Panasonic SC-HT70 - Manual (Page 48)

Before requesting service, make the below checks. 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.
Common problems
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The unit's display Is off.
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Reference
pages
• Ensure the mains lead is connected. 10
• Turn the volume up. 15, 29
• Turn muting off. 38
• Check speaker connections. 3
• Check speaker connections. 8
• A mains lead or fluorescent light is near the cables. Keep other appliances
and cords away from this unit’s cables.
• If possible in your area, turn the AC mains lead’s plug or connector over to —
reverse the plug’s polarity.
• The speaker cords may have shorted. Turn the unit off and reconnect the
cords.
• Press [FL DISPLAY] on the remote control to turn the display on. 38
• incorrect operation performed. Read the instructions and try again. —
• The speaker cords may have shorted. Turn the unit off and reconnect the
cords. 8
If this does not fix the problem, consult your dealer.
• Check that the subwoofer has not been set to ”0”. 38