Stereo Receiver User's Manual

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, heightand/or directionof
the antenna.
• If an indoorantennais beingused,change to an
outdoorantenna.
• Try usingan antenna withmore 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 protectioncircuitryhas functionedbecause
the positiveand negativespeakerconnection
wires are "shorted", speaker_systemswith an
impedancelessthan the indicatedrated
Impedanceof this unitare usedor undersevere
use,such asloudvolume,excessivepower andin
an excessivelyhot environment.
Whenthe DolbyPro Logic systemIs ON, bothA
and B speakersare turnd ON.
Whenboth A and B speakersare beingused
simultaneously,the Dolby Pro Logicsystemis
turnedON.
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?