Dense urban
and
hilly
areas
present
a
greater
challenge
from
multipath
or
reflected
signals
like
those which cause
"ghosts"
with TV reception.
Your
dealer can
provide
assistance.
Cleaning.
Use a slightly damp cloth. Avoid
use of any
cleaners or
solvents; they might
scratch the
panel
or cloud the
dial
window.