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Before requeshng serv}ce for thts umt, check the chart below for
a possible cause of the problem you are experiencing.
Some sim-
ple checks or a minor adjustment
on your part may eliminate the
problem
and restore proper operation.
If you are m doubt about some of the check points, or if the
remedies indicated in the chart do not solve the problem, refer to
I
Problem
[
Probable causels)
the dnrectory of authorized service centers (enclosed with this
unut) to locate a convenient service center, or consult your
Technics dealer for instructions.
(in U.S.A. consult MSC Authorized Servicenters for detailed in-
structions.)
Suggested remedy
I
While listening
to FM broadcasts
An unusual hissing noise is
heard when listening to the
broadcast
In stereo, but not
heard when listening
monaurally.
Noise is excessive
in both
stereo and monaural
broad-
casts.
The FM stereo Indicator
or
the quartz lock indicator
flickers, without completely
illuminating.
Excessive distortion
In the
sound of stereo broad-
casts.
A slight noise may be heard because
the method
used for modulation
of FM stereo broadcasts
is
different
than that used for monaural
broadcasts.
Poor locationandlor directionof the antenna.
Transmittingstationis too far away.
Poor location andlor direction of the antenna.
Transmitting station is too far away.
Nearby building or mountain.
• Try reducing the treble sound by using the treble con-
trol.
• Try changing the location, height andlor direction
of
the antenna.
• If an indoor antenna is being used, change to an
outdoor antenna.
• Try using an antenna with more elements.
• Try changingthe location, height and/or directionof
the antenna.
• If an indoorantenna is beingused, change to an
outdoorantenna.
• Try usingan antenna with more elements.
While
listening
to AM broadcasts
An unusual "beat"
sound Is
Unit is being used at the same time as the
• Turn off the television set, or use this unit farther
heard,
television set.
away from it.
Interference from adjacent broadcast signal.
• Try reducing the treble sound by using the treble con-
trol.
A low.pitched
"hum"
sound
The AM loop antenna connection wires are too
• Place the antenna connection wires and the power
Is heard when the
close to the power cord.
cord farther apart.
broadcast
is tuned.
The power supply frequency from the power cord
• Install a special outdoor antenna.
is modulated and heard from the speakers.
A strange hissing noise Is
Caused by the "discharge
phenomenon" and the
• Try placing this unit farther away from such equip-
produced
continuously
or
"oscillation
phenomenon" of electric appliances
ment.
intermittently.
(such as fluorescent
lights, TV, small series-type
• Install noise-prevention equipment on this unit or on
motors, rectification equipment, etc.),
the electric appliance.
Problems
noted at all times
Power will not switch ON.
The power cord plug is not completely inserted.
• Confirm that the power cord plug is connected
completely.
Sound stops during a
performance,
or no sound
Is heard when the power Is
switched ON.
(The word "OVERLOAD"
appears on the display.)
The DOLBY PRO LOGIC
(SURROUND
or 3 STEREO)
indicator
and speaker
select indicators
(_
[]
)
are flashing.
(The word "ERROR"
appears on the display.)
The tape monitor function is ON.
The muting function is ON.
Connections are incomplete or incorrect to the
speaker systems, etc.
The incorrect input selector has been pressed.
The protectioncircuitry has functionedbecause
the positiveand negative speakerconnection
wires are "shorted", speaker_systems with an
impedance lessthan the indicated rated
Impedance of this unit are usedor undersevere
use, such as loudvolume,excessivepower andin
an excessivelyhot environment.
When the DolbyPro Logic systemIs ON, bothA
and B speakers are turnd ON.
When both A and B speakersare beingused
simultaneously, t he Dolby Pro Logicsystemis
turned ON.
you wish to listen and press it one or two times. (The
display will scroll through the causes of the problem.)
Use this display as a guide to remedy the problem.
• Check to be sure that all connection wires are
Correctly connected.
• Check to be sure that the correct selector is
pressed.
• Switch off the power, and after determining and
correcting the cause, switch on the power once
again.
• Use a speaker system of the proper Impedance
rating.
• Turn off the Dolby Pro Logic system or one of the
speakers.
• Turn off one of the speakers.
2?
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