Beforerequestingservicefor this unit, check the chart below for a
poss_le 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 MSC Authorized Servicenters for detailed
instructions or call 1-800-545-2672 for the address of an authorized
factory servicenter.)
Reference pages indicated in blackcircle. (For example: O)
i Problem ! Probable cause(s)
Su99ested remedy
Problems noted at all times
NO sound is heard when the The power cord plug is not completely inserted. • Confirm that the power cord plug is connected
power is switched ON. completely. ".........
Connections are incomplete or incorrect to the • Check to be sure that all connection wires are
speaker systems, etc. correctly connected.
The incorrect input selector of the amplifier has • Check to be sure that the correct selector is
been pressed, pressed.
The speaker selector is set incorrectly. • Set it to the correct position. O O O
The input selector of the graphic equalizer is not • Set to the "SOURCE" position. _ O
set to the "SOURCE" position.
When listening to stereo One of the speakers is connected out of phase [(+) • Reconnect the speakers maintaining proper
sound, the sound lacks -* (-), (-) -* (+)]. polarity [i.e., (+) --- (+), (-) -* (-)].
depth (i.e. thin bess, tinny
sound).
When listening to stereo The left and right speaker connections, or source • Check all connections and correct them if
sound, the left and right connections, are reversed, necessary. ,
sounds are reversed.
A low-pitched noise ("hum" The power cord or a fluorescent light, etc., is near • Try separating this unit asfar aspossible from the
or "buzz") is heard, the connection wires, electric appliance.
Sound is not heard from The speaker wires are disconnected. • Check and correct the connections of the speaker
one of the speaker symms, wires.
The balance control is set too far to one side. • Set so that sounds are heard at the center, between
the speaker systems. •
Sound stops during a The volume level is excessively increased. • Decrease the volume level.
performance, or no sound The protection circuitry has functioned because • Switch OFF the power, and, after determining and
is heard when the power is
the positive and negative speaker connection correcting the cause, switch ON the power once
switched ON. wires are "shorted" or speaker systems with an again.
impedm3ce less than the indicated rated • Use a speaker system of the proper impedance
impedance of the amplifier are used. rating.
While listening to radio broadcasts
A strange hissing noise is Caused by the "discharge phenomenon" and the • Try placing this unit farther away from such
produced continuously or "oscillation phenomenon" of electric appliances equipment.
intermittently. (such as fluorescent lights, TV, small series-type • Install noise-prevention equipment on this unit or
motors, rectification equipment, etc.), on the electric appliance.
While listening to AM broadcasts
An unusual "beat" sound is Unit is being used at the same time as the 4 Switch OFF Be television set, or use this unit
heard. ... televisio_ set. farther away from it. _ _.-o
A low-pitched "hum" sound The AM loop antenna connection wires are too • Place the antenna connection wires and the power
4.
is heard when the closeto 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.
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