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Troubleshooting Guide
Before requesting service for this unit, check the chart below for a possible cause of the problem you are experiencing. Some simple checks or
a minor adjustment on your part may eliminate the problem and restore proper operation.
If you are in doubt about some of the check points, or if the remedies indicated in the chart do not solve.the problem, refer to the directory of
Authorized Service Centers (enclosed with this unit) to locate a convenient service center, or consult your Technics dealer for instructions.
Probable cause(s)
Suggested remedy
An unusual hissing noise is
heard when listening to the
broadcast in stereo, but not
heard when listening
monaurally.
A slight noise may be heard because the method
used for modulation of FM stereo broadcasts is
different than that used for monaural broadcasts.
stereo and monaural
broadcasts.
Noise is excessive in both
Poor location and/or direction of the antenna.
'Transmitting station is too far away.
While listening to FM broadcasts
e Try reducing the treble sound by using the
frequency leve/treble control.
¢ Set the FM mode selector to the monaural position.
(Note that the broadcast will then be heard as
monaural sound.)
e Try changing the location, height and/or direction of
the antenna.
e If an indoor antenna is being used, change to an
outdoor antenna.
¢ Try using an antenna with more elements.
The FM stereo indicator or
the quartz lock indicator
flickers, without completely
illuminating.
Poor location and/or direction of the antenna.
Transmitting station is too far away.
Excessive distortion in the
sound of stereo broadcasts.
An unusual "beat" sound is
heard.
Nearby building or mountain.
(Multipath distortion is being caused by the mutual
interference of broadcast signals received directly
from the transmitting station (direct waves) and
signals being reflected from nearby buildings or
mountains (reflected waves).]
Unit is being used at the same time as the
television set.
Interference from adjacent broadcast signal.
¢ Try changing the location, height and/or direction of
the antenna.
¢ lf an indoor antenna is being used, change to an
outdoor antenna.
¢ Try using an antenna with more elements.
While listening to AM broadcasts
e Turn off the television set, or use this unit farther
away from it.
e Try reducing the treble sound by using the
frequency leve/trebie control.
A low-pitched "hum" sound
is heard when the
broadcast is tuned.
A strange hissing noise is
produced continuously or
intermittently.
Problems noted at
No sound is heard when the
power is switched ON.
The AM loop antenna connection wires are too
close to the power cord.
The power supply frequency from the power cord
is modulated and heard from the speakers.
¢ Place the antenna connection wires and the power
cord farther apart.
* Install a special outdoor antenna.
Caused by the "discharge phenomenon" and the
"oscillation phenomenon" of electric appliances
(such as fluorescent lights, TV, small series-type
motors, rectification equipment, etc.).
all times
The power cord plug is not completely inserted.
¢ Try placing this unit farther away from such
equipment.
¢ Install noise-prevention equipment on this unit or on
the electric appliance.
© Confirm that the power cord plug is connected
completely.
Connections are incomplete or incorrect to the
speaker systems, etc.
¢ Check to be sure that all connection wires are
correctly connected.
The incorrect input selector has been pressed.
© Check to be sure that the correct selector is
pressed.
[ The speaker selectors are incorrectly set to the
"OFF" position.
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" or speaker systems with an
impedance less than the indicated rated
impedance of this unit are used.
¢ Set to the "ON" position.
¢ 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 inpedance
rating.
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