Technics SC-CH404 User Manual

Troubleshooting guides
Before requesting service for this unit, check the chart below for a possible cause of the problem you are exoeriencino Som* ^ ^ ,
minor adjustment on your part may eliminate the problem and restore proper operation V P 9 ' Some S,mple checks or a
if yoi* are in doubt about some of the check points, or If the remedies indicated in the chart do not solve the oroblem refer m . <
uthori 2 ed Service Centers (enclosed with this unit) to locate a convenient service center, or consult your dealer ^instructions 0fy ° f
Problem
Probable cause(s)
Problems common to all systems
There Is no sound when the
power is ON.
The location of the various
musiacl instruments is not
well defined.
The left and right sounds
are reversed.
Only one speaker is
emitting sou nd.
There is no sound when a
source is being played.
“U-70” display appears on
the compact disc player or
tuner/sound processor
display.
Volume is set too low.
The (+) and (-) connections to one of the
speakers are reversed.
The left and right connections to the speaker are
reversed. _
The left and right connections to the each unit are
reversed. _
One of the wires of the speaker cord is
disconnected.
The (+) and (-) wire of the speaker cords are
shorted.
Flat cables are not connected steadily.
Suggested remedy
Adjust the volume level with the volume control on the
amplifier.
Connect the speaker cord correctly.
Connect the speaker cord correctly.
Connect the each unit 1 s cord correctly.
Connect the speaker cord correctly.
Switch the system to the standby mode, and
reconnect the speaker cords so that they are not
shorted. Then switch on the power.
Connect the flat cables steadily.
While listening to FM broadcasts
T here ,s a “rushing noise” pThe transmitting station is a long distance away.
There is a “rushing noise”
during a stereo broadcast
which is not audible during
a monaural broad cast.
You hear excessive noise
during a stereo broadcast,
and occasionally the sound
disappears. _
The stereo indicator flickers
and does not light
complete ly.
The sound during a stereo
broadcast is highly distored.
The installation location and orientation of the
antenna are unsuitable.
The transmitting station is a long distance away.
The power of the TV set or VCR i s ON.
There is a building or mountain nearby. [Distortion
is caused by interference between the signal from
the transmitting station {direct wave) and the
signal reflected from the building or mountain
(reflected wave).]
While listening to LW/MW broadcasts
You hear an unusual beat
sound.
You hear a low-frequency
hum.
You are using the system at the same time you
are playing a TV se t.
The antenna wire is near the power cord.
• If you are using an indoor antenna, change to an
outdoor antena.
• If you are using a high-grade outdoor antenna, try
changing the installation location, height and
orientation.
Try switching off the TV set or VCR .
Use a high-grade outdoor antenna, and install it in a
good location, height and orientation for reception.
Switch off the TV set, or use the system farther away
from It.
Separate the antenna wire from the power cord.
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Technics SC-CH404 Specifications

General

Brand	Technics
Model	SC-CH404
Category	Stereo System
Language	English