Panasonic Technics Grand Class SU-G30 Manuel D'utilisation page 42

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Troubleshooting
Before requesting service, make the following checks. If you are uncertain about some of the check
points, or if the solutions indicated in the following guide does not resolve the issue, then consult your
dealer for instructions.
Heat buildup of this unit
This unit becomes warm when the volume is
high. This is not a malfunction.
Do you have the latest firmware
installed?
Panasonic is constantly improving the unit's
firmware to ensure that our customers are
enjoying the latest technology. ( 40)
To return all settings to the factory
defaults
When the following situations occur, reset the
memory:
• There is no response when buttons are pressed.
• You want to clear and reset the memory
contents.
1 Press [SETUP].
2 Press [ ], [ ] repeatedly to select
"Initialization" and then press [OK].
3 Press [ ], [ ] to select "Yes" and then
press [OK].
• All the settings are set back to the factory
defaults. It is necessary to set the memory
items again.
4 Press [ ], [ ] to select "Yes" and then
press [OK] again.
42
(42)
General
The unit does not work.
Operations are not done properly.
• One of the unit's safety devices may have been
activated.
Press [
] on the unit to switch the unit to
standby.
• If the unit does not switch to standby, press
[
] on the unit for at least 5 seconds. The
unit is forcibly switched to standby.
Alternatively, disconnect the AC power
supply cord, wait for at least 3 minutes,
then reconnect it.
Press [
] on the unit to switch on. If the
unit still cannot be operated, consult the
dealer.
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 unit.
• A strong magnetic field near a TV or other
device may adversely affect the audio quality.
Keep this unit away from such devices.
• The speakers may output noise when a device
nearby is emitting powerful radio waves, such
as when a mobile phone is on a call.
No sound.
• Check the volume of this unit.
• Check connections to speakers and other
equipment.
After checking the connections, measure the
output signal of the amplifier. ( 41)
• Check to see if the correct input source is
selected.
• Insert the plugs of the cables to be connected
all the way in.
• Playback of multi-channel content is not
supported.
• The digital audio input terminals of this unit can
only detect linear PCM signals. For details, refer
to the operating instructions of the device.
Playback does not start.
• Depending on your environment or connected
devices, it may take some time.
• Check to see if the format of the file is
supported. About supported format, refer to
"File format". ( 51)

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