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Power does not turn on / Power is turned off
Power does not turn on.
Check whether the power plug is correctly inserted into the power outlet. link
Power automatically turns off.
The sleep timer is set. Turn on the power again. link
“Auto Standby” is set. “Auto Standby” is triggered when there is no operation for a set amount of time. To disable “Auto Standby”, set “Auto Standby” on the menu to “Off”. link
Power turns off and the power indicator flashes in red approx. every 2 seconds.
The protection circuit has been activated due to a rise in temperature within this unit. Turn the power off, wait about an hour until this unit cools down sufficiently, and then turn the power on again. link
Please re-install this unit in a place having good ventilation.
Power turns off and the power indicator flashes in red approx. every 0.5 seconds.
Check the speaker connections. The protection circuit may have been activated because speaker cable core wires came in contact with each other or a core wire was disconnected from the connector and came in contact with the rear panel of this unit. After unplugging the power cord, take corrective action such as firmly re-twisting the core wire or taking care of the connector, and then reconnect the wire. link
Turn down the volume and turn on the power again. link
This unit’s amplifier circuit has failed. Unplug the power cord and contact our customer service center.
The power to this unit does not turn off when you press the Power operation button. “ZONE2 On” or “ZONE3 On” appears on the display.
Power in either ZONE2 or ZONE3 is on. To turn off the power of the device (standby), press either the ZONE2 ON/OFF or ZONE3 ON/OFF button on the main unit or press the POWER 
button after pressing the Z2 or Z3 button on the remote control unit.