Troubleshooting - Panasonic SC-AKX75 Owner's Manual

Troubleshooting

Before requesting service, make the following checks. If
you are in doubt about some of the check points, or if the
solutions indicated do not solve the problem, refer to
"Customer Services Directory (United States and Puerto
Rico)" on page 19.
Common problems
The display panel lights up and changes
continuously in standby mode.
• Press and hold [8] on the main unit to select
"DEMO OFF".
No operations can be done with the remote control.
• Examine that the battery is installed correctly.
Sound is distorted or no sound.
• Adjust the volume of the system.
• Switch off the system, determine and correct the
cause, then switch the system on again. It can be
caused by straining of the speakers through excessive
volume or power, and when using the system in a hot
environment.
A humming sound can be heard during playback.
• An AC power supply cord or fluorescent light is near
the cables. Keep other appliances and cords away
from the cables of this system.
The sound level reduces.
• The protection circuit has been activated due to the
continuous use at high volume output. This is to protect
the system and maintain the sound quality.
Disc
Display not shown correctly.
Playback does not start.
• You have not put in the disc correctly. Put it in correctly.
• Disc is dirty. Clean the disc.
• Replace the disc if it is scratched, warped, or
non-standard.
• There is condensation. Let the system dry for 1 to 2
hours.
12
The total number of tracks displayed is incorrect.
The disc cannot be read.
Distorted sound is heard.
• You put in a disc that the system cannot play. Change
to a playable disc.
• You put in a disc that has not been finalized.
Radio
Sound is distorted.
• Use an optional FM outdoor antenna. The antenna
should be installed by a competent technician.
A beat sound is heard.
• Switch off the TV or move it away from the system.
• When in AM tuner mode, select from "BP 1" to "BP 8"
that provides the best reception.
A low hum is heard during AM broadcasts.
• Move the antenna away from other cables and cords.
USB
The USB device or the contents in it cannot be read.
• The format of the USB device or the contents in it is/are
not compatible with the system.
• USB devices with storage capacity of more than 32 GB
cannot work in some conditions.
Slow operation of the USB device.
• Large content size or large memory USB device takes
longer time to read.
Main unit displays
"AC LOW"
• The household AC power supply is fluctuating. The
sound level of the system will reduce gradually to
protect the system.
"ERROR"
• An incorrect operation was done. Read the instructions
and try again.
"F61"
• Examine and correct the speaker cords connection.
• Disconnect the USB device. Switch off the system and
then switch it on again.
"NODEVICE"
• The USB device is not connected. Examine the
connection.
"NO PLAY"
"UNSUPPORT"
• Examine the content. You can only play supported
format.
• The files in the USB device can be corrupted. Format
the USB device and try again.
"NO TRACK"
• There is no album or track in the USB device.
"NOT MP3 = ERROR"
• You played an unsupported MP3 file. The system will
skip that track and play the next one.
"PLAYERROR"
• You played an unsupported MP3 file. The system will
skip that track and play the next one.
"REMOTE 1" or "REMOTE 2"
• The remote control and the main unit are using
different codes. Change the code of the remote
control.
– When "REMOTE 1" is shown, press and hold [OK]
and [1] for a minimum of 4 seconds.
– When "REMOTE 2" is shown, press and hold [OK]
and [2] for a minimum of 4 seconds.
"TEMP NG"
• The temperature protection circuit has been activated,
and the system will switch off. Let the unit cool down
before switching it on again.
• Check that the ventilation opening of the unit is not
obstructed.
• Ensure this unit is well ventilated.
"USB OVER CURRENT ERROR"
• The USB device is using too much power. Disconnect
the USB device, switch off the system and then switch
on again.
"VBR–"
• The system cannot show the remaining play time for
variable bit rate (VBR) tracks.