Panasonic SC-AK90 - 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 resolve 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 PASC Authorized Servicenters for detailed instruc­
tions or call 1-800-545-2672 for the address of an authorized factory
servicenter.)
Problem Probable cause(s) Suggested remedy
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.
(P 0
The iocation of the various
musicai instruments is not
weii defined.
The (-I-) and (—) connections to one of the speakers
are reversed. Connect the speaker cords correctly, ©
The ieft and right sounds
are reversed. The left and right connections to the speaker are
reversed. Connect the speaker cords correctly. ©
When iistening to the
external unit, the ieft and
right sounds are reversed.
The left and right connections to the external unit
are reversed. Connect the external unit's cord correctly. ©
Only one speaker is
emitting sound. One of the wires of the speaker cord is
disconnected. Connect the speaker cord correctly. ©
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, ©
“ERROR” message appears
on the dispiay.
Wrong operation has been done. Operate the unit correctly by following the
operating instructions.
“—:—” appears on the
dispiay
•You plugged the power cord in for the first time,
•There was a power failure recently. Set the time. ©
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While listenig 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. ©
You hear excessive noise
during a stereo broadcast,
and occasionaiiy the sound
disappears. The installation location and orientation of the
antenna are unsuitable.
The stereo indicator
(“STEREO”) fiickers and
does not iight compieteiy. 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 highiy
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.
o
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.