The protection circuitry has been activated three times consecutively. When the unit is in this condition, the standby indicator on the unit blinks if you try to turn on the power.

As a safety precaution, capability to turn on the power is disabled. Contact your nearest Yamaha dealer or service center to request repair.

The internal microcomputer has frozen, due to an external electric shock (such as lightning or excessive static electricity) or to a drop in the power supply voltage.

Hold down on the front panel for more than 10 seconds to initialize and reboot the unit. (If the problem persists, disconnect the power cable from the AC wall outlet and plug it again.)

The unit was turned on while a speaker cable was shorted.

Twist the bare wires of each speaker cable firmly and reconnect to the unit and speakers ().

The sleep timer worked.

Turn on the unit and start playback again.

The auto-standby function activated because the unit was not used for the specified time.

To disable the auto-standby function, set “Auto Power Standby” in the “Setup” menu to “Off” ().

The speaker impedance setting is incorrect.

Set the speaker impedance to match your speakers ().

The protection circuitry has been activated because of a short circuit.

Twist the bare wires of each speaker cable firmly and reconnect to the unit and speakers ().

The protection circuitry has been activated because the volume of the unit is too high.

Turn down the volume. If “ECO Mode” in the “Setup” menu is set to “On”, set it to “Off” ().

The internal microcomputer is frozen, due to an external electric shock (such as lightning or excessive static electricity) or to a drop in the power supply voltage.

Hold down MAIN ZONE z on the front panel for more than 10 seconds to initialize and reboot the unit. (If the problem persists, disconnect the power cable from the AC wall outlet and plug it again.)

The unit is out of the operating range.

Use the remote control within the operating range ().

The batteries are weak.

Replace with new batteries.

The unit’s remote control sensor is exposed to direct sunlight or strong lighting.

Adjust the lighting angle, or reposition the unit.

The remote control IDs of the unit and the remote control are not identical.

Change the remote control ID of the unit or the remote control ().

The remote control sensor on the main unit is turned off.

Set “REMOTE SENSOR” in the “ADVANCED SETUP” menu to “ON” ().

The device which is connected to the unit via HDMI does not support the operation of the RED/GREEN/YELLOW/BLUE keys.

Use a device which supports the operation of the RED/GREEN/YELLOW/BLUE keys.

The settings of the RED/GREEN/YELLOW/BLUE keys of the unit's remote control have been changed.

Set "Color Key" in the “Setup” menu to “Default”.

HDMI control setting is “Off”.

Set "HDMI Control" in the “Setup” menu to “On”.