Technics SA-EX320 Operating Instructions

Troubleshooting guide |
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Before
requesting
service
for
this
unit,
check
the
chart
below
for
a
If
you
are
in
doubt about
some
of
the
check
points,
or
if
the
possible
cause
of
the
problem
you
are
experiencing.
Some
simple
remedies
indicated
in
the
chart
do
not
solve
the
problem,
refer
to
checks
or
a
minor
adjustment
on
your
part
may
eliminate
the
the
directory
of
Authorized
Service
Centers
(enclosed
with
this
unit)
problem
and
restore
proper
operation.
to
locate
a
convenient
service
center,
or
consult
your
Technics
deal-
er for instructions.
(In U.S.A. consult PASC Authorized Servicenters for detailed
instructions or call 1-800-545-2672 for the address of an authorized
factory servicenter.)
Reference pages indicated in black circles. (For example: ©)
Probable cause(s) Suggested remedy
While listening to FM broadcasts
An unusual hissing noise is | A slight noise may be heard because the method e Try reducing the treble sound by using the treble
heard when listening to the used for modulation of FM stereo broadcasts is control. (Ф)
broadcast іп stereo, but пої | different than that used for monaural broadcasts. e Try changing the location, height and/or direction
heard when listening of the antenna. (@ @)
monaurally. e If an indoor antenna is being used, change to an
Noise is excessive in both Poor location and/or direction of the antenna. outdoor antenna. (@) |
e Try using an antenna with more elements.
Stereo dnd monauraPSroxee Transmitting station is too far away.
casts.
The FM stereo indicator or Poor location and/or direction of the antenna. e Try changing the location, height and/or direction
the quartz lock indicator mis eun of the antenna. (Ө 0)
:
Transmitting
station
is
too
far
away.
: я ,
flickers, without completely
і
ng
ià ы
e
If
an
indoor
antenna
is
being
used, change
to
an
illuminating.
outdoor
antenna.
(@)
Excessive
distortion
in
the
Nearby
building
or
mountain.
e
Try
using
an
antenna
with
more
elements.
sound
of
stereo
broadcasts.
While
listening
to
AM
broadcasts
Unit is being used at the same time as the e Turn off the television set, or use this unit farther
television set. away from it.
An unusual “beat” sound is
heard.
Interference from adjacent broadcast signal. e Try reducing the treble sound by using the treble
control. (Ф)
The AM loop antenna connection wires are too e Place the antenna connection wires and the power
close to the power cord. cord farther apart
The power supply frequency from the power cord e Install a special outdoor antenna. (@)
is modulated and heard from the speakers.
Caused by the “discharge phenomenon” and the e Try placing this unit farther away from such equip-
"oscillation phenomenon" of electric appliances ment.
(such as fluorescent lights, TV, small series-type
motors, rectification equipment, etc.).
Common Problems
Power
will
not
switch
ON.
The
power
cord
plug
is
not
completely
inserted.
e
Confirm
that
the
power
cord
plug
is
connected
completely.
No sound is heard. The speaker indicator is turned off. e Turn on the speaker indicator. ((B)
The tape monitor function is ON. e Press the tape monitor button. ((B)
The muting function is ON. e Press the muting button. (Ф)
Connections are incomplete or incorrect to the • Check that all connection wires are correctly con-
speaker systems, etc.
nected. (Ф (D)
The incorrect input selector has been pressed. e Check that the correct selector is pressed. (®)
A low-pitched "hum" sound
is heard when the station is
tuned.
A strange hissing noise is
produced continuously or
intermittently.
e Switch off the power, and after determining and
correcting the cause, switch on the power once
again.
e Use a speaker system of the proper impedance
rating. (D (D)
The protection circuitry has functioned because
the positive and negative speaker connection
wires have "shorted," speaker systems with an
impedance less than the indicated rated
impedance of this unit have been used or under
severe use, such excessive volume, excessive
power and in an excessively hot environment.
Sound stops during a per-
formance, or no sound is
heard when the power is
switched ON.
(The word “OVERLOAD”
appears on the display.)
Reference m

Technics SA-EX320 Specifications

General

Tuning Range	FM, MW
Total Harmonic Distortion	0.08%
Signal to Noise Ratio	80 dB (MM)
Speaker Load Impedance	8Ω to 16Ω
Input Sensitivity/Impedance	2.5mV/47kΩ (MM)
Speaker Impedance	6 Ω - 16 Ω