Panasonic SC-AK20 Operating Instructions Manual page 34

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.
(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.)
Problem
Probable cause(s) Suggested remedy
Reference
page(s)
Problems common to all systems
There is no sound when the
power is ON.
Volume is set too low. Adjust the volume level with the volume
control.
11, 13, 18
The location of the various
musical instruments is not
well defined.
The {-(-) and (-) connections to one of the
speakers are reversed.
Connect the speaker cords 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
When listening to the external
unit, the left and right sounds
are reversed.
The left and right connections to the
external unit are reversed.
Connect the external unit's cord correctly.
7
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 (-I-) 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.
: --" appears on the
display
• Y)u plugged the power cord in for the
first time.
• There was a power failure recently.
Set the time.
9
While 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.
If you are using an indoor antenna, change
to an outdoor antenna.
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
("STEREO") flickers and does
not light completely.
The transmitting station is a long distance.
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 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.