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Troubleshoofinig 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.
(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.
Problem
I
Probable cause(s)
Suggested remedy
While listening to FM broadcasts
An unusual hissing noise is
heard when listening to the
broadcast in stereo, but not
heard when listening
tnonaurally.
A slight noise may be heard because the method
used for modulation of FM stereo broadcasts is
different from that used for monaural broadcasts.
• Try reducing the treble sound by using the treble
control.
(©)
• Try changing the location, height and/or direction
of the antenna.
(0 0)
• If an indoor antenna is being used, change to an
outdoor antenna.
(®)
• Try using an antenna with more elements.
Noise is excessive in both
stereo and monaural broad¬
casts.
Poor location and/or direction of the antenna.
Transmitting station is too far away.
The FM stereo indicator or
the quartz lock indicator
flickers, without completely
illuminating.
Poor location and/or direction of the antenna.
• Try changing the location, height and/or direction
of the antenna.
(0 (Ql)
• If an indoor antenna is being used, change to an
outdoor antenna.
(®)
•
Try using an antenna with more elements.
Transmitting station is too far away.
Excessive distortion in the
sound of stereo broadcasts.
Nearby building or mountain.
While listening to AM broadcasts
An unusual "beat" sound is
heard.
The unit is being used at the same time as the
television set.
• Turn off the television .set, or use this unit farther
away from it.
Interference from adjacent broadcast signal.
• Try reducing the treble sound by using the treble
control.
((D)
A low-pitched "hum" sound
is heard when the broad¬
cast is tuned.
The AM loop antenna connection wires are loo
close to the power cord.
• Place the antenna connection wires and the power
cord farther apart.
The power supply frequency from the power cord
is modulated and heard from the speakers.
• Install a special outdoor antenna. (®)
A strange hissing noise is
produced continuously or
intermittently.
Caused by the "discharge phenomenon" and the
"oscillation phenomenon" of electric appliances
(such as fluorescent lights, TV, small series-type
motors, rectification equipment, etc.).
• Try placing this unit farther away from such
equipment.
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.
No sound is heard.
The speaker indicator(s) is(are) turned off.
• Turn on the speaker indicator(s).
((D)
The tape monitor function is ON.
• Press the tape monitor button. ((D)
The muting function is ON.
• Press the muting button.
((D)
Connections are incomplete or incorrect to the
speaker systems, etc.
• Check to be sure that all connection wires are cor¬
rectly connected.
((D (D)
The incorrect input selector has been pressed.
• Check to be sure that the correct selector is
pressed.
{(D)
Sound stops during a per¬
formance, or no sound is
heard when the power is
switched ON.
(The word "OVERLOAD"
appears on the display.)
The protection circuitry has functioned because
the positive and negative speaker connection
wires are "shorted," speaker systems with an
impedance less than the indicated rated
impedance of this unit are used or under severe
use, such as loud volume, excessive power and in
an excessively hot environment.
• 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.
{(D)
27
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