Technics SU-V500 - Troubleshooting Common Issues; No Sound or Reversed Stereo Channels; Addressing Noise and Speaker Problems; Resolving Sound Interruption Issues

moedanente tui cer
Before
requesting
service
for
this
unit,
check
the
chart
below
for
minor
adjustment
on
your
part
may
eliminate
the
Problem
and
r
lf
you
are
in
daubt
about
some
of
the
check
Authorized
Service
Centers
(enc
Problem
Problems noted at
No sound Is heard when the
power Is switched ON,
points,
or
if
the
remedies
indicated
in
the
losed
with
this
unit)
to
locate
a
convenient
service
ce
Probable
cause(s)
ail times
The
power
cord
plug
is
not
compietely
inserted.
a
possible
cause
of
the
problem
you
are
ex;
estore
proper
operation.
periencing.
Some
simple
checks
or
a
chart
do
not
soive
the
Problem,
refer
to
the
directory
of
nter,
or
consult
your
Technics
dealer
for
instructions.
Suggested
remedy
*
Confirm
that
the
power
cord
Plug
is
connected
completely.
Connections
to
the
speakers,
etc.
are
incomplete
or
incorrect.
°
Check
to
be
sure
that
all
connection
wires
are
correctly
connected.
The
input
selector
setting
is
incorrect.
Check
to
be
sure
that
the
selection
of
the
desired
sound
source
is
made
correctly.
The
speaker
selector
is
set
incorrectly.
L? Set it to the correct position.
The
tape
monitor
function
is
on.
(TAPE
1
MONITOR
indicator
is
illuminated)
¢
When
listening
to
a
source
other
than
the
tape
deck
(TAPE
1),
press
TAPE
1
MONITOR
s0
that
the
Indicator
is
switched
off,
When
listening
to
stereo
sound,
the
sound
lacks
depth
(Le.
thin
bass,
tinny
sound).
One
of
the
speakers
is
connected
out
of
phase
(+)(-)
(-)
(+).
*
Reconnect
the
speakers
maintaining
proper
polarity
[e.,
(#)-(+),
(—)>(-)].
When tistening to stereo
sound, the left and right
sounds are reversed.
The
left
and
right
speaker
connections,
source
connections,
or
graphic
equalizer
connections
are
reversed.
4
©
Check
all
connections
and
correct
them
If
necessary,
A iow-pitched noise (“hum”
or “buzz") Is heard.
The
power
cord
or
a
fluorescent
light,
etc.,
is
near
the
connection
wires.
*
Try
separating
this
unit
as
far
as
possible
from
the
electric
appliance.
Sound Is net heard from
one of the speakers.
7
The
speaker
wires
are
disconnected.
*
Check
and
correct
the
connections
of
the
speaker
wires.
The
balance
control
is
set
too
far
to
one
side,
®
Set
so
that
sounds
are
heard
at
the
center,
between
the
speakers.
Sound stops during a
Performance, or no sound
is
heard
when
the
power
Is
switched ON,
The
protection
circuitry
has
functioned
because
the
positive
and
negative
speaker
connection
wires
are
“shorted”,
speakers
with
an
impedance
less
than
the
indicated
rated
impedance
of
the
amplifier
are
used.
*
Switch
OFF
the
power,
and,
after
determining
and
correcting
the
cause,
switch
ON
the
power
once
again.
*
Use
the
speakers
of
the
Proper
impedance
rating.
ae
-,
Matsushita
Electric
Industrial
Co.,
Ltd.
Central
P.O.
Box
288,
Printed In Japan
Osaka 530-91, Japan
RQT2378-B
H0394C0