Panasonic SC-CH75 - Manual (Page 38)

Troubleshooting 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 dealer for instructions.
Problem Probable cause(s) Suggested remedy
Reference
page(s)
Problems common to all systems
The location of the various
musical instruments is not
well defined.
The {+) and (-) connections to one of the
speakers are reversed.
Connect the speaker cord correctly.
6
The left and right sounds
are reversed.
The left and right connections to the
speaker are reversed. Connect the speaker cords correctly.
6
Humming is heard while
playing.
A power cord or fluorescent lamp is located
in the vicinity of cables.
Keep electric appliances away from the
stereo. Try plugging the cord in, the other
way.
Only one speaker is
emitting sound. One of the wires of the speaker cord is
disconnected. Connect the speaker cord correctly.
6
There is no sound when a
source is being played.
The (+) and {-) wire of the speaker cords
are shorted.
Switch the system to the standby mode,
and reconnect the speaker cords so that
they are not shorted. Then switch on the
power.
6
“ERROR” message appears
on the display. Wrong operation has been done. Operate the unit correctly by following the
operating instructions.
White listening to FM broadcasts
There is a “rushing noise”
during a stereo broadcast
which is not audible during
a monaural broadcast.
The transmitting station is a long distance
away. • If you are using an indoor antenna,
change to an outdoor antenna.
• If you are using a high-grade outdoor
antenna, try changing the installation
location, height, and orientation.
7
You hear excessive noise
during a stereo broadcast,
and occasionally the sound
disappears.
The installation location and orientation of
the antenna are unsuitable.
The stereo indicator
flickers and does not light
completely.
The transmitting station is a long distance
away.
The power of the TV set or VCR is ON. Try switching off the TV set or VCR.
The sound during a stereo
broadcast is highly
distorted.
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),]
Use a high-grade outdoor antenna, and
install it in a good location, height, and
orientation for reception.
7
While listening to LW/MW (AM) broadcasts
You hear an unusual beat
sound. You are using the system at the same time
you are playing a TV set. Switch off the TV set, or use the system
further away from it.
You hear a low-frequency
hum. The antenna wire is near the power cord. Separate the antenna wire from the power
cord.
6
When there is a television set nearby
The picture on the TV
disappears or stripes,
appear on the screen.
The Iqpation and orientation of the antenna
are incorrect.
If you are using an indoor antenna, change
to an, outdoor antenna.
7
The wiring at the back of the system is
unsuitable.
Separate the antenna wire of the TV set
from the system.