Technics SU-V4X User Manual

TROUBLESHOOTING GUIDE
Before requesting service for this unit, check this table to deter¬
mine if the problem can be solved as described below. If the
problem still persists after making these checks, or if there are
symptoms of malfunction not described in this table, it is recom¬
mended that you consult the store where this unit was purchased
or your local Service Center (see list included) for further infor¬
mation and assistance.
Problem Probable cause(s)
Suggested remedy
Problems
noted
at
all
times
No sound Is heard when
the power Is turned on.
The power cord plug is not completely inserted. •Confirm that the power cord plug is connected
completely.
The power supply fuse has failed.
• Request the store where this unit was purchased, or
a Service Center, to replace the fuse.
Connections are incomplete or incorrect to the
speaker systems, etc.
• Check to be sure that all connection wires are
correctly connected.
The setting of the selectors has not been
completely or correctly made.
• Check to be sure that the selectors are set to the
correct position.
The speaker selectors are incorrectly set to the
"off" position.
• Set to the "on" position.
When listening to stereo
sound, the sound of
the various musical
instruments Is not heard
from its correct
position.
The positive (+) and negative (-) connections
of the speaker connection wires are reversed.
• Reconnect the speaker connection wires so that the
positive and negative connections are correct.
When listening to stereo
sound, the left and right
sounds are reversed.
The left and right connections of the speaker
connection wires are reversed.
• Check the speaker connection wires and connect
them correctly if necessary.
The left and right connections of the connec¬
tion wires connected to other equipment are
reversed.
• Check the connection wires to other equipment
and connect them correctly if necessary.
A low-pitched noise
("hum" or “buzz") Is
heard.
The power cord or a fluorescent light, etc.,
is near the connection wires.
•Try separating this unit from the electric appliance
as far as possible.
• Reverse the connection of the power cord plug.
The connection of the ground wire is incorrect
or incomplete.
•Check to be sure that the grounding connection is
correct.
• If the unit is not grounded, try doing so.
Sound Is not heard from
the speaker system on
one side.
The speaker connection wires are disconr
nected.
• Check and correct the connections of the speaker
connection wires.
The balance control is not set to the center
position.
• Set the mark on the balance control to the center
position.
The volume level for a
radio broadcast Is dif¬
ferent from that for
disc play.
The strength of the broadcast signal is not the
same as the output from the turntable.
• Adjust the volume level by using the volume control.
While listening, sound is
suddenly no longer
heard.
(Indication lamps of
other equipment are still
illuminated.)
The protection circuitry of the amplifier has
functioned.
• Check the connections to other equipment
(especially the speaker connection terminals, etc.),
and, if still no sound is heard, request service from
the store where the unit was purchased or from your
local Service Center.
During
disc
play
The sound lacks
clarity and volume.
The cartridge selector is incorrectly set to the
"MM" position when a moving-coil type
cartridge is being used.
•Set the catridge selector to the "MC” position.
The high-frequency
range cannot be
clearly heard.
The cartridge selector is incorrectly set to the
"MC” position when a moving-magnet type
catridge is being used.
•Set the catridge selector to the “MM" position.
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Technics SU-V4X Specifications

General

Brand	Technics
Model	SU-V4X
Category	Amplifier
Language	English